CITIBANK SOUTH DAKOTA N A
8-A12G, 1998-09-11
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            -------------------------

                                    FORM 8-A

                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR 12(g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934
                            -------------------------

                          Citibank (South Dakota), N.A.
                                  on behalf of
                       Citibank Credit Card Master Trust I
          (Issuer in respect of the Citibank Credit Card Master Trust I
     $750,000,000 5.750% Class A Credit Card Participation Certificates,
   Series 1998-1 and $48,000,000 5.875% Rate Class B Credit Card Participation
                          Certificates, Series 1998-1)
        -----------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

   United States of America                              46-0358360
 (State or other jurisdiction of                      (I.R.S. Employer
  incorporation or organization)                      Identification No.)

    701 East 60th St., North
    Sioux Falls, South Dakota                               57117
     (Address of principal                                (Zip Code)
       executive offices)

If this form relates to the               If this form relates to the
registration of a class of securities     registration of a class of securities
pursuant to Section 12(b) of the          the pursuant to Section 12(g) of the
Exchange Act and is effective             Exchange Act and is effective pursuant
pursuant to General Instruction           to General Instruction A.(d), please
A.(c), please check the following         check the following box.: |x|
box.: |_|


               Securities Act registration statement file number
                      to which this form relates:   333-99328
                                                 ---------------
                                                 (If applicable)


                     SECURITIES TO BE REGISTERED PURSUANT TO
                            SECTION 12(b) OF THE ACT:

                                      None.

                     SECURITIES TO BE REGISTERED PURSUANT TO
                            SECTION 12(g) OF THE ACT:

            $750,000,000 principal amount of the Citibank Credit Card Master
      Trust I 5.750% Class A Credit Card Participation Certificates, Series
      1998-1 (the "Class A Certificates") with an expected final payment date of
      January 2001 and $48,000,000 principal amount of the Citibank Credit Card
      Master Trust I 5.875% Class B Credit Card Participation Certificates,
      Series 1998-1 (the "Class B Certificates") with an expected final payment
      date of January 2001.


<PAGE>

Item  1. Description of the Registrant's Securities to be Registered

          The description of the Class A Certificates and Class B Certificates
          appears under the captions entitled: "Prospectus Summary"; "Special
          Considerations"; "Series Provisions"; "The Pooling Agreement
          Generally"; "Certain Legal Aspects of the Receivables"; "Tax Matters";
          and "ERISA Considerations" in the Prospectus dated January 9, 1998 and
          "Summary of Series Terms"; "The Accounts"; and "Supplemental Series
          Provisions" in the Prospectus Supplement dated January 9, 1998 (the
          Prospectus and the Prospectus Supplement are incorporated herein by
          reference as Exhibit 7).


Item  2. Exhibits

               1.   Form of specimens of certificates representing the Class A
                    Certificates and the Class B Certificates (included within
                    Exhibit 6).

               2.   Pooling and Servicing Agreement (incorporated by reference
                    from Exhibit 4.2 of the registrants' registration statement
                    on Form S-1 (File No. 33-41054) as filed with the Securities
                    and Exchange Commission on June 5, 1991).

               3.   Form of Amendment No. 1 to Pooling and Servicing Agreement
                    (incorporated by reference from Exhibit 4.3 of the
                    registrants' amendment no. 1 to registration statement on
                    Form S-1 (File No. 33-48148) as filed with the Securities
                    and Exchange Commission on June 12, 1992).

               4.   Form of Amendment Nos. 2, 3 and 4 to Pooling and Servicing
                    Agreement (incorporated by reference from Exhibit 4 of the
                    registrants' registration statement on Form S-3 (File No.
                    33-77802) as filed with the Securities and Exchange
                    Commission on April 15, 1994).

               5.   Form of Amendment No. 5 to Pooling and Servicing Agreement
                    (incorporated by reference from Exhibit 4 of the
                    registrants' Current Report on Form 8-K dated January 8,
                    1996).

               6.   Series 1998-1 Supplement to Pooling and Servicing Agreement.

               7.   Prospectus dated January 9, 1998, as filed with the
                    Securities and Exchange Commission on January 9, 1998 and
                    Prospectus Supplement dated January 9, 1998, as filed with
                    the Securities and Exchange Commission on January 13, 1998
                    pursuant to Rule 424 (b) (the Prospectus and Prospectus
                    Supplement are incorporated herein by reference).


                                       2


<PAGE>

                                    SIGNATURE


                  Pursuant to the requirements of Section 12 of the Securities
Exchange Act of 1934, the registrant has duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly authorized.


                                                  CITIBANK (SOUTH DAKOTA), N.A.


                                                  By: /s/ Eugene D. Rowenhorst
                                                      --------------------------
                                                         Eugene D. Rowenhorst
                                                         Senior Vice President


Date:  September 9, 1998


                                        3

<PAGE>







                                                                       EXHIBIT 6

                                                                  EXECUTION COPY





________________________________________________________________________________








                         CITIBANK (SOUTH DAKOTA), N.A.,
                              Seller and Servicer,

                               CITIBANK (NEVADA),
                              NATIONAL ASSOCIATION,
                                     Seller,

                                       and

                             BANKERS TRUST COMPANY,
             as successor to Yasuda Bank and Trust Company (U.S.A.),
                                     Trustee

                       on behalf of the Certificateholders


                            SERIES 1998-1 SUPPLEMENT

                          Dated as of January 14, 1998

                                       to

                         POOLING AND SERVICING AGREEMENT

                            Dated as of May 29, 1991



                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1






________________________________________________________________________________


<PAGE>

                                TABLE OF CONTENTS

                                                                            Page



                                    ARTICLE I

                   Creation of the Series 1998-1 Certificates

Section 1.01.  Designation.....................................................1


                                   ARTICLE II

                                   Definitions

Section 2.01.  Definitions.....................................................2
Section 2.02.  Amendment to Definition of "Series Adjusted
               Invested Amount"...............................................28


                                   ARTICLE III

                              Servicer and Trustee

Section 3.01.  Servicing Compensation.........................................28
Section 3.02.  Trustee Appointment of Agents..................................31


                                   ARTICLE IV

                    Rights of Series 1998-1 Certificateholders and
                    Allocation and Application of Collections

Section 4.01.  Allocations....................................................31
Section 4.02.  Determination of Monthly Interest..............................33
Section 4.03.  Determination of Monthly Principal.............................35
Section 4.04.  Establishment of Funding Accounts..............................35
Section 4.05.  Required Amount................................................38
Section 4.06.  Application of Reallocated Investor Finance
               Charge Collections and Available Investor
               Principal Collections..........................................39
Section 4.07.  Distributions to Series 1998-1
               Certificateholders.............................................44
Section 4.08.  Investor Charge-Offs...........................................45
Section 4.09.  Excess Finance Charge Collections. ............................47
Section 4.10.  Subordinated Principal Collections.............................50
Section 4.11.  Credit Enhancement.............................................51


<PAGE>

                                                                         - iii -


                                TABLE OF CONTENTS
                                    (cont'd)

                                                                            Page

Section 4.12.  Reallocated Investor Finance Charge
               Collections....................................................59
Section 4.13.  Excess Principal Collections...................................61


                                    ARTICLE V

                          Distributions and Reports to
                               Series 1998-1 Certi

Section 5.01.  Distributions..................................................62
Section 5.02.  Reports and Statements to Series 1998-1
               Certificateholders.............................................63


                                   ARTICLE VI

                               Amortization Events

Section 6.01.  Additional Amortization Events.................................64


                                   ARTICLE VII

                   Optional Repurchase; Additional Issuances;
                               Accumulation Period

Section 7.01.  Optional Repurchase............................................65
Section 7.02.  Additional Issuances of Series 1998-1
               Certificates...................................................66
Section 7.03.  Accumulation Period Postponement...............................69


                                  ARTICLE VIII

                               Final Distributions

Section 8.01.  Sale of Certificateholders' Interest Pursuant
               to Section 2.06 or 10.01 of the Agreement......................70
Section 8.02.  Distribution of Proceeds of Sale, Disposition
               or Liquidation of the Receivables Pursuant to
               Section 9.02 of the Agreement..................................73


<PAGE>

                                                                          - iv -


                                TABLE OF CONTENTS
                                    (cont'd)

                                                                            Page


                                   ARTICLE IX

                                    Covenants

Section 9.01.  Reduction in Portfolio Yield...................................76


                                    ARTICLE X

                            Miscellaneous Provisions

Section 10.01. Ratification of Agreement......................................76
Section 10.02. Counterparts...................................................76
Section 10.03. Governing Law..................................................76
Section 10.04. Construction of Agreement......................................77

                                    EXHIBITS

Exhibit A-1    Form of Class A Certificate
Exhibit A-2    Form of Class B Certificate
Exhibit B-1    Form of Monthly Payment Instructions and
               Notification to the Trustee and the Cash
               Collateral Depositor
Exhibit B-2    Form of Monthly Payment Instructions and
               Notification to the Trustee and the
               Additional Cash Collateral Depositor
Exhibit C      Form of Monthly Statement
Exhibit D      Form of Monthly Servicer's Certificate


                                    SCHEDULE

Schedule 1     Recognized Dealers


<PAGE>

                      SERIES 1998-1 SUPPLEMENT dated as of January 14,
                      1998, among CITIBANK (SOUTH DAKOTA), N.A., a national
                      banking association, Seller and Servicer; CITIBANK
                      (NEVADA), NATIONAL ASSOCIATION, a national banking
                      association, Seller; and BANKERS TRUST COMPANY, a New York
                      banking corporation, as successor to Yasuda Bank and Trust
                      Company (U.S.A.), as Trustee.


               Pursuant to the Pooling and Servicing Agreement dated as of May
29, 1991 (as amended and supplemented, the "Agreement"), among the Sellers, the
Servicer and the Trustee, the Sellers have created Citibank Credit Card Master
Trust I (the "Trust"). Section 6.03 of the Agreement provides that the Sellers
may from time to time direct the Trustee to issue, on behalf of the Trust, one
or more new Series of Investor Certificates representing fractional undivided
interests in the Trust. The Principal Terms of any new Series are to be set
forth in a Supplement to the Agreement.

               Pursuant to this Series Supplement, the Sellers and the Trustee
shall create a new Series of Investor Certificates and specify the Principal
Terms thereof.


                                    ARTICLE I

                   Creation of the Series 1998-1 Certificates

               Section 1.01. Designation. (a) There is hereby created a Series
of Investor Certificates to be issued pursuant to the Agreement and this Series
Supplement to be known as "Citibank Credit Card Master Trust I, Series 1998- 1".
The Series 1998-1 Certificates shall be issued in two Classes, the first of
which shall be known as the "5.750% Class A Credit Card Participation
Certificates, Series 1998- 1", and the second of which shall be known as the
"5.875% Class B Credit Card Participation Certificates, Series 1998- 1".

               (b) Series 1998-1 shall be included in Group One. Notwithstanding
any provision in the Agreement or in this Series Supplement, the first
Distribution Date with respect to Series 1998-1 shall be the February 1998
Distribution Date.


<PAGE>

                                                                               2

               (c) In the event that any term or provision contained herein
shall conflict with or be inconsistent with any term or provision contained in
the Agreement, the terms and provisions of this Series Supplement shall govern.


                                   ARTICLE II

                                   Definitions

               Section 2.01. Definitions. (a) Whenever used in this Series
Supplement, the following words and phrases shall have the following meanings,
and the definitions of such terms are applicable to the singular as well as the
plural forms of such terms and to the masculine as well as to the feminine and
neuter genders of such terms.

               "Accumulation Period" shall mean, unless an Amortization Event
shall have occurred prior thereto, the period commencing at the close of
business on the fourth-to- last Business Day of December 1999, or such later
date as is determined in accordance with Section 7.03, and ending upon the first
to occur of (a) the commencement of the Early Amortization Period and (b) the
payment in full to Class A Certificateholders and Class B Certificateholders of
the Class A Invested Amount and the Class B Invested Amount, respectively.

               "Accumulation Period Amount" shall mean for each Monthly Period
an amount equal to the product of (i) Available Expected Principal for such
Monthly Period and (ii) a fraction, the numerator of which is the Initial
Invested Amount and the denominator of which is the sum of (a) the Initial
Invested Amount and (b) the initial invested amounts of all Variable
Accumulation Series which are not in their revolving periods as of such Monthly
Period; provided that, for purposes of this definition, the commencement date of
the accumulation period of each Variable Accumulation Series shall be deemed to
have been postponed to the latest permissible date, determined as if the
provisions of Section 7.03 applied to each such Series (applying such provisions
first to the Variable Accumulation Series with the latest expected final payment
date and next to each Series with the next preceding expected final payment
date); provided further, that a Variable Accumulation Series shall be deemed to
be in its revolving period in each Monthly Period in


<PAGE>

                                                                               3

which the sum of the expected controlled accumulation or amortization amounts
for all subsequent monthly periods for such Series is equal to the initial
invested amount of such Series.

               "Additional Cash Collateral Account" shall have the meaning
specified in Section 4.11(a.1).

               "Additional Cash Collateral Depositor" shall mean the financial
institution or institutions which is or are a party to any Additional Loan
Agreement, such financial institution or institutions to be selected by the
Sellers on or prior to an Additional Issuance Date, or any successors or assigns
thereto appointed as provided in such Additional Loan Agreement.

               "Additional Class A Certificates" shall have the meaning
specified in Section 7.02(a).

               "Additional Class B Certificates" shall have the meaning
specified in Section 7.02(a).

               "Additional Interest" shall mean, at any time of determination,
the sum of Class A Additional Interest and Class B Additional Interest.

               "Additional Investor Certificates" shall mean any one of the
Additional Class A Certificates or the Additional Class B Certificates.

               "Additional Issuance" shall have the meaning
specified in Section 7.02(a).

               "Additional Issuance Date" shall have the meaning
specified in Section 7.02(a).

               "Additional Loan Agreement" shall mean the agreement among the
Banks, the Trustee and any Additional Cash Collateral Depositor, dated as of the
related Additional Issuance Date.

               "Adjusted Invested Amount" shall mean the Series
Adjusted Invested Amount with respect to Series 1998-1.

               "Allocable Defaulted Amount" shall mean, with
respect to any Due Period, an amount equal to the product of


<PAGE>

                                                                               4

(a) the Series 1998-1 Allocation Percentage with respect to such Due Period, (b)
the Floating Allocation Percentage with respect to such Due Period and (c) the
Defaulted Amount with respect to such Due Period.

               "Allocable Finance Charge Collections" shall mean, with respect
to any Deposit Date or Distribution Date, the product of (a) the Series 1998-1
Allocation Percentage for the related Due Period and (b) the aggregate amount of
Collections in respect of Finance Charge Receivables relating to any Deposit
Date or Distribution Date, as applicable.

               "Allocable Miscellaneous Payments" shall mean, with respect to
any Distribution Date, the product of (a) the Series 1998-1 Allocation
Percentage for the related Due Period and (b) Miscellaneous Payments with
respect to the related Due Period.

               "Allocable Principal Collections" shall mean, with respect to any
Deposit Date or Distribution Date, the product of (a) the Series 1998-1
Allocation Percentage for the related Due Period and (b) the aggregate amount of
Collections in respect of Principal Receivables relating to any Deposit Date or
Distribution Date, as applicable.

               "Available Additional Cash Collateral Amount" shall mean, with
respect to each Additional Cash Collateral Account and on any date of
determination, the lesser of (a) the amount on deposit in such Additional Cash
Collateral Account and (b) the Initial Additional Cash Collateral Amount for
such Additional Cash Collateral Account.

               "Available Cash Collateral Amount" shall mean, with respect to
any date of determination, the lesser of (a) the amount on deposit in the Cash
Collateral Account and (b) the Initial Cash Collateral Amount.

               "Available Enhancement Amount" shall mean, with respect to any
date of determination, the sum of the Available Cash Collateral Amount and the
Available Additional Cash Collateral Amount with respect to such date.

               "Available Expected Principal" for any date of determination with
respect to each Monthly Period shall be


<PAGE>


                                                                               5

equal to the excess of (a) the Expected Monthly Principal for such Monthly
Period over (b) the sum of, without duplication, (i) all scheduled amortizations
or accumulations of principal, including past due shortfalls as of such date of
determination, for all Fixed Accumulation Series which are not in their
revolving periods as of such Monthly Period and (ii) all principal collections
projected by the Servicer to be allocable to any other Series with respect to
which an Amortization Event shall have occurred on or prior to such date of
determination.

               "Available Investor Principal Collections" shall mean, with
respect to any Distribution Date, the sum of (a) an amount equal to (i) Investor
Principal Collections for such Distribution Date, minus (ii) the amount of
Subordinated Principal Collections with respect to such Distribution Date which
pursuant to Section 4.10(a) is required to fund any deficiency pursuant to
Section 4.06(a)(i) and (a)(iii) or (c)(i) and (c)(iii), as the case may be, for
such Distribution Date, plus (b) Allocable Miscellaneous Payments on deposit in
the Collection Account for such Distribution Date, plus (c) Series 1998-1 Excess
Principal Collections on deposit in the Collection Account for such Distribution
Date plus (d) Subordinated Series Reallocated Principal Collections on deposit
in the Collection Account for such Distribution Date.

               "Available Shared Enhancement Amount" shall mean, with respect to
any date of determination, the lesser of (a) the Initial Shared Enhancement
Amount and (b) the excess, if any, of the Available Enhancement Amount on such
date over the Initial Class B Enhancement Amount.

            "Bank Collateral Account" shall have the meaning specified in
Section 4.11(a).

            "Cash Collateral Account" shall have the meaning specified in
Section 4.11(a).

               "Cash Collateral Account Investments" shall mean
Eligible Investments.

               "Cash Collateral Depositor" shall mean the financial institution
or institutions which are a party to the Loan Agreement, such financial
institution or institutions to be selected by the Sellers on or prior to


<PAGE>

                                                                               6

the Closing Date to make a deposit in the Cash Collateral Account on the Closing
Date, or any successors or assigns thereto appointed as provided in the Loan
Agreement.

               "CCA Charge-Offs" shall have the meaning specified
in Section 4.08(d).

               "CCA Default Amount" shall mean, with respect to any Distribution
Date (commencing with the Distribution Date following the Distribution Date on
which the Class A Invested Amount and the Class B Invested Amount are paid in
full and provided that the Economic Special Payment Date has occurred), the
Allocable Defaulted Amount for the related Due Period.

               "CCA Initial Invested Amount" shall mean the aggregate amount
withdrawn from the Cash Collateral Account and each Additional Cash Collateral
Account and applied to the payment of principal of the Series 1998-1
Certificates with respect to the Economic Special Payment Date, if any, pursuant
to Section 4.11(i)(D) and (E).

               "CCA Invested Amount" shall mean, when used with respect to any
date, an amount equal to (a) the CCA Initial Invested Amount, minus (b) the
aggregate amount of principal payments made to the Cash Collateral Depositor and
each Additional Cash Collateral Depositor pursuant to Section 4.06(f)(iv) prior
to such date, minus (c) the aggregate amount of CCA Charge-Offs for all prior
Distribution Dates pursuant to Section 4.08(d), minus (d) the aggregate amount
of Subordinated Principal Collections allocated on all prior Distribution Dates
pursuant to Section 4.10(a) that have resulted in a reduction in the CCA
Invested Amount pursuant to Section 4.08(c), minus (e) an amount equal to the
amount by which the CCA Invested Amount has been reduced on all prior
Distribution Dates pursuant to Section 4.08(a) and (b), and plus (f) the sum of
(i) the aggregate amount of any Allocable Miscellaneous Payments allocated and
available on all prior Distribution Dates pursuant to Section 4.08(d) and (ii)
the amount of Excess Finance Charge Collections allocated and available on all
prior Distribution Dates pursuant to Section 4.09(i), for the purpose of
reimbursing amounts deducted pursuant to the foregoing clauses (c), (d) and (e);
provided, however, that (i) unless and until a withdrawal is made from the Cash
Collateral Account and each Additional Cash Collateral Account, and the proceeds
thereof


<PAGE>

                                                                               7

are applied to the payment of principal of the Series 1998-1 Certificates, with
respect to the Economic Special Payment Date pursuant to Section 4.11(i)(D) and
(E), the CCA Invested Amount shall be zero and (ii) the CCA Invested Amount may
not be reduced below zero.

               "CCA Monthly Interest" shall mean, with respect to any
Distribution Date following the Economic Special Payment Date, an amount equal
to one-twelfth of the product of (a) the CCA Invested Amount as of the close of
business on the preceding Distribution Date (after giving effect to any
distribution to the Cash Collateral Depositor and each Additional Cash
Collateral Depositor on such preceding Distribution Date pursuant to Section
4.06(f)(iv)) and (b) a fraction, the numerator of which is equal to the sum of
(i) the product of (x) the Class A Certificate Rate and (y) the outstanding
principal balance of the Class A Certificates as of the close of business on
such preceding Distribution Date (after giving effect to any distribution of
Class A Monthly Principal on such preceding Distribution Date) and (ii) the
product of (x) the Class B Certificate Rate and (y) the outstanding principal
balance of the Class B Certificates as of the close of business on such
preceding Distribution Date (after giving effect to any distribution of Class B
Monthly Principal on such preceding Distribution Date) and the denominator of
which is the sum of the outstanding principal balances referred to in clauses
(i)(y) and (ii)(y) above; provided, however, that with respect to each
Distribution Date following the Distribution Date on which the outstanding
principal balance of the Class A Certificates has been reduced to zero, "CCA
Monthly Interest" shall mean, with respect to any Distribution Date, an amount
equal to one-twelfth of the product of (A) the CCA Invested Amount as of the
close of business on the preceding Distribution Date (after giving effect to any
distribution to the Cash Collateral Depositor and each Additional Cash
Collateral Depositor on such preceding Distribution Date pursuant to Section
4.06(f)(iv)) and (B) the Class B Certificate Rate.

               "CCA Monthly Principal" shall mean, for any Distribution Date
with respect to the Early Amortization Period, beginning with the Distribution
Date on which the Class A Invested Amount and the Class B Invested Amount are
paid in full and provided that the Economic Special Payment Date has occurred,
the Available Investor Principal Collections for such Distribution Date (minus
the portion of


<PAGE>

                                                                               8

such Available Investor Principal Collections applied to Class A Monthly
Principal or Class B Monthly Principal on such Distribution Date); provided,
however, that the CCA Monthly Principal shall not exceed the CCA Invested
Amount.

               "CCA Monthly Servicing Fee" shall have the meaning specified in
Section 3.01.

               "Class A Additional Interest" shall have the meaning specified in
Section 4.02(a).

               "Class A Allocable Share" shall mean, for each Distribution Date
with respect to a Monthly Period, the sum of (a) the product of (i) Reallocated
Investor Finance Charge Collections deposited in the Collection Account for such
Distribution Date and (ii) the Class A Invested Percentage for such Distribution
Date and (b) the Class A Funding Account Shortfall for such Distribution Date,
if any, and the amount of any Class A Funding Account Shortfall previously due
but not deposited into the Class A Interest Funding Account on a prior
Distribution Date.

               "Class A Certificate Rate" shall mean 5.750% per annum,
calculated on the basis of a 360-day year of twelve 30-day months.

               "Class A Certificateholder" shall mean the Person in whose name a
Class A Certificate is registered in the Certificate Register.

               "Class A Certificateholders' Interest" shall mean that portion of
the Certificateholders' Interest evidenced by the Class A Certificates.

               "Class A Certificates" shall mean any one of the certificates
executed by the Banks and authenticated by or on behalf of the Trustee,
substantially in the form of Exhibit A-1. For the avoidance of doubt, when used
in this Series Supplement the term "Class A Certificates" shall include any
Additional Class A Certificates.

               "Class A Covered Amount" shall mean, with respect to any Monthly
Period, one-twelfth of the product of (a) the Class A Certificate Rate and (b)
the Class A Principal Funding Account Balance, if any, for such Monthly Period.


<PAGE>

                                                                               9

               "Class A Excess Investment Proceeds" shall mean, with respect to
any Monthly Period, an amount equal to the excess, if any, of (a) the Class A
Investment Proceeds for such Monthly Period over (b) the Class A Covered Amount
for such Monthly Period.

               "Class A Expected Final Payment Date" shall mean the January 2001
Distribution Date.

               "Class A Funding Account Shortfall" shall mean, with respect to
any Monthly Period, an amount equal to the excess, if any, of (a) the Class A
Covered Amount for such Monthly Period over (b) the Class A Investment Proceeds
for such Monthly Period.

               "Class A Initial Invested Amount" shall mean the sum of the
aggregate initial principal amount of the Class A Certificates, which is
$750,000,000 on the Closing Date, and the aggregate initial principal amount of
any Additional Class A Certificates.

               "Class A Interest Funding Account" shall have the meaning
specified in Section 4.04(a).

               "Class A Interest Shortfall" shall have the meaning specified in
Section 4.02(a).

               "Class A Invested Amount" shall mean, when used with respect to
any date, an amount equal to (a) the Class A Initial Invested Amount, minus (b)
the aggregate amount of principal payments made to Class A Certificateholders
prior to such date, minus (c) the Class A Principal Funding Account Balance as
of such date and minus (d) the excess, if any, of the aggregate amount of Class
A Investor Charge-Offs over Class A Investor Charge-Offs reimbursed pursuant to
Section 4.08(a) prior to such date; provided, however, that the Class A Invested
Amount may not be reduced below zero.

               "Class A Invested Percentage" shall mean, with respect to any
Distribution Date, the percentage equivalent of a fraction, the numerator of
which is the Class A Invested Amount as of the last day of the second preceding
Due Period and the denominator of which is the Invested Amount as of such last
day.


<PAGE>

                                                                              10

               "Class A Investment Fee" shall mean, for each Distribution Date
beginning with the February 2000 Distribution Date and ending with the
Distribution Date immediately preceding the Class A Expected Final Payment Date,
a fee in an amount equal to $23,511, $21,469, $19,420, $17,338, $15,243,
$13,131, $10,992, $8,837, $6,660, $4,461, and $2,241 , respectively; provided,
however, after any Additional Issuance Date, the Class A Investment Fee shall be
the amounts specified on such Additional Issuance Date.

               "Class A Investment Proceeds" shall mean, with respect to any
Monthly Period, the aggregate amount of all interest and other investment income
(net of investment expenses) earned (and actually received by the Trustee on the
Distribution Date following such Monthly Period) on the Class A Principal
Funding Account Balance for such Monthly Period.

               "Class A Investor Charge-Offs" shall have the meaning specified
in Section 4.08(a).

               "Class A Investor Default Amount" shall mean, with respect to any
Distribution Date, an amount equal to the product of (a) the Allocable Defaulted
Amount for the related Due Period and (b) the Class A Invested Percentage for
such Distribution Date.

               "Class A Monthly Interest" shall have the meaning specified in
Section 4.02(a).

               "Class A Monthly Principal" shall have the meaning specified in
Section 4.03(a).

               "Class A Monthly Servicing Fee" shall have the meaning specified
in Section 3.01.

               "Class A Principal Draw Amount" shall have the meaning specified
in Section 4.11(h).

               "Class A Principal Funding Account" shall have the meaning
specified in Section 4.04(b).

               "Class A Principal Funding Account Balance" shall mean, with
respect to any Monthly Period, the principal amount, if any, on deposit in the
Class A Principal Funding Account on the last day of such Monthly Period.


<PAGE>

                                                                              11

               "Class B Additional Interest" shall have the meaning specified in
Section 4.02(b).

               "Class B Allocable Share" shall mean, for each Distribution Date
with respect to a Monthly Period, the product of (i) Reallocated Investor
Finance Charge Collections deposited in the Collection Account for such
Distribution Date and (ii) the Class B Invested Percentage for such Distribution
Date.

               "Class B Certificate Rate" shall mean 5.875% per annum,
calculated on the basis of a 360-day year of twelve 30-day months.

               "Class B Certificateholder" shall mean the Person in whose name a
Class B Certificate is registered in the Certificate Register.

               "Class B Certificateholders' Interest" shall mean that portion of
the Certificateholders' Interest evidenced by the Class B Certificates.

               "Class B Certificates" shall mean any one of the certificates
executed by the Banks and authenticated by or on behalf of the Trustee,
substantially in the form of Exhibit A-2. For the avoidance of doubt, the term
"Class B Certificates" when used in this Series Supplement shall include any
Additional Class B Certificates.

               "Class B Expected Final Payment Date" shall mean
the January 2001 Distribution Date.

               "Class B Initial Invested Amount" shall mean the sum of the
aggregate initial principal amount of the Class B Certificates, which is
$48,000,000 on the Closing Date, and the aggregate initial principal amount of
any Additional Class B Certificates.

               "Class B Interest Funding Account" shall have the meaning
specified in Section 4.04(a).

               "Class B Interest Shortfall" shall have the meaning specified in
Section 4.02(b).

               "Class B Invested Amount" shall mean, when used with respect to
any date, an amount equal to (a) the Class B


<PAGE>

                                                                              12

Initial Invested Amount, minus (b) the aggregate amount of principal payments
made to Class B Certificateholders prior to such date (other than any principal
payments made to Class B Certificateholders from the proceeds of a Reimbursement
Draw Amount pursuant to Section 4.11(f)), minus (c) the aggregate amount of
Class B Investor Charge- Offs for all prior Distribution Dates pursuant to
Section 4.08(b), minus (d) the aggregate amount of Subordinated Principal
Collections allocated on all prior Distribution Dates pursuant to Section
4.10(a) (excluding any Subordinated Principal Collections that have resulted in
a reduction in the CCA Invested Amount pursuant to Section 4.08(c)), minus (e)
an amount equal to the amount by which the Class B Invested Amount has been
reduced on all prior Distribution Dates pursuant to Section 4.08(a), and plus
(f) the sum of (i) the aggregate amount of any Allocable Miscellaneous Payments
allocated and available on all prior Distribution Dates pursuant to Section
4.08(b)(i) and (ii) the amount of Excess Finance Charge Collections allocated
and available on all prior Distribution Dates pursuant to Section 4.09(f), for
the purpose of reimbursing amounts deducted pursuant to the foregoing clauses
(c), (d) and (e); provided, however, that the Class B Invested Amount may not be
reduced below zero.

               "Class B Invested Percentage" shall mean, with respect to any
Distribution Date, the percentage equivalent of a fraction, the numerator of
which is the Class B Invested Amount as of the last day of the second preceding
Due Period and the denominator of which is the Invested Amount as of such last
day.

               "Class B Investor Charge-Offs" shall have the meaning specified
in Section 4.08(b).

               "Class B Investor Default Amount" shall mean, with respect to any
Distribution Date, an amount equal to the product of (a) the Allocable Defaulted
Amount for the related Due Period and (b) the Class B Invested Percentage for
such Distribution Date.

               "Class B Monthly Interest" shall have the meaning specified in
Section 4.02(b).

               "Class B Monthly Principal" shall have the meaning specified in
Section 4.03(b).


<PAGE>

                                                                              13

               "Class B Monthly Servicing Fee" shall have the meaning specified
in Section 3.01.

               "Class B Principal Commencement Date" shall mean
the Distribution Date on which the Class A Invested Amount
is to be paid in full.

               "Class B Principal Draw Amount" shall have the meaning specified
in Section 4.11(h).

               "Closing Date" shall mean January 14, 1998.

               "Controlled Amortization Amount" shall mean $68,181,818; provided
that after any Additional Issuance Date, or if the commencement of the
Accumulation Period is postponed pursuant to Section 7.03, the Controlled
Amortization Amount shall mean the amount to be specified on such Additional
Issuance Date or on the date on which the Accumulation Period is postponed, as
applicable; provided further, that if the commencement of the Accumulation
Period is postponed pursuant to Section 7.03, the Controlled Amortization Amount
for each Monthly Period shall be no greater than the Accumulation Period Amount
for such Monthly Period and no less than the lesser of (a) the Accumulation
Period Amount for such Monthly Period and (b) one-eleventh of the Class A
Initial Invested Amount; provided, however, that the sum of the Controlled
Amortization Amounts for all Monthly Periods during the postponed Accumulation
Period shall not be less than the Class A Initial Invested Amount.

               "Controlled Distribution Amount" shall mean, for any Distribution
Date with respect to a Monthly Period, an amount equal to the sum of the
Controlled Amortization Amount and any existing Deficit Controlled Amortization
Amount.

               "Cumulative Excess Interest Amount" shall mean, with respect to
any Distribution Date, an amount equal to the sum of (a) the Excess Interest
Amount with respect to such Distribution Date and (b) the aggregate Excess
Interest Amounts with respect to prior Distribution Dates which have not been
deposited in the Class B Interest Funding Account pursuant to Section 4.09(c) or
4.11(d); provided, however, that with respect to the first Distribution Date,
the Cumulative Excess Interest Amount shall be zero.


<PAGE>

                                                                              14

               "Cut-Off Date" shall mean December 26, 1997.

               "Default Draw Amount" shall have the meaning specified in
Section 4.11(e).

               "Deficit Controlled Amortization Amount" shall mean (a) on the
first Distribution Date with respect to the Accumulation Period, the excess, if
any, of the Controlled Amortization Amount over the amount distributed from the
Collection Account as Class A Monthly Principal for such Distribution Date and
(b) on each subsequent Distribution Date with respect to the Accumulation
Period, the excess, if any, of the Controlled Amortization Amount plus any then
existing Deficit Controlled Amortization Amount over the amount distributed from
the Collection Account as Class A Monthly Principal for such Distribution Date.

               "Determination Date" shall mean the earlier of the fifth Business
Day and the eighth calendar day preceding the seventh day of each calendar month
(or, if such seventh day is not a Business Day, the next succeeding Business
Day).

               "Distribution Date" shall mean the fifteenth day of each calendar
month, or if such fifteenth day is not a Business Day, the next succeeding
Business Day, commencing February 17, 1998.

               "Early Amortization Period" shall mean the period beginning at
the close of business on the Business Day immediately preceding the day on which
an Amortization Event with respect to Series 1998-1 is deemed to have occurred,
and ending upon the earlier to occur of (i) the payment in full to the Class A
Certificateholders and the Class B Certificateholders of the Class A Invested
Amount and the Class B Invested Amount, respectively, and the payment in full to
the Cash Collateral Depositor and each Additional Cash Collateral Depositor of
the CCA Invested Amount, if any, and (ii) the Termination Date.

               "Economic Amortization Event" shall mean an Amortization Event
set forth in Section 6.01(c) or (e).

               "Economic Special Payment Date" shall mean the Special Payment
Date falling in the Due Period following the Due Period in which an Economic
Amortization Event is deemed to have occurred.


<PAGE>

                                                                              15

               "Excess Finance Charge Collections" shall mean, with respect to
any Distribution Date, the sum of the amounts, if any, specified pursuant to
Section 4.06(a)(v) or (c)(v) and (b)(iii) or (d)(iii), as the case may be, with
respect to such Distribution Date.

               "Excess Interest Amount" shall mean, with respect to any
Distribution Date, an amount equal to one-twelfth of the product of (a) (i) the
outstanding principal balance of the Class B Certificates as of the preceding
Distribution Date (after subtracting therefrom the aggregate amount of
distributions of Class B Monthly Principal made to the Class B
Certificateholders on or before such preceding Distribution Date) minus (ii) the
Class B Invested Amount as of such preceding Distribution Date (after giving
effect to any increase or decrease in the Class B Invested Amount on such
preceding Distribution Date) and (b) the Class B Certificate Rate; provided,
however, that with respect to the first Distribution Date, the Excess Interest
Amount shall be zero.

               "Excluded Series" shall mean Series 1992-1, Series 1993-1, Series
1995-7 and any other Series designated in the related Supplement as an Excluded
Series.

               "Expected Monthly Principal" shall be equal to the product of (i)
the lowest of the monthly principal payment rates expressed as a decimal for the
12 months preceding the date of such calculation and (ii) the initial invested
amounts of all outstanding Series, other than Excluded Series (except if an
Amortization Event has occurred with respect to such Excluded Series).

               "Fixed Accumulation Series" shall mean each outstanding Series,
other than Excluded Series, for which, pursuant to the terms of the related
Supplement, the commencement date of the Accumulation Period may not be changed
at the option of the Servicer.

               "Floating Allocation Percentage" shall mean, with respect to any
Due Period, the percentage equivalent (which percentage shall never exceed 100%)
of a fraction, the numerator of which is the sum of the Invested Amount and the
CCA Invested Amount, if any, as of the first day of such Due Period and the
denominator of which is the product of (a) the total amount of Principal
Receivables in the Trust as of


<PAGE>

                                                                              16

the last day of the immediately preceding Due Period and (b) the Series 1998-1
Allocation Percentage with respect to the Due Period in respect of which the
Floating Allocation Percentage is being determined; provided, however, that,
with respect to the first Due Period, the Floating Allocation Percentage shall
mean the percentage equivalent of a fraction, the numerator of which is the
Initial Invested Amount and the denominator of which is the product of (x) the
total amount of Principal Receivables in the Trust on the Cut-Off Date and (y)
the Series 1998-1 Allocation Percentage with respect to the Cut-Off Date;
provided further that, with respect to any Due Period in which a Lump Addition
occurs or a removal of Accounts pursuant to Section 2.10 of the Agreement
occurs, the amount referred to in clause (a) shall be the weighted average of
the amount of Principal Receivables in the Trust on the date on which such Lump
Addition or removal of Accounts occurs (after giving effect thereto) and the
last day of the immediately preceding Due Period.

               "Gross Amount" shall mean, for each Distribution Date with
respect to a Monthly Period, the sum of (a) the Gross Amount Allocation
Percentage of Allocable Finance Charge Collections for the Due Period
immediately preceding such Distribution Date, (b) Reallocated Investor Finance
Charge Collections for such Distribution Date and (c) the Class A Excess
Investment Proceeds for such Distribution Date, if any.

               "Gross Amount Allocation Percentage" shall mean 100% minus the
Floating Allocation Percentage.

               "Group One" shall mean Series 1998-1 and each other Series
specified in the related Supplement to be included in Group One.

               "Group One Investor Additional Amounts" shall mean, with respect
to any Distribution Date, the sum of (a) Series 1998-1 Additional Amounts for
such Distribution Date and (b) for all other Series included in Group One, the
sum of (i) the aggregate net amount by which the invested amounts of the
Investor Certificates of such Series have been reduced as a result of investor
charge-offs, subordination of principal collections and funding the investor
default amounts in respect of any Class of such Series as of such Distribution
Date and (ii) if the


<PAGE>

                                                                              17

applicable Supplements so provide, the aggregate unpaid amount of interest at
the applicable certificate rates that has accrued on the amounts described in
the preceding clause (i) for such Distribution Date.

               "Group One Investor Default Amount" shall mean, with respect to
any Distribution Date, the sum of (a) the Series 1998-1 Default Amount for such
Distribution Date and (b) the aggregate amount of the investor default amounts
for all other Series included in Group One for such Distribution
Date.

               "Group One Investor Finance Charge Collections" shall mean, with
respect to any Distribution Date, the sum of (a) Investor Finance Charge
Collections for such Distribution Date and (b) the aggregate amount of the
investor finance charge collections for all other Series included in Group One
for such Distribution Date.

               "Group One Investor Monthly Fees" shall mean, with respect to any
Distribution Date, the sum of (a) Series 1998-1 Monthly Fees for such
Distribution Date and (b) the aggregate amount of the servicing fees, investor
fees, fees payable to any Series Enhancer and any other similar fees, which are
payable out of reallocated investor finance charge collections pursuant to the
related Supplements, for all other Series included in Group One for such
Distribution Date.

               "Group One Investor Monthly Interest" shall mean, with respect to
any Distribution Date, the sum of (a) Series 1998-1 Monthly Interest for such
Distribution Date and (b) the aggregate amount of monthly interest, including
overdue monthly interest and interest on such overdue monthly interest, if
applicable, for all other Series included in Group One for such Distribution
Date.

               "Initial Additional Cash Collateral Amount" shall mean the
aggregate amount of additional credit enhancement provided by each Additional
Cash Collateral Depositor for the benefit of the Series 1998-1 Certificates on
the related Additional Issuance Date.

               "Initial Cash Collateral Amount" shall mean the sum of (x)
$55,860,000 and (y) the aggregate amount of any additional credit enhancement
provided by the Cash


<PAGE>


                                                                              18

Collateral Depositor for the benefit of the Series 1998-1 Certificates on each
Additional Issuance Date.

               "Initial Class B Additional Collateral Amount" shall mean the
aggregate amount of any additional credit enhancement provided by each
Additional Cash Collateral Depositor solely for the Class B Certificates on the
related Additional Issuance Date.

               "Initial Class B Collateral Amount" shall mean the sum of (x)
$15,960,000 and (y) the aggregate amount of any additional credit enhancement
provided by the Cash Collateral Depositor solely for the Class B Certificates on
each Additional Issuance Date.

               "Initial Class B Enhancement Amount" shall mean the sum of the
Initial Class B Collateral Amount and the Initial Class B Additional Collateral
Amount.

               "Initial Invested Amount" shall mean the sum of the Class A
Initial Invested Amount and the Class B Initial Invested Amount.

               "Initial Shared Additional Collateral Amount" shall mean the
aggregate amount of any additional credit enhancement provided by each
Additional Cash Collateral Depositor to be shared by the Class A Certificates
and the Class B Certificates on the related Additional Issuance Date.

               "Initial Shared Collateral Amount" shall mean the sum of (x)
$39,900,000 and (y) the aggregate amount of any additional credit enhancement
provided by the Cash Collateral Depositor to be shared by the Class A
Certificates and the Class B Certificates on each Additional Issuance Date.

               "Initial Shared Enhancement Amount" shall mean the sum of the
Initial Shared Collateral Amount and the Initial Shared Additional Collateral
Amount.

               "Interest Draw Amount" shall have the meaning specified in
Section 4.11(d).


<PAGE>

                                                                              19

               "Interest Funding Accounts" shall mean the Class A Interest
Funding Account and the Class B Interest Funding Account.

               "Interest Payment Date" shall mean the fifteenth day of each
January and July (or, if such day is not a Business Day, the next succeeding
Business Day), commencing on the July 1998 Distribution Date.

               "Interest Period" shall mean, with respect to any Payment Date,
the period from and including the Payment Date immediately preceding such
Payment Date (or, in the case of the first Payment Date, from and including the
Closing Date) to but excluding such Payment Date.

               "Invested Amount" shall mean, when used with respect to any date,
an amount equal to the sum of (a) the Class A Invested Amount as of such date
and (b) the Class B Invested Amount as of such date; provided, however, for
purposes of Section 4.12(c) and Section 7.01, "Invested Amount" shall mean, when
used with respect to any date, an amount equal to the sum of (i) the Class A
Invested Amount as of such date, (ii) the Class B Invested Amount as of such
date and (iii) the CCA Invested Amount, if any, as of such date.

               "Investor Charge-Offs" shall mean, with respect to any Due
Period, the Class A Investor Charge-Offs for such Due Period and the Class B
Investor Charge-Offs for such Due Period.

               "Investor Finance Charge Collections" shall mean, with respect to
any Distribution Date, an amount equal to (a) the product of (i) the Floating
Allocation Percentage for the related Due Period and (ii) Allocable Finance
Charge Collections deposited in the Collection Account for the related Due
Period, minus (b) the aggregate amount of Servicer Interchange for the related
Due Period.

               "Investor Principal Collections" shall mean, with respect to any
Distribution Date, the sum of (a) the Floating Allocation Percentage, with
respect to the Revolving Period, or the Principal Allocation Percentage, with
respect to the Accumulation Period or the Early Amortization Period, of
Allocable Principal Collections deposited in the Collection Account for the
related Due


<PAGE>

                                                                              20

Period (or any partial Due Period which occurs as the first Due Period during
the Early Amortization Period), (b) the amount, if any, of Collections of
Finance Charge Receivables and Excess Finance Charge Collections to be
distributed pursuant to Section 4.06(a)(ii) or (c)(ii), as the case may be, on
such Distribution Date and (c) the amount, if any, of Excess Finance Charge
Collections to be distributed pursuant to Sections 4.09(b), (d), (f), (h) or (i)
on such Distribution Date.

               "Loan Agreement" shall mean the agreement among the Banks, the
Trustee and the Cash Collateral Depositor, dated as of the date hereof, and as
may be amended from time to time.

               "Monthly Period" shall mean each period beginning on and
including a Distribution Date and ending on and including the day preceding the
following Distribution Date; provided that the first Monthly Period shall begin
on the first Distribution Date with respect to the Accumulation Period and the
last Monthly Period shall end on the day preceding the last Distribution Date
with respect to the Accumulation Period.

               "Net Servicing Fee Rate" shall mean (i) so long as Citibank
(South Dakota) or an Affiliate of Citibank (South Dakota) is the Servicer, 0.37%
per annum and (ii) if Citibank (South Dakota) or an Affiliate of Citibank (South
Dakota) is no longer the Servicer, 0.77% per annum.

               "Payment Date" shall mean any Interest Payment Date and any
Special Payment Date.

               "Principal Allocation Percentage" shall mean, with respect to any
Due Period, the percentage equivalent (which percentage shall never exceed 100%)
of a fraction, the numerator of which is the Adjusted Invested Amount as of the
last day of the Revolving Period and the denominator of which is the product of
(a) the total amount of Principal Receivables in the Trust as of the last day of
the immediately preceding Due Period and (b) the Series 1998-1 Allocation
Percentage with respect to the Due Period in respect of which the Principal
Allocation Percentage is being determined; provided, however, that, with respect
to any Due Period in which a Lump Addition occurs or a removal of Accounts
pursuant to Section 2.10 of the Agreement


<PAGE>

                                                                              21

occurs, the amount referred to in clause (a) shall be the weighted average of
the amount of Principal Receivables in the Trust on the date on which such Lump
Addition or removal of Accounts occurs (after giving effect thereto) and the
last day of the immediately preceding Due Period.

               "Reallocated Investor Finance Charge Collections" shall mean that
portion of Group One Investor Finance Charge Collections allocated to Series
1998-1 pursuant to Section 4.12.

               "Reassignment Amount" shall mean, with respect to any
Distribution Date, after giving effect to any deposits and distributions
otherwise to be made on such Distribution Date, the sum of (i) the Invested
Amount on such Distribution Date, plus (ii) the CCA Invested Amount, if any, on
such Distribution Date, plus (iii) accrued and unpaid interest on the unpaid
balance of the Series 1998-1 Certificates (calculated on the basis of the
outstanding principal balance of the Class A Certificates and the Class B
Certificates at the Class A Certificate Rate and the Class B Certificate Rate,
respectively) through the day preceding such Distribution Date, plus (iv) the
amount of Additional Interest, if any, for such Distribution Date and any
Additional Interest previously due but not deposited into the Class A Interest
Funding Account or the Class B Interest Funding Account, as applicable, on a
prior Distribution Date.

               "Reimbursement Draw Amount" shall have the meaning specified in
Section 4.11(f).

               "Required Amount" shall have the meaning specified in
Section 4.05.

               "Required Draw Amount" shall have the meaning specified in
Section 4.11(c).

               "Required Surplus Finance Charge Amount" shall mean, with respect
to any Due Period, an amount equal to one-twelfth of the product of (a) the
Invested Amount as of the last day of the immediately preceding Due Period and
(b) a decimal to be set by the Sellers, which shall initially equal zero (and
which shall never be less than zero); provided, however, that for purposes of
Section 2.01(b) such decimal shall at all times be deemed to be the decimal as


<PAGE>

                                                                              22

set by the Sellers plus 0.01. The Sellers may, from time to time, change the
decimal to be set for purposes of clause (b) upon notice to the Trustee, each
Rating Agency, the Cash Collateral Depositor and each Additional Cash Collateral
Depositor and, if such decimal is to be increased, upon delivery by each Seller
to the Trustee, the Cash Collateral Depositor and each Additional Cash
Collateral Depositor of a certificate of a Vice President or more senior officer
to the effect that such Seller reasonably believes that such increase will not
have an Adverse Effect and is not reasonably expected to have an Adverse Effect
at any time in the future.

               "Revolving Period" shall mean the period beginning at the close
of business on the Business Day immediately preceding the Cut-Off Date and
ending on the earlier of (a) the close of business on the day the Accumulation
Period commences and (b) the close of business on the day the Early Amortization
Period commences.

               "Sellers Collateral Account" shall have the meaning specified in
Section 4.11(a).

               "Sellers' Allocable Share" shall mean, for each Distribution Date
with respect to a Monthly Period, the Gross Amount for such Distribution Date
less the sum of (a) the Class A Allocable Share for such Distribution Date and
(b) the Class B Allocable Share for such Distribution Date.

               "Sellers' Percentage" shall mean 100% minus (a) the Floating
Allocation Percentage, when used with respect to Finance Charge Receivables and
Defaulted Receivables and Principal Receivables during the Revolving Period, and
(b) the Principal Allocation Percentage, when used with respect to Principal
Receivables during the Accumulation Period and the Early Amortization Period.

               "Series 1998-1" or "Series 1998-1 Certificates" shall mean the
Series of Investor Certificates (including any Additional Investor
Certificates), the terms of which are specified in this Series Supplement.

               "Series 1998-1 Accounts" shall have the meaning set forth in
Section 4.04(c).


<PAGE>

                                                                              23

               "Series 1998-1 Additional Amounts" shall mean, with respect to
any Distribution Date, the sum of the amounts determined pursuant to Sections
4.09(b), (c)(ii), (f) and (i) for such Distribution Date.

               "Series 1998-1 Allocation Percentage" shall mean the Series
Allocation Percentage with respect to Series 1998-1.

               "Series 1998-1 Certificateholders" shall mean the Holders of
Series 1998-1 Certificates.

               "Series 1998-1 Certificateholders' Interest" shall mean the
Class A Certificateholders' Interest and the Class B Certificateholders'
Interest.

               "Series 1998-1 Default Amount" shall mean, with respect to any
Distribution Date, an amount equal to the Allocable Defaulted Amount for the
related Due Period.

               "Series 1998-1 Excess Principal Collections" shall mean that
portion of Excess Principal Collections allocated to Series 1998-1 pursuant to
Section 4.13.

               "Series 1998-1 Monthly Fees" shall mean, with respect to any
Distribution Date, the sum of (a) the amount determined pursuant to Section
4.09(g) and (b) (i) for any Distribution Date with respect to the Revolving
Period or the Early Amortization Period, the amounts determined pursuant to
Section 4.06(a)(iii), Section 4.06(b)(ii) and Section 4.09(e), (ii) for any
Distribution Date with respect to any Monthly Period, the amounts determined
pursuant to Section 4.06(c)(iii) and Section 4.06(d)(ii), or (iii) for any
Distribution Date from and including the February 2000 Distribution Date, to and
including the Distribution Date immediately preceding the Class A Expected Final
Payment Date, the amounts determined pursuant to Section 4.06(a)(iv) and Section
4.06(c)(iv).

               "Series 1998-1 Monthly Interest" shall mean (a) for any
Distribution Date with respect to the Revolving Period or the Early Amortization
Period, the amounts determined pursuant to Section 4.06(a)(i) and (b)(i) and any
CCA Monthly Interest for such Distribution Date or (b) for any Distribution Date
with respect to any Monthly Period, the amounts determined pursuant to Section
4.06(c)(i) and


<PAGE>

                                                                              24


(d)(i) (excluding any amounts relating to the Class A Funding Account
Shortfall).

               "Series 1998-1 Principal Shortfall" shall have the meaning
specified in Section 4.13.

               "Series Supplement" shall mean this Series Supplement as amended
and supplemented from time to time, including without limitation, pursuant to
Section 7.02.

               "Servicer Interchange" shall mean, for any Due Period, the
product of (a) the Floating Allocation Percentage for such Due Period and (b)
the portion of Allocable Finance Charge Collections deposited in the Collection
Account for such Due Period that is attributable to Interchange; provided,
however, that Servicer Interchange for a Due Period shall not exceed one-twelfth
of the product of (i) the sum of the Invested Amount and the CCA Invested
Amount, if any, as of the last day of the preceding Due Period and (ii) 1.50%.

               "Servicing Fee" shall have the meaning specified in Section 3.01.

               "Servicing Fee Rate" shall mean 2.27% per annum.

               "Special Draw Amount" shall have the meaning specified in
Section 4.11(g).

               "Special Payment Date" shall mean each Distribution Date with
respect to the Early Amortization Period.

               "Subordinated Principal Collections" shall mean, with respect to
each Distribution Date, the product of (a) the Floating Allocation Percentage,
with respect to the Revolving Period, or the Principal Allocation Percentage,
with respect to the Accumulation Period or the Early Amortization Period, of
Allocable Principal Collections deposited in the Collection Account for the
related Due Period (or any partial Due Period which occurs as the first Due
Period during the Early Amortization Period) and (b) the Class B Invested
Percentage for such Distribution Date.

               "Subordinated Series" shall mean any Series which, pursuant to
the terms of the related Supplement, is


<PAGE>

                                                                              25

subordinated in any manner to the Series 1998-1 Certificates.

               "Subordinated Series Reallocated Principal Collections" shall
mean, with respect to any Distribution Date, that portion of Collections of
Principal Receivables allocable to a Subordinated Series which, pursuant to the
terms of the related Supplement, are to be reallocated to Series 1998-1 and
treated as a portion of Available Investor Principal Collections for such
Distribution Date.

               "Surplus Finance Charge Collections" shall mean, with respect to
any Due Period, the amount of (a) Reallocated Investor Finance Charge
Collections for the related Distribution Date minus (b) the sum of the amounts
(but not including any amounts relating to any Class A Funding Account Shortfall
in any such case), without duplication, determined pursuant to (x) Section
4.06(a)(i), (ii), (iii) and (iv) or Section 4.06(c)(i), (ii), (iii) and (iv), as
applicable, (y) Section 4.06(b)(i) and (ii) or Section 4.06(d)(i) and (ii), as
applicable, and (z) Section 4.09(a), (b), (c), (d), (e), (f), (g), (h) and (i)
(which determination shall be made without regard to whether such amounts are
actually paid pursuant to Section 4.06 or Section 4.09).

               "Termination Date" shall mean the January 2003 Distribution Date.

               "Termination Proceeds" shall mean any Termination Proceeds
arising out of a sale of Receivables (or interests therein) pursuant to Section
12.02(c) of the Agreement with respect to Series 1998-1.

               "Total Draw Amount" shall have the meaning specified in
Section 4.11(i).

               "Variable Accumulation Series" shall mean each outstanding
Series, other than Series 1998-1 and Excluded Series, which is not a Fixed
Accumulation Series.

               (b) Notwithstanding anything to the contrary in this Series
Supplement or the Agreement, the term "Adverse Effect" shall mean whenever used
in this Series Supplement or the Agreement with respect to Series 1998-1 with
respect to any action, that such action will (i) at the time of its


<PAGE>

                                                                              26

occurrence or at any future date result in the occurrence of an Amortization
Event, (ii) adversely affect the amount of distributions to be made to the Class
A Certificateholders or the Class B Certificateholders or with respect to the
CCA Invested Amount, if any, pursuant to this Series Supplement or the timing of
such distributions or (iii) result at any time in the future in the amount of
Surplus Finance Charge Collections averaged over any three consecutive Due
Periods not being in excess of the Required Surplus Finance Charge Amount for
the last of such three consecutive Due Periods.

               (c) Notwithstanding anything to the contrary in this Series
Supplement or the Agreement, the term "Rating Agency" shall mean, whenever used
in this Series Supplement or the Agreement with respect to Series 1998-1,
Moody's and Standard & Poor's. As used in this Series Supplement and in the
Agreement with respect to Series 1998-1 (including, without limitation, for
purposes of the investment of funds in the Cash Collateral Account up to the
Available Shared Enhancement Amount on any date), "highest investment category"
shall mean (i) in the case of Standard & Poor's, A-1+ or AAA, as applicable, and
(ii) in the case of Moody's, P-1 or Aaa, as applicable; provided, however,
notwithstanding any provision of the Agreement or this Series Supplement, for
purposes of the investment of funds in the Cash Collateral Account (but only to
the extent such funds exceed the Available Shared Enhancement Amount on any
date) and the Class B Interest Funding Account, "highest investment category" as
used in the definition of "Eligible Investments" shall mean (i) in the case of
Standard & Poor's, A-1, A-1+ or AAA, as applicable, and (ii) in the case of
Moody's, P-1 or Aaa, as applicable.

               (d) All capitalized terms used herein and not otherwise defined
herein have the meanings ascribed to them in the Agreement.

               (e) The words "hereof", "herein" and "hereunder" and words of
similar import when used in this Series Supplement shall refer to this Series
Supplement as a whole and not to any particular provision of this Series
Supplement; references to any Article, Section or Exhibit are references to
Articles, Sections and Exhibits in or to this Series Supplement unless otherwise
specified; and the term "including" means "including without limitation".


<PAGE>

                                                                              27

               (f) The term "pro rata" when used in this Series Supplement with
respect to the Cash Collateral Depositor and each Additional Cash Collateral
Depositor (or the Cash Collateral Account and each Additional Cash Collateral
Account, as applicable) shall mean proportionately according to a share or
interest in favor of the Cash Collateral Depositor (or the Cash Collateral
Account) equal to the percentage equivalent of a fraction, the numerator of
which is the Invested Amount (before giving effect to any Additional Issuance
with respect to which the Cash Collateral Depositor has not provided additional
Series Enhancement) and the denominator of which is the Invested Amount (after
giving effect to all Additional Issuances through such date of determination)
and a share or interest in favor of each Additional Cash Collateral Depositor
(or the related Additional Cash Collateral Account) equal to the percentage
equivalent of a fraction, the numerator of which is the increase in the Invested
Amount with respect to which such Additional Cash Collateral Depositor has
provided additional Series Enhancement as a result of the related Additional
Issuance and the denominator of which is the Invested Amount (after giving
effect to all Additional Issuances through such date of determination).

               (g) Notwithstanding any provision of the Agreement or this Series
Supplement, the term "Eligible Institution", when used in the Agreement with
respect to Series 1998-1 shall mean a depository institution organized under the
laws of the United States or any one of the states thereof, including the
District of Columbia (or a domestic branch of a foreign bank), which at all
times (a) has (i) a long-term unsecured debt rating of A2 or better by Moody's
and (ii) a certificate of deposit rating of P-1 by Moody's and (b) has (i) in
the case of the Collection Account, if such depository institution is an
Affiliate of Citicorp, a certificate of deposit rating of A-1 or better by
Standard & Poor's or (ii) for any other depository institution (or for any
Affiliate of Citicorp, in the case of any Series Account), either (x) a
long-term unsecured debt rating of AAA by Standard & Poor's or (y) a certificate
of deposit rating of A-1+ by Standard & Poor's; provided, however, that
"Eligible Institution" as such term is applied to a separate Cash Collateral
Account established exclusively for the deposit of the Initial Class B
Collateral Amount shall have the meaning stated above except that such
institution is


<PAGE>

                                                                              28

required, with respect to Standard & Poor's, to have either a long-term
unsecured debt rating of at least A or a certificate of deposit rating of at
least A-1. However, any deposit account established exclusively for the deposit
of all or a portion of the Initial Class B Collateral Amount shall not otherwise
be considered to be separate from the deposit account containing the related
amount of the Initial Shared Collateral Amount and the two together shall
constitute one Cash Collateral Account for the purposes of this Supplement.

               Section 2.02. Amendment to Definition of "Series Adjusted
Invested Amount". (a) Notwithstanding any provision of the Agreement or this
Series Supplement, the term "Series Adjusted Invested Amount" or "Adjusted
Invested Amount", when used in the Agreement or this Series Supplement with
respect to Series 1998-1, shall mean, for any Due Period, the initial principal
amount of the Series 1998-1 Certificates (including the initial principal amount
of any Additional Investor Certificates issued through such Due Period) after
subtracting therefrom the excess, if any, of the cumulative amount of Investor
Charge-Offs as of the last day of the immediately preceding Due Period over the
aggregate reimbursement of Investor Charge-Offs as of such last day.

               (b) Each of the Sellers hereby represents and warrants to the
Trustee as of the date of this Series Supplement that, on or prior to the date
of this Series Supplement, the conditions set forth in Section 13.01(a) of the
Agreement have been satisfied with respect to the amendment set forth in Section
2.02(a).


                                   ARTICLE III

                              Servicer and Trustee

               Section 3.01. Servicing Compensation. A monthly servicing fee
(the "Servicing Fee") shall be payable to the Servicer, in arrears, on each
Distribution Date in respect of any Due Period (or portion thereof) occurring
prior to the earlier of the first Distribution Date following the Termination
Date and the first Distribution Date on which the Invested Amount and the CCA
Invested


<PAGE>

                                                                              29


Amount, if any, are zero, in the aggregate amount specified below.

               On each Distribution Date, Servicer Interchange with respect to
the related Due Period that is on deposit in the Collection Account shall be
withdrawn from the Collection Account and paid to the Servicer in payment of a
portion of the Servicing Fee payable by the Series 1998-1 Certificateholders
with respect to such Due Period.

               The share of the Servicing Fee allocable to the Class A
Certificateholders (after giving effect to the distribution of Servicer
Interchange, if any, to the Servicer) with respect to any Distribution Date (the
"Class A Monthly Servicing Fee") shall be equal to one-twelfth of the product of
(a) the Net Servicing Fee Rate, (b) the sum of the Invested Amount and the CCA
Invested Amount, if any, as of the last day of the Due Period second preceding
such Distribution Date and (c) the Class A Invested Percentage with respect to
such Distribution Date; provided, however, with respect to the first
Distribution Date, the Class A Monthly Servicing Fee shall be equal to the
Servicing Fee accrued on the Class A Initial Invested Amount at the Net
Servicing Fee Rate for the period from the Closing Date to but excluding the
first Distribution Date, calculated on the basis of a 360-day year of twelve
30-day months and provided further, that with respect to the first Distribution
Date of the related Due Period in which an Additional Issuance Date occurs the
Class A Monthly Servicing Fee shall be increased by an amount equal to the
product of (a) the Net Servicing Fee Rate, (b) a fraction, the numerator of
which is 30 minus the actual number of days in the period from and including the
fifteenth day of the calendar month in which such Additional Issuance Date
occurs to but excluding such Additional Issuance Date and the denominator of
which is 360, times (c) the increase in the Invested Amount after giving effect
to the related Additional Issuance and (d) the Class A Invested Percentage with
respect to such Distribution Date. The share of the Servicing Fee allocable to
the Class B Certificateholders (after giving effect to the distribution of
Servicer Interchange, if any, to the Servicer) with respect to any Distribution
Date (the "Class B Monthly Servicing Fee") shall be equal to one-twelfth of the
product of (a) the Net Servicing Fee Rate, (b) the sum of the Invested Amount
and the CCA Invested Amount, if any,


<PAGE>

                                                                              30


as of the last day of the Due Period second preceding such Distribution Date and
(c) the Class B Invested Percentage with respect to such Distribution Date;
provided, however, with respect to the first Distribution Date, the Class B
Monthly Servicing Fee shall be equal to the Servicing Fee accrued on the Class B
Initial Invested Amount at the Net Servicing Fee Rate for the period from the
Closing Date to but excluding the first Distribution Date, calculated on the
basis of a 360-day year of twelve 30-day months and provided further, that with
respect to the first Distribution Date of the related Due Period in which an
Additional Issuance Date occurs, the Class B Monthly Servicing Fee shall be
increased by an amount equal to the product of (a) the Net Servicing Fee Rate,
(b) a fraction, the numerator of which is 30 minus the actual number of days in
the period from and including the fifteenth day of the calendar month in which
such Additional Issuance Date occurs to but excluding such Additional Issuance
Date and the denominator of which is 360, times (c) the increase in the Invested
Amount after giving effect to the related Additional Issuance and (d) the Class
B Invested Percentage with respect to such Distribution Date. The share of the
Servicing Fee allocable, on a pro rata basis, to the Cash Collateral Depositor
and each Additional Cash Collateral Depositor (after giving effect to the
distribution of Servicer Interchange, if any, to the Servicer) with respect to
any Distribution Date relating to the Early Amortization Period, following the
Distribution Date on which the Class A Invested Amount and the Class B Invested
Amount are paid in full (the "CCA Monthly Servicing Fee"), shall be equal to
one-twelfth of the product of (a) the Net Servicing Fee Rate and (b) the CCA
Invested Amount, if any, as of the last day of the Due Period second preceding
such Distribution Date.

               On each Distribution Date, the Sellers shall pay a portion of the
Servicing Fee with respect to the related Due Period in an amount equal to
one-twelfth of the product of (a) the Servicing Fee Rate, (b) the Sellers'
Participation Amount as of the last day of the Due Period second preceding such
Distribution Date (or, if a Lump Addition occurs or a removal of Accounts
pursuant to Section 2.10 of the Agreement occurs in the following Due Period,
the weighted average of the Sellers' Participation Amount on the date on which
such Lump Addition or removal of Accounts occurs (after giving effect thereto)
and the last day of the second


<PAGE>

                                                                              31


preceding Due Period) and (c) the Series 1998-1 Allocation Percentage for the
related Due Period. In no event shall the Trust, the Trustee, the Series 1998-1
Certificate-holders, the Cash Collateral Depositor or any Additional Cash
Collateral Depositor be liable for the share of the Servicing Fee to be paid by
the Sellers.

               The (i) Class A Monthly Servicing Fee shall be payable to the
Servicer solely to the extent amounts are available for distribution pursuant to
Section 4.06(a)(iii) or (c)(iii), as the case may be, (ii) Class B Monthly
Servicing Fee shall be payable to the Servicer solely to the extent amounts are
available for distribution pursuant to Section 4.06(b)(ii) or (d)(ii), as the
case may be, and (iii) CCA Monthly Servicing Fee shall be payable to the
Servicer solely to the extent amounts are available for distribution pursuant to
Section 4.09(e).

               Section 3.02.  Trustee Appointment of Agents.  The Trustee may
appoint one or more agents to perform any of theTrustee's duties,
responsibilities or obligations with respect to Series 1998-1; provided,
however, that regardless of the appointment of any agent pursuant to this
Section 3.02, the Trustee shall continue to be fully responsible for all of its
duties, responsibilities and obligations with respect to Series 1998-1.


                                   ARTICLE IV

                 Rights of Series 1998-1 Certificateholders and
                    Allocation and Application of Collections

               Section 4.01. Allocations. (a) Allocations. Collections of
Finance Charge Receivables and Principal Receivables, Defaulted Receivables and
Miscellaneous Payments allocated to Series 1998-1 pursuant to Article IV of the
Agreement (and, as described herein, Collections of Finance Charge Receivables
reallocated from other Series in Group One) shall be allocated and distributed
or reallocated as set forth in this Article.

               (b) Payments to Sellers. The Servicer shall withdraw from the
Collection Account and pay to the Sellers on the dates set forth below the
following amounts:


<PAGE>

                                                                              32

               (i) on Deposit Dates with respect to the Revolving Period and the
        Early Amortization Period:

                      (A) an amount equal to the Sellers' Percentage for the
               related Due Period of Allocable Finance Charge Collections,
               minus, if Citibank (South Dakota) or an Affiliate of Citibank
               (South Dakota) is no longer the Servicer, the portion of the
               Servicing Fee with respect to the related Due Period that is
               required to be paid by the Sellers (which shall be withdrawn from
               the Collection Account and paid to the Servicer on the related
               Distribution Date); and

                      (B) an amount equal to the Sellers' Percentage for the
               related Due Period of Allocable Principal Collections, if the
               Sellers' Participation Amount (determined after giving effect to
               any Principal Receivables transferred to the Trust on such
               Deposit Date) exceeds zero; and

               (ii) on Deposit Dates with respect to any Monthly Period:

                      (A) an amount equal to the Sellers' Allocable Share for
               the related Distribution Date, minus, if Citibank (South Dakota)
               or an Affiliate of Citibank (South Dakota) is no longer the
               Servicer, the portion of the Servicing Fee with respect to the
               related Due Period that is required to be paid by the Sellers
               (which shall be withdrawn from the Collection Account and paid to
               the Servicer on the related Distribution Date); and

                      (B) an amount equal to the Sellers' Percentage for the
               related Due Period of Allocable Principal Collections, if the
               Sellers' Participation Amount (determined after giving effect to
               any Principal Receivables transferred to the Trust on such
               Deposit Date) exceeds zero.

               The withdrawals to be made from the Collection Account pursuant
to this Section 4.01(b) do not apply to deposits into the Collection Account
that do not represent Collections, including Transfer Deposit Amounts,
Adjustment


<PAGE>

                                                                              33

Payments, payment of the purchase price for the Certificateholders' Interest
pursuant to Section 2.06 or 10.01 of the Agreement, payment of the purchase
price for the Series 1998-1 Certificateholders' Interest pursuant to Section
7.01 of this Series Supplement and proceeds from the sale, disposition or
liquidation of Receivables pursuant to Section 9.02 or 12.02 of the Agreement.

               Section 4.02. Determination of Monthly Interest. (a) The amount
of monthly interest ("Class A Monthly Interest") distributable from the
Collection Account with respect to the Class A Certificates on any Distribution
Date shall be an amount equal to one-twelfth of the product of (i) the Class A
Certificate Rate and (ii) the outstanding principal balance of the Class A
Certificates as of the close of business on the preceding Distribution Date
(after giving effect to any distribution of Class A Monthly Principal on such
preceding Distribution Date), minus, for each Distribution Date with respect to
the Accumulation Period, the aggregate amount of all deposits of Class A Monthly
Principal previously made to the Class A Principal Funding Account; provided,
however, with respect to the first Distribution Date, Class A Monthly Interest
shall be equal to $3,713,541.67; and provided further, that with respect to the
first Distribution Date of the related Due Period in which an Additional
Issuance Date occurs, Class A Monthly Interest shall be increased by the amount
of interest accrued and payable at the Class A Certificate Rate on the principal
amount of Additional Class A Certificates through but excluding such
Distribution Date. Class A Monthly Interest shall be calculated on the basis of
a 360- day year of twelve 30-day months.

               On the Determination Date preceding each Payment Date, the
Servicer shall determine the excess, if any (the "Class A Interest Shortfall")
of (x) the aggregate Class A Monthly Interest plus the aggregate Class A Covered
Amount for the Interest Period applicable to such Payment Date over (y) the
amount which will be on deposit in the Class A Interest Funding Account on such
Payment Date. If the Class A Interest Shortfall with respect to any Payment Date
is greater than zero, an additional amount ("Class A Additional Interest") equal
to one-twelfth of the product of (i) the Class A Certificate Rate and (ii) such
Class A Interest Shortfall (or the portion thereof which has not been paid to


<PAGE>

                                                                              34

Class A Certificateholders) shall be payable as provided herein with respect to
the Class A Certificates on each Distribution Date following such Payment Date
to and including the Payment Date on which such Class A Interest Shortfall is
paid to Class A Certificateholders. Notwithstanding anything to the contrary
herein, Class A Additional Interest shall be payable or distributed to Class A
Certificateholders only to the extent permitted by applicable law.

               (b) The amount of monthly interest ("Class B Monthly Interest")
distributable from the Collection Account with respect to the Class B
Certificates on any Distribution Date shall be an amount equal to one-twelfth of
the product of (i) the Class B Certificate Rate and (ii) the Class B Invested
Amount as of the close of business on the preceding Distribution Date (after
giving effect to any increase or decrease of the Class B Invested Amount on such
preceding Distribution Date); provided, however, with respect to the first
Distribution Date, Class B Monthly Interest shall be equal to $242,833.33; and
provided further, that with respect to the first Distribution Date of the
related Due Period in which an Additional Issuance Date occurs, Class B Monthly
Interest shall be increased by the amount of interest accrued and payable at the
Class B Certificate Rate on the principal amount of Additional Class B
Certificates through but excluding such Distribution Date. Class B Monthly
Interest shall be calculated on the basis of a 360- day year of twelve 30-day
months.

               On the Determination Date preceding each Payment Date, the
Servicer shall determine the excess, if any (the "Class B Interest Shortfall"),
of (x) the aggregate Class B Monthly Interest for the Interest Period applicable
to such Payment Date over (y) the amount which will be on deposit in the Class B
Interest Funding Account on such Payment Date. If the Class B Interest Shortfall
with respect to any Payment Date is greater than zero, an additional amount
("Class B Additional Interest") equal to one-twelfth of the product of (i) the
Class B Certificate Rate and (ii) such Class B Interest Shortfall (or the
portion thereof which has not been paid to Class B Certificateholders) shall be
payable as provided herein with respect to the Class B Certificates on each
Distribution Date following such Payment Date to and including the Payment Date
on which such


<PAGE>

                                                                              35

Class B Interest Shortfall is paid to Class B Certificateholders.
Notwithstanding anything to the contrary herein, Class B Additional Interest
shall be payable or distributed to Class B Certificateholders only to the extent
permitted by applicable law.

               Section 4.03. Determination of Monthly Principal. (a) The amount
of monthly principal ("Class A Monthly Principal") distributable from the
Collection Account with respect to the Class A Certificates on each Distribution
Date beginning with the first to occur of (i) the first Special Payment Date, if
any, and (ii) the first Distribution Date to occur with respect to the
Accumulation Period, shall be equal to the Available Investor Principal
Collections on deposit in the Collection Account with respect to such
Distribution Date; provided, however, that for each Distribution Date with
respect to any Monthly Period, Class A Monthly Principal shall not exceed the
Controlled Distribution Amount for such Distribution Date; and provided further
that Class A Monthly Principal shall not exceed the Class A Invested Amount.

               (b) The amount of monthly principal ("Class B Monthly Principal")
distributable from the Collection Account with respect to the Class B
Certificates on each Distribution Date beginning with the Class B Principal
Commencement Date, shall be equal to the Available Investor Principal
Collections on deposit in the Collection Account with respect to such
Distribution Date (minus the portion of such Available Investor Principal
Collections applied to Class A Monthly Principal on such Distribution Date);
provided, however, that Class B Monthly Principal shall not exceed the Class B
Invested Amount.

               Section 4.04. Establishment of Funding Accounts. (a)(i) The
Servicer, for the benefit of the Class A Certificateholders, shall establish and
maintain in the name of the Trustee, on behalf of the Trust, an Eligible Deposit
Account (the "Class A Interest Funding Account"), bearing a designation clearly
indicating that the funds deposited therein are held for the benefit of the
Class A Certificateholders. The Class A Interest Funding Account shall initially
be established with Citibank, N.A.


<PAGE>

                                                                              36

               (ii) The Servicer, for the benefit of the Class B
Certificateholders, shall establish and maintain in the name of the Trustee, on
behalf of the Trust, an Eligible Deposit Account (the "Class B Interest Funding
Account"), bearing a designation clearly indicating that the funds deposited
therein are held for the benefit of the Class B Certificateholders. The Class B
Interest Funding Account shall initially be established with Citibank, N.A.

               (iii) Funds on deposit in the Interest Funding Accounts shall be
invested by the Servicer on behalf of the Trustee in Eligible Investments
selected by the Servicer. All such Eligible Investments shall be held by the
Trustee for the benefit of the Class A Certificateholders or the Class B
Certificateholders, as applicable; provided that on each Distribution Date, all
interest and other investment earnings (net of losses and investment expenses)
on funds on deposit in the Interest Funding Accounts shall be paid to the
Sellers. Funds deposited in the Interest Funding Accounts on any Distribution
Date (which are not distributed to Class A Certificateholders or Class B
Certificateholders, as applicable, pursuant to Section 4.07 on such Distribution
Date) shall be invested in Eligible Investments that will mature so that such
funds will be available at the close of business on the Transfer Date preceding
the following Distribution Date. Funds deposited in either Interest Funding
Account on a Transfer Date (which immediately precedes a Payment Date) upon the
maturity of any Eligible Investments are not required to be invested overnight.

               (b)(i) The Servicer, for the benefit of the Class A
Certificateholders, shall establish and maintain in the name of the Trustee, on
behalf of the Trust, an Eligible Deposit Account (the "Class A Principal Funding
Account"), bearing a designation clearly indicating that the funds deposited
therein are held for the benefit of the Class A Certificateholders. The Class A
Principal Funding Account shall initially be established with Citibank, N.A.

               (ii) Funds on deposit in the Class A Principal Funding Account
shall be invested by the Servicer on behalf of the Trustee in Eligible
Investments selected by the Servicer. All such Eligible Investments shall be
held by the Trustee for the benefit of the Class A Certificateholders; provided
that on each Distribution Date


<PAGE>

                                                                              37

all interest and other investment income (net of investment expenses) on funds
on deposit therein shall be applied as set forth in clause (iii) below. Funds on
deposit in the Class A Principal Funding Account shall be invested in Eligible
Investments that will mature so that such funds will be available at the close
of business on the Transfer Date preceding the following Distribution Date.
Funds deposited in the Class A Principal Funding Account on a Transfer Date
(which immediately precedes a Payment Date) upon the maturity of any Eligible
Investments are not required to be invested overnight.

               (iii) On each Distribution Date with respect to the Accumulation
Period, the Servicer shall withdraw from the Class A Principal Funding Account
and deposit in the Class A Interest Funding Account all interest and other
investment income (net of investment expenses) on funds then on deposit in the
Class A Principal Funding Account; provided, however, that Class A Excess
Investment Proceeds, if any, with respect to any Distribution Date, shall be
deposited in the Collection Account and treated as a portion of the Gross
Amount.

               (iv) Reinvested interest and other investment income on funds
deposited in the Class A Principal Funding Account shall not be considered to be
principal amounts on deposit therein for purposes of this Series Supplement.

               (c)(i) The Trustee shall possess all right, title and interest in
all funds on deposit from time to time in the Interest Funding Accounts and the
Class A Principal Funding Account (collectively, the "Series 1998-1 Accounts")
and in all proceeds thereof. The Series 1998-1 Accounts shall be under the sole
dominion and control of the Trustee for the benefit of the Class A
Certificateholders, Class B Certificateholders, the Cash Collateral Depositor or
any Additional Cash Collateral Depositor, as the case may be. If, at any time,
any of the Series 1998-1 Accounts ceases to be an Eligible Deposit Account, the
Trustee (or the Servicer on its behalf) shall within 10 Business Days (or such
longer period, not to exceed 30 calendar days, as to which each Rating Agency
may consent) establish a new Series 1998-1 Account meeting the conditions
specified in paragraph (a)(i) or (ii) or (b)(i) above, as applicable, as an
Eligible


<PAGE>

                                                                              38

Deposit Account and shall transfer any cash and/or any investments to such new
Series 1998-1 Account.

               (ii) Pursuant to the authority granted to the Servicer in Section
3.01(b) of the Agreement, the Servicer shall have the power, revocable by the
Trustee, to make withdrawals and payments or to instruct the Trustee to make
withdrawals and payments from the Series 1998-1 Accounts for the purposes of
carrying out the Servicer's or Trustee's duties hereunder. Pursuant to the
authority granted to the Paying Agent in Section 5.01 of this Series Supplement
and Section 6.07 of the Agreement, the Paying Agent shall have the power,
revocable by the Trustee, to withdraw funds from the Series 1998-1 Accounts for
the purpose of making distributions to the Series 1998-1 Certificateholders.

               Section 4.05. Required Amount. With respect to each Distribution
Date, on the related Determination Date, the Servicer shall determine the amount
(the "Required Amount"), if any, by which (a) the sum of (i) Class A Monthly
Interest for such Distribution Date, (ii) any Class A Monthly Interest
previously due but not deposited in the Class A Interest Funding Account on a
prior Distribution Date, (iii) Class A Additional Interest, if any, for such
Distribution Date and any Class A Additional Interest previously due but not
deposited into the Class A Interest Funding Account on a prior Distribution Date
(but not including any amount relating to any Class A Funding Account
Shortfall), (iv) at such time as Citibank (South Dakota) or an Affiliate of
Citibank (South Dakota) is no longer the Servicer, the Class A Monthly Servicing
Fee for such Distribution Date and (v) the Class A Investor Default Amount, if
any, for such Distribution Date exceeds (b)(i) the product of (x) Reallocated
Investor Finance Charge Collections for such Distribution Date and (y) the Class
A Invested Percentage for such Distribution Date, minus (ii) if Citibank (South
Dakota) or an Affiliate of Citibank (South Dakota) is the Servicer, the portion
of the Class A Monthly Servicing Fee for such Distribution Date that will be
paid on such Distribution Date pursuant to Section 4.06(a)(iii) or (c)(iii), as
the case may be, out of funds on deposit in the Collection Account available
therefor. The Servicer will give the Trustee notice of the Required Amount on
any Determination Date on which the Servicer determines that the Required Amount
is greater than zero.


<PAGE>

                                                                              39

               Section 4.06. Application of Reallocated Investor Finance Charge
Collections and Available Investor Principal Collections. The Servicer shall
apply (if Citibank (South Dakota) is the Servicer and the Collection Account is
maintained with Citibank (South Dakota)) or shall cause the Trustee to apply, on
each Distribution Date, Allocable Finance Charge Collections (other than any
portion thereof reallocated to other Series in Group One), Collections of
Finance Charge Receivables reallocated to Series 1998-1 from other Series in
Group One and Available Investor Principal Collections on deposit in the
Collection Account with respect to such Distribution Date, to make the following
distributions:

               (a) Subject to Section 4.06(c), on each Distribution Date, an
amount equal to the product of (x) Reallocated Investor Finance Charge
Collections with respect to such Distribution Date and (y) the Class A Invested
Percentage for such Distribution Date, will be distributed in the following
priority; provided, however, that if such funds on deposit in the Collection
Account available therefor are less than the sum of the amounts specified in
paragraphs (i), (ii) and (iii) below, such funds shall be allocated among such
paragraphs in proportion to the respective amounts specified in each such
paragraph; and provided further that funds allocated to the Class A
Certificateholders pursuant to paragraphs (i) and (ii) below will be applied
first to the amount specified under paragraph (i) below and second to the amount
specified under paragraph (ii) below:

               (i) an amount equal to Class A Monthly Interest for such
        Distribution Date, plus the amount of any Class A Monthly Interest
        previously due but not deposited into the Class A Interest Funding
        Account on a prior Distribution Date, plus the amount of any Class A
        Additional Interest for such Distribution Date and any Class A
        Additional Interest previously due but not deposited into the Class A
        Interest Funding Account on a prior Distribution Date, plus the amount
        of any Class A Funding Account Shortfall previously due but not
        deposited into the Class A Interest Funding Account on a prior
        Distribution Date shall be deposited by the Servicer or the Trustee into
        the Class A Interest Funding Account;


<PAGE>

                                                                              40

               (ii) an amount equal to the Class A Investor Default Amount for
        such Distribution Date shall be treated as a portion of Investor
        Principal Collections for such Distribution Date;

               (iii) an amount equal to the Class A Monthly Servicing Fee for
        such Distribution Date shall be distributed to the Servicer (unless such
        amount has been netted against deposits to the Collection Account);

               (iv) on each Distribution Date beginning with the February 2000
        Distribution Date to but excluding the Distribution Date with respect to
        the first Monthly Period, an amount equal to the Class A Investment Fee,
        if any, for such Distribution Date shall be distributed to the Sellers
        (unless such amount has been netted against deposits to the Collection
        Account); and

               (v) the balance, if any, shall constitute Excess Finance Charge
        Collections and shall be allocated and distributed as set forth in
        Section 4.09.

               (b) Subject to Section 4.06(d), on each Distribution Date, an
amount equal to the product of (x) Reallocated Investor Finance Charge
Collections with respect to such Distribution Date and (y) the Class B Invested
Percentage for such Distribution Date, will be distributed in the following
priority; provided, however, that if such funds on deposit in the Collection
Account available therefor are less than the sum of the amounts specified in
paragraphs (i) and (ii) below, such funds shall be allocated between such
paragraphs in proportion to the respective amounts specified in each such
paragraph:

               (i) an amount equal to Class B Monthly Interest for such
        Distribution Date, plus the amount of any Class B Monthly Interest
        previously due but not deposited into the Class B Interest Funding
        Account on a prior Distribution Date, plus the amount of any Class B
        Additional Interest for such Distribution Date and any Class B
        Additional Interest previously due but not deposited into the Class B
        Interest Funding Account on a prior Distribution Date, shall be
        deposited by the


<PAGE>

                                                                              41

        Servicer or the Trustee into the Class B Interest Funding Account;

               (ii) an amount equal to the Class B Monthly Servicing Fee for
        such Distribution Date shall be distributed to the Servicer (unless such
        amount has been netted against deposits to the Collection Account); and

               (iii) the balance, if any, shall constitute Excess Finance Charge
        Collections and shall be allocated and distributed as set forth in
        Section 4.09.

               (c) On each Distribution Date with respect to a Monthly Period,
an amount equal to the Class A Allocable Share with respect to such Distribution
Date will be distributed in the following priority; provided, however, that if
such funds on deposit in the Collection Account available therefor are less than
the sum of the amounts specified in paragraphs (i), (ii) and (iii) below, such
funds shall be allocated among such paragraphs in proportion to the respective
amounts specified in each such paragraph; and provided further that funds
allocated to the Class A Certificateholders pursuant to paragraphs (i) and (ii)
below will be applied first to the amount specified under paragraph (i) below
and second to the amount specified under paragraph (ii) below:

               (i) an amount equal to Class A Monthly Interest for such
        Distribution Date, plus the amount of any Class A Monthly Interest
        previously due but not deposited into the Class A Interest Funding
        Account on a prior Distribution Date, plus (without duplication) the
        amount of any Class A Funding Account Shortfall for such Distribution
        Date and the amount of any Class A Funding Account Shortfall previously
        due but not deposited into the Class A Interest Funding Account on a
        prior Distribution Date, plus the amount of any Class A Additional
        Interest for such Distribution Date and any Class A Additional Interest
        previously due but not deposited into the Class A Interest Funding
        Account on a prior Distribution Date, shall be deposited by the Servicer
        or the Trustee into the Class A Interest Funding Account;


<PAGE>

                                                                              42

               (ii) an amount equal to the Class A Investor Default Amount for
        such Distribution Date shall be treated as a portion of Investor
        Principal Collections for such Distribution Date;

               (iii) an amount equal to the Class A Monthly Servicing Fee for
        such Distribution Date shall be distributed to the Servicer (unless such
        amount has been netted against deposits to the Collection Account);

               (iv) prior to and including the Distribution Date immediately
        preceding the Class A Expected Final Payment Date, an amount equal to
        the Class A Investment Fee, if any, for such Distribution Date shall be
        distributed to the Sellers (unless such amount has been netted against
        deposits to the Collection Account); and

               (v) the balance, if any, shall constitute Excess Finance Charge
        Collections and shall be allocated and distributed as set forth in
        Section 4.09.

               (d) On each Distribution Date with respect to a Monthly Period,
an amount equal to the Class B Allocable Share with respect to such Distribution
Date will be distributed in the following priority; provided, however, that if
such funds on deposit in the Collection Account available therefor are less than
the sum of the amounts specified in paragraphs (i) and (ii) below, such funds
shall be allocated between such paragraphs in proportion to the respective
amounts specified in each such paragraph:

               (i) an amount equal to Class B Monthly Interest for such
        Distribution Date, plus the amount of any Class B Monthly Interest
        previously due but not deposited into the Class B Interest Funding
        Account on a prior Distribution Date, plus the amount of any Class B
        Additional Interest for such Distribution Date and any Class B
        Additional Interest previously due but not deposited into the Class B
        Interest Funding Account on a prior Distribution Date, shall be
        deposited by the Servicer or the Trustee into the Class B Interest
        Funding Account;


<PAGE>

                                                                              43

               (ii) an amount equal to the Class B Monthly Servicing Fee for
        such Distribution Date shall be distributed to the Servicer (unless such
        amount has been netted against deposits to the Collection Account); and

               (iii) the balance, if any, shall constitute Excess Finance Charge
        Collections and shall be allocated and distributed as set forth in
        Section 4.09.

               (e) On each Distribution Date with respect to the Revolving
Period, an amount equal to the Available Investor Principal Collections
deposited in the Collection Account for the related Due Period shall be treated
as Excess Principal Collections and applied in accordance with Section 4.04 of
the Agreement.

               (f) On each Distribution Date with respect to the Accumulation
Period or the Early Amortization Period, an amount equal to Available Investor
Principal Collections deposited in the Collection Account for the related Due
Period will be distributed in the following priority:

               (i) an amount equal to Class A Monthly Principal for such
        Distribution Date, up to the Class A Invested Amount, shall be deposited
        by the Servicer or the Trustee into the Class A Principal Funding
        Account;

               (ii) for each Distribution Date with respect to the Accumulation
        Period prior to the Class B Principal Commencement Date, unless an
        Amortization Event has occurred, after giving effect to the distribution
        referred to in clause (i) above, an amount equal to the balance, if any,
        of such Available Investor Principal Collections then on deposit in the
        Collection Account shall be treated as Excess Principal Collections and
        applied in accordance with Section 4.04 of the Agreement;

               (iii) for each Distribution Date, beginning with the Class B
        Principal Commencement Date, after giving effect to the distribution
        referred to in clause (i) above, an amount equal to the balance, if any,
        of such Available Investor Principal Collections then on deposit in the
        Collection Account, to the extent of


<PAGE>

                                                                              44

        Class B Monthly Principal, shall be distributed by the Servicer or the
        Trustee to the Class B Certificateholders;

               (iv) for each Distribution Date with respect to the Early
        Amortization Period, beginning with the Distribution Date on which the
        Class A Invested Amount and the Class B Invested Amount are paid in
        full, after giving effect to the distributions referred to above, an
        amount equal to the balance, if any, of such Available Investor
        Principal Collections then on deposit in the Collection Account, to the
        extent of CCA Monthly Principal, if any, shall be distributed, pro rata,
        by the Servicer or the Trustee to the Cash Collateral Depositor and each
        Additional Cash Collateral Depositor, in accordance with the Loan
        Agreement and each Additional Loan Agreement, respectively; and

               (v) for each Distribution Date, after giving effect to the
        distributions referred to above, an amount equal to the balance, if any,
        of such Available Investor Principal Collections then on deposit in the
        Collection Account shall be treated as Excess Principal Collections and
        applied in accordance with Section 4.04 of the Agreement.

               Section 4.07. Distributions to Series 1998-1 Certificateholders.
(a) The Servicer shall make (if Citibank (South Dakota) is the Servicer and the
Collection Account is maintained with Citibank (South Dakota)) or shall cause
the Trustee to make the following distributions at the following times from the
Class A Interest Funding Account and the Class A Principal Funding Account:

               (i) on each Payment Date, all amounts on deposit in the Class A
        Interest Funding Account shall be distributed to the Paying Agent for
        payment to the Class A Certificateholders; and

               (ii) on each Special Payment Date and on the Class A Expected
        Final Payment Date, all amounts on deposit in the Class A Principal
        Funding Account, to the extent of the Class A Invested Amount, shall be
        distributed to


<PAGE>

                                                                              45

        the Paying Agent for payment to the Class A Certificateholders.

               (b) The Servicer shall make (if Citibank (South Dakota) is the
Servicer and the Collection Account is maintained with Citibank (South Dakota))
or shall cause the Trustee to make the following distributions at the following
times from the Class B Interest Funding Account and the Collection Account:

               (i) on each Payment Date, all amounts on deposit in the Class B
        Interest Funding Account shall be distributed to the Paying Agent for
        payment to the Class B Certificateholders; and

               (ii) on each Special Payment Date and on the Class B Expected
        Final Payment Date, all amounts on deposit in the Collection Account
        which are to be distributed to the Class B Certificateholders pursuant
        to this Series Supplement, to the extent of the principal amount of the
        Class B Certificates, shall be distributed to the Paying Agent for
        payment to the Class B Certificateholders.

               (c) The distributions to be made pursuant to this Section are
subject to the provisions of Sections 2.06, 9.02, 10.01 and 12.02 of the
Agreement and Sections 8.01 and 8.02 of this Series Supplement.

               Section 4.08. Investor Charge-Offs. (a) If on any Distribution
Date the Required Amount for such Distribution Date exceeds the sum of (x) the
amount of Subordinated Principal Collections with respect to such Distribution
Date, (y) the amount of Excess Finance Charge Collections with respect to such
Distribution Date and (z) the Available Shared Enhancement Amount with respect
to such Distribution Date, the CCA Invested Amount shall be reduced by the
amount of such excess, but not by more than the Class A Investor Default Amount
for such Distribution Date. In the event that such reduction would cause the CCA
Invested Amount to be a negative number, the CCA Invested Amount shall be
reduced to zero, and the Class B Invested Amount shall be reduced by the amount
by which the CCA Invested Amount would have been reduced below zero, but not by
more than the excess, if any, of the Class A Investor Default


<PAGE>

                                                                              46

Amount for such Distribution Date over the amount of such reduction, if any, of
the CCA Invested Amount. In the event that such reduction would cause the Class
B Invested Amount to be a negative number, the Class B Invested Amount shall be
reduced to zero, and the Class A Invested Amount will be reduced by the amount
by which the Class B Invested Amount would have been reduced below zero, but not
by more than the excess, if any, of the Class A Investor Default Amount for such
Distribution Date over the aggregate amount of the reductions, if any, of the
CCA Invested Amount and the Class B Invested Amount for such Distribution Date
pursuant to this Section 4.08(a) (a "Class A Investor Charge-Off"). Class A
Investor Charge-Offs shall thereafter be reimbursed and the Class A Invested
Amount increased (but not by an amount in excess of the aggregate Class A
Investor Charge-Offs) on any Distribution Date by the sum of (i) Allocable
Miscellaneous Payments with respect to such Distribution Date and (ii) the
amount of Excess Finance Charge Collections allocated and available for that
purpose pursuant to Section 4.09(b).

               (b) If on any Distribution Date the Class B Investor Default
Amount for such Distribution Date exceeds the sum of (x) the amount of Excess
Finance Charge Collections with respect to such Distribution Date which are
allocated and available to pay the Class B Investor Default Amount pursuant to
Section 4.09(d) and (y) the portion, if any, of the Available Shared Enhancement
Amount with respect to such Distribution Date (after giving effect to any
withdrawal from the Cash Collateral Account or any Additional Cash Collateral
Account to fund the Required Draw Amount with respect to such Distribution
Date), then the CCA Invested Amount shall be reduced by the amount of such
excess. In the event that such reduction would cause the CCA Invested Amount to
be a negative number, the CCA Invested Amount shall be reduced to zero, and the
Class B Invested Amount shall be reduced by the amount by which the CCA Invested
Amount would have been reduced below zero (a "Class B Investor Charge-Off").
Class B Investor Charge-Offs shall thereafter be reimbursed and the Class B
Invested Amount increased (but not by an amount in excess of the aggregate Class
B Investor Charge-Offs) on any Distribution Date by the sum of (i) Allocable
Miscellaneous Payments with respect to such Distribution Date (but only to the
extent such amount is not required to reimburse Class A Investor


<PAGE>

                                                                              47

Charge-Offs pursuant to paragraph (a) above) and (ii) the amount of Excess
Finance Charge Collections allocated and available for that purpose pursuant to
Section 4.09(f).

               (c) If on any Distribution Date Subordinated Principal
Collections for such Distribution Date are allocated pursuant to Section
4.10(a), the CCA Invested Amount shall be reduced by the amount of such
Subordinated Principal Collections. In the event that such reduction would cause
the CCA Invested Amount to be a negative number, the CCA Invested Amount shall
be reduced to zero, and the Class B Invested Amount shall be reduced by the
amount by which the CCA Invested Amount would have been reduced below zero.

               (d) If on any Distribution Date the CCA Default Amount for such
Distribution Date exceeds the amount of Excess Finance Charge Collections with
respect to such Distribution Date which are allocated and available to pay the
CCA Default Amount pursuant to Section 4.09(h), then the CCA Invested Amount
shall be reduced by the amount of such excess (a "CCA Charge-Off"). CCA
Charge-Offs shall thereafter be reimbursed and the CCA Invested Amount increased
(but not by an amount in excess of the aggregate CCA Charge-Offs) on any
Distribution Date by the sum of (i) Allocable Miscellaneous Payments with
respect to such Distribution Date (but only to the extent such amount is not
required to reimburse Class A Investor Charge-Offs or Class B Investor
Charge-Offs pursuant to paragraph (a) or (b) above) and (ii) the amount of
Excess Finance Charge Collections allocated and available for that purpose
pursuant to Section 4.09(i).

               Section 4.09. Excess Finance Charge Collections. The Servicer
shall apply (if Citibank (South Dakota) is the Servicer and the Collection
Account is maintained with Citibank (South Dakota)) or shall cause the Trustee
to apply, on each Distribution Date (or on the related Transfer Date, if so
specified), Excess Finance Charge Collections with respect to such Distribution
Date, to make the following distributions in the following priority:

               (a) an amount equal to the Required Amount, if any, with respect
        to such Distribution Date shall be distributed first to fund any
        deficiency pursuant to


<PAGE>

                                                                              48

        Section 4.06(a)(i) or (c)(i) (but not including any amount relating to
        any Class A Funding Account Shortfall) and second to pay the Class A
        Investor Default Amount, if any, for such Distribution Date pursuant to
        Section 4.06(a)(ii) or (c)(ii), as the case may be; provided, however,
        that at such time as Citibank (South Dakota) or an Affiliate of Citibank
        (South Dakota) is no longer the Servicer, such Excess Finance Charge
        Collections shall be distributed second to fund any deficiency in the
        Class A Monthly Servicing Fee for such Distribution Date and third to
        pay the Class A Investor Default Amount, if any, for such Distribution
        Date;

               (b) an amount equal to the aggregate amount of Class A Investor
        Charge-Offs which have not been previously reimbursed (after giving
        effect to the allocation on such Distribution Date of any amount for
        that purpose pursuant to Section 4.08(a)(i)) shall be treated as a
        portion of Investor Principal Collections with respect to such
        Distribution Date;

               (c) an amount equal to (i) Class B Monthly Interest due but not
        deposited into the Class B Interest Funding Account on such Distribution
        Date, plus the amount of any Class B Monthly Interest previously due but
        not deposited into the Class B Interest Funding Account on a prior
        Distribution Date, (ii) the Cumulative Excess Interest Amount for such
        Distribution Date and (iii) the amount of any Class B Additional
        Interest due but not deposited into the Class B Interest Funding Account
        on such Distribution Date and any Class B Additional Interest previously
        due but not deposited into the Class B Interest Funding Account on a
        prior Distribution Date, shall be deposited into the Class B Interest
        Funding Account;

               (d) an amount equal to the Class B Investor Default Amount for
        such Distribution Date shall be treated as a portion of Investor
        Principal Collections with respect to such Distribution Date;

               (e) with respect to each Distribution Date following the
        Distribution Date on which the Class A Invested Amount and the Class B
        Invested Amount are


<PAGE>

                                                                              49

        paid in full, provided an Economic Special Payment Date has occurred, an
        amount equal to the CCA Monthly Servicing Fee for such Distribution Date
        shall be distributed to the Servicer (unless such amount has been netted
        against deposits to the Collection Account);

               (f) an amount equal to the aggregate amount by which the Class B
        Invested Amount has been reduced pursuant to clauses (c), (d) and (e) of
        the definition of "Class B Invested Amount" (but not in excess of the
        aggregate amount of such reductions which have not been previously
        reimbursed) shall be treated as a portion of Investor Principal
        Collections with respect to such Distribution Date;

               (g) an amount equal to (i) the "Monthly Cash Collateral Fee" (as
        defined in the Loan Agreement) and (ii) the "Monthly Additional Cash
        Collateral Fee" (as defined in each Additional Loan Agreement) for such
        Distribution Date shall be distributed, pro rata, to the Cash Collateral
        Depositor and each Additional Cash Collateral Depositor, in accordance
        with the provisions of the Loan Agreement and each Additional Loan
        Agreement, respectively;

               (h) an amount equal to the CCA Default Amount for such
        Distribution Date shall be treated as a portion of Investor Principal
        Collections with respect to such Distribution Date;

               (i) an amount equal to the aggregate amount by which the CCA
        Invested Amount has been reduced pursuant to clauses (c), (d) and (e) of
        the definition of "CCA Invested Amount" (but not in excess of the
        aggregate amount of such reductions which have not been previously
        reimbursed) shall be treated as a portion of Investor Principal
        Collections with respect to such Distribution Date;

               (j) with respect to each Distribution Date prior to the
        occurrence of an Economic Amortization Event, an amount equal to the
        lesser of (i) the balance of such Excess Finance Charge Collections and
        (ii) the sum of (A) the excess, if any, of the Initial Cash Collateral


<PAGE>

                                                                              50

        Amount over the amount of funds on deposit in the Cash Collateral
        Account (without giving effect to any deposit made on such date
        hereunder) and (B) the excess, if any, of the Initial Additional Cash
        Collateral Amount for each Additional Cash Collateral Account over the
        amount of funds on deposit in the related Additional Cash Collateral
        Account (without giving effect to any deposit made on such date
        hereunder) shall be deposited, pro rata, into the Cash Collateral
        Account and each Additional Cash Collateral Account on the related
        Transfer Date, for application in accordance with the Loan Agreement and
        each Additional Loan Agreement, respectively; and

               (k) the balance, if any, shall be distributed, pro rata, to the
        Cash Collateral Depositor and each Additional Cash Collateral Depositor
        on the related Transfer Date for application in accordance with the Loan
        Agreement and each Additional Loan Agreement,
        respectively.

               Section 4.10. Subordinated Principal Collections. The Servicer
shall apply (if Citibank (South Dakota) is the Servicer and the Collection
Account is maintained with Citibank (South Dakota)) or shall cause the Trustee
to apply, on each Distribution Date, Subordinated Principal Collections with
respect to such Distribution Date to make the following distributions in the
following priority:

               (a) an amount equal to the excess, if any, of (i) the Required
        Amount, if any, with respect to such Distribution Date over (ii) the sum
        of (x) the amount of Excess Finance Charge Collections with respect to
        such Distribution Date and (y) the Available Shared Enhancement Amount
        with respect to such Distribution Date, shall be distributed by the
        Servicer or the Trustee to fund any deficiency pursuant to Section
        4.06(a)(i) and (a)(ii) or Section 4.06(c)(i) and (c)(ii), as the case
        may be (but not including any amount relating to any Class A Funding
        Account Shortfall), and, if Citibank (South Dakota) or an Affiliate of
        Citibank (South Dakota) is no longer the Servicer, Section 4.06(a)(iii)
        or (c)(iii), as the case may be; provided, however, that in the event
        the Required Amount for such Distribution Date exceeds the


<PAGE>

                                                                              51

        sum of the Available Shared Enhancement Amount for such Distribution
        Date and the amount of Excess Finance Charge Collections and
        Subordinated Principal Collections with respect to such Distribution
        Date, the amount withdrawn from the Cash Collateral Account and each
        Additional Cash Collateral Account with respect to such Required Amount
        and such Excess Finance Charge Collections and Subordinated Principal
        Collections shall be applied first to pay amounts due with respect to
        such Distribution Date pursuant to Section 4.06(a)(i) or (c)(i), as the
        case may be (but not including any amount relating to any Class A
        Funding Account Shortfall), and second to pay the Class A Investor
        Default Amount, if any, for such Distribution Date pursuant to Section
        4.06(a)(ii) or (c)(ii), as the case may be; provided further that at
        such time as Citibank (South Dakota) or an Affiliate of Citibank (South
        Dakota) is no longer the Servicer, the amount withdrawn from the Cash
        Collateral Account and each Additional Cash Collateral Account with
        respect to such Required Amount and such Excess Finance Charge
        Collections and Subordinated Principal Collections shall be applied
        second to fund any deficiency in the Class A Monthly Servicing Fee for
        such Distribution Date and third to pay the Class A Investor Default
        Amount, if any, for such Distribution Date; and

               (b) the balance, if any, shall be treated as a portion of
        Investor Principal Collections with respect to such Distribution Date.

               Section 4.11. Credit Enhancement. (a) The Servicer shall
establish and maintain, in the name of the Trustee, on behalf of the Trust, for
the benefit of the Series 1998-1 Certificateholders and the Cash Collateral
Depositor, as their interests appear herein, a "Sellers Collateral Account" and
a "Bank Collateral Account", each of which shall be one or more Eligible Deposit
Accounts, each bearing a designation clearly indicating that the funds deposited
therein are held for the benefit of the Series 1998-1 Certificateholders and the
Cash Collateral Depositor. The Sellers Collateral Account and the Bank
Collateral Account are collectively referred to as the "Cash Collateral
Account". The Trustee shall possess all right, title and interest in all funds
on deposit from time to time in the


<PAGE>

                                                                              52

Cash Collateral Account and in all proceeds thereof. The Cash Collateral Account
shall be under the sole dominion and control of the Trustee for the benefit of
the Series 1998-1 Certificateholders and the Cash Collateral Depositor. The
interest of the Cash Collateral Depositor in the Cash Collateral Account shall
be subordinated to the interests of the Series 1998-1 Certificateholders as
provided herein and in the Loan Agreement. If at any time any of the accounts
comprising the Cash Collateral Account ceases to be an Eligible Deposit Account,
the Trustee (or the Servicer on its behalf) shall within 10 Business Days (or
such longer period, not to exceed 30 calendar days, as to which each Rating
Agency may consent) establish a new account meeting the conditions specified
above as an Eligible Deposit Account, and shall transfer any cash and/or any
investments to such new account. The Trustee, at the direction of the Servicer,
shall (i) on the Closing Date, deposit in the Cash Collateral Account the
proceeds of the advance to be made on such date by the Cash Collateral Depositor
under the Loan Agreement, (ii) make withdrawals from the Cash Collateral Account
from time to time in an amount up to the Available Cash Collateral Amount at
such time, for the purposes and in the manner set forth in paragraphs (c)
through (i) below, and (iii) on each Distribution Date prior to the termination
of the Cash Collateral Account make a deposit into the Cash Collateral Account
in the amount specified in, and otherwise in accordance with, Section 4.09(j).
All withdrawals from the Cash Collateral Account shall be made in the priority
and in the manner set forth below. The Cash Collateral Depositor shall not be
entitled to reimbursement from the Trust Assets for any withdrawals from the
Cash Collateral Account except as specifically provided in this Series
Supplement.

               (a.1) On each Additional Issuance Date, the Servicer shall
establish and maintain, in the name of the Trustee, on behalf of the Trust, for
the benefit of the Series 1998-1 Certificateholders and the related Additional
Cash Collateral Depositor, as their interests appear in this Series Supplement,
an "Additional Cash Collateral Account" which shall be one or more Eligible
Deposit Accounts, each bearing a designation clearly indicating that the funds
deposited therein are held for the benefit of the Series 1998-1
Certificateholders and the related Additional Cash Collateral Depositor. The
Trustee shall possess all right,


<PAGE>

                                                                              53

title and interest in all funds on deposit from time to time in the Additional
Cash Collateral Account and in all proceeds thereof. The Additional Cash
Collateral Account shall be under the sole dominion and control of the Trustee
for the benefit of the Series 1998-1 Certificateholders and the related
Additional Cash Collateral Depositor. The interest of the Additional Cash
Collateral Depositor in the Additional Cash Collateral Account shall be
subordinated to the interests of the Series 1998-1 Certificateholders as
provided herein and in the related Additional Loan Agreement. If at any time any
of the accounts comprising the Additional Cash Collateral Account ceases to be
an Eligible Deposit Account, the Trustee (or the Servicer on its behalf) shall
within 10 Business Days (or such longer period, not to exceed 30 calendar days,
as to which each Rating Agency may consent) establish a new account meeting the
conditions specified above as an Eligible Deposit Account, and shall transfer
any cash and/or any investments to such new account. The Trustee, at the
direction of the Servicer, shall (i) on the Additional Issuance Date, deposit in
the Additional Cash Collateral Account the proceeds of the advance to be made on
such date by the Additional Cash Collateral Depositor under the Additional Loan
Agreement, (ii) make withdrawals from the Additional Cash Collateral Account
from time to time in an amount up to the Available Additional Cash Collateral
Amount at such time, for the purposes and in the manner set forth in paragraphs
(c) through (i) below, and (iii) on each Distribution Date prior to the
termination of the Additional Cash Collateral Account make a deposit into the
Additional Cash Collateral Account in the amount specified in, and otherwise in
accordance with, Section 4.09(j). All withdrawals from the Additional Cash
Collateral Account shall be made in the priority and in the manner set forth
below. The Additional Cash Collateral Depositor shall not be entitled to
reimbursement from the Trust Assets for any withdrawals from the Additional Cash
Collateral Account except as specifically provided in this Series Supplement.

               (b) Funds on deposit in the Cash Collateral Account shall be
invested at the direction of the Servicer (or the Cash Collateral Depositor, as
provided in the Loan Agreement) by the Trustee in Cash Collateral Account
Investments. Funds on deposit in the Cash Collateral Account on any Transfer
Date, after giving effect to any


<PAGE>

                                                                              54

withdrawals from the Cash Collateral Account on such Transfer Date, shall be
invested in such investments that will mature so that such funds will be
available for withdrawal on or prior to the following Transfer Date. The
proceeds of any such investments shall be invested in such investments that will
mature so that such funds will be available for withdrawal on or prior to the
Transfer Date immediately following the date of such investment. The Trustee
shall maintain for the benefit of the Series 1998-1 Certificateholders and the
Cash Collateral Depositor possession of the negotiable instruments or
securities, if any, evidencing the Cash Collateral Account Investments. On each
Transfer Date, all interest and earnings (net of losses and investment expenses)
accrued since the preceding Transfer Date on funds on deposit in the Cash
Collateral Account shall be paid to the Cash Collateral Depositor for
application in accordance with the Loan Agreement. For purposes of determining
the availability of funds or the balances in the Cash Collateral Account for any
reason under this Series Supplement, all investment earnings on such funds shall
be deemed not to be available or on deposit.

               (b.1) Funds on deposit in each Additional Cash Collateral Account
shall be invested at the direction of the Servicer (or the related Additional
Cash Collateral Depositor, as provided in the related Additional Loan Agreement)
by the Trustee in Cash Collateral Account Investments. Funds on deposit in each
Additional Cash Collateral Account on any Transfer Date, after giving effect to
any withdrawals from such Additional Cash Collateral Account on such Transfer
Date, shall be invested in such investments that will mature so that such funds
will be available for withdrawal on or prior to the following Transfer Date. The
proceeds of any such investments shall be invested in such investments that will
mature so that such funds will be available for withdrawal on or prior to the
Transfer Date immediately following the date of such investment. The Trustee
shall maintain for the benefit of the Series 1998-1 Certificateholders and each
Additional Cash Collateral Depositor possession of the negotiable instruments or
securities, if any, evidencing the Cash Collateral Account Investments in the
related Additional Cash Collateral Account. On each Transfer Date, all interest
and earnings (net of losses and investment expenses) accrued since the preceding
Transfer Date on funds


<PAGE>

                                                                              55

on deposit in each Additional Cash Collateral Account shall be paid to the
related Additional Cash Collateral Depositor for application in accordance with
the related Additional Loan Agreement. For purposes of determining the
availability of funds or the balances in each Additional Cash Collateral Account
for any reason under this Series Supplement, all investment earnings on such
funds shall be deemed not to be available or on deposit.

               (c) On each Determination Date, the Servicer shall calculate the
amount (the "Required Draw Amount") (determined after giving effect to any
distribution to be made pursuant to Section 4.06(a)(i) or (c)(i), as the case
may be, and Section 4.06(a)(ii) or (c)(ii), as the case may be, on the related
Distribution Date) equal to the excess, if any, of (i) the Required Amount, if
any, with respect to such Distribution Date over (ii) the amount of Excess
Finance Charge Collections to be allocated and available pursuant to Section
4.09(a) to fund such Required Amount on such Distribution Date.

               (d) On each Determination Date, the Servicer shall calculate the
amount (the "Interest Draw Amount") (determined after giving effect to any
distribution to be made pursuant to Section 4.06(b)(i) or (d)(i), as the case
may be, and Section 4.09(c) on the related Distribution Date) of (i) any Class B
Monthly Interest due but not to be deposited into the Class B Interest Funding
Account on such Distribution Date pursuant to Section 4.06(b)(i) or (d)(i), as
the case may be, or Section 4.09(c), (ii) any Class B Monthly Interest
previously due but not deposited into the Class B Interest Funding Account on a
prior Distribution Date pursuant to Section 4.06(b)(i) or (d)(i), as the case
may be, or Section 4.09(c) or this paragraph (d), (iii) any Class B Additional
Interest due but not to be deposited into the Class B Interest Funding Account
on such Distribution Date and any Class B Additional Interest previously due but
not deposited into the Class B Interest Funding Account on a prior Distribution
Date pursuant to Section 4.06(b)(i) or (d)(i), as the case may be, or Section
4.09(c) or this paragraph (d) and (iv) any Cumulative Excess Interest Amount due
but not to be deposited into the Class B Interest Funding Account on such
Distribution Date pursuant to Section 4.09(c).


<PAGE>

                                                                              56

               (e) On each Determination Date, the Servicer shall calculate the
amount (the "Default Draw Amount") equal to the excess, if any, of (i) the Class
B Investor Default Amount for the related Distribution Date over (ii) the amount
of Excess Finance Charge Collections to be allocated and available pursuant to
Section 4.09(d) to fund such Class B Investor Default Amount on such
Distribution Date.

               (f) On each Determination Date (commencing with the Determination
Date preceding the Class B Principal Commencement Date), the Servicer shall
calculate the amount (the "Reimbursement Draw Amount") equal to the excess, if
any, of (i) the Class B Initial Invested Amount minus the sum of the aggregate
amount of principal payments previously distributed to Class B
Certificateholders over (ii) the Class B Invested Amount on the last day of the
related Due Period (determined after giving effect to any change to be made in
the Class B Invested Amount pursuant to paragraph (c), (d), (e) or (f) of the
definition of "Class B Invested Amount" on the following Distribution Date).

               (g) Notwithstanding Section 4.11(f), if either (i) the
Certificateholders' Interest in the Receivables is reassigned to the Sellers
pursuant to Section 2.06 of the Agreement, (ii) Receivables are sold, disposed
of or otherwise liquidated pursuant to Section 9.02 or Section 12.02(c) of the
Agreement or (iii) the Certificateholders' Interest in the Receivables is
purchased by the Sellers pursuant to Section 10.01 of the Agreement or the
Series 1998-1 Certificateholders' Interest is purchased by the Sellers pursuant
to Section 7.01 of this Series Supplement, the Servicer shall not calculate the
Reimbursement Draw Amount with respect to the relevant Distribution Date, but
shall calculate the amount (the "Special Draw Amount") equal to the aggregate
amount of all reductions of the Class B Invested Amount occurring under clauses
(c), (d) or (e) of the definition of "Class B Invested Amount" which have not
been reimbursed prior to such Distribution Date under clause (f) thereof.

               (h) Notwithstanding Section 4.11(f) and (g), on the Determination
Date preceding the Economic Special Payment Date, the Servicer shall not
calculate the Reimbursement Draw Amount or the Special Draw Amount with respect
to such Special Payment Date, but shall calculate


<PAGE>

                                                                              57

(i) the amount (the "Class A Principal Draw Amount") (determined after giving
effect to any distribution to be made pursuant to Section 4.06(f)(i) and
4.07(a)(ii) on such Special Payment Date) equal to the outstanding principal
amount of the Class A Certificates and (ii) the amount (the "Class B Principal
Draw Amount") (determined after giving effect to any distribution to be made
pursuant to Section 4.06(f)(iii) and 4.07(b)(ii) on such Special Payment Date)
equal to the outstanding principal amount of the Class B Certificates.

               (i) In the event that for any Distribution Date, the sum of any
Required Draw Amount, Interest Draw Amount, Default Draw Amount, Reimbursement
Draw Amount, Special Draw Amount, Class A Principal Draw Amount and Class B
Principal Draw Amount (such sum being referred to as the "Total Draw Amount"),
is greater than zero, the Servicer shall give written notice to the Trustee, the
Cash Collateral Depositor and each Additional Cash Collateral Depositor, in
substantially the form of Exhibits B-1 and B-2, respectively, of such positive
Total Draw Amount on the related Determination Date. On the related Transfer
Date, withdrawals will be made from the Cash Collateral Account and each
Additional Cash Collateral Account as follows:

               (A) the portion of the Total Draw Amount allocable to the
        Required Draw Amount, if any, up to the Available Shared Enhancement
        Amount, shall be withdrawn, pro rata, from the Cash Collateral Account
        and each Additional Cash Collateral Account, in each case, on the
        related Transfer Date and distributed first to fund any deficiency
        pursuant to Section 4.06(a)(i) or (c)(i) (but not including any amount
        relating to any Class A Funding Account Shortfall) and second to pay the
        Class A Investor Default Amount, if any, for such Distribution Date
        pursuant to Section 4.06(a)(ii) or (c)(ii), as the case may be;
        provided, however, that at such time as Citibank (South Dakota) or an
        Affiliate of Citibank (South Dakota) is no longer the Servicer, the
        amount of such withdrawal from the Cash Collateral Account and each
        Additional Cash Collateral Account shall be applied in accordance with
        Section 4.10(a) second to fund any deficiency in the Class A Monthly
        Servicing Fee for such Distribution


<PAGE>

                                                                              58

        Date and third to pay the Class A Investor Default Amount, if any, for
such Distribution Date;

               (B) the portion of the Total Draw Amount allocable to the
        Interest Draw Amount, if any, up to the Available Shared Enhancement
        Amount (determined after giving effect to any withdrawal pursuant to
        clause (A)), shall be withdrawn, pro rata, from the Cash Collateral
        Account and each Additional Cash Collateral Account, in each case, on
        the related Transfer Date and immediately deposited by the Trustee into
        the Class B Interest Funding Account;

               (C) the portion of the Total Draw Amount allocable to the Default
        Draw Amount, if any, up to the Available Shared Enhancement Amount
        (determined after giving effect to any withdrawal pursuant to clauses
        (A) and (B)), shall be withdrawn, pro rata, from the Cash Collateral
        Account and each Additional Cash Collateral Account, in each case, on
        the related Transfer Date and used to pay the Class B Investor Default
        Amount for such Distribution Date pursuant to Section 4.09(d);

               (D) the portion of the Total Draw Amount allocable to the Class A
        Principal Draw Amount, if any, up to the Available Shared Enhancement
        Amount (determined after giving effect to any withdrawal pursuant to
        clauses (A), (B) and (C)), shall be withdrawn, pro rata, from the Cash
        Collateral Account and each Additional Cash Collateral Account, in each
        case, on the related Transfer Date and immediately deposited by the
        Trustee into the Class A Principal Funding Account; and

               (E) the remainder of the Total Draw Amount, if any, up to the
        Available Enhancement Amount (determined after giving effect to any
        withdrawal pursuant to clauses (A) through (D)), shall be withdrawn, pro
        rata, from the Cash Collateral Account and each Additional Cash
        Collateral Account, in each case, on the related Transfer Date and
        immediately deposited by the Trustee into the Collection Account for
        distribution to the Class B Certificateholders on such Distribution
        Date.

Notwithstanding anything to the contrary in this Series Supplement or in the
Agreement, no withdrawal may be made


<PAGE>

                                                                              59

from the Cash Collateral Account or any Additional Cash Collateral Account to
fund any Class A Funding Account Shortfall. For the avoidance of doubt, after
any Additional Issuance Date, no withdrawal shall be made from the Cash
Collateral Account or any Additional Cash Collateral Account on any basis other
than pro rata and no withdrawal shall be made from the Cash Collateral Account
or any Additional Cash Collateral Account to fund any amount which is required
to be withdrawn pursuant to this Series Supplement from any other cash
collateral account.

               (j) Upon the earliest to occur of (i) the termination of the
Trust pursuant to Article XII of the Agreement, (ii) the Termination Date, (iii)
the day on which the Class A Invested Amount and the Class B Invested Amount are
paid in full to the Class A Certificateholders and the Class B
Certificateholders and (iv) all withdrawals from the Cash Collateral Account and
each Additional Cash Collateral Account pursuant to Section 4.11(i) with respect
to the Economic Special Payment Date having been made, the Trustee, acting in
accordance with the instructions of the Servicer, after the prior payment of all
amounts owing to the Class A Certificateholders and the Class B
Certificateholders which are payable from the Cash Collateral Account and each
Additional Cash Collateral Account as provided herein, shall withdraw from the
Cash Collateral Account and each Additional Cash Collateral Account, for
application in accordance with the Loan Agreement and the related Additional
Loan Agreements, respectively all amounts, if any, on deposit in the Cash
Collateral Account and each Additional Cash Collateral Account and the Cash
Collateral Account and each Additional Cash Collateral Account shall be deemed
to have terminated for purposes of this Series Supplement.

               Section 4.12. Reallocated Investor Finance Charge Collections.
(a) That portion of Group One Investor Finance Charge Collections for any
Distribution Date equal to the amount of Reallocated Investor Finance Charge
Collections for such Distribution Date will be allocated to Series 1998-1 and
will be distributed as set forth in this Series Supplement.

               (b)  Reallocated Investor Finance Charge Collections, with
respect to any Distribution Date, shall


<PAGE>

                                                                              60

equal the sum of (i) the aggregate amount of Series 1998-1 Monthly Interest,
Series 1998-1 Default Amount, Series 1998- 1 Monthly Fees and Series 1998-1
Additional Amounts for such Distribution Date and (ii) that portion of excess
Group One Investor Finance Charge Collections to be included in Reallocated
Investor Finance Charge Collections pursuant to Section 4.12(c); provided,
however, that if the amount of Group One Investor Finance Charge Collections for
such Distribution Date is less than the sum of (w) Group One Investor Monthly
Interest, (x) Group One Investor Default Amount, (y) Group One Investor Monthly
Fees and (z) Group One Investor Additional Amounts, then Reallocated Investor
Finance Charge Collections shall equal the sum of the following amounts for such
Distribution Date:

               (A) the product of (I) Group One Investor Finance Charge
        Collections (up to the amount of Group One Investor Monthly Interest)
        and (II) a fraction, the numerator of which is Series 1998-1 Monthly
        Interest and the denominator of which is Group One Investor Monthly
        Interest;

               (B) the product of (I) Group One Investor Finance Charge
        Collections less the amount of Group One Investor Monthly Interest (up
        to the Group One Investor Default Amount) and (II) a fraction, the
        numerator of which is the Series 1998-1 Default Amount and the
        denominator of which is the Group One Investor Default Amount;

               (C) the product of (I) Group One Investor Finance Charge
        Collections less the amount of Group One Investor Monthly Interest and
        the Group One Investor Default Amount (up to Group One Investor Monthly
        Fees) and (II) a fraction, the numerator of which is Series 1998-1
        Monthly Fees and the denominator of which is Group One Investor Monthly
        Fees; and

               (D) the product of (I) Group One Investor Finance Charge
        Collections less the sum of (i) Group One Investor Monthly Interest,
        (ii) the Group One Investor Default Amount and (iii) Group One Investor
        Monthly Fees and (II) a fraction, the numerator of which is Series
        1998-1 Additional Amounts and the denominator of which is Group One
        Investor Additional Amounts.


<PAGE>

                                                                              61


               (c) If the amount of Group One Investor Finance Charge
Collections for such Distribution Date exceeds the sum of (i) Group One Investor
Monthly Interest, (ii) Group One Investor Default Amount, (iii) Group One
Investor Monthly Fees and (iv) Group One Investor Additional Amounts, then
Reallocated Investor Finance Charge Collections for such Distribution Date shall
include an amount equal to the product of (x) the amount of such excess and (y)
a fraction, the numerator of which is the Invested Amount as of the last day of
the second preceding Due Period and the denominator of which is the sum of such
Invested Amount and the aggregate invested amounts for all other Series included
in Group One as of such last day.

               Section 4.13. Excess Principal Collections. (a) That portion of
Excess Principal Collections for any Distribution Date equal to the amount of
Series 1998-1 Excess Principal Collections for such Distribution Date will be
allocated to Series 1998-1 and will be distributed as set forth in this Series
Supplement.

               (b) Series 1998-1 Excess Principal Collections, for any
Distribution Date with respect to the Accumulation Period or the Early
Amortization Period, shall mean an amount equal to the Series 1998-1 Principal
Shortfall for such Distribution Date; provided, however, that if the aggregate
amount of Excess Principal Collections for all Series for such Distribution Date
is less than the aggregate amount of Principal Shortfalls for all Series for
such Distribution Date, then Series 1998-1 Excess Principal Collections for such
Distribution Date shall equal the product of (x) Excess Principal Collections
for all Series for such Distribution Date and (y) a fraction, the numerator of
which is the Series 1998-1 Principal Shortfall for such Distribution Date and
the denominator of which is the aggregate amount of Principal Shortfalls for all
Series for such Distribution Date. The Series 1998-1 Principal Shortfall for any
Distribution Date shall equal the excess of (i) (x) for any Distribution Date
with respect to the Accumulation Period, (A) the Controlled Distribution Amount
and (B) if such Distribution Date is also the Class B Expected Final Payment
Date, the Class B Invested Amount, or (y) for any Distribution Date with respect
to the Early Amortization Period, the sum of the Invested Amount and the CCA
Invested Amount, if any, over (ii) Available Investor


<PAGE>

                                                                              62

Principal Collections for such Distribution Date (excluding any portion thereof
attributable to Series 1998-1 Excess Principal Collections).


                                    ARTICLE V

                          Distributions and Reports to
                        Series 1998-1 Certificateholders

               Section 5.01. Distributions. (a) On each Payment Date, the Paying
Agent shall distribute to each Class A Certificateholder of record on the
related Record Date (other than as provided in Section 12.02 of the Agreement)
such Investor Certificateholder's pro rata share of the amounts on deposit in
the Class A Interest Funding Account.

               (b) On each Special Payment Date and on the Class A Expected
Final Payment Date, the Paying Agent shall distribute to each Class A
Certificateholder of record on the related Record Date (other than as provided
in Section 12.02 of the Agreement) such Investor Certificateholder's pro rata
share of the amounts on deposit in the Class A Principal Funding Account that
are payable to the Class A Certificateholders pursuant to Section 4.07(a)(ii).

               (c) On each Payment Date, the Paying Agent shall distribute to
each Class B Certificateholder of record on the related Record Date (other than
as provided in Section 12.02 of the Agreement) such Investor Certificateholder's
pro rata share of the amounts on deposit in the Class B Interest Funding
Account.

               (d) On each Special Payment Date and on the Class B Expected
Final Payment Date, the Paying Agent shall distribute to each Class B
Certificateholder of record on the related Record Date (other than as provided
in Section 12.02 of the Agreement) such Investor Certificateholder's pro rata
share of the amounts on deposit in the Collection Account that are payable to
Class B Certificateholders pursuant to Section 4.07(b)(ii).

               (e) Except as provided in Section 12.02 of the Agreement with
respect to a final distribution,


<PAGE>

                                                                              63

distributions to Series 1998-1 Certificateholders hereunder shall be made by
check mailed to each Series 1998-1 Certificateholder at such Certificateholder's
address appearing in the Certificate Register without presentation or surrender
of any Series 1998-1 Certificate or the making of any notation thereon;
provided, however, that with respect to Series 1998-1 Certificates registered in
the name of a Clearing Agency, such distributions shall be made to such Clearing
Agency in immediately available funds.

               Section 5.02. Reports and Statements to Series 1998-1
Certificateholders. (a) On each Distribution Date, the Paying Agent, on behalf
of the Trustee, shall forward to each Series 1998-1 Certificateholder a
statement substantially in the form of Exhibit C prepared by the Servicer. If
and so long as the Series 1998-1 Certificates are listed on the Luxembourg Stock
Exchange and the rules of such exchange shall so require, within two Business
Days following each Payment Date, the Servicer shall publish or cause to be
published in an Authorized Newspaper of general circulation in Luxembourg a
notice to the effect that the information set forth in the statement forwarded
by the Paying Agent to Series 1998-1 Certificateholders with respect to such
Payment Date will be available for review at the Luxembourg Stock Exchange and
at the main office of the listing agent in Luxembourg, Banque Internationale A
Luxembourg S.A.

               (b) Not later than the fourth Business Day preceding each
Distribution Date, the Servicer shall deliver to the Trustee, the Paying Agent,
each Rating Agency and the Cash Collateral Depositor and each Additional Cash
Collateral Depositor (i) a statement substantially in the form of Exhibit C
prepared by the Servicer and (ii) a certificate of a Servicing Officer
substantially in the form of Exhibit D.

               (c) A copy of each statement or certificate provided pursuant to
paragraph (a) or (b) may be obtained by any Series 1998-1 Certificateholder or
Certificate Owner by
a request in writing to the Servicer.

               (d) On or before January 31 of each calendar year, beginning with
calendar year 1999, the Paying Agent, on behalf of the Trustee, shall furnish or
cause to be


<PAGE>

                                                                              64

furnished to each Person who at any time during the preceding calendar year was
a Series 1998-1 Certificateholder, a statement prepared by the Servicer
containing the information which is required to be contained in the statement to
Series 1998-1 Certificateholders, as set forth in paragraph (a) above,
aggregated for such calendar year or the applicable portion thereof during which
such Person was a Series 1998-1 Certificateholder, together with other
information as is required to be provided by an issuer of indebtedness under the
Internal Revenue Code and such other customary information as is necessary to
enable the Series 1998-1 Certificateholders to prepare their tax returns. Such
obligation of the Servicer shall be deemed to have been satisfied to the extent
that substantially comparable information shall be provided by the Paying Agent
pursuant to any requirements of the Internal Revenue Code as from time to time
in effect.


                                   ARTICLE VI

                               Amortization Events

               Section 6.01. Additional Amortization Events. The occurrence of
any of the following events shall, immediately upon the occurrence thereof
without notice or other action on the part of the Trustee or the Series 1998-1
Certificateholders, be deemed to be an Amortization Event solely with respect to
Series 1998-1:

               (a) on any Determination Date, the Class B Invested Amount on the
        related Distribution Date will be reduced to less than 1% of the Initial
        Invested Amount;

               (b) on the last day of any Due Period during the Accumulation
        Period the product of (i) the total amount of Principal Receivables as
        of such last day, (ii) the Series 1998-1 Allocation Percentage
        (expressed as a decimal) for such Due Period and (iii) the excess
        (expressed as a decimal) of 100% over the Floating Allocation Percentage
        for such Due Period, shall fail to equal at least 100% of the Class A
        Principal Funding Account Balance on such day;


<PAGE>

                                                                              65

               (c) the Portfolio Yield for any Due Period during the
        Accumulation Period shall be less than the weighted average of the
        Certificate Rates for all outstanding Series included in Group One as of
        the last day of such Due Period;

               (d) the Class A Invested Amount shall not be paid in full on the
        Class A Expected Final Payment Date or the Class B Invested Amount shall
        not be paid in full on the Class B Expected Final Payment Date;

               (e) the amount of Surplus Finance Charge Collections averaged
        over any three consecutive Due Periods shall not be equal to or in
        excess of the Required Surplus Finance Charge Amount for the last of
        such three consecutive Due Periods.


                                   ARTICLE VII

                   Optional Repurchase; Additional Issuances;
                               Accumulation Period

               Section 7.01. Optional Repurchase. (a) On the Distribution Date
occurring on or after the date on which the Invested Amount is reduced to 5% of
the Initial Invested Amount or less, the Sellers shall have the option to
purchase the Series 1998-1 Certificateholders' Interest, at a purchase price
equal to the Reassignment Amount for such Distribution Date.

               (b) The Sellers shall give the Servicer and the Trustee at least
30 days prior written notice of the date on which the Sellers intend to exercise
such purchase option. Not later than 12:00 noon, New York City time, on such
Distribution Date the Sellers shall deposit the Reassignment Amount into the
Collection Account in immediately available funds. Such purchase option is
subject to payment in full of the Reassignment Amount. The Reassignment Amount
shall be distributed as set forth in Section 8.01(b).

               (c) If the Loan Agreement or any Additional Loan Agreement so
provides, in the event the Sellers exercise such purchase option,
notwithstanding anything to the contrary contained in the Agreement or in this
Series


<PAGE>

                                                                              66

Supplement, the Series 1998-1 Certificates shall be deemed to remain outstanding
as if such purchase option were not exercised and the terms of the Agreement and
this Series Supplement (other than Section 4.11(c) through (i) of this Series
Supplement and Section 12.02(c) of the Agreement) shall otherwise remain in
effect until the earlier of (i) one year and one day following the Termination
Date, (ii) the date on which the Trust terminates and (iii) the date on which
the Class A Invested Amount, the Class B Invested Amount and the CCA Invested
Amount, if any, would have been paid in full had such purchase option not been
exercised; provided that distributions which would otherwise have been made to
the Series 1998-1 Certificateholders shall be made to the Sellers.

               Section 7.02. Additional Issuances of Series 1998-1 Certificates.
(a) Subject to Sections 7.02(b) and (c) of this Series Supplement, the Banks may
at any time, or from time to time, during the Revolving Period direct the
Trustee, on behalf of the Trust, to authenticate additional Class A Certificates
(the "Additional Class A Certificates") and additional Class B Certificates (the
"Additional Class B Certificates") on the first day of any Due Period (each such
day, an "Additional Issuance Date"). Any such issuance of Additional Investor
Certificates is referred to herein as an "Additional Issuance". The outstanding
Investor Certificates of each class and the Additional Investor Certificates of
that class shall be equally and ratably entitled as provided herein to the
benefits of the Agreement and this Series Supplement without preference,
priority or distinction, all in accordance with the terms and provisions of the
Agreement and this Series Supplement.

               (b) The obligation of the Trustee to authenticate Additional
Investor Certificates is subject to the satisfaction of the following
conditions:

               (i) on or before the fifth Business Day immediately preceding the
        Additional Issuance Date, the Sellers shall have given the Trustee, the
        Servicer, each Rating Agency and the Cash Collateral Depositor written
        notice of such Additional Issuance and the
        Additional Issuance Date;


<PAGE>

                                                                              67


               (ii) the Sellers shall have delivered to the Trustee an amended
        Series Supplement, in form satisfactory to the Trustee, executed by each
        party hereto other than the Trustee;

               (iii) after giving effect to the Additional Issuance, the total
        amount of Principal Receivables shall be equal to, or greater than, the
        Required Minimum Principal Balance;

               (iv) either (A) the Sellers, the Trustee and the Cash Collateral
        Depositor shall have entered into an amendment to the Loan Agreement or
        (B) the Sellers, the Trustee and the additional Series Enhancer shall
        have entered into an additional series enhancement agreement;

               (v) the Sellers shall have delivered to the Trustee, each Rating
        Agency and the Cash Collateral Depositor a Tax Opinion dated the
        Additional Issuance Date, with respect to such Additional Issuance;

               (vi) the Sellers shall have delivered to each Rating Agency (i)
        Opinion(s) of Counsel with respect to the enforceability of the
        Additional Loan Agreement, (ii) an Opinion of Counsel to the effect that
        such Additional Issuance will not violate applicable Federal securities
        laws and (iii) such other documents as the Rating Agencies may request;

               (vii) the Rating Agency Condition shall have been satisfied with
        respect to such Additional Issuance;

               (viii) such Additional Issuance shall not have an Adverse Effect
        and is not reasonably expected to have an Adverse Effect at any time in
        the future;

               (ix) as of the Additional Issuance Date all amounts due and owing
        to the Series 1998-1 Certificateholders on or prior to such date shall
        have been paid to such Certificateholders and there shall not be any
        unreimbursed Investor Charge-Offs;

               (x) the excess of the principal amount of the Additional Investor
        Certificates over the issue price


<PAGE>

                                                                              68

        of the Additional Investor Certificates shall not exceed the maximum
        amount permitted under the Internal Revenue Code without the creation of
        original issue discount (assuming that there is no original issue
        discount on the Additional Investor Certificates for any other reason);

               (xi) the Banks' Interest shall not be less than 2% of the total
        amount of Principal Receivables, in each case as of the Additional
        Issuance Date, after giving effect to such Additional Issuance;

               (xii) the ratio of the Controlled Amortization Amount (after
        giving effect to such Additional Issuance) to the Invested Amount (after
        giving effect to such Additional Issuance) shall be equal to the ratio
        of the Controlled Amortization Amount (before giving effect to such
        Additional Issuance) to the Invested Amount (before giving effect to
        such Additional Issuance);

               (xiii) the Sellers shall cause additional credit enhancement to
        be provided by the Cash Collateral Depositor or any additional Series
        Enhancer for the exclusive benefit of the Investor Certificateholders;
        provided that the ratio of the Available Enhancement Amount (after
        giving effect to such increase) to the Invested Amount (after giving
        effect to such Additional Issuance) shall be greater than or equal to
        the ratio of the Available Enhancement Amount (before giving effect to
        such increase) to the Invested Amount (before giving effect to such
        Additional Issuance);

               (xiv) the ratio of the sum of the increase in the Class A
        Investment Fees (as a result of such Additional Issuance) to the
        increase in the Invested Amount (as a result of such Additional
        Issuance) shall be less than or equal to 150% of the ratio of the sum of
        the Class A Investment Fees (as of the Closing Date) to the Invested
        Amount (as of the Closing Date); and

               (xv) the Sellers shall have delivered to the Trustee an Officer's
        Certificate, dated the Additional Issuance Date, confirming that the
        conditions referred to above have been satisfied.


<PAGE>

                                                                              69

Upon satisfaction of the above conditions, the Trustee shall authenticate the
Additional Investor Certificates upon execution thereof by the Sellers.

               (c) Notwithstanding any provision of the Agreement or this Series
Supplement, this Series Supplement may be amended by the Servicer, the Sellers
and the Trustee, without the consent of any of the Certificateholders, to
provide for an Additional Issuance, provided that the conditions set forth in
Section 7.02(b) have been satisfied.

               (d) Notwithstanding any provision of this Series Supplement, the
Sellers may cause additional Series Enhancement to be provided for the benefit
of the Investor Certificateholders in lieu of (or in addition to) an Additional
Cash Collateral Account provided in connection with an Additional Issuance;
provided that the conditions set forth in Section 7.02(b) will be satisfied.

               Section 7.03. Accumulation Period Postponement. The Accumulation
Period is scheduled to commence at the close of business on the fourth-to-last
Business Day of December 1999; provided, however, that if the Accumulation
Period Length (determined as described below) is less than twelve months, upon
notice to the Trustee, the Sellers, the Rating Agency and the Cash Collateral
Depositor, the Servicer, at its option, may elect to postpone the date on which
the Accumulation Period actually commences to the fourth-to-last Business Day of
any month that precedes the month that is the number of months prior to the
Class A Expected Final Payment Date, equal to the Accumulation Period Length
such that the number of Monthly Periods in the Accumulation Period will equal or
exceed the Accumulation Period Length. On the Determination Date immediately
preceding the December 1999 Distribution Date, the Servicer will determine the
"Accumulation Period Length" which will equal the number of months such that the
sum of the Accumulation Period Amounts for each Monthly Period, beginning with
(and assigning the largest Accumulation Period Amount to) the Monthly Period
that ends on the day preceding the Class A Expected Final Payment Date, when
aggregated with the Accumulation Period Amounts for each preceding Monthly
Period will equal or exceed the Initial Invested Amount. If the Servicer elects
to postpone the commencement of the Accumulation Period pursuant to this


<PAGE>

                                                                              70

Section 7.03, then on each Determination Date thereafter until the date the
Accumulation Period commences, the Servicer will recalculate the Accumulation
Period Length; provided, however, that (i) the length of the Accumulation Period
shall not be shorter than the period determined as of the first date of
determination unless an additional Series, other than an Excluded Series, shall
have been issued since such date and such Series is in its revolving period;
(ii) the length of the Accumulation Period will not be less than one month; and
(iii) no election to postpone, or further postpone, the commencement of the
Accumulation Period shall be made after an economic amortization event (as
defined in the related Supplement) shall have occurred and is continuing with
respect to any other Series. If the Accumulation Period Length as recalculated
on any such Determination Date exceeds the number of Monthly Periods then
scheduled to be included in the Accumulation Period, the commencement date of
the Accumulation Period will be changed to the later of (x) such Determination
Date and (y) the fourth-to-last Business Day of a month such that the number of
Monthly Periods in the Accumulation Period will equal the recalculated
Accumulation Period Length. Any notice by the Servicer electing to postpone (or
further postpone) the commencement of the Accumulation Period pursuant to this
Section 7.03 shall specify (i) the Accumulation Period Length, (ii) the
commencement date of the Accumulation Period and (iii) the Controlled
Amortization Amount with respect to each Monthly Period.


                                  ARTICLE VIII

                               Final Distributions

               Section 8.01. Sale of Certificateholders' Interest Pursuant to
Section 2.06 or 10.01 of the Agreement. (a) Purchase Price. (i) The amount to be
paid by the Sellers with respect to Series 1998-1 in connection with a
repurchase of the Certificateholders' Interest pursuant to Section 2.06 of the
Agreement shall equal the Reassignment Amount for the first Distribution Date
following the Due Period in which the reassignment obligation arises under the
Agreement.


<PAGE>

                                                                              71

               (ii) The amount to be paid by the Sellers with respect to Series
1998-1 in connection with a repurchase of the Certificateholders' Interest
pursuant to Section 10.01 of the Agreement shall equal the sum of (x) the
Reassignment Amount for the Distribution Date of such repurchase and (y) the sum
of (A) the excess, if any, of (I) a price equivalent to the average of bids
quoted on the Record Date preceding the date of repurchase or, if not a Business
Day, on the next succeeding Business Day by at least two recognized dealers
selected by the Trustee (which may be selected from the list attached as
Schedule 1), for the purchase by such dealers of a security which is similar to
the Class A Certificates with a remaining maturity approximately equal to the
remaining maturity of the Class A Certificates and rated by each Rating Agency
in the rating category originally assigned to the Class A Certificates over (II)
the portion of the Reassignment Amount attributable to the Class A Certificates
and (B) the excess, if any, of (I) a price equivalent to the average of bids
quoted on such Record Date or, if not a Business Day, on the next succeeding
Business Day by at least two recognized dealers selected by the Trustee (which
may be selected from the list attached as Schedule 1), for the purchase by such
dealers of a security which is similar to the Class B Certificates with a
remaining maturity approximately equal to the remaining maturity of the Class B
Certificates and rated by each Rating Agency in the rating category originally
assigned to the Class B Certificates over (II) the portion of the Reassignment
Amount attributable to the Class B Certificates.

               (b) Distributions Pursuant to Section 7.01 of this Series
Supplement and Sections 2.06, 10.01 or 12.02(c) of the Agreement. With respect
to the Reassignment Amount deposited into the Collection Account pursuant to
Section 7.01 or 8.01 or any Termination Proceeds from the sale of Receivables
(or interests therein) allocable to the Series 1998-1 Certificateholders'
Interest deposited into the Collection Account pursuant to Section 12.02(c) of
the Agreement, the Trustee shall, not later than 12:00 noon, New York City time,
on the date of deposit, make deposits or distributions of the following amounts
(in the priority set forth below and, in each case, after giving effect to any
deposits and distributions otherwise to be made on such date) in immediately
available funds: (i)(x) the Class A


<PAGE>

                                                                              72

Invested Amount on such date will be deposited into the Class A Principal
Funding Account and (y) the amount of accrued and unpaid interest on the unpaid
balance of the Class A Certificates, plus the amount of Class A Additional
Interest, if any, for such Distribution Date and any Class A Additional Interest
previously due but not deposited into the Class A Interest Funding Account on
any prior Distribution Date, will be deposited into the Class A Interest Funding
Account, (ii)(x) the Class B Invested Amount on such date will be retained in
the Collection Account for distribution to the Class B Certificateholders and
(y) the amount of accrued and unpaid interest on the unpaid balance of the Class
B Certificates, plus the amount of Class B Additional Interest, if any, for such
Distribution Date and any Class B Additional Interest previously due but not
deposited into the Class B Interest Funding Account on a prior Distribution
Date, will be deposited into the Class B Interest Funding Account, and (iii) the
CCA Invested Amount, if any, on such date will be distributed, pro rata, to the
Cash Collateral Depositor and each Additional Cash Collateral Depositor, for
application in accordance with the Loan Agreement and each Additional Loan
Agreement, respectively. Notwithstanding anything to the contrary contained in
this Series Supplement or the Agreement, the amount of any excess determined
pursuant to paragraph (a)(ii)(y)(A) shall be distributed to the Class A
Certificateholders and the amount of any excess determined pursuant to paragraph
(a)(ii)(y)(B) shall be distributed to the Class B Certificateholders. The
remainder of any Termination Proceeds shall be distributed, pro rata, to the
Cash Collateral Depositor and each Additional Cash Collateral Depositor for
application in accordance with the Loan Agreement and each Additional Loan
Agreement, respectively.

               (c) Notwithstanding anything to the contrary in this Series
Supplement or the Agreement, the entire amount deposited in the Class A
Principal Funding Account and the Interest Funding Accounts and the amount
retained in the Collection Account for distribution to the Class B
Certificateholders pursuant to Section 7.01 or 8.01 and all other amounts on
deposit therein for distribution to the Series 1998-1 Certificateholders shall
be distributed in full to the Series 1998-1 Certificateholders on such date


<PAGE>

                                                                              73

and shall be deemed to be a final distribution pursuant to Section 12.02 of the
Agreement.

               Section 8.02. Distribution of Proceeds of Sale, Disposition or
Liquidation of the Receivables Pursuant to Section 9.02 of the Agreement. (a)
Not later than 12:00 noon, New York City time, on the Distribution Date
following the date on which the Insolvency Proceeds are deposited into the
Collection Account pursuant to Section 9.02(b) of the Agreement, the Trustee
shall (in the following priority and, in each case, after giving effect to any
deposits and distributions otherwise to be made on such Distribution Date) (i)
deduct an amount equal to the Class A Invested Amount on such Distribution Date
from the portion of the Insolvency Proceeds allocated to Allocable Principal
Collections and deposit such amount in the Class A Principal Funding Account,
provided that the amount of such deposit shall not exceed the product of (x) the
portion of the Insolvency Proceeds allocated to Allocable Principal Collections
and (y) the Principal Allocation Percentage with respect to the related Due
Period, (ii) deduct an amount equal to the Class B Invested Amount on such
Distribution Date from the portion of the Insolvency Proceeds allocated to
Allocable Principal Collections and retain such amount in the Collection Account
for distribution to the Class B Certificateholders, provided that such amount
shall not exceed (x) the product of the portion of the Insolvency Proceeds
allocated to Allocable Principal Collections and the Principal Allocation
Percentage with respect to such Due Period, minus (y) the amount deposited into
the Class A Principal Funding Account pursuant to clause (a)(i) of this
sentence, and (iii) deduct an amount equal to the CCA Invested Amount, if any,
on such Distribution Date from the portion of the Insolvency Proceeds allocated
to Allocable Principal Collections and distribute, pro rata, such amount to the
Cash Collateral Depositor and each Additional Cash Collateral Depositor for
application in accordance with the Loan Agreement and each Additional Loan
Agreement, respectively, provided that the amount of such distribution shall not
exceed (x) the product of the portion of the Insolvency Proceeds allocated to
Allocable Principal Collections and the Principal Allocation Percentage with
respect to such Due Period minus (y) the amount deposited in the Class A
Principal Funding Account pursuant to clause (a)(i) of this sentence and the
amount retained in the


<PAGE>

                                                                              74

Collection Account pursuant to clause (a)(ii) of this sentence. The remainder of
the portion of the Insolvency Proceeds allocated to Allocable Principal
Collections shall be allocated to the Sellers' Interest and shall be released to
the Sellers on such Distribution Date.

               (b) Not later than 12:00 noon, New York City time, on such
Distribution Date, the Trustee shall (in the following priority and, in each
case, after giving effect to any deposits and distributions otherwise to be made
on such Distribution Date) (i) deduct an amount equal to the sum of (w) Class A
Monthly Interest for such Distribution Date, (x) any Class A Monthly Interest
previously due but not deposited into Class A Interest Funding Account on a
prior Distribution Date, (y) the amount of Class A Additional Interest, if any,
for such Distribution Date and any Class A Additional Interest previously due
but not deposited into the Class A Interest Funding Account on a prior
Distribution Date, and (z) the amount of the Class A Funding Account Shortfall
for such Distribution Date and any Class A Funding Account Shortfall previously
due but not deposited into the Class A Interest Funding Account on a prior
Distribution Date, from the portion of the Insolvency Proceeds allocated to
Allocable Finance Charge Collections and deposit such amount in the Class A
Interest Funding Account, provided that the amount of such deposit shall not
exceed the product of (x) the portion of the Insolvency Proceeds allocated to
Allocable Finance Charge Collections, (y) the Floating Allocation Percentage
with respect to such Due Period and (z) a fraction, the numerator of which is
the Class A Invested Amount with respect to such Distribution Date and the
denominator of which is the Invested Amount with respect to such Distribution
Date and (ii) deduct an amount equal to the sum of (w) Class B Monthly Interest
for such Distribution Date, (x) any Class B Monthly Interest previously due but
not deposited into the Class B Interest Funding Account on a prior Distribution
Date, (y) the Cumulative Excess Interest Amount with respect to such
Distribution Date, and (z) the amount of Class B Additional Interest, if any,
for such Distribution Date and any Class B Additional Interest previously due
but not deposited into the Class B Interest Funding Account on a prior
Distribution Date, from the portion of the Insolvency Proceeds allocated to
Allocable Finance Charge Collections and deposit such amount into the Class B
Interest Funding Account, provided


<PAGE>

                                                                              75

that the amount of such deposit shall not exceed the product of (x) the portion
of the Insolvency Proceeds allocated to Allocable Finance Charge Collections,
(y) the Floating Allocation Percentage with respect to such Due Period and (z) a
fraction, the numerator of which is the Class B Invested Amount with respect to
such Distribution Date and the denominator of which is the Invested Amount with
respect to such Distribution Date. The remainder of the Insolvency Proceeds
allocated to Allocable Finance Charge Collections shall be distributed, pro
rata, to the Cash Collateral Depositor and each Additional Cash Collateral
Depositor for application in accordance with the provisions of the Loan
Agreement and each Additional Loan Agreement, respectively.

               (c) Notwithstanding anything to the contrary in this Series
Supplement or the Agreement, the entire amount deposited in the Class A
Principal Funding Account and the Interest Funding Accounts and the amount
retained in the Collection Account for distribution to the Class B
Certificateholders pursuant to this Section and all other amounts on deposit
therein for distribution to the Series 1998-1 Certificateholders shall be
distributed in full to the Series 1998-1 Certificateholders on the Distribution
Date on which funds are deposited pursuant to this Section (or, if not so
deposited on a Distribution Date, on the immediately following Distribution
Date) and shall be deemed to be a final distribution pursuant to Section 12.02
of the Agreement.

               (d) Notwithstanding any provision of the Agreement or this Series
Supplement, for purposes of Section 9.02(a) of the Agreement, the Holders of the
Series 1998-1 Certificates shall not be deemed to have disapproved a liquidation
of the Receivables following an Insolvency Event with respect to any of the
Sellers unless (i) holders of more than 50% of the aggregate unpaid principal
amount of each of the Class A Certificates and the Class B Certificates and (ii)
the Cash Collateral Depositor and each Additional Cash Collateral Depositor
shall have disapproved of such liquidation (or, if the Cash Collateral Depositor
and any Additional Cash Collateral Depositor shall have assigned all or part of
their respective interests under the Loan Agreement and such Additional Loan
Agreements, respectively, to one or more Persons, then one or more


<PAGE>

                                                                              76

Persons holding more than 50% of such interest shall have disapproved of such
liquidation).


                                   ARTICLE IX

                                    Covenants

               Section 9.01. Reduction in Portfolio Yield. Citibank (South
Dakota), in its capacity as a Seller, and each Additional Seller, hereby
covenant that upon the occurrence of an Amortization Event described in Section
6.01(e), except as is otherwise required by any Requirements of Law, it will not
reduce the Periodic Rate Finance Charge applicable to any Account to a rate that
would result in the weighted average of the Periodic Rate Finance Charges
applicable to all the Accounts as of the last day of any Due Period being less
than the sum of the weighted average of the Certificate Rates of each
outstanding Series as of such last day and 6%.


                                    ARTICLE X

                            Miscellaneous Provisions

               Section 10.01. Ratification of Agreement. As supplemented by this
Series Supplement, the Agreement is in all respects ratified and confirmed and
the Agreement as so supplemented by this Series Supplement shall be read, taken
and construed as one and the same instrument.

               Section 10.02. Counterparts. This Series Supplement may be
executed in two or more counterparts, and by different parties on separate
counterparts, each of which shall be an original, but all of which shall
constitute one and the same instrument.

               Section 10.03.  Governing Law.  THIS SERIES SUPPLEMENT SHALL BE
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT
REFERENCE TO ITS CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND
REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH
LAWS.


<PAGE>

                                                                              77

               Section 10.04.  Construction of Agreement.  The Sellers hereby
confirm that the security interest granted to the Trustee pursuant to
Section 13.18 of the Agreement is for the benefit of (a) the Investor
Certificateholders and (b) the Cash Collateral Depositor and the Additional Cash


<PAGE>

                                                                              78

Collateral Depositor to the extent of the CCA Invested Amount.


               IN WITNESS WHEREOF, the Sellers, the Servicer and the Trustee
have caused this Series Supplement to be duly executed by their respective
officers as of the day and year first above written.


                                            CITIBANK (SOUTH DAKOTA), N.A.,
                                            Seller and Servicer,

                                            by: /s/ Eugene D. Rowenhorst
                                            Title: Senior Vice President


                                            CITIBANK (NEVADA), NATIONAL
                                            ASSOCIATION, Seller,

                                            by: /s/ Robert D. Clark
                                            Title: Chief Financial Officer


                                            BANKERS TRUST COMPANY, as
                                            successor to Yasuda Bank and
                                            Trust Company, (U.S.A.),
                                            Trustee,

                                            by: /s/ Patricia M.F. Russo
                                            Title: Vice President


<PAGE>

                                                                     EXHIBIT A-1



REGISTERED                                                        $____________*

No. R-                                                      CUSIP No. [        ]

                  [Unless this Class A Certificate is presented by an authorized
representative of The Depository Trust Company, a New York corporation ("DTC"),
to the issuer or its agent for registration of transfer, exchange or payment,
and any certificate issued is registered in the name of Cede & Co. or in such
other name as is requested by an authorized representative of DTC (and any
payment is made to Cede & Co. or to such other entity as is requested by an
authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered
owner hereof, Cede & Co., has an interest herein.]

                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

              5.750% CLASS A CREDIT CARD PARTICIPATION CERTIFICATE

                      Class A Expected Final Payment Date:
                       The January 2001 Distribution Date

                 Each $1,000 minimum denomination represents an


                       CITIBANK CREDIT CARD MASTER TRUST I

the corpus of which consists primarily of receivables generated from time to
time in the ordinary course of business in a portfolio of revolving credit card
accounts by

                          CITIBANK (SOUTH DAKOTA), N.A.
                                       and
                               CITIBANK (NEVADA),
                              NATIONAL ASSOCIATION

and, in certain circumstances, certain Additional Sellers (as defined in the
Pooling and Servicing Agreement referred to below).

                  (Not an interest in or obligation of Citibank
                    (South Dakota), N.A., Citibank (Nevada),

_____________________________
   * Denominations of $1,000 and integral multiples of
$1,000 in excess thereof.


<PAGE>

                                                                               2

                 National Association, any Additional Sellers or
                             any affiliate thereof)


<PAGE>

                                                                               3

This certifies that [      ] (the "Class A Certificateholder") is the registered
owner of a fractional undivided interest in certain assets of a trust (the
"Trust") created pursuant to the Pooling and Servicing Agreement dated as of May
29, 1991 (as amended and supplemented, the "Agreement"), as supplemented by the
Series 1998-1 Supplement dated as of January [ ], 1998 (as amended and
supplemented, the "Series Supplement"), among Citibank (South Dakota), N.A., a
national banking association, as Seller and Servicer, Citibank (Nevada),
National Association, a national banking association, as Seller, and Bankers
Trust Company, a New York banking corporation, as successor to Yasuda Bank and
Trust Company (U.S.A.), as trustee (the "Trustee"). The corpus of the Trust
consists of (i) a portfolio of all receivables (the "Receivables") existing in
the revolving credit card accounts identified under the Agreement from time to
time (the "Accounts"), (ii) all Receivables generated under the Accounts from
time to time thereafter, (iii) funds collected or to be collected from
cardholders in respect of the Receivables, (iv) all funds which are from time to
time on deposit in the Collection Account and in the Series Accounts, (v) the
benefits of the Cash Collateral Account and (vi) all other assets and interests
constituting the Trust. The Holder of this Certificate is entitled to the
benefit of funds on deposit in a Cash Collateral Account to the extent provided
in the Series Supplement. Although a summary of certain provisions of the
Agreement and the Series Supplement is set forth below and on the Summary of
Terms and Conditions attached hereto and made a part hereof, this Class A
Certificate does not purport to summarize the Agreement and the Series
Supplement and reference is made to the Agreement and the Series Supplement for
information with respect to the interests, rights, benefits, obligations,
proceeds and duties evidenced hereby and the rights, duties and obligations of
the Trustee. A copy of the Agreement and the Series Supplement (without
schedules) may be requested from the Trustee by writing to the Trustee at the
Corporate Trust Office. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to them in the Agreement or the Series
Supplement, as applicable.

                  This Class A Certificate is issued under and is subject to the
terms, provisions and conditions of the Agreement and the Series Supplement, to
which Agreement and


<PAGE>

                                                                               4

Series Supplement, each as amended and supplemented from time to time, the Class
A Certificateholder by virtue of the acceptance hereof assents and is bound.

                  It is the intent of the Sellers and the Investor
Certificateholders that, for Federal, state and local income and franchise tax
purposes only, the Investor Certificates will qualify as indebtedness of the
Sellers secured by the Receivables. The Class A Certificateholder, by the
acceptance of this Class A Certificate, agrees to treat this Class A Certificate
for Federal, state and local income and franchise tax purposes as indebtedness
of the Sellers.

                  In general, payments of principal with respect to the Class A
Certificates are limited to the Class A Invested Amount, which may be less than
the unpaid principal balance of the Class A Certificates. The Class A Expected
Final Payment Date is the January 2001 Distribution Date, but principal with
respect to the Class A Certificates may be paid earlier or later under certain
circumstances described in the Agreement and the Series Supplement. If for one
or more months during the Accumulation Period there are not sufficient funds to
pay the Controlled Amortization Amount, then to the extent that excess funds are
not available on subsequent Distribution Dates with respect to the Accumulation
Period to make up for such shortfalls, the final payment of principal of the
Class A Certificates will occur later than the Class A Expected Final Payment
Date. If the principal of the Class A Certificates and the Class B Certificates
is not paid in full on or prior to the Termination Date, the Trustee will sell
or cause to be sold on such Termination Date Principal Receivables (and the
related Finance Charge Receivables) (or interests therein) in an amount equal to
110% of the Invested Amount as of such Termination Date, subject to certain
limitations, and shall immediately deposit the Termination Proceeds allocable to
the Series 1998-1 Certificateholders' Interest in the Collection Account. The
Termination Proceeds shall be allocated and distributed to the Class A
Certificateholders and the Class B Certificateholders in accordance with the
Series Supplement.

                  Unless the certificate of authentication hereon has been
executed by or on behalf of the Trustee, by manual or facsimile signature, this
Class A Certificate shall not


<PAGE>

                                                                               5

be entitled to any benefit under the Agreement or the Series Supplement or be
valid for any purpose.


                  IN WITNESS WHEREOF, the Banks have caused this Class A
Certificate to be duly executed.


                                                  CITIBANK (SOUTH DAKOTA), N.A.,


                                                  By: __________________________
                                                      Name:
                                                      Title:


                                                  CITIBANK (NEVADA),
                                                  NATIONAL ASSOCIATION,


                                                  By: _________________________
                                                      Name:
                                                      Title:

Dated:  January [  ], 1998


<PAGE>

                                                                               6


                     TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Class A Certificates described in the within-mentioned
Agreement and Series Supplement.


BANKERS TRUST COMPANY, as successor to
Yasuda Bank and Trust Company (U.S.A.),
as Trustee,


By: _________________________
       Authorized Officer


or


By: CITIBANK, N.A.,
           as Authenticating Agent
           for the Trustee,


By: _________________________
       Authorized Officer


<PAGE>

                                                                               7

                      CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

              5.750% CLASS A CREDIT CARD PARTICIPATION CERTIFICATE


                         Summary of Terms and Conditions


                  The Receivables consist of Principal Receivables which arise
generally from the purchase of merchandise and services and amounts advanced to
cardholders as cash advances and Finance Charge Receivables which arise
generally from Periodic Rate Finance Charges, Cash Advance Fees, Late Payment
Fees and annual membership fees with respect to the Accounts. This Class A
Certificate is one of a series of Certificates entitled Citibank Credit Card
Master Trust I, Series 1998-1 (the "Series 1998-1 Certificates"), and one of a
class thereof entitled 5.750% Class A Credit Card Participation Certificates,
Series 1998- 1 (the "Class A Certificates"), each of which represents a
fractional undivided interest in certain assets of the Trust. The Trust Assets
are allocated in part to the certificateholders of all outstanding Series (the
"Certificateholders' Interest") with the remainder allocated to the Sellers. The
aggregate interest represented by the Class A Certificates at any time in the
Principal Receivables in the Trust shall not exceed an amount equal to the Class
A Invested Amount at such time. The Class A Initial Invested Amount is
$750,000,000. The Class A Invested Amount on any date will be an amount equal to
(a) the Class A Initial Invested Amount, minus (b) the aggregate amount of
principal payments made to Class A Certificateholders prior to such date, minus
(c) the Class A Principal Funding Account Balance as of such date and minus (d)
the excess, if any, of the aggregate amount of Class A Investor Charge-Offs over
Class A Investor Charge-Offs reimbursed pursuant to Section 4.08 of the Series
Supplement prior to such date. In addition to the Class A Certificates, a class
of the Series 1998-1 Certificates entitled 5.875% Class B Credit Card
Participation Certificates, Series 1998-1 (the "Class B Certificates") will be
issued. Also, a Sellers' Certificate has been issued to the Sellers pursuant to
the Agreement which represents the Sellers' Interest.


<PAGE>

                                                                               8

                  Subject to the terms and conditions of the Agreement, the
Sellers may from time to time direct the Trustee, on behalf of the Trust, to
issue one or more new Series of Investor Certificates, which will represent
fractional undivided interests in certain of the Trust Assets.

                  On each Payment Date, the Paying Agent shall distribute to
each Class A Certificateholder of record on the last day of the preceding
calendar month (each a "Record Date") such Class A Certificateholder's pro rata
share of such amounts on deposit in the Class A Interest Funding Account or the
Class A Principal Funding Account as are payable to the Class A
Certificateholders pursuant to the Agreement and the Series Supplement.
Distributions with respect to this Class A Certificate will be made by the
Paying Agent by check mailed to the address of the Class A Certificateholder of
record appearing in the Certificate Register without the presentation or
surrender of this Class A Certificate or the making of any notation thereon
(except for the final distribution in respect of this Class A Certificate)
except that with respect to Class A Certificates registered in the name of Cede
& Co., the nominee for The Depository Trust Company, distributions will be made
in the form of immediately available funds. Final payment of this Class A
Certificate will be made only upon presentation and surrender of this Class A
Certificate at the office or agency specified in the notice of final
distribution delivered by the Trustee to the Class A Certificateholders in
accordance with the Agreement and the Series Supplement.

                  On the Distribution Date occurring on or after the date on
which the Invested Amount is reduced to 5% of the Initial Invested Amount or
less, the Sellers have the option to repurchase the Series 1998-1
Certificateholders' Interest in the Trust. The repurchase price (determined
after giving effect to any payment of principal and interest on such
Distribution Date) will be equal to the Reassignment Amount for such
Distribution Date.

                  This Class A Certificate does not represent an obligation of,
or an interest in, the Sellers, the Servicer or any affiliate of any of them and
is not insured or guaranteed by the Federal Deposit Insurance Corporation or any
other governmental agency or instrumentality.  This


<PAGE>

                                                                               9

Class A Certificate is limited in right of payment to certain Collections with
respect to the Receivables (and certain other amounts), all as more specifically
set forth hereinabove and in the Agreement and the Series Supplement.

                  The Agreement or any Supplement may, subject to certain
conditions, be amended by the Sellers, the Servicer and the Trustee without
Investor Certificateholder consent. The Trustee may, but shall not be obligated
to, enter into any such amendment which affects the Trustee's rights, duties or
immunities under the Agreement or otherwise.

                  The Agreement or any Supplement may also be amended from time
to time (including in connection with the issuance of a Supplemental
Certificate) by the Servicer, the Sellers and the Trustee, with the consent of
the Holders of Investor Certificates evidencing not less than 66-2/3% of the
aggregate unpaid principal amount of the Investor Certificates of all adversely
affected Series, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of the Agreement or any Supplement
or of modifying in any manner the rights of the Investor Certificateholders;
provided, however, that no such amendment shall (i) reduce in any manner the
amount of or delay the timing of any distributions to be made to Investor
Certificateholders or deposits of amounts to be so distributed or the amount
available under any Series Enhancement without the consent of each affected
Investor Certificateholder, (ii) change the definition of or the manner of
calculating the interest of any Investor Certificateholder without the consent
of each affected Investor Certificateholder, (iii) reduce the aforesaid
percentage required to consent to any such amendment without the consent of each
Investor Certificateholder or (iv) adversely affect the rating of any Series or
Class by the Rating Agency without the consent of the Holders of Investor
Certificates of such Series or Class evidencing not less than 66-2/3% of the
aggregate unpaid principal amount of the Investor Certificates of such Series or
Class. The Trustee may, but shall not be obligated to, enter into any such
amendment which affects the Trustee's rights, duties or immunities under this
Agreement or otherwise.

                  The Class A Certificates are issuable only in minimum
denominations of $1,000 and integral multiples of $1,000. The transfer of this
Class A Certificate shall be


<PAGE>

                                                                              10

registered in the Certificate Register upon surrender of this Class A
Certificate for registration of transfer at any office or agency maintained by
the Transfer Agent and Registrar accompanied by a written instrument of
transfer, in a form satisfactory to the Trustee or the Transfer Agent and
Registrar, duly executed by the Class A Certificateholder or such Class A
Certificateholder's attorney, and duly authorized in writing with such signature
guaranteed, and thereupon one or more new Class A Certificates of authorized
denominations and for the same aggregate fractional undivided interest will be
issued to the designated transferee or transferees.

                  As provided in the Series Supplement, the Banks may, from time
to time, during the Revolving Period, subject to certain conditions set forth in
the Series Supplement, cause the Trustee to issue Additional Class A
Certificates. When issued, the Additional Class A Certificates will be identical
in all respects to the other outstanding Class A Certificates and will be
equally and ratably entitled to the benefits of the Agreement and the Series
Supplement without preference, priority or distinction.

                  As provided in the Agreement and subject to certain
limitations therein set forth, Class A Certificates are exchangeable for new
Class A Certificates evidencing like aggregate fractional undivided interests as
requested by the Class A Certificateholder surrendering such Class A
Certificates. No service charge may be imposed for any such exchange but the
Servicer or Transfer Agent and Registrar may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
therewith.

                  The Servicer, the Trustee, the Paying Agent and the Transfer
Agent and Registrar and any agent of any of them, may treat the person in whose
name this Class A Certificate is registered as the owner hereof for all
purposes, and neither the Servicer nor the Trustee, the Paying Agent, the
Transfer Agent and Registrar, nor any agent of any of them, shall be affected by
notice to the contrary except in certain circumstances described in the
Agreement.

                  THIS CLASS A CERTIFICATE SHALL BE CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK, WITHOUT


<PAGE>

                                                                              11

REFERENCE TO ITS CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND
REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH
LAWS.


<PAGE>

                                                                              12

                                   ASSIGNMENT


Social Security or other identifying number of assignee ________________________

                  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto _________________________________________________________________
                           (name and address of assignee)

the within certificate and all rights thereunder, and hereby irrevocably
constitutes and appoints ______________________, attorney, to transfer said
certificate on the books kept for registration thereof, with full power of
substitution in the premises.

Dated:  ______________                         _____________________*


                                                Signature Guaranteed:


                                                ______________________


__________________________
(*) NOTE: The signature to this assignment must correspond with the name of the
registered owner as it appears on the face of the within Certificate in every
particular, without alteration, enlargement or any change whatsoever.


<PAGE>

                                                                     EXHIBIT A-2



REGISTERED                                                          $__________*

No. R-                                                     CUSIP NO. [         ]

                  [Unless this Class B Certificate is presented by an authorized
representative of The Depository Trust Company, a New York corporation ("DTC"),
to the issuer or its agent for registration of transfer, exchange or payment,
and any certificate issued is registered in the name of Cede & Co. or in such
other name as is requested by an authorized representative of DTC (and any
payment is made to Cede & Co. or to such other entity as is requested by an
authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered
owner hereof, Cede & Co., has an interest herein.]


                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

                           5.875% CLASS B CREDIT CARD

                            PARTICIPATION CERTIFICATE


                      Class B Expected Final Payment Date:
                       The January 2001 Distribution Date


                 Each $1,000 minimum denomination represents an
                   undivided interest in certain assets of the


                       CITIBANK CREDIT CARD MASTER TRUST I

the corpus of which consists primarily of receivables generated from time to
time in the ordinary course of business in a portfolio of revolving credit card
accounts by

                          CITIBANK (SOUTH DAKOTA), N.A.
                                       and
                               CITIBANK (NEVADA),
                              NATIONAL ASSOCIATION

____________________________
   * Denominations of $1,000 and integral multiples of
$1,000 in excess thereof.


<PAGE>

                                                                               2

and, in certain circumstances, certain Additional Sellers (as defined in the
Pooling and Servicing Agreement referred to below).

                  (Not an interest in or obligation of Citibank
                (South Dakota), N.A., Citibank (Nevada), National
                     Association, any Additional Sellers or
                             any affiliate thereof)


<PAGE>

                                                                               3


This certifies that                (the "Class B             Certificateholder")
is the registered owner of a fractional undivided interest in certain assets of
a trust (the "Trust") created pursuant to the Pooling and Servicing Agreement
dated as of May 29, 1991 (as amended and supplemented, the "Agreement"),
as supplemented by the Series 1998-1 Supplement dated as of January 14, 1998 (as
amended and supplemented, the "Series Supplement"), among Citibank (South
Dakota), N.A., a national banking association, as Seller and Servicer, Citibank
(Nevada), National Association, a national banking association, as Seller, and
Bankers Trust Company, a New York banking corporation, as successor to Yasuda
Bank and Trust Company (U.S.A.), as trustee (the "Trustee"). The corpus of the
Trust consists of (i) a portfolio of all receivables (the "Receivables")
existing in the revolving credit card accounts identified under the Agreement
from time to time (the "Accounts"), (ii) all Receivables generated under the
Accounts from time to time thereafter, (iii) funds collected or to be collected
from cardholders in respect of the Receivables, (iv) all funds which are from
time to time on deposit in the Collection Account and in the Series Accounts,
(v) the benefits of the Cash Collateral Account and (vi) all other assets and
interests constituting the Trust. The Holder of this Certificate is entitled to
the benefit of funds on deposit in a Cash Collateral Account to the extent
provided in the Series Supplement. Although a summary of certain provisions of
the Agreement and the Series Supplement is set forth below and on the Summary of
Terms and Conditions attached hereto and made a part hereof, this Class B
Certificate does not purport to summarize the Agreement and the Series
Supplement and reference is made to the Agreement and the Series Supplement for
information with respect to the interests, rights, benefits, obligations,
proceeds and duties evidenced hereby and the rights, duties and obligations of
the Trustee. A copy of the Agreement and the Series Supplement (without
schedules) may be requested from the Trustee by writing to the Trustee at the
Corporate Trust Office. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to them in the Agreement or the Series
Supplement, as applicable.

                  This Class B Certificate is issued under and is subject to the
terms, provisions and conditions of the Agreement and the Series Supplement, to
which Agreement and Series Supplement, each as amended and supplemented from


<PAGE>

                                                                               4

time to time, the Class B Certificateholder by virtue of the acceptance hereof
assents and is bound.

                  It is the intent of the Sellers and the Investor
Certificateholders that, for Federal, state and local income and franchise tax
purposes only, the Investor Certificates will qualify as indebtedness of the
Sellers secured by the Receivables. The Class B Certificateholder, by the
acceptance of this Class B Certificate, agrees to treat this Class B Certificate
for Federal, state and local income and franchise tax purposes as indebtedness
of the Sellers.

                  In general, payments of principal with respect to the Class B
Certificates are limited to the Class B Invested Amount, which may be less than
the unpaid principal balance of the Class B Certificates, except that principal
payments may be made in excess of the Class B Invested Amount to the extent
amounts are available for that purpose in the Cash Collateral Account. The Class
B Expected Final Payment Date is the January 2001 Distribution Date, but
principal with respect to the Class B Certificates may be paid earlier or later
under certain circumstances described in the Agreement and the Series
Supplement. Principal payments with respect to the Class B Certificates will not
commence until the Class A Invested Amount is paid in full. In addition, the
final payment of principal of the Class B Certificates will occur later than the
Class B Expected Final Payment Date if Collections of Receivables allocable to
pay principal of the Class B Certificates are insufficient to pay the Class B
Invested Amount on or prior to such Distribution Date. If the principal of the
Class A Certificates and the Class B Certificates is not paid in full on or
prior to the Termination Date, the Trustee will sell or cause to be sold on such
Termination Date Principal Receivables (and the related Finance Charge
Receivables) (or interests therein) in an amount equal to 110% of the Invested
Amount as of such Termination Date, subject to certain limitations, and shall
immediately deposit the Termination Proceeds allocable to the Series 1998-1
Certificateholders' Interest in the Collection Account. The Termination Proceeds
shall be allocated and distributed to the Class A Certificateholders and the
Class B Certificateholders in accordance with the Series Supplement.

                  Unless the certificate of authentication hereon has been
executed by or on behalf of the Trustee, by manual or facsimile signature, this
Class B Certificate shall not


<PAGE>

                                                                               5

be entitled to any benefit under the Agreement or the Series Supplement or be
valid for any purpose.


                  IN WITNESS WHEREOF, the Banks have caused this Class B
Certificate to be duly executed.


                                                  CITIBANK (SOUTH DAKOTA), N.A.,

                                                  By: __________________________
                                                      Name:
                                                      Title:


                                                  CITIBANK (NEVADA),
                                                  NATIONAL ASSOCIATION,

                                                  By: _________________________
                                                      Name:
                                                      Title:


Dated:


<PAGE>

                     TRUSTEE'S CERTIFICATE OF AUTHENTICATION


This is one of the Class B Certificates described in the within-mentioned
Agreement and Series Supplement.

BANKERS TRUST COMPANY, as successor to
Yasuda Bank and Trust Company (U.S.A.),
as Trustee,


By: _________________________
       Authorized Officer


or


By: CITIBANK, N.A.,
           as Authenticating Agent
           for the Trustee,


By: _________________________
       Authorized Officer


<PAGE>

                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

              5.875% CLASS B CREDIT CARD PARTICIPATION CERTIFICATE


                         Summary of Terms and Conditions


                  The Receivables consist of Principal Receivables which arise
generally from the purchase of merchandise and services and amounts advanced to
cardholders as cash advances and Finance Charge Receivables which generally
arise from Periodic Rate Finance Charges, Cash Advance Fees, Late Payment Fees
and annual membership fees with respect to the Accounts. This Class B
Certificate is one of a series of Certificates entitled Citibank Credit Card
Master Trust I, Series 1998-1 (the "Series 1998-1 Certificates"), and one of a
class thereof entitled 5.875% Class B Credit Card Participation Certificates,
Series 1998-1 (the "Class B Certificates"), each of which represents a
fractional undivided interest in certain assets of the Trust. The Trust Assets
are allocated in part to the certificateholders of all outstanding Series (the
"Certificateholders' Interest") with the remainder allocated to the Sellers. The
aggregate interest represented by the Class B Certificates at any time in the
Principal Receivables in the Trust shall not exceed an amount equal to the Class
B Invested Amount at such time. The Class B Initial Invested Amount is
$48,000,000. The Class B Invested Amount on any date will be an amount equal to
(a) the Class B Initial Invested Amount, minus (b) the aggregate amount of
principal payments made to Class B Certificateholders prior to such date (other
than any principal payments made to Class B Certificateholders from the proceeds
of a Reimbursement Draw Amount pursuant to Section 4.11(f) of the Series
Supplement), minus (c) the aggregate amount of Class B Investor Charge-Offs for
all prior Distribution Dates pursuant to Section 4.08(b) of the Series
Supplement, minus (d) the aggregate amount of Subordinated Principal Collections
allocated on all prior Distribution Dates pursuant to Section 4.10(a) of the
Series Supplement (excluding any Subordinated Principal Collections that have
resulted in a reduction in the CCA Invested Amount pursuant to Section 4.08(c)
of the Series Supplement), minus (e) an amount equal to the amount by which the
Class B Invested Amount has been reduced on all prior Distribution Dates
pursuant to Section 4.08(a) of the Series Supplement, and plus (f) the sum of
(i) the aggregate amount of any Allocable Miscellaneous Payments allocated and
available on


<PAGE>

                                                                               2

all prior Distribution Dates pursuant to Section 4.08(b)(i) of the Series
Supplement and (ii) the amount of Excess Finance Charge Collections allocated
and available on all prior Distribution Dates pursuant to Section 4.09(f) of the
Series Supplement for the purpose of reimbursing amounts deducted pursuant to
the foregoing clauses (c), (d) and (e). In addition to the Class B Certificates,
a class of the Series 1998-1 Certificates entitled 5.750% Class A Credit Card
Participation Certificates, Series 1998-1 (the "Class A Certificates") will be
issued. Also, a Sellers' Certificate has been issued to the Sellers pursuant to
the Agreement which represents the Sellers' Interest.

                  Subject to the terms and conditions of the Agreement, the
Sellers may from time to time direct the Trustee, on behalf of the Trust, to
issue one or more new Series of Investor Certificates, which will represent
fractional undivided interests in certain of the Trust Assets.

                  On each Payment Date, the Paying Agent shall distribute to
each Class B Certificateholder of record on the last day of the preceding
calendar month (each a "Record Date") such Class B Certificateholder's pro rata
share of such amounts (including amounts on deposit in the Class B Interest
Funding Account or the Collection Account) as are payable to the Class B
Certificateholders pursuant to the Agreement and the Series Supplement.
Distributions with respect to this Class B Certificate will be made by the
Paying Agent by check mailed to the address of the Class B Certificateholder of
record appearing in the Certificate Register without the presentation or
surrender of this Class B Certificate or the making of any notation thereon
(except for the final distribution in respect of this Class B Certificate)
except that with respect to Class B Certificates registered in the name of Cede
& Co., the nominee for the Depository Trust Company, distributions will be made
in the form of immediately available funds. Final payment of this Class B
Certificate will be made only upon presentation and surrender of this Class B
Certificate at the office or agency specified in the notice of final
distribution delivered by the Trustee to the Class B Certificateholders in
accordance with the Agreement and the Series Supplement.

                  On the Distribution Date occurring on or after the date on
which the Invested Amount is reduced to 5% of the


<PAGE>

                                                                               3

Initial Invested Amount or less, the Sellers have the option to repurchase the
Series 1998-1 Certificateholders' Interest in the Trust. The repurchase price
(determined after giving effect to any payment of principal and interest on such
Distribution Date) will be equal to the Reassignment Amount
for such Distribution Date.

                  This Class B Certificate does not represent an obligation of,
or an interest in, the Sellers, the Servicer or any affiliate of any of them and
is not insured or guaranteed by the Federal Deposit Insurance Corporation or any
other governmental agency or instrumentality. This Class B Certificate is
limited in right of payment to certain Collections with respect to the
Receivables (and certain other amounts), all as more specifically set forth
hereinabove and in the Agreement and the Series Supplement.

                  The Agreement or any Supplement may, subject to certain
conditions, be amended by the Sellers, the Servicer and the Trustee without
Investor Certificateholder consent. The Trustee may, but shall not be obligated
to, enter into any such amendment which affects the Trustee's rights, duties or
immunities under the Agreement or otherwise.

                  The Agreement or any Supplement may also be amended from time
to time (including in connection with the issuance of a Supplemental
Certificate) by the Servicer, the Sellers and the Trustee, with the consent of
the Holders of Investor Certificates evidencing not less than 66-2/3% of the
aggregate unpaid principal amount of the Investor Certificates of all adversely
affected Series, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of the Agreement or any Supplement
or of modifying in any manner the rights of the Investor Certificateholders;
provided, however, that no such amendment shall (i) reduce in any manner the
amount of or delay the timing of any distributions to be made to Investor
Certificateholders or deposits of amounts to be so distributed or the amount
available under any Series Enhancement without the consent of each affected
Investor Certificateholder, (ii) change the definition of or the manner of
calculating the interest of any Investor Certificateholder without the consent
of each affected Investor Certificateholder, (iii) reduce the aforesaid
percentage required to consent to any such amendment without the consent of each
Investor Certificateholder or (iv) adversely affect the rating of any Series or
Class by the


<PAGE>

                                                                               4

Rating Agency without the consent of the Holders of Investor Certificates of
such Series or Class evidencing not less than 66-2/3% of the aggregate unpaid
principal amount of the Investor Certificates of such Series or Class. The
Trustee may, but shall not be obligated to, enter into any such amendment which
affects the Trustee's rights, duties or immunities under this Agreement or
otherwise.

                  The Class B Certificates are issuable only in minimum
denominations of $1,000 and integral multiples of $1,000. The transfer of this
Class B Certificate shall be registered in the Certificate Register upon
surrender of this Class B Certificate for registration of transfer at any office
or agency maintained by the Transfer Agent and Registrar accompanied by a
written instrument of transfer, in a form satisfactory to the Trustee or the
Transfer Agent and Registrar, duly executed by the Class B Certificateholder or
such Class B Certificateholder's attorney, and duly authorized in writing with
such signature guaranteed, and thereupon one or more new Class B Certificates of
authorized denominations and for the same aggregate fractional undivided
interest will be issued to the designated transferee or transferees.

                  As provided in the Series Supplement, the Banks may, from time
to time, during the Revolving Period, subject to certain conditions set forth in
the Series Supplement, cause the Trustee to issue Additional Class B
Certificates. When issued, the Additional Class B Certificates will be identical
in all respects to the other outstanding Class B Certificates and will be
equally and ratably entitled to the benefits of the Agreement and the Series
Supplement without preference, priority or distinction.

                  As provided in the Agreement and subject to certain
limitations therein set forth, Class B Certificates are exchangeable for new
Class B Certificates evidencing like aggregate fractional undivided interests as
requested by the Class B Certificateholder surrendering such Class B
Certificates. No service charge may be imposed for any such exchange but the
Servicer or Transfer Agent and Registrar may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
therewith.

                  The Servicer, the Trustee, the Paying Agent and the Transfer
Agent and Registrar and any agent of any of


<PAGE>

                                                                               5

them, may treat the person in whose name this Class B Certificate is registered
as the owner hereof for all purposes, and neither the Servicer nor the Trustee,
the Paying Agent, the Transfer Agent and Registrar, nor any agent of any of
them, shall be affected by notice to the contrary except in certain
circumstances described in the Agreement.


                  THIS CLASS B CERTIFICATE SHALL BE CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO ITS CONFLICT OF LAW
PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER
SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.


<PAGE>

                                                                               6

                                   ASSIGNMENT

Social Security or other identifying number of assignee_________________________

                  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto _________________________________________________________________
                           (name and address of assignee)

the within certificate and all rights thereunder, and hereby irrevocably
constitutes and appoints ______________________, attorney, to transfer said
certificate on the books kept for registration thereof, with full power of
substitution in the premises.

Dated:  ______________                      _______________________*


                                             Signature Guaranteed:


                                            ________________________


_________________________________
(*) NOTE: The signature to this assignment must correspond with the name of the
registered owner as it appears on the face of the within Certificate in every
particular, without alteration, enlargement or any change whatsoever.


<PAGE>

                                                                     EXHIBIT B-1


                    FORM OF MONTHLY PAYMENT INSTRUCTIONS AND
                         NOTIFICATION TO THE TRUSTEE AND
                        THE CASH COLLATERAL DEPOSITOR 1/

                    ________________________________________

                                                   
                          CITIBANK (SOUTH DAKOTA), N.A.

                    ________________________________________

                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

                    ________________________________________



                  The undersigned, a duly authorized representative of Citibank
(South Dakota), N.A. ("Citibank (South Dakota)"), as Servicer pursuant to the
Pooling and Servicing Agreement dated as of May 29, 1991 (as amended and
supplemented, the "Pooling and Servicing Agreement"), among Citibank (South
Dakota), Citibank (Nevada), National Association ("Citibank (Nevada)") and
Bankers Trust Company, as successor to Yasuda Bank and Trust Company (U.S.A.),
as trustee (the "Trustee"), does hereby certify as follows:

                  1. Capitalized terms used in this Certificate have their
         respective meanings set forth in the Pooling and Servicing Agreement or
         the Series 1998-1 Supplement dated as of January 14, 1998, among
         Citibank (South Dakota), Citibank (Nevada) and the Trustee (as amended
         and supplemented, the "Series Supplement"), as applicable. This
         Certificate is delivered pursuant to Section 4.11(i) of the Series
         Supplement.

                  2. Citibank (South Dakota) is the Servicer.

                  3. The undersigned is a Servicing Officer.


                        NOTIFICATION TO MAKE WITHDRAWALS
                        FROM THE CASH COLLATERAL ACCOUNT

                  Pursuant to Sections 4.11(c) through (i) of the
Series Supplement, the Servicer does hereby instruct the

__________________________________
     1/ To be delivered not less than seven calendar days prior to the
applicable Transfer Date.


<PAGE>

                                                                               2

Trustee (i) to make a withdrawal from the Cash Collateral Account on [        ],
199_, which date is a Transfer Date, in an aggregate amount as set forth below
in respect of the following amounts and (ii) to apply the proceeds of such
withdrawal in accordance with Section 4.11(i) of the Series Supplement:

         1.       Pursuant to Section 4.11(c):

                  Required Draw Amount in respect of the
         preceding Due Period ...........................................$______


         2. Pursuant to Section 4.11(d):

                  Interest Draw Amount in respect of the
         preceding Due Period ...........................................$______


         3. Pursuant to Section 4.11(e):

                  Default Draw Amount in respect of the
         preceding Due Period ...........................................$______


         4. Pursuant to Section 4.11(f):

                  Reimbursement Draw Amount in respect of the
         preceding Due Period ...........................................$______


         5. Pursuant to Section 4.11(g):

                  Special Draw Amount in respect of the
         preceding Due Period ...........................................$______


         6. Pursuant to Section 4.11(h):

                  Class A Principal Draw Amount in respect of
         the preceding Due Period .......................................$______

                  Class B Principal Draw Amount in respect of
         the preceding Due Period .......................................$______


<PAGE>

                                                                               3

         7. Pursuant to Section 4.11(i):

                  Total Draw Amount in respect of the
         preceding Due Period ...........................................$______

                                                                   Total $______


                  IN WITNESS WHEREOF, the undersigned has duly executed this
Certificate this ___ day of ______________, ______.


                                                  CITIBANK (SOUTH DAKOTA), N.A.,
                                                  Servicer,

                                                  by____________________________
                                                    Name:
                                                    Title:


<PAGE>

                                                                     EXHIBIT B-2


                    FORM OF MONTHLY PAYMENT INSTRUCTIONS AND
                         NOTIFICATION TO THE TRUSTEE AND
                   THE ADDITIONAL CASH COLLATERAL DEPOSITOR 1/
                    ________________________________________

                          CITIBANK (SOUTH DAKOTA), N.A.

                    ________________________________________


                       CITIBANK CREDIT CARD MASTER TRUST I

                                  SERIES 1998-1

                    ________________________________________


                  The undersigned, a duly authorized representative of Citibank
(South Dakota), N.A. ("Citibank (South Dakota)"), as Servicer pursuant to the
Pooling and Servicing Agreement dated as of May 29, 1991 (as amended and
supplemented, the "Pooling and Servicing Agreement"), among Citibank (South
Dakota), Citibank (Nevada), National Association ("Citibank (Nevada)") and
Bankers Trust Company, as successor to Yasuda Bank and Trust Company (U.S.A.),
as trustee (the "Trustee"), does hereby certify as follows:

                  1. Capitalized terms used in this Certificate have their
         respective meanings set forth in the Pooling and Servicing Agreement or
         the Series 1998-1 Supplement dated as of January 14, 1998, among
         Citibank (South Dakota), Citibank (Nevada) and the Trustee (as amended
         and supplemented, the "Series Supplement"), as applicable. This
         Certificate is delivered pursuant to Section 4.11(i) of the Series
         Supplement.

                  2. Citibank (South Dakota) is the Servicer.

                  3. The undersigned is a Servicing Officer.


                        NOTIFICATION TO MAKE WITHDRAWALS
                        FROM THE CASH COLLATERAL ACCOUNT

                  Pursuant to Sections 4.11(c) through (i) of the Series
Supplement, the Servicer does hereby instruct the

__________________________________
     1/ To be delivered not less than seven calendar days prior to the
applicable Transfer Date.


<PAGE>

                                                                               2

Trustee (i) to make a withdrawal from the Cash Collateral Account on [        ],
199_, which date is a Transfer Date, in an aggregate amount as set forth below
in respect of the following amounts and (ii) to apply the proceeds of such
withdrawal in accordance with Section 4.11(i) of the Series Supplement:

         1.       Pursuant to Section 4.11(c):

                  Required Draw Amount in respect of the
         preceding Due Period ...........................................$______


         2. Pursuant to Section 4.11(d):

                  Interest Draw Amount in respect of the
         preceding Due Period ...........................................$______


         3. Pursuant to Section 4.11(e):

                  Default Draw Amount in respect of the
         preceding Due Period ...........................................$______


         4. Pursuant to Section 4.11(f):

                  Reimbursement Draw Amount in respect of the
         preceding Due Period ...........................................$______


         5. Pursuant to Section 4.11(g):

                  Special Draw Amount in respect of the
         preceding Due Period ...........................................$______


         6. Pursuant to Section 4.11(h):

                  Class A Principal Draw Amount in respect of
         the preceding Due Period .......................................$______

                  Class B Principal Draw Amount in respect of
         the preceding Due Period .......................................$______


<PAGE>

                                                                               3


         7. Pursuant to Section 4.11(i):

                  Total Draw Amount in respect of the
         preceding Due Period ...........................................$______

                                                                   Total $______


                  IN WITNESS WHEREOF, the undersigned has duly executed this
Certificate this ___ day of ______________,_______.


                                                  CITIBANK (SOUTH DAKOTA), N.A.,
                                                  Servicer,

                                                   by___________________________
                                                     Name:
                                                     Title:


<PAGE>

                                                                       EXHIBIT C


                            FORM OF MONTHLY STATEMENT


                          CITIBANK (SOUTH DAKOTA), N.A.
                     CITIBANK (NEVADA), NATIONAL ASSOCIATION

 _______________________________________________________________________________

                       CITIBANK CREDIT CARD MASTER TRUST I
                                  SERIES 1998-1

 _______________________________________________________________________________


                  The undersigned, a duly authorized representative of Citibank
(South Dakota), N.A., as Servicer ("Citibank (South Dakota)"), pursuant to the
Pooling and Servicing Agreement dated as of May 29, 1991 (as amended and
supplemented, the "Agreement"), as supplemented by the Series 1998-1 Supplement
(as amended and supplemented, the "Series Supplement"), among Citibank (South
Dakota), Seller and Servicer, Citibank (Nevada), National Association, Seller,
and Bankers Trust Company, as successor to Yasuda Bank and Trust Company
(U.S.A.), as Trustee, does hereby certify the information set forth below.
Capitalized terms used in this Certificate have their respective meanings as set
forth in the Agreement or Series Supplement, as applicable.

                  This Certificate relates to the Due Period ending on and the
related Distribution Date.


A.       Information Regarding the Portfolio

         1.  Portfolio Yield ............................................._____%

                  Yield component [Finance Charge Receivables collected during
                  the Due Period / Principal Receivables in the Trust on the
                  last

                  day of the prior Due Period] ..........................._____%

                  Credit loss component [net charged-off Principal Receivables
                  during the Due Period / Principal Receivables in the Trust on
                  the last

                  day of the prior Due Period] ..........................._____%


<PAGE>

         2.       New purchase rate [aggregate purchases of merchandise and
                  services during the Due Period / Receivables in the Trust on
                  the last day
                  of the prior Due Period] ..............................._____%

         3.       Total payment rate [aggregate Collections during the Due
                  Period / Receivables in the Trust on the last day of
                  the prior Due Period] .................................._____%

         4.       Principal payment rate [aggregate collections with respect to
                  Principal Receivables during the Due Period / Principal
                  Receivables in the Trust on the last
                  day of the prior Due Period] ..........................._____%

         5.       Aggregate amount of Principal Receivables in the Trust:

                  Beginning of Due Period ................................$_____
                  Average ................................................$_____
                  End of Due Period ......................................$_____

         6.       Delinquencies (Aggregate outstanding balances in the Accounts
                  that were delinquent by the time periods listed below as of
                  the close of business of the month preceding the Distribution
                  Date, as a percentage of aggregate Receivables as of the last
                  day of the Due Period) 1/ :

                  Current ................................................_____%
                  5-34 days delinquent ..................................._____%
                  35-64 days delinquent .................................._____%
                  65-94 days delinquent .................................._____%
                  95-124 days delinquent ................................._____%
                  125-154 days delinquent ................................_____%
                  155-184 days delinquent ................................_____%

B.   Information Regarding Group One (Percentage Basis)

         1.       Group One weighted average Certificate
                  Rate ..................................................._____%

         2.       Weighted average rate of Group One Investor
                  Monthly Fees ..........................................._____%

___________________________
      1/ To be delivered no later than the 15th day of each
calendar month.


<PAGE>

         3. Group One Surplus Finance Charge Collections / the Invested Amount
         as of the last day of the
                  prior Due Period ......................................._____%

         4.       Group One Required Surplus Finance Charge
                  Amount / the Invested Amount as of the last day
                  of the prior Due Period ................................_____%

         5.       Group One Surplus Finance Charge Collections
                  minus Group One Required Surplus Finance Charge
                  Amount / the Invested Amount as of the last day
                  of the prior Due Period ................................_____%


C.       Information Regarding Group One (Dollar Basis)

         1.       Group One Total Investor Collections ...................$_____

                  Group One Investor
                  Principal Collections ..................................$_____

                  Group One Investor Finance
              Charge Collections .........................................$_____

         2.       Group One Investor Default Amount ......................$_____

         3.       Group One Investor Monthly Interest ....................$_____

         4.       Group One Investor Monthly Fees ........................$_____

         5.       Group One Surplus Finance Charge
                  Collections ............................................$_____

         6.       Group One Required Surplus Finance Charge
                  Amount .................................................$_____

         7.       Group One Surplus Finance Charge Collections
                  minus Group One Required Surplus Finance Charge
                  Amount .................................................$_____

D.       Information Regarding Series 1998-1

         1.(a)  Class A Invested Amount ..................................$_____

           (b)  Class B Invested Amount ..................................$_____

         2.(a)  Class A Monthly Interest .................................$_____

           (b)  Class B Monthly Interest .................................$_____

         3.(a)  Balance in the Class A Interest
                    Funding Account ......................................$_____

           (b)  Balance in the Class B Interest
                    Funding Account  .....................................$_____


<PAGE>



         4.       Available Cash Collateral
                  Amount .................................................$_____

           % of Class B Invested
           Amount .........................................................____%

         5.(a)  Class A Investor Charge-offs .............................$_____

           (b)  Class B Investor Charge-offs .............................$_____

         6.  Required Amount .............................................$_____

         7.  Draw on Cash Collateral Account .............................$_____

         8.(a)  Class A Monthly Principal for the
                    Distribution Date 1/ .................................$_____

           (b)  Class B Monthly Principal for the
                    Distribution Date 2/  ................................$_____

         9.       Balance in the Class A Principal
                  Funding Account 1/ .....................................$_____


E.       Information regarding Additional Investor Certificates 3/

         1.       Additional Issuance Date................................ _____

         2.       Invested Amount of Additional Class A
                  Certificates............................................$_____

         3.       Invested Amount of Additional Class B
                  Certificates............................................$_____


F.       Information Regarding the Accumulation Period 4/

         1.       Date on which the Accumulation Period will
                  commence................................................ _____

         2.       Controlled Amortization Amount for each
                  Monthly Period

           (a)  [        ], 199[ ] Monthly Period.........................$_____


__________________
        2/ Applicable during the Accumulation Period and any
Early Amortization Period.
        3/ Applicable after issuance of Additional Investor
Certificates.
        4/ Applicable only if the Revolving Period has been
extended.

<PAGE>

           (b)  [        ], 199[ ] Monthly Period.........................$_____


G.       Information Regarding Distributions, Certificateholders
         and Charge-offs 5/

         1.(a)  The total amount of the distribution
                    to Class A Certificateholders on the
                    Payment Date .........................................$_____

           (b)  The total amount of the distribution
                    to Class B Certificateholders on the
                    Payment Date .........................................$_____

         2.(a)      The amount of the distribution set forth in item 1(a) above
                    in respect of
                    principal on the Class A Certificates ................$_____

           (b)  The amount of the distribution set forth
                    in item 1(b) above in respect of
                    principal on the Class B Certificates ................$_____

         3.(a)      The amount of the distribution set forth in item 1(a) above
                    in respect of
                    interest on the Class A Certificates .................$_____

           (b)  The amount of the distribution set forth
                    in item 1(b) above in respect of
                    interest on the Class B Certificates .................$_____

         4.(a)      The amount, if any, by which the outstanding principal
                    balance of the Class A Certificates exceeds the Class A
                    Invested Amount as of the end of the Record Date with
                    respect to the
                    Payment Date .........................................$_____

           (b)      The amount, if any, by which the outstanding principal
                    balance of the Class B Certificates exceeds the Class B
                    Invested Amount as of the end of the Record Date with
                    respect to the
                    Payment Date .........................................$_____


                                        CITIBANK (SOUTH DAKOTA), N.A.,
                                        Servicer,

                                        By:___________________________
                                           Name:
                                           Title:


______________________________
         5/ The following information, as applicable, is to be included
only on Payment Dates.


<PAGE>

                                                                       EXHIBIT D


                     FORM OF MONTHLY SERVICER'S CERTIFICATE


                          CITIBANK (SOUTH DAKOTA), N.A.
                     CITIBANK (NEVADA), NATIONAL ASSOCIATION



                       CITIBANK CREDIT CARD MASTER TRUST I
                                  SERIES 1998-1



                  The undersigned, a duly authorized representative of Citibank
(South Dakota), N.A., as Servicer ("Citibank (South Dakota)"), pursuant to the
Pooling and Servicing Agreement dated as of May 29, 1991 (as amended and
supplemented, the "Agreement"), as supplemented by the Series 1998-1 Supplement
(as amended and supplemented, the "Series Supplement"), among Citibank (South
Dakota), N.A., Seller and Servicer, Citibank (Nevada), National Association,
Seller, and Bankers Trust Company, as successor to Yasuda Bank and Trust Company
(U.S.A.), Trustee, does hereby certify as follows:

                  1. Capitalized terms used in this Certificate have their
         respective meanings as set forth in the Agreement or Series Supplement,
         as applicable.

                  2. Citibank (South Dakota) is, as of the date hereof, the
         Servicer under the Agreement.

                  3. The undersigned is a Servicing Officer.

                  4. This Certificate relates to the Distribution Date occurring
         on ________________________.

                  5. As of the date hereof, to the best knowledge of the
         undersigned, the Servicer has performed in all material respects all
         its obligations under the Agreement through the Due Period preceding
         such Distribution Date [or, if there has been a default in the
         performance of any such obligation, set forth in detail the (i) nature
         of such default, (ii) the action taken by the Sellers and Servicer, if
         any, to remedy such default and (iii) the current status of each such
         default; if applicable, insert "None"].

                  6. As of the date hereof, to the best knowledge of the
         undersigned, no Amortization Event has been


<PAGE>


                                                                               2


         deemed to have occurred on or prior to such Distribution Date.

                  7. As of the date hereof, to the best knowledge of the
         undersigned, no Lien has been placed on any of the Receivables other
         than pursuant to the Agreement (or, if there is a Lien, such Lien
         consists of____________).


           IN WITNESS WHEREOF, the undersigned has duly executed
and delivered this Certificate this      day of     ,     .


                                                 CITIBANK (SOUTH DAKOTA), N.A.,
                                                 Servicer,

                                                 By:_________________________
                                                    Name:
                                                    Title:




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