AMERICAN CENTURY TARGET MATURITIES TRUST
485BXT, 1999-01-08
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               SECURITIES AND EXCHANGE COMMISSION
                    Washington, D.C.   20549

                           FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933               [X]

     File No. 2-94608

     Pre-Effective Amendment No.                                      [ ]

     Post-Effective Amendment No. 30                                  [X]

                             and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940       [X]
     
     File No. 811-4165

     Amendment No. 32                                                 [X]

                        (Check appropriate box or boxes.)


                    AMERICAN CENTURY TARGET MATURITIES TRUST
       _________________________________________________________________
               (Exact Name of Registrant as Specified in Charter)


                     4500 Main Street, Kansas City, MO 64111
       _________________________________________________________________
               (Address of Principal Executive Offices) (Zip Code)


       Registrant's Telephone Number, including Area Code: (816) 531-5575


            William M. Lyons, 4500 Main Street, Kansas City, MO 64111
       _________________________________________________________________
                     (Name and Address of Agent for Service)

         Approximate Date of Proposed Public Offering: February 1, 1999

It is proposed that this filing will become effective (check
appropriate box)

     [ ] immediately upon filing pursuant to paragraph (b)
     [X] on February 1, 1999 pursuant to paragraph (b)
     [ ] 60 days after filing pursuant to paragraph (a)(1)
     [ ] on (date) pursuant to paragraph (a)(1)
     [ ] 75 days after filing pursuant to paragraph (a)(2)
     [ ] on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following box:

     [X] This post-effective amendment designates a new effective date for a 
         previously filed post-effective amendment.
<PAGE>
This  filing  is  being  made  to  extend  the  date  of  effectiveness  of  the
Registrant's  1933  Post-Effective  Amendment  No. 29 to February  1, 1999.  The
Post-Effective  Amendment originally  requested  effectiveness as of January 12,
1999.

The following documents are hereby incorporated by reference:

*    Prospectus for the Target Funds Investor Class dated February 1, 1999 filed
     pursuant   to  Rule   485(a)  on   November   13,   1998   (Accession   No.
     0000757928-98-000006).

*    Prospectus  for the Target Funds Advisor Class dated February 1, 1999 filed
     pursuant   to  Rule   485(a)  on   November   13,   1998   (Accession   No.
     0000757928-98-000006).

*    Statement of Additional  Information for the Target Funds dated February 1,
     1999 filed  pursuant  to Rule 485(a) on November  13, 1998  (Accession  No.
     0000757928-98-000006).

Registrant is extending  effectiveness of its Registration Statement in order to
incorporate comments provided to its manager by the staff of the Commission.
<PAGE>
AMERICAN CENTURY TARGET MATURITIES TRUST

1933 Act Post-Effective Amendment No. 30
1940 Act Amendment No. 32
- --------------------------------------------------------------------------------

PART C    OTHER INFORMATION

ITEM 23   EXHIBITS (all  exhibits  not filed  herewith  are  being  incorporated
          herein by reference).

          (a)  (1) Agreement and  Declaration of Trust dated May 31, 1995 (filed
               electronically as Exhibit 1(b) to Post-Effective Amendment No. 24
               to the  Registration  Statement on November  29,  1995,  File No.
               2-94608).

               (2) Amendment to the  Declaration of Trust dated October 21, 1996
               (filed  electronically as Exhibit 1 to  Post-Effective  Amendment
               No. 27 to the Registration Statement on August 28, 1997, File No.
               2-94608).

               (3)  Amendment to the  Declaration  of Trust dated August 1, 1997
               (filed  electronically as Exhibit 1 to  Post-Effective  Amendment
               No. 27 to the Registration Statement on August 28, 1997, File No.
               2-94608).

          (b)  Amended  and   Restated   Bylaws,   dated  May  17,  1995  (filed
               electronically as Exhibit 2 to Post-Effective Amendment No. 24 to
               the  Registration  Statement  on  November  29,  1995,  File  No.
               2-94608).

          (c)  Registrant hereby incorporates by reference,  as though set forth
               fully herein,  Article III,  Article VIII,  Article X, Article XI
               and Article XII of Registrant's  Declaration of Trust , appearing
               as Exhibit (1)(b) to Post-Effective  Amendment No. 24 and Exhibit
               (1)  to  Post-Effective  Amendment  No.  27 to  the  Registration
               Statements  on  Form  N-1A of the  Registrant;  and  Article  II,
               Article VII and Article VIII of Registrant's Amended and Restated
               Bylaws,  appearing as Exhibit (b) to Post-Effective Amendment No.
               24 to the Registration Statement on Form N-1A of the Registrant.

          (d)  (1)  Investor  Class  Investment   Management  Agreement  between
               American  Century Target  Maturities  Trust and American  Century
               Investment   Management,   Inc.,  dated  August  1,  1997  (filed
               electronically as Exhibit 5 of Post-Effective Amendment No. 33 to
               the Registration  Statement of American Century Government Income
               Trust on July 31, 1997, File No. 2-99222).

               (2)  Advisor  Class  Investment   Management   Agreement  between
               American  Century  Target  Maturities  Trust,   American  Century
               Government  Income Trust,  American  Century  International  Bond
               Funds,  and American  Century  Quantitative  Equity Funds,  dated
               August   1,  1997   (filed   electronically   as   Exhibit  5  of
               Post-Effective  Amendment No. 27 to the Registration Statement on
               August 28, 1997, File No. 2-94608).

          (e)  (1)  Distribution   Agreement  between  American  Century  Target
               Maturities Trust and Funds  Distributor,  Inc., dated January 15,
               1998  (filed   electronically  as  Exhibit  6  to  Post-Effective
               Amendment  No. 28 to the  Registration  Statement  on January 30,
               1998, File No. 2-94608).

               (2)  Amendment  No.  1  to  the  Distribution  Agreement  between
               American Century Target  Maturities Trust and Funds  Distributor,
               Inc., dated June 1, 1998 (filed  electronically  as Exhibit 6b to
               Post-Effective  Amendment No. 11 to the Registration Statement of
               American Century Capital Portfolios,  Inc. on June 26, 1998, File
               No. 33-64872).

               (3) Amendment No. 2 to Distribution  Agreement  between  American
               Century  Target  Maturities  Trust and Funds  Distributor,  Inc.,
               dated December 1, 1998 (filed electronically as Exhibit (e)(3) to
               Post-Effective  Amendment No. 12 to the Registration Statement of
               American Century World Mutual Funds,  Inc., on November 13, 1998,
               File No. 33-39242).

               (4) Amendment No. 3 to Distribution  Agreement  between  American
               Century  Target  Maturities  Trust and Funds  Distributor,  Inc.,
               dated January 29, 1999 (filed electronically as Exhibit (e)(4) to
               Post-Effective  Amendment No. 28 to the Registration Statement of
               American  Century  California  Tax-Free and Municipal  Funds,  on
               December 28, 1998, File No. 2-82734).

          (f)  Not applicable.

          (g)  Custodian   Agreement   between  American   Century   Investments
               (including  American Century Target  Maturities  Trust),  and The
               Chase Manhattan Bank, dated August 9, 1996 (filed  electronically
               as  Exhibit  8  of   Post-Effective   Amendment  No.  31  to  the
               Registration  Statement  of American  Century  Government  Income
               Trust on February 7, 1997, File No. 2-99222).

          (h)  (1) Transfer Agency  Agreement  between  American  Century Target
               Maturities Trust and American Century Services Corporation, dated
               August   1,  1997   (filed   electronically   as   Exhibit  9  of
               Post-Effective  Amendment No. 33 to the Registration Statement of
               American Century  Government  Income Trust on July 31, 1997, File
               No. 2-99222).

               (2)  Amendment  to Transfer  Agency  Agreement  between  American
               Century Target  Maturities  Trust and American  Century  Services
               Corporation, dated June 29, 1998 (filed electronically as Exhibit
               9b  to  Post-Effective  Amendment  No.  23  to  the  Registration
               Statement of American Century  Quantitative  Equity Funds on June
               29, 1998, File No. 33-19589).

          (i)  Opinion and consent of counsel (filed  electronically  as Exhibit
               (i)  of  Post-Effective  Amendment  No.  29 to  the  Registration
               Statement on November 13, 1998, File No. 2-94608).

          (j)  (1) Consent of PricewaterhouseCoopers, LLP, independent auditors,
               to be filed by amendment.

               (2) Consent of KPMG Peat Marwick,  LLP, independent  auditors, to
               be filed by amendment.

               (3) Power of Attorney dated December 18, 1998 is included herein.

          (k)  Not applicable.

          (l)  Not applicable.

          (m)  (1) Master Distribution and Shareholder Services Plan of American
               Century Government Income Trust,  American Century  International
               Bond Fund,  American Century Target Maturities Trust and American
               Century Quantitative Equity Funds (Advisor Class) dated August 1,
               1997  (filed  electronically  as  Exhibit  15  to  Post-Effective
               Amendment No. 27 to the  Registration  Statement  filed on August
               28, 1997, filed No. 2-94608).

               (2)  Amendment  No.  1 to  Master  Distribution  and  Shareholder
               Services  Plan  of  American  Century  Target   Maturities  Trust
               (Advisor  Class)  dated June 29,  1998 (filed  electronically  as
               Exhibit  15b  to  Post-Effective  Amendment  No.  23 of  American
               Century  Quantitative  Equity Funds filed on June 29, 1998,  File
               No. 33-19589).

          (n)  (1) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2000 is included herein.

               (2) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2005 is included herein.

               (3) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2010 is included herein.

               (4) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2015 is included herein.

               (5) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2020 is included herein.

               (6) Financial Data Schedule for American  Century - Benham Target
               Maturities Trust: 2025 is included herein.

          (o)  (1) Multiple Class Plan of American Century  California  Tax-Free
               and Municipal Funds,  American Century  Government  Income Trust,
               American  Century  International  Bond  Funds,  American  Century
               Investment  Trust,  American Century  Municipal  Trust,  American
               Century Target Maturities Trust and American Century Quantitative
               Equity  Funds  dated  August 1,  1997  (filed  electronically  as
               Exhibit 18 of Post-Effective Amendment No. 27 to the Registration
               Statement on August 28, 1997, File No. 2-94608).

               (2) Amendment to Multiple  Class Plan of American  Century Target
               Maturities  Trust dated June 29, 1998  (filed  electronically  as
               Exhibit  (o)(2)  to  Post-Effective   Amendment  No.  23  to  the
               Registration  Statement of American Century  Quantitative  Equity
               Funds on June 29, 1998, File No. 33-19589).

Item 24. Persons Controlled by or Under Common Control with Registrant.

Not applicable.


Item 25. Indemnification.

As stated in Article VII,  Section 3 of the  Declaration of Trust,  incorporated
herein by reference to Exhibit 1 to the  Registration  Statement,  "The Trustees
shall be entitled  and  empowered  to the  fullest  extent  permitted  by law to
purchase  insurance  for and to  provide  by  resolution  or in the  Bylaws  for
indemnification  out  of  Trust  assets  for  liability  and  for  all  expenses
reasonably  incurred  or paid or  expected to be paid by a Trustee or officer in
connection  with any  claim,  action,  suit,  or  proceeding  in which he or she
becomes  involved by virtue of his or her capacity or former  capacity  with the
Trust.  The  provisions,  including any  exceptions and  limitations  concerning
indemnification,  may be set forth in detail  in the  Bylaws or in a  resolution
adopted by the Board of Trustees."

Registrant hereby  incorporates by reference,  as though set forth fully herein,
Article  VI  of  the  Registrant's  Bylaws,  amended  on  May  17,  1995  (filed
electronically  as  Exhibit  2(b)  of  Post-Effective  Amendment  No.  24 to the
Registration Statement on November 29, 1995, File No. 2-94608).


Item 26. Business and Other Connections of Investment Advisor.

American Century Investment Management, Inc., the investment advisor, is engaged
in the business of managing  investments  for registered  investment  companies,
deferred compensation plans and other institutional investors.


Item 27. Principal Underwriters.

         (a)  Funds  Distributor,  Inc. (the  "Distributor")  acts  as principal
              underwriter for the following investment companies.

          American Century California Tax-Free and Municipal Funds
          American Century Capital Portfolios, Inc.
          American Century Government Income Trust
          American Century International Bond Funds
          American Century Investment Trust                  
          American Century Municipal Trust                   
          American Century Mutual Funds, Inc.                
          American Century Premium Reserves, Inc.            
          American Century Quantitative Equity Funds         
          American Century Strategic Asset Allocations, Inc. 
          American Century Target Maturities Trust           
          American Century Variable Portfolios, Inc.         
          American Century World Mutual Funds, Inc.          
          BJB Investment Funds                               
          The Brinson Funds                                  
          Dresdner RCM Capital Funds, Inc.                   
          Dresdner RCM Equity Funds, Inc.                    
          Founders Funds, Inc.                               
          Harris Insight Funds Trust                         
          HT Insight Funds, Inc. d/b/a Harris Insight Funds  
          J.P. Morgan Institutional Funds                    
          J.P. Morgan Funds                                  
          JPM Series Trust                                   
          JPM Series Trust II                                
          LaSalle Partners Funds, Inc.
          Kobrick - Cendant Investment Trust                       
          Monetta Fund, Inc.                                 
          Monetta Trust                                      
          The Montgomery Funds I                             
          The Montgomery Funds II                            
          The Munder Framlington Funds Trust            
          The Munder Funds Trust                        
          The Munder Funds, Inc.                        
          National Investors Cash Management Fund, Inc. 
          Orbitex Group of Funds                        
          SG Cowen Funds, Inc.                          
          SG Cowen Income + Growth Fund, Inc.           
          SG Cowen Standby Reserve Fund, Inc.           
          SG Cowen Standby Tax-Exempt Reserve Fund, Inc.
          SG Cowen Series Funds, Inc.                   
          St. Clair Funds, Inc.                         
          The Skyline Funds                             
          Waterhouse Investors Family of Funds, Inc.    
          WEBS Index Fund, Inc.                         

          The  Distributor  is  registered  with  the  Securities  and  Exchange
          Commission  as  a  broker-dealer  and  is a  member  of  the  National
          Association of Securities  Dealers.  The  Distributor is located at 60
          State Street, Suite 1300, Boston, Massachusetts 02109. The Distributor
          is an indirect wholly-owned  subsidiary of Boston Institutional Group,
          Inc., a holding company all of whose  outstanding  shares are owned by
          key employees.

         (b)  The following  is a list of the executive officers,  directors and
              partners of the Distributor:

<TABLE>
Name and Principal Business          Positions and Offices with          Positions and Offices with
Address*                             Underwriter                         Registrant
<S>                                  <C>                                <C>
Marie E. Connolly                    Director, President and Chief       None
                                     Executive Officer

George A. Rio                        Executive Vice President            President, Principal Executive
                                                                         and Principal Financial Officer

Donald R. Roberson                   Executive Vice President            None

William S. Nichols                   Executive Vice President            None

Margaret W. Chambers                 Senior Vice President, General      None
                                     Counsel, Chief Compliance
                                     Officer, Secretary and Clerk
Michael S. Petrucelli                Senior Vice President               None

Joseph F. Tower, III                 Director, Senior Vice President,    None
                                     Treasurer and Chief Financial
                                     Officer

Paula R. David                       Senior Vice President               None

Allen B. Closser                     Senior Vice President               None

Bernard A. Whalen                    Senior Vice President               None

William J. Nutt                      Chairman and Director               None
- --------------------
* All addresses are 60 State Street, Suite 1300, Boston, Massachusetts 02109
</TABLE>
         (c)  Not applicable.


Item 28. Location of Accounts and Records.

All  accounts,  books and other  documents  required to be maintained by Section
31(a)  of the  1940  Act,  and  the  rules  promulgated  thereunder,  are in the
possession of Registrant,  American  Century  Services  Corporation and American
Century  Investment  Management,  Inc., all located at 4500 Main Street,  Kansas
City, Missouri 64111.


Item 29. Management Services.

Not applicable.


Item 30. Undertakings.

Not applicable.
<PAGE>
                                   SIGNATURES

Pursuant to the  requirements  of the  Securities Act of 1933 and the Investment
Company Act of 1940, the Registrant certifies that it meets all the requirements
for  effectiveness  of this 1933  Post-Effective  Amendment  No. 30 and 1940 Act
Amendment  No.  32  to  its  Registration  Statement  pursuant  to  Rule  485(b)
promogulated  under the Securities Act of 1933, as amended,  and has duly caused
this Post-Effective Amendment No. 30/Amendment No. 32 to be signed on its behalf
by the undersigned,  thereunto duly authorized,  in the City of Kansas City, and
State of Missouri, on the 8th day of January, 1999.

                     AMERICAN CENTURY TARGET MATURITIES TRUST


                     By:  /*/George A. Rio
                          George A. Rio
                          President and Principal Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this  Post-Effective
Amendment No. 30/Amendment No. 32 has been signed below by the following persons
in the capacities and on the dates indicated.

<TABLE>
<CAPTION>
                                                                                   Date
<S>                                  <C>                                           <C>
*                                    President, Principal Executive and            January 8, 1999
- ---------------------------------    Principal Financial Officer
George A. Rio

*                                    Vice President and Treasurer                  January 8, 1999
- ---------------------------------
Maryanne Roepke

*                                    Chairman of the Board and Trustee             January 8, 1999
- ---------------------------------    
James E. Stowers III

*                                    Trustee                                       January 8, 1999
- ---------------------------------    
William M. Lyons

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Albert A. Eisenstat

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Ronald J. Gilson

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Myron S. Scholes

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Kenneth E. Scott

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Isaac Stein

*                                    Trustee                                       January 8, 1999
- ---------------------------------
Jeanne D. Wohlers

</TABLE>
/s/Charles C.S. Park
*by Charles C.S.  Park,  Attorney in Fact (pursuant to a Power of Attorney dated
December 18, 1998).


EXHIBIT     DESCRIPTION

EX-99.a1    Agreement  and  Declaration  of Trust dated May 31, 1995 (filed as a
            part  of  Post-Effective   Amendment  No.  24  to  the  Registration
            Statement on Form N-1A of the Registrant, File No. 2-94608, filed on
            November 29, 1995 and incorporated herein by reference).

EX-99.a2    Amendment to the  Declaration of Trust dated October 21, 1996 (filed
            as a part of  Post-Effective  Amendment  No. 27 to the  Registration
            Statement on Form N-1A of the Registrant, File No. 2-94608, filed on
            August 28, 1997 and incorporated herein by reference).

EX-99.a3    Amendment to the Declaration of Trust dated August 1, 1997 (filed as
            a part  of  Post-Effective  Amendment  No.  27 to  the  Registration
            Statement on Form N-1A of the Registrant, File No. 2-94608, filed on
            August 28, 1997 and incorporated herein by reference).

EX-99.b     Amended and Restated Bylaws,  dated May 17, 1995 (filed as a part of
            Post-Effective  Amendment  No. 24 to the  Registration  Statement on
            Form N-1A of the Registrant, File No. 2-94608, filed on November 29,
            1995 and incorporated herein by reference).

EX-99.d1    Investor Class  Investment  Management  Agreement  between  American
            Century  Target  Maturities  Trust and American  Century  Investment
            Management,  Inc.,  dated  August  1,  1997  (filed  as  a  part  of
            Post-Effective  Amendment  No. 33 to the  Registration  Statement on
            Form N-1A of American  Century  Government  Income  Trust,  File No.
            2-99222, filed July 31, 1997 and incorporated herein by reference).

EX-99.d2    Advisor  Class  Investment  Management  Agreement  between  American
            Century Target Maturities Trust,  American Century Government Income
            Trust,  American  Century  International  Bond Funds,  and  American
            Century  Quantitative Equity Funds, dated August 1, 1997 (filed as a
            part  of  Post-Effective   Amendment  No.  27  to  the  Registration
            Statement on Form N-1A of the Registrant, File No. 2-94608, filed on
            August 28, 1997 and incorporated herein by reference).

EX-99.e1    Distribution  Agreement  between American Century Target  Maturities
            Trust and Funds Distributor,  Inc., dated January 15, 1998 (filed as
            a part  of  Post-Effective  Amendment  No.  28 to  the  Registration
            Statement on Form N-1A of the Registrant, File No. 2-94608, filed on
            January 30, 1998 and incorporated herein by reference).

EX-99.e2    Amendment  No.  1 to the  Distribution  Agreement  between  American
            Century Target Maturities Trust and Funds  Distributor,  Inc., dated
            June 1, 1998 (filed as a part of Post-Effective  Amendment No. 11 to
            the Registration  Statement on Form N-1A of American Century Capital
            Portfolios,  Inc.,  File No.  33-64872,  filed on June 26,  1998 and
            incorporated herein by reference).

EX-99.e3    Amendment No. 2 to Distribution  Agreement  between American Century
            Target  Maturities  Trust and Funds  Distributor,  Inc., dated as of
            December 1, 1998 (filed as a part of Post-Effective Amendment No. 12
            to the Registration Statement on Form N-1A of American Century World
            Mutual Funds,  Inc., File No. 33-39242,  filed on November 13, 1998,
            and incorporated herein by reference).

EX-99.e4    Amendment No. 3 to Distribution  Agreement  between American Century
            Target  Maturities  Trust and Funds  Distributor,  Inc., dated as of
            January 29, 1999 (filed as a part of Post-Effective Amendment No. 28
            to the  Registration  Statement  on Form  N-1A of  American  Century
            California Tax-Free and Municipal Funds, File No. 2-82734,  filed on
            December 28, 1998, and incorporated herein by reference).
  
EX-99.g     Custodian Agreement between American Century Investments  (including
            American Century Target Maturities  Trust),  and The Chase Manhattan
            Bank,  dated  August  9,  1996  (filed  as a part of  Post-Effective
            Amendment  No.  31 to the  Registration  Statement  on Form  N-1A of
            American Century  Government Income Trust,  File No. 2-99222,  filed
            February 7, 1997 and incorporated herein by reference).

EX-99.h1    Transfer Agency Agreement between American Century Target Maturities
            Trust and American  Century  Services  Corporation,  dated August 1,
            1997  (filed  as a part of  Post-Effective  Amendment  No. 33 to the
            Registration  Statement on Form N-1A of American Century  Government
            Income  Trust,  File  No.  2-99222,  filed  on  July  31,  1997  and
            incorporated herein by reference).

EX-99.h2    Amendment to Transfer  Agency  Agreement  between  American  Century
            Target  Maturities Trust and American  Century Services  Corporation
            dated June 29, 1998 (filed as a part of Post-Effective Amendment No.
            23 to the  Registration  Statement on Form N-1A of American  Century
            Quantitative  Equity  Funds,  File No.  33-19589,  filed on June 29,
            1998, and incorporated herein by reference).

EX-99.i     Opinion  and consent of counsel  (filed as a part of  Post-Effective
            Amendment No. 29 to the  Registration  Statement on Form N-1A of the
            Registrant,   File  No.  2-94608,  filed  on  August  28,  1997  and
            incorporated herein by reference).

EX-99.j1    Consent of PricewaterhouseCoopers,  LLP, independent auditors, to be
            filed by amendment.

EX-99.j2    Consent of KPMG Peat Marwick, LLP, independent auditors, to be filed
            by amendment.

EX-99.j3    Power of Attorney dated December 18, 1998.

EX-99.m1    Master  Distribution  and  Shareholder  Services  Plan  of  American
            Century Government Income Trust, American Century International Bond
            Fund,  American Century Target Maturities Trust and American Century
            Quantitative  Equity  Funds  (Advisor  Class)  dated  August 1, 1997
            (filed  as  a  part  of  Post-Effective  Amendment  No.  27  to  the
            Registration  Statement  on Form  N-1A of the  Registrant,  File No.
            2-94608,  filed on  August  28,  1997  and  incorporated  herein  by
            reference).

EX-99.m2    Amendment No. 1 to Master Distribution and Shareholder Services Plan
            of American  Century Target  Maturities  Trust (Advisor Class) dated
            June 29, 1998 (filed as a part of Post-Effective Amendment No. 23 to
            the  Registration   Statement  on  Form  N-1A  of  American  Century
            Quantitative Equity Funds, File No. 33-19589, filed on June 29, 1998
            and incorporated herein by reference).

EX-99.o1    Multiple  Class Plan of American  Century  California  Tax-Free  and
            Municipal Funds,  American Century Government Income Trust, American
            Century International Bond Funds, American Century Investment Trust,
            American Century Municipal Trust, American Century Target Maturities
            Trust and American Century Quantitative Equity Funds dated August 1,
            1997  (filed  as a part of  Post-Effective  Amendment  No. 27 of the
            Registration  Statement  on Form  N-1A of the  Registrant,  File No.
            2-94608,  filed on  August  28,  1997  and  incorporated  herein  by
            reference).

EX-99.o2    Amendment  to  Multiple  Class  Plan  of  American   Century  Target
            Maturities   Trust   dated  June  29,  1998  (filed  as  a  part  of
            Post-Effective  Amendment  No. 23 to the  Registration  Statement on
            Form N-1A of American Century  Quantitative  Equity Funds,  File No.
            33-19589,  filed  on  June  29,  1998  and  incorporated  herein  by
            reference).

EX-27.5.1   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2000

EX-27.5.2   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2005 

EX-27.5.3   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2010 

EX-27.5.4   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2015 

EX-27.5.5   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2020 

EX-27.5.6   Financial  Data  Schedule  for  American  Century  -  Benham  Target
            Maturities Trust: 2025 

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned,  American Century
Target Maturities Trust,  hereinafter  called the "Trust",  and certain trustees
and officers of the Trust, do hereby constitute and appoint George A. Rio, David
C. Tucker,  Douglas A. Paul, Charles A. Etherington,  and Charles C.S. Park, and
each of them  individually,  their true and lawful  attorneys and agents to take
any and all action and execute any and all instruments  which said attorneys and
agents may deem  necessary  or  advisable to enable the Trust to comply with the
Securities  Act of 1933 and/or the  Investment  Company Act of 1940, as amended,
and any rules,  regulations,  orders, or other requirements of the United States
Securities  and  Exchange   Commission   thereunder,   in  connection  with  the
registration  under the Securities Act of 1933 and/or the Investment Company Act
of 1940,  as amended,  including  specifically,  but without  limitation  of the
foregoing,  power and  authority to sign the name of the Trust in its behalf and
to affix its seal,  and to sign the names of each of such  trustees and officers
in  their  capacities  as  indicated,  to any  amendment  or  supplement  to the
Registration  Statement filed with the Securities and Exchange  Commission under
the  Securities  Act of 1933  and/or  the  Investment  Company  Act of 1940,  as
amended,  and to any  instruments or documents filed or to be filed as a part of
or in connection with such Registration  Statement;  and each of the undersigned
hereby  ratifies  and confirms  all that said  attorneys  and agents shall do or
cause to be done by virtue hereof.

         IN WITNESS  WHEREOF,  the Trust has caused this Power to be executed by
its duly authorized officers on this the 18th day of December, 1998.

                                      AMERICAN CENTURY TARGET MATURITIES TRUST


                                      By: /s/ George A. Rio
                                          George A. Rio, President


                               SIGNATURE AND TITLE


/s/ George A. Rio                                        /s/ Ronald J. Gilson
George A. Rio                                            Ronald J. Gilson
President, Principal Executive and Principal             Trustee
Financial Officer

/s/ Maryanne Roepke                                      /s/ Myron S. Scholes
Maryanne Roepke                                          Myron S. Scholes
Vice President and Treasurer                             Trustee


/s/ James E. Stowers, III                                /s/ Kenneth E. Scott
James E. Stowers, III                                    Kenneth E. Scott
Trustee                                                  Trustee


/s/ William M. Lyons                                     /s/ Isaac Stein
William M. Lyons                                         Isaac Stein
Trustee                                                  Trustee


/s/ Albert A. Eisenstat                                  /s/ Jeanne D. Wohlers
Albert A. Eisenstat                                      Jeanne D. Wohlers
Trustee                                                  Trustee


Attest:

By: /s/ Douglas A. Paul
       Douglas A. Paul, Secretary

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 2
   <NAME> BENHAM TARGET MATURITIES - 2000 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                                 YEAR
<FISCAL-YEAR-END>                             SEP-30-1998
<PERIOD-END>                                  SEP-30-1998              <F1>
<INVESTMENTS-AT-COST>                                     230,516,406
<INVESTMENTS-AT-VALUE>                                    238,739,903
<RECEIVABLES>                                                       0
<ASSETS-OTHER>                                                584,484
<OTHER-ITEMS-ASSETS>                                                0
<TOTAL-ASSETS>                                            239,324,387
<PAYABLE-FOR-SECURITIES>                                            0
<SENIOR-LONG-TERM-DEBT>                                             0
<OTHER-ITEMS-LIABILITIES>                                   1,735,889
<TOTAL-LIABILITIES>                                         1,735,889
<SENIOR-EQUITY>                                                     0
<PAID-IN-CAPITAL-COMMON>                                  216,542,478
<SHARES-COMMON-STOCK>                                       2,533,390
<SHARES-COMMON-PRIOR>                                       3,349,052
<ACCUMULATED-NII-CURRENT>                                  10,075,324
<OVERDISTRIBUTION-NII>                                              0
<ACCUMULATED-NET-GAINS>                                     2,747,199
<OVERDISTRIBUTION-GAINS>                                            0
<ACCUM-APPREC-OR-DEPREC>                                    8,223,497
<NET-ASSETS>                                              237,588,498
<DIVIDEND-INCOME>                                                   0
<INTEREST-INCOME>                                          15,205,216
<OTHER-INCOME>                                                      0
<EXPENSES-NET>                                              1,420,550
<NET-INVESTMENT-INCOME>                                    13,784,666
<REALIZED-GAINS-CURRENT>                                    6,149,330
<APPREC-INCREASE-CURRENT>                                     679,135
<NET-CHANGE-FROM-OPS>                                      20,613,131
<EQUALIZATION>                                                      0
<DISTRIBUTIONS-OF-INCOME>                                  15,765,056
<DISTRIBUTIONS-OF-GAINS>                                            0
<DISTRIBUTIONS-OTHER>                                               0
<NUMBER-OF-SHARES-SOLD>                                       645,063
<NUMBER-OF-SHARES-REDEEMED>                                 1,189,038
<SHARES-REINVESTED>                                           191,104
<NET-CHANGE-IN-ASSETS>                                   (10,788,636)
<ACCUMULATED-NII-PRIOR>                                             0
<ACCUMULATED-GAINS-PRIOR>                                 (4,592,691)
<OVERDISTRIB-NII-PRIOR>                                             0
<OVERDIST-NET-GAINS-PRIOR>                                          0
<GROSS-ADVISORY-FEES>                                       1,410,866
<INTEREST-EXPENSE>                                                  0
<GROSS-EXPENSE>                                             1,420,550
<AVERAGE-NET-ASSETS>                                      239,827,115
<PER-SHARE-NAV-BEGIN>                                           86.05  <F2>
<PER-SHARE-NII>                                                  5.13  <F2>
<PER-SHARE-GAIN-APPREC>                                          2.60  <F2>
<PER-SHARE-DIVIDEND>                                             5.64  <F2>
<PER-SHARE-DISTRIBUTIONS>                                        0.00
<RETURNS-OF-CAPITAL>                                             0.00
<PER-SHARE-NAV-END>                                             93.78  <F2>
<EXPENSE-RATIO>                                                  0.59  <F2>
<AVG-DEBT-OUTSTANDING>                                              0
<AVG-DEBT-PER-SHARE>                                             0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 3
   <NAME> BENHAM TARGET MATURITIES - 2005 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                                  YEAR
<FISCAL-YEAR-END>                              SEP-30-1998
<PERIOD-END>                                   SEP-30-1998       <F1>
<INVESTMENTS-AT-COST>                               461,237,944
<INVESTMENTS-AT-VALUE>                              522,621,174
<RECEIVABLES>                                                 0
<ASSETS-OTHER>                                       12,567,939
<OTHER-ITEMS-ASSETS>                                          0
<TOTAL-ASSETS>                                      535,189,113
<PAYABLE-FOR-SECURITIES>                                      0
<SENIOR-LONG-TERM-DEBT>                                       0
<OTHER-ITEMS-LIABILITIES>                             1,103,003
<TOTAL-LIABILITIES>                                   1,103,003
<SENIOR-EQUITY>                                               0
<PAID-IN-CAPITAL-COMMON>                            534,086,110
<SHARES-COMMON-STOCK>                                 6,961,639
<SHARES-COMMON-PRIOR>                                 4,130,406
<ACCUMULATED-NII-CURRENT>                            16,898,403
<OVERDISTRIBUTION-NII>                                        0
<ACCUMULATED-NET-GAINS>                               5,127,099
<OVERDISTRIBUTION-GAINS>                                      0
<ACCUM-APPREC-OR-DEPREC>                             61,383,230
<NET-ASSETS>                                        534,086,110
<DIVIDEND-INCOME>                                             0
<INTEREST-INCOME>                                    23,436,080
<OTHER-INCOME>                                                0
<EXPENSES-NET>                                        2,258,272
<NET-INVESTMENT-INCOME>                              21,177,808
<REALIZED-GAINS-CURRENT>                              5,444,663
<APPREC-INCREASE-CURRENT>                            42,618,545
<NET-CHANGE-FROM-OPS>                                69,241,016
<EQUALIZATION>                                                0
<DISTRIBUTIONS-OF-INCOME>                            15,987,498
<DISTRIBUTIONS-OF-GAINS>                              1,217,264
<DISTRIBUTIONS-OTHER>                                         0
<NUMBER-OF-SHARES-SOLD>                               4,722,020
<NUMBER-OF-SHARES-REDEEMED>                           2,395,346
<SHARES-REINVESTED>                                     270,807
<NET-CHANGE-IN-ASSETS>                              252,408,969
<ACCUMULATED-NII-PRIOR>                                       0
<ACCUMULATED-GAINS-PRIOR>                             1,315,502
<OVERDISTRIB-NII-PRIOR>                                       0
<OVERDIST-NET-GAINS-PRIOR>                                    0
<GROSS-ADVISORY-FEES>                                 2,246,858
<INTEREST-EXPENSE>                                            0
<GROSS-EXPENSE>                                       2,258,272
<AVERAGE-NET-ASSETS>                                382,708,125
<PER-SHARE-NAV-BEGIN>                                     64.54  <F2>
<PER-SHARE-NII>                                            3.84  <F2>
<PER-SHARE-GAIN-APPREC>                                    8.34  <F2>
<PER-SHARE-DIVIDEND>                                       3.61  <F2>
<PER-SHARE-DISTRIBUTIONS>                                  0.27  <F2>
<RETURNS-OF-CAPITAL>                                       0.00
<PER-SHARE-NAV-END>                                       76.72  <F2>
<EXPENSE-RATIO>                                            0.59  <F2>
<AVG-DEBT-OUTSTANDING>                                        0
<AVG-DEBT-PER-SHARE>                                       0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 4
   <NAME> BENHAM TARGET MATURITIES - 2010 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                                   YEAR
<FISCAL-YEAR-END>                               SEP-30-1998
<PERIOD-END>                                    SEP-30-1998
<INVESTMENTS-AT-COST>                                          235,163,514
<INVESTMENTS-AT-VALUE>                                         281,100,203
<RECEIVABLES>                                                            0
<ASSETS-OTHER>                                                   5,814,617
<OTHER-ITEMS-ASSETS>                                                     0
<TOTAL-ASSETS>                                                 286,914,820
<PAYABLE-FOR-SECURITIES>                                                 0
<SENIOR-LONG-TERM-DEBT>                                                  0
<OTHER-ITEMS-LIABILITIES>                                        3,086,476
<TOTAL-LIABILITIES>                                              3,086,476
<SENIOR-EQUITY>                                                          0
<PAID-IN-CAPITAL-COMMON>                                       227,800,198
<SHARES-COMMON-STOCK>                                            4,579,373
<SHARES-COMMON-PRIOR>                                            2,616,128
<ACCUMULATED-NII-CURRENT>                                        8,023,524
<OVERDISTRIBUTION-NII>                                                   0
<ACCUMULATED-NET-GAINS>                                          2,067,933
<OVERDISTRIBUTION-GAINS>                                                 0
<ACCUM-APPREC-OR-DEPREC>                                        45,936,689
<NET-ASSETS>                                                   283,828,344
<DIVIDEND-INCOME>                                                        0
<INTEREST-INCOME>                                               11,127,377
<OTHER-INCOME>                                                           0
<EXPENSES-NET>                                                   1,101,180
<NET-INVESTMENT-INCOME>                                         10,026,197
<REALIZED-GAINS-CURRENT>                                         2,154,470
<APPREC-INCREASE-CURRENT>                                       34,621,133
<NET-CHANGE-FROM-OPS>                                           46,801,800
<EQUALIZATION>                                                           0
<DISTRIBUTIONS-OF-INCOME>                                        7,102,391
<DISTRIBUTIONS-OF-GAINS>                                           850,424
<DISTRIBUTIONS-OTHER>                                                    0
<NUMBER-OF-SHARES-SOLD>                                          4,025,597
<NUMBER-OF-SHARES-REDEEMED>                                      2,145,135
<SHARES-REINVESTED>                                                159,789
<NET-CHANGE-IN-ASSETS>                                         159,016,515
<ACCUMULATED-NII-PRIOR>                                          5,195,418
<ACCUMULATED-GAINS-PRIOR>                                        2,583,986
<OVERDISTRIB-NII-PRIOR>                                                  0
<OVERDIST-NET-GAINS-PRIOR>                                               0
<GROSS-ADVISORY-FEES>                                            1,092,458
<INTEREST-EXPENSE>                                                       0
<GROSS-EXPENSE>                                                  1,101,180
<AVERAGE-NET-ASSETS>                                           186,094,779
<PER-SHARE-NAV-BEGIN>                                                49.16
<PER-SHARE-NII>                                                       2.94
<PER-SHARE-GAIN-APPREC>                                               9.88
<PER-SHARE-DIVIDEND>                                                  2.46
<PER-SHARE-DISTRIBUTIONS>                                             0.29
<RETURNS-OF-CAPITAL>                                                  0.00
<PER-SHARE-NAV-END>                                                  61.98
<EXPENSE-RATIO>                                                       0.59
<AVG-DEBT-OUTSTANDING>                                                   0
<AVG-DEBT-PER-SHARE>                                                  0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 5
   <NAME> BENHAM TARGET MATURITIES - 2015 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                               YEAR
<FISCAL-YEAR-END>                           SEP-30-1998
<PERIOD-END>                                SEP-30-1998
<INVESTMENTS-AT-COST>                                   109,651,361
<INVESTMENTS-AT-VALUE>                                  169,450,389
<RECEIVABLES>                                                     0
<ASSETS-OTHER>                                            1,312,614
<OTHER-ITEMS-ASSETS>                                              0
<TOTAL-ASSETS>                                          170,763,003
<PAYABLE-FOR-SECURITIES>                                          0
<SENIOR-LONG-TERM-DEBT>                                           0
<OTHER-ITEMS-LIABILITIES>                                   681,756
<TOTAL-LIABILITIES>                                         681,756
<SENIOR-EQUITY>                                                   0
<PAID-IN-CAPITAL-COMMON>                                104,510,486
<SHARES-COMMON-STOCK>                                     3,410,207
<SHARES-COMMON-PRIOR>                                     3,618,424
<ACCUMULATED-NII-CURRENT>                                 5,500,951
<OVERDISTRIBUTION-NII>                                            0
<ACCUMULATED-NET-GAINS>                                     270,782
<OVERDISTRIBUTION-GAINS>                                          0
<ACCUM-APPREC-OR-DEPREC>                                 59,799,028
<NET-ASSETS>                                            170,081,247
<DIVIDEND-INCOME>                                                 0
<INTEREST-INCOME>                                         7,985,961
<OTHER-INCOME>                                                    0
<EXPENSES-NET>                                              853,280
<NET-INVESTMENT-INCOME>                                   7,132,681
<REALIZED-GAINS-CURRENT>                                    298,681
<APPREC-INCREASE-CURRENT>                                29,541,335
<NET-CHANGE-FROM-OPS>                                    36,972,697
<EQUALIZATION>                                                    0
<DISTRIBUTIONS-OF-INCOME>                                 6,501,208
<DISTRIBUTIONS-OF-GAINS>                                  4,326,524
<DISTRIBUTIONS-OTHER>                                             0
<NUMBER-OF-SHARES-SOLD>                                   2,651,059
<NUMBER-OF-SHARES-REDEEMED>                               2,519,163
<SHARES-REINVESTED>                                         281,652
<NET-CHANGE-IN-ASSETS>                                   55,181,678
<ACCUMULATED-NII-PRIOR>                                   5,247,463
<ACCUMULATED-GAINS-PRIOR>                                   642,639
<OVERDISTRIB-NII-PRIOR>                                           0
<OVERDIST-NET-GAINS-PRIOR>                                        0
<GROSS-ADVISORY-FEES>                                       845,121
<INTEREST-EXPENSE>                                                0
<GROSS-EXPENSE>                                             853,280
<AVERAGE-NET-ASSETS>                                    143,892,968
<PER-SHARE-NAV-BEGIN>                                         38.34
<PER-SHARE-NII>                                                2.17
<PER-SHARE-GAIN-APPREC>                                        9.36
<PER-SHARE-DIVIDEND>                                           2.11
<PER-SHARE-DISTRIBUTIONS>                                      1.40
<RETURNS-OF-CAPITAL>                                           0.00
<PER-SHARE-NAV-END>                                           49.87
<EXPENSE-RATIO>                                                0.59
<AVG-DEBT-OUTSTANDING>                                            0
<AVG-DEBT-PER-SHARE>                                           0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 6
   <NAME> BENHAM TARGET MATURITIES - 2020 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                                  YEAR
<FISCAL-YEAR-END>                              SEP-30-1998
<PERIOD-END>                                   SEP-30-1998
<INVESTMENTS-AT-COST>                                      301,124,307
<INVESTMENTS-AT-VALUE>                                     487,013,557
<RECEIVABLES>                                                        0
<ASSETS-OTHER>                                               2,351,356
<OTHER-ITEMS-ASSETS>                                                 0
<TOTAL-ASSETS>                                             489,364,923
<PAYABLE-FOR-SECURITIES>                                             0
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                    3,313,152
<TOTAL-LIABILITIES>                                          3,313,152
<SENIOR-EQUITY>                                                      0
<PAID-IN-CAPITAL-COMMON>                                   228,403,297
<SHARES-COMMON-STOCK>                                       13,152,689
<SHARES-COMMON-PRIOR>                                       42,102,669
<ACCUMULATED-NII-CURRENT>                                   19,544,059
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                     52,215,155
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                   185,889,260
<NET-ASSETS>                                               486,051,771
<DIVIDEND-INCOME>                                                    0
<INTEREST-INCOME>                                           30,415,786
<OTHER-INCOME>                                                 105,570
<EXPENSES-NET>                                               3,324,484
<NET-INVESTMENT-INCOME>                                     27,196,872
<REALIZED-GAINS-CURRENT>                                    55,277,618
<APPREC-INCREASE-CURRENT>                                   86,449,383
<NET-CHANGE-FROM-OPS>                                      168,923,873
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                   44,888,306
<DISTRIBUTIONS-OF-GAINS>                                    41,866,720
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                     13,812,474
<NUMBER-OF-SHARES-REDEEMED>                                 21,343,946
<SHARES-REINVESTED>                                          3,356,693
<NET-CHANGE-IN-ASSETS>                                    (67,499,256)
<ACCUMULATED-NII-PRIOR>                                     39,687,073
<ACCUMULATED-GAINS-PRIOR>                                  (6,273,172)
<OVERDISTRIB-NII-PRIOR>                                              0
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                        3,309,715
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                              3,324,484
<AVERAGE-NET-ASSETS>                                       563,167,475
<PER-SHARE-NAV-BEGIN>                                            27.17  <F2>
<PER-SHARE-NII>                                                   1.53  <F2>
<PER-SHARE-GAIN-APPREC>                                           8.25  <F2>
<PER-SHARE-DIVIDEND>                                              2.35  <F2>
<PER-SHARE-DISTRIBUTIONS>                                         2.19  <F2>
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                              36.95  <F2>
<EXPENSE-RATIO>                                                   0.59  <F2>
<AVG-DEBT-OUTSTANDING>                                               0
<AVG-DEBT-PER-SHARE>                                              0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY  TARGET  MATURITIES  TRUST AND IS  QUALIFIED  IN ITS
ENTIRETY BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL
CLASSES, EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA).
IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
   <NUMBER> 7
   <NAME> BENHAM TARGET MATURITIES - 2025 PORTFOLIO
       
<S>                      <C>
<PERIOD-TYPE>                           YEAR
<FISCAL-YEAR-END>                       SEP-30-1998
<PERIOD-END>                            SEP-30-1998
<INVESTMENTS-AT-COST>                                   284,665,108
<INVESTMENTS-AT-VALUE>                                  354,568,140
<RECEIVABLES>                                                14,607
<ASSETS-OTHER>                                            4,512,005
<OTHER-ITEMS-ASSETS>                                              0
<TOTAL-ASSETS>                                          359,094,752
<PAYABLE-FOR-SECURITIES>                                          0
<SENIOR-LONG-TERM-DEBT>                                           0
<OTHER-ITEMS-LIABILITIES>                                 2,883,204
<TOTAL-LIABILITIES>                                       2,883,204
<SENIOR-EQUITY>                                                   0
<PAID-IN-CAPITAL-COMMON>                                276,368,990
<SHARES-COMMON-STOCK>                                    11,248,635
<SHARES-COMMON-PRIOR>                                     1,991,656
<ACCUMULATED-NII-CURRENT>                                 8,762,384
<OVERDISTRIBUTION-NII>                                            0
<ACCUMULATED-NET-GAINS>                                   1,177,142
<OVERDISTRIBUTION-GAINS>                                          0
<ACCUM-APPREC-OR-DEPREC>                                 69,903,032
<NET-ASSETS>                                            356,211,548
<DIVIDEND-INCOME>                                                 0
<INTEREST-INCOME>                                        11,622,041
<OTHER-INCOME>                                               66,911
<EXPENSES-NET>                                            1,249,537
<NET-INVESTMENT-INCOME>                                  10,439,415
<REALIZED-GAINS-CURRENT>                                  1,681,458
<APPREC-INCREASE-CURRENT>                                60,753,235
<NET-CHANGE-FROM-OPS>                                    72,874,108
<EQUALIZATION>                                                    0
<DISTRIBUTIONS-OF-INCOME>                                 4,549,154
<DISTRIBUTIONS-OF-GAINS>                                    305,669
<DISTRIBUTIONS-OTHER>                                             0
<NUMBER-OF-SHARES-SOLD>                                  24,090,981
<NUMBER-OF-SHARES-REDEEMED>                              16,359,125
<SHARES-REINVESTED>                                         199,765
<NET-CHANGE-IN-ASSETS>                                  282,390,233
<ACCUMULATED-NII-PRIOR>                                     997,384
<ACCUMULATED-GAINS-PRIOR>                                 (501,349)
<OVERDISTRIB-NII-PRIOR>                                           0
<OVERDIST-NET-GAINS-PRIOR>                                        0
<GROSS-ADVISORY-FEES>                                     1,240,147
<INTEREST-EXPENSE>                                                0
<GROSS-EXPENSE>                                           1,249,537
<AVERAGE-NET-ASSETS>                                    211,310,907
<PER-SHARE-NAV-BEGIN>                                         22.27  <F2>
<PER-SHARE-NII>                                                1.33  <F2>
<PER-SHARE-GAIN-APPREC>                                        8.07  <F2>
<PER-SHARE-DIVIDEND>                                           0.70  <F2>
<PER-SHARE-DISTRIBUTIONS>                                      0.05  <F2>
<RETURNS-OF-CAPITAL>                                           0.00
<PER-SHARE-NAV-END>                                           31.67  <F2>
<EXPENSE-RATIO>                                                0.59  <F2>
<AVG-DEBT-OUTSTANDING>                                            0
<AVG-DEBT-PER-SHARE>                                           0.00
        
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>

</TABLE>


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