DREYFUS CALIFORNIA TAX EXEMPT MONEY MARKET FUND
N-30D, 2000-05-30
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Dreyfus California

Tax Exempt Money Market Fund

ANNUAL REPORT March 31, 2000

(reg.tm)





The  views  expressed herein are current to the date of this report. These views
and  the  composition  of the fund's portfolio are subject to change at any time
based on market and other conditions.

           * Not FDIC-Insured * Not Bank-Guaranteed * May Lose Value


                                 Contents

                                 THE FUND
--------------------------------------------------

                             2   Letter from the President

                             3   Discussion of Fund Performance

                             6   Statement of Investments

                            10   Statement of Assets and Liabilities

                            11   Statement of Operations

                            12   Statement of Changes in Net Assets

                            13   Financial Highlights

                            14   Notes to Financial Statements

                            17   Report of Independent Auditors

                            18   Important Tax Information

                                 FOR MORE INFORMATION
---------------------------------------------------------------------------

                                 Back Cover

                                                                       The Fund

                                                             Dreyfus California

                                                   Tax Exempt Money Market Fund

LETTER FROM THE PRESIDENT

Dear Shareholder:

We  are  pleased to present this annual report for Dreyfus California Tax Exempt
Money Market Fund, covering the 12-month period from April 1, 1999 through March
31,  2000.  Inside,  you' ll  find  valuable  information about how the fund was
managed  during  the  reporting  period,  including a discussion with the fund's
portfolio manager, Jill Shaffro.

When  the  reporting period began, it had become apparent that international and
domestic  economies were growing faster than many analysts expected, giving rise
to  concerns that long-dormant inflationary pressures might re-emerge. Consumers
continued  to  spend heavily, unemployment levels reached new lows and the stock
market    continued    to    climb.

Because   unsustainable   economic  growth  may  trigger  unwanted  inflationary
pressures,  the  Federal Reserve Board raised key short-term interest rates five
times  during  the  reporting  period.  In  total, the Federal Reserve Board has
raised short-term interest rates by 125 basis points since late June 1999. While
these  economic  influences adversely affected longer term municipal bonds, they
positively    influenced    tax-exempt    money    market    yields.

We  appreciate  your  confidence over the past year, and we look forward to your
continued participation in Dreyfus California Tax Exempt Money Market Fund.

Sincerely,


Stephen E. Canter

President and Chief Investment Officer

The Dreyfus Corporation

April 12, 2000




DISCUSSION OF FUND PERFORMANCE

Jill Shaffro, Portfolio Manager

How did Dreyfus California Tax Exempt Money Market Fund perform during the
period?

For  the  12-month  period ended March 31, 2000, the fund produced an annualized
tax-exempt  yield  of 2.40%. Taking into account the effects of compounding, the
fund provided an annualized effective yield of 2.42%.(1) We attribute the fund's
performance  to  higher  short-term  interest  rates  implemented by the Federal
Reserve Board, which helped enhance tax-exempt money market yields. However, the
effects  of  higher  interest  rates  were  largely offset in California by high
investor demand and a declining supply of newly issued securities.

What is the fund's investment approach?

The  fund' s  objective  is to seek a high level of federal and California state
tax-exempt  income  while  maintaining  a  stable  $1.00  share  price.  We  are
especially vigilant in our efforts to preserve capital.

In  pursuing this objective, we employ two primary strategies. First, we attempt
to  add  value  by  constructing a diverse portfolio of high quality, tax-exempt
money market instruments from California issuers. Second, we actively manage the
portfolio' s  average  maturity  in anticipation of supply-and-demand changes in
California's short-term municipal marketplace.

For  example, if we expect an increase in short-term supply, we may decrease the
average  maturity  of  the  portfolio,  which  would  enable  us to purchase new
securities  with higher yields. Yields tend to rise when there is an increase in
new-issue  supply  competing for investor interest. New securities are generally
issued   with  maturities  in  the  one-year  range,  which  will  lengthen  the
portfolio' s average maturity. If we anticipate limited new-issue supply, we may
extend  the  portfolio's average maturity to maintain current yields for as long
as  practical.  At other times, we try to maintain an average maturity that  The
Fund


DISCUSSION OF FUND PERFORMANCE (CONTINUED)

reflects    our   view   of   short-term   interest-rate   trends   and   future
supply-and-demand considerations.

What other factors influenced the fund's performance?

The  fund  was  primarily  influenced  by  robust  U.S.  economic growth, rising
interest rates and a declining supply of newly issued securities.

By  the time the reporting period began on April 1, 1999, it had become apparent
that  economic  growth  in the United States and overseas was stronger than many
analysts  had  expected.  In the U.S., consumer confidence had reached a 30-year
high,  oil  prices  were  bouncing  back  from  the  previous  year' s lows, and
employment  was  strong  with  hourly wages rising. These economic forces raised
concerns  among  fixed-income investors that long-dormant inflationary pressures
might  re-emerge.  In  response,  between  June 1999 and March 2000, the Federal
Reserve  Board  increased  short-term  interest  rates  five  times  for a total
increase of 125 basis points.

Although  these  interest-rate  increases caused short-term tax-exempt yields to
rise,  tax-exempt  money  market yields rose less than comparable taxable yields
over   the  past  six  months.  That' s  because  California  and  many  of  its
municipalities  enjoyed  higher  tax revenues, reducing their need to borrow and
resulting  in  a  reduced  supply  of  securities. On the other hand, the strong
California  economy  has  created  substantial  wealth  for  many members of the
state' s  high-tech  community,  many  of whom have invested in tax-exempt money
market  securities.  This  surge  in  demand  for a limited number of securities
constrained the rise of California tax-exempt money market yields.

What is the fund's current strategy?

We  have  continued  to  manage  the  portfolio' s weighted average maturity and
portfolio mix according to our interest-rate and supply-and-demand expectations

Accordingly,  in  August,  we  had adopted a relatively long average maturity to
maintain    competitive    yields    during    a    time    of    little    new

issuance. We later allowed the portfolio's average maturity to decline naturally
as  existing holdings matured. We again extended the average maturity toward the
end  of  the  year  to take advantage of market weakness in advance of potential
Year  2000  concerns,  which  ultimately  proved unfounded. Throughout the first
quarter  of  2000,  we  maintained a weighted average maturity that was slightly
long relative to our peer group.

Our security selection strategy continued to focus on Variable Rate Demand Notes
(VRDNs) , which  feature  adjustable  yields,  short  maturities, and afford the
portfolio  a high degree of liquidity and credit quality. Whenever opportunities
arose,  we  attempted  to  take  advantage  of  any available municipal notes or
commercial  paper  that  might  enable  us  to lock in attractive yields without
extending  our  average  maturity.  We believe that this strategy will serve the
fund well until more municipal notes become available during the traditional May
through  July  new-issuance season. Of course, portfolio composition will change
over time.

April 12, 2000

(1)  ANNUALIZED EFFECTIVE YIELD IS BASED UPON DIVIDENDS DECLARED DAILY AND
REINVESTED MONTHLY. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS. YIELDS
FLUCTUATE. INCOME MAY BE SUBJECT TO STATE AND LOCAL TAXES FOR NON-CALIFORNIA
RESIDENTS, AND SOME INCOME MAY BE SUBJECT TO THE FEDERAL ALTERNATIVE MINIMUM TAX
(AMT) FOR CERTAIN INVESTORS. AN INVESTMENT IN THE FUND IS NOT INSURED OR
GUARANTEED BY THE FDIC OR ANY OTHER GOVERNMENT AGENCY. ALTHOUGH THE FUND SEEKS
TO PRESERVE THE VALUE OF YOUR INVESTMENT AT $1.00 PER SHARE, IT IS POSSIBLE TO
LOSE MONEY BY INVESTING IN THE FUND.

                                                             The Fund
<TABLE>
<CAPTION>

STATEMENT OF INVESTMENTS

March 31, 2000

STATEMENT OF INVESTMENTS

                                                                                             Principal

TAX EXEMPT INVESTMENTS--98.2%                                                               Amount ($)                Value ($)
------------------------------------------------------------------------------------------------------------------------------------

CALIFORNIA--84.2%

Alameda-Contra Costa School Finance Authority, COP,

  VRDN (Capital Improvement Financing Project)

  3.25%, Series I (Insured; AMBAC and Liquidity

<S>                                                                                           <C>                      <C>
   Facility; Kreditbank)                                                                      3,520,000  (a)           3,520,000

Anaheim Housing Authority, MFHR, Refunding, VRDN

  (Sage Park Project)

   3.25%, Series A (LOC; FNMA)                                                                2,000,000  (a)           2,000,000

Antioch Public Financing Authority,

  Reassessment Revenue

   4.20%, Series A, 9/2/2000 (Insured; AMBAC)                                                 1,450,000                1,453,210

State of California 3.20%, Series BJ, 6/1/2000                                                2,835,000                2,835,111

California Educational Facility Authority, Revenue,

  VRDN (San Francisco Conservatory)

  4.20% (Corp. Guaranty; California State Teachers

   Retirement System)                                                                         3,000,000  (a)           3,000,000

California Housing Finance Agency,

  Home Mortgage Revenue:

      3.02%, Series D, 4/30/2000                                                              5,000,000                5,000,000

      VRDN, 3.35%, Series C (Corp. Guaranty;

         California State Teachers Retirement System

         and LOC; Commerzbank)                                                                4,000,000  (a)           4,000,000

California Public Capital Improvements Financing

  Authority, Revenue (Pooled Project)

  3.60%, Series C, 6/15/2000

   (LOC; National Westminster Bank)                                                           9,000,000                9,000,000

California School Cash Reserve Program Authority,

   4%, Series A, 7/3/2000 (Insured; AMBAC)                                                    8,000,000                8,017,739

California Statewide Community Development Authority:

  COP, VRDN (North California Retired Officers)

      3.45% (LOC; DresdnerBank)                                                               6,000,000  (a)           6,000,000

   Revenue, TRAN

      4%, Series A-1, 6/30/2000 (Insured; FSA)                                                4,000,000                4,007,328

City of Daly Housing Development Financing Agency,

  Multi-Family Revenue, Refunding, VRDN

  (Serramonte Del Ray)

   3.23%, Series A (LOC; FNMA)                                                               10,000,000  (a)          10,000,000

East Bay Regional Park District

   5.50%, Series C, 9/1/2000 (Insured; FGIC)                                                    500,000                  503,458

Garden Grove Housing Authority, Multi-Family Revenue,

  VRDN (Valley View-Senior Villas Project)

   3.30%, Series A (LOC; Wells Fargo Bank)                                                    3,200,000  (a)           3,200,000


                                                                                              Principal

TAX EXEMPT INVESTMENTS (CONTINUED)                                                           Amount ($)                Value ($)
------------------------------------------------------------------------------------------------------------------------------------

CALIFORNIA (CONTINUED)

Kings County Housing Authority, MFHR, Refunding,

  VRDN (Edgewater Isle Apartments)

   3.20%, Series A (LOC; Wells Fargo Bank)                                                    6,155,000  (a)           6,155,000

City of Los Angeles, Multi-Family Revenue, VRDN:

  (Loans To Lender Program)

      3.50%, Series A (LOC; Federal Home Loan Bank)                                           2,625,000  (a)           2,625,000

   Refunding:

      (Canyon Creek Apartments)

         3.20%, Series C (LOC; Banco Santander)                                               4,000,000  (a)           4,000,000

      (Moutainback Apartments)

         3.20%, Series B (LOC; Banco Santander)                                               1,840,000  (a)           1,840,000

Los Angeles County, TRAN 4%, 6/30/2000                                                        4,100,000                4,106,632

Los Angeles County Public Works Financing Authority,

  LR, Refunding (Master Refunding Project)

   5%, Series A (Insured; FSA)                                                                3,000,000                3,032,807

Los Angeles Department of Water and Sewer, Electric Plant

  Revenue, VRDN (Second Issue)

  3.20%, Series D

   (Liquidity Facility; Toronto-Dominion Bank)                                                8,000,000  (a)           8,000,000

Los Angeles Unified School District, TRAN

   4%, Series A, 6/30/2000                                                                    4,000,000                4,008,581

Metropolitan Water District, Southern California

  Waterworks Revenue

  3.65%, Series B, 6/1/2000

   (Liquidity Facility; Bank of America)                                                      2,200,000                2,200,000

Newport Beach, Revenue, VRDN

  (Hoag Memorial Presbyterian Hospital)

   3.65%, Series C

   (Corp. Guaranty; Hoag Memorial Presbyterian Hospital)                                      7,200,000  (a)           7,200,000

Orange County, Apartment Development Revenue,

  Refunding, VRDN:

    (Laguna Summit Apartments)

         3.15%, Series X (Insured; FGIC)                                                      8,500,000  (a)           8,500,000

      (Vintage Woods)

         3.15%, Series H (LOC; FNMA)                                                         10,000,000  (a)          10,000,000

San Bernardino County, TRAN 3.75%, 9/29/2000                                                  1,735,000                1,735,000

City of San Jose, MFHR, VRDN:

   Refunding (Kimberly Woods Apartments)

      3.25%, Series A (LOC; Federal Home Loan Bank)                                           6,000,000  (a)           6,000,000

   (Seina Renaissance Square Apartments)

      3.20%, Series A (LOC; Landesbank Hessen)                                                3,500,000  (a)           3,500,000

                                                                                                     The Fund

STATEMENT OF INVESTMENTS (CONTINUED)

                                                                                              Principal

TAX EXEMPT INVESTMENTS (CONTINUED)                                                           Amount ($)               Value ($)
------------------------------------------------------------------------------------------------------------------------------------

CALIFORNIA (CONTINUED)

Santa Ana Community Redevelopment Agency, Prerefunded

  (Santa Ana Redevelopment Project Area)

  6.50%, Series B, 12/15/2000

   (Escrowed in; U.S. Government Securities)                                                  2,000,000  (b)           2,077,364

U.S. RELATED--14.0%

Commonwealth of Puerto Rico Government

  Development Bank, CP:

      3.70%, 4/11/2000                                                                        5,000,000                5,000,000

      3.15%, 4/27/2000                                                                        2,200,000                2,200,000

      3.15%, 4/28/2000                                                                        4,487,000                4,487,000

      3.55%, 7/13/2000                                                                        2,000,000                2,000,000

      3.60%, 8/10/2000                                                                        3,000,000                3,000,000

Commonwealth of Puerto Rico Government Aqueduct

  and Sewer Authority, Revenue

   8.75%, Series A, 7/1/2000 (Insured; FSA)                                                     500,000                  506,190

Commonwealth of Puerto Rico Government Highway

  Authority, Highway Revenue, Prerefunded

   7.75%, Series Q, 7/1/2000                                                                  2,100,000                2,161,299

Commonwealth of Puerto Rico Government Highway

  and Transportation, Revenue, VRDN

  3.25%, Series A (Insured; AMBAC and Liquidity

   Facility; Bank of Nova Scotia)                                                             2,300,000  (a)           2,300,000

Virgin Islands Public Finance Authority, Revenue,

  Prerefunded

  7.30%, Series A, 10/1/2000

   (Escrowed in; U.S. Government Securities)                                                  1,110,000  (b)           1,140,470
------------------------------------------------------------------------------------------------------------------------------------

TOTAL INVESTMENTS (cost $160,312,189)                                                             98.2%              160,312,189

CASH AND RECEIVABLES (NET)                                                                         1.8%                2,997,315

NET ASSETS                                                                                       100.0%              163,309,504


Summary of Abbreviations

AMBAC                     American Municipal Bond

                             Assurance Corporation

COP                       Certificate of Participation

CP                        Commercial Paper

FGIC                      Financial Guaranty Insurance

                             Company

FNMA                      Federal National Mortgage

                             Association

FSA                       Financal Security Assurance

LOC                       Letter of Credit

LR                        Lease Revenue

MFHR                      Multi-Family Housing Revenue

TRAN                      Tax and Revenue Anticipation

                             Notes

VRDN                      Variable Rate Demand Notes

Summary of Combined Ratings (Unaudited)

Fitch                or          Moody's               or        Standard & Poor's                           Value (%)
------------------------------------------------------------------------------------------------------------------------------------

F1+/F1                           VMIG1/MIG1, P1                  SP1+/SP1, A1+/A1, A2                             93.2

AAA/AA (c)                       Aaa/Aa (c)                      AAA/AA (c)                                        6.8

                                                                                                                 100.0

(A) SECURITIES PAYABLE ON DEMAND. VARIABLE INTEREST RATE-SUBJECT TO PERIODIC CHANGE.

(B)  BONDS WHICH ARE PREREFUNDED ARE COLLATERALIZED BY U.S. GOVERNMENT
SECURITIES WHICH ARE HELD IN ESCROW AND ARE USED TO PAY PRINCIPAL AND INTEREST
ON THE MUNICIPAL ISSUE AND TO RETIRE THE BONDS IN FULL AT THE EARLIEST REFUNDING
DATE.

(C)  NOTES WHICH ARE NOT F, MIG OR SP RATED ARE REPRESENTED BY BOND RATINGS OF
THE ISSUERS.

(D)  AT MARCH 31, 2000, THE FUND HAD $66,820,000 (40.9% OF NET ASSETS) INVESTED
IN SECURITIES WHOSE PAYMENT OF PRINCIPAL AND INTEREST IS DEPENDENT UPON REVENUES
GENERATED FROM HOUSING PROJECTS.
</TABLE>

SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund



STATEMENT OF ASSETS AND LIABILITIES

March 31, 2000

                                                             Cost         Value
--------------------------------------------------------------------------------

ASSETS ($):

Investments in securities--See Statement of
Investments                                           160,312,189   160,312,189

Cash                                                                  1,893,215

Interest receivable                                                   1,222,516

Prepaid expenses and other assets                                         8,207

                                                                    163,436,127
--------------------------------------------------------------------------------

LIABILITIES ($):

Due to The Dreyfus Corporation and affiliates                            63,174

Accrued expenses and other liabilities                                   63,449

                                                                        126,623
--------------------------------------------------------------------------------

NET ASSETS ($)                                                      163,309,504
--------------------------------------------------------------------------------

COMPOSITION OF NET ASSETS ($):

Paid-in capital                                                     163,402,119

Accumulated net realized gain (loss) on investments                    (92,615)

NET ASSETS ($)                                                      163,309,504
--------------------------------------------------------------------------------

SHARES OUTSTANDING

(unlimited number of $.01 par value shares of Beneficial Interest authorized)
                                                                    163,434,453

NET ASSET VALUE, offering and redemption price per share ($)               1.00

SEE NOTES TO FINANCIAL STATEMENTS.



STATEMENT OF OPERATIONS

Year Ended March 31, 2000

--------------------------------------------------------------------------------

INVESTMENT INCOME ($):

INTEREST INCOME                                                      5,460,860

EXPENSES:

Management fee--Note 2(a)                                              886,194

Shareholder servicing costs--Note 2(b)                                 180,440

Professional fees                                                       52,367

Trustees' fees and expenses--Note 2(c)                                  27,405

Custodian fees                                                          18,894

Prospectus and shareholders' reports                                    15,953

Registration fees                                                       12,630

Miscellaneous                                                            6,613

TOTAL EXPENSES                                                       1,200,496

INVESTMENT INCOME--NET                                               4,260,364
--------------------------------------------------------------------------------

NET REALIZED GAIN (LOSS) ON INVESTMENTS--NOTE 1(B) ($):                  8,135

NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                 4,268,499

SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund


STATEMENT OF CHANGES IN NET ASSETS

                                                      Year Ended March 31,
                                             -----------------------------------

                                                     2000                1999
--------------------------------------------------------------------------------

OPERATIONS ($):

Investment income--net                          4,260,364            4,994,835

Net realized gain (loss) from investments           8,135               33,885

NET INCREASE (DECREASE) IN NET ASSETS
   RESULTING FROM OPERATIONS                    4,268,499            5,028,720
--------------------------------------------------------------------------------

DIVIDENDS TO SHAREHOLDERS FROM ($):

INVESTMENT INCOME--NET                        (4,260,364)          (4,994,835)
--------------------------------------------------------------------------------

BENEFICIAL INTEREST TRANSACTIONS ($1.00 per share):

Net proceeds from shares sold                 361,109,472         356,240,141

Dividends reinvested                            2,767,290           3,266,962

Cost of shares redeemed                     (394,794,925)        (359,534,075)

INCREASE (DECREASE) IN NET ASSETS
   FROM BENEFICIAL INTEREST TRANSACTIONS     (30,918,163)            (26,972)

TOTAL INCREASE (DECREASE) IN NET ASSETS      (30,910,028)              6,913
--------------------------------------------------------------------------------

NET ASSETS ($):

Beginning of Period                           194,219,532          194,212,619

END OF PERIOD                                 163,309,504          194,219,532

SEE NOTES TO FINANCIAL STATEMENTS.

<TABLE>
<CAPTION>


FINANCIAL HIGHLIGHTS

The  following table describes the performance for the fiscal periods indicated.
Total return shows how much your investment in the fund would have increased (or
decreased)  during  each  period,  assuming you had reinvested all dividends and
distributions.  These  figures  have  been  derived  from  the  fund's financial
statements.

                                                                                           Year Ended March 31,
                                                                --------------------------------------------------------------------

                                                                 2000           1999           1998           1997          1996
------------------------------------------------------------------------------------------------------------------------------------

PER SHARE DATA ($):

<S>                                                              <C>            <C>            <C>            <C>           <C>
Net asset value, beginning of period                             1.00           1.00           1.00           1.00          1.00

Investment Operations:

Investment income--net                                            .024           .026           .029           .028          .030

Distributions:

Dividends from investment income--net                            (.024)         (.026)         (.029)         (.028)        (.030)

Net asset value, end of period                                   1.00           1.00           1.00           1.00          1.00
------------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN (%)                                                 2.43           2.59           2.91           2.80          3.07
------------------------------------------------------------------------------------------------------------------------------------

RATIOS/SUPPLEMENTAL DATA (%):

Ratio of expenses to average net assets                           .68            .66            .69            .66           .64

Ratio of net investment income

   to average net assets                                         2.40           2.56           2.88           2.77          3.03
------------------------------------------------------------------------------------------------------------------------------------

Net Assets, end of period ($ x 1,000)                         163,310        194,220        194,213        226,548       252,985

SEE NOTES TO FINANCIAL STATEMENTS.
</TABLE>

                                                             The Fund



NOTES TO FINANCIAL STATEMENTS

NOTE 1--Significant Accounting Policies:

Dreyfus California Tax Exempt Money Market Fund (the "fund") is registered under
the  Investment  Company  Act  of 1940, as amended (the "Act"), as a diversified
open-end  management  investment  company. The fund's investment objective is to
provide investors with as high a level of current income exempt from Federal and
State  of  California  income  taxes  as  is consistent with the preservation of
capital   and  the  maintenance  of  liquidity.  The  Dreyfus  Corporation  (the
" Manager" ) serves  as  the  fund's investment adviser. The Manager is a direct
subsidiary  of  Mellon  Bank, N.A., which is a wholly-owned subsidiary of Mellon
Financial  Corporation.  Effective  March  22, 2000, Dreyfus Service Corporation
("DSC"), a wholly-owned subsidiary of the Manager, became the distributor of the
fund' s  shares,  which  are sold to the public without a sales charge. Prior to
March 22, 2000, Premier Mutual Fund Services, Inc. was the distributor.

It  is  the  fund's policy to maintain a continuous net asset value per share of
$1.00; the fund has adopted certain investment, portfolio valuation and dividend
and distribution policies to enable it to do so. There is no assurance, however,
that  the  fund  will  be able to maintain a stable net asset value per share of
$1.00.

The  fund' s  financial  statements  are  prepared  in accordance with generally
accepted  accounting  principles,  which require the use of management estimates
and assumptions. Actual results could differ from those estimates.

(a) Portfolio valuation: Investments in securities are valued at amortized cost,
which  has been determined by the fund's Board of Trustees to represent the fair
value of the fund's investments.

(b)  Securities  transactions and investment income: Securities transactions are
recorded  on  a  trade date basis. Interest income, adjusted for amortization of
premiums  and original issue discounts on investments, is earned from settlement
date and recognized on the accrual basis. Realized gain and loss from securities
transactions  are  recorded  on  the  identified cost basis. Cost of investments
represents    amortized    cost.

Under the terms of the custody agreement, the fund received net earnings credits
of  $7,006 based on available cash balances left on deposit. Income earned under
this arrangement is included in interest income.

The  fund  follows  an  investment  policy  of  investing primarily in municipal
obligations  of  one  state. Economic changes affecting the state and certain of
its  public  bodies  and municipalities may affect the ability of issuers within
the  state to pay interest on, or repay principal of, municipal obligations held
by the fund.

(c) Dividends to shareholders: It is the policy of the fund to declare dividends
daily  from  investment  income-net.  Such dividends are paid monthly. Dividends
from  net realized capital gain are normally declared and paid annually, but the
fund  may  make  distributions  on  a  more  frequent  basis  to comply with the
distribution  requirements of the Internal Revenue Code of 1986, as amended (the
" Code" ). To the extent that net realized capital gain can be offset by capital
loss carryovers, it is the policy of the fund not to distribute such gain.

(d) Federal income taxes: It is the policy of the fund to continue to qualify as
a  regulated  investment  company, which can distribute tax exempt dividends, by
complying  with the applicable provisions of the Code, and to make distributions
of  income  and  net  realized  capital  gain  sufficient  to  relieve  it  from
substantially all Federal income and excise taxes.

The fund has an unused capital loss carryover of approximately $63,000 available
for  Federal  income  tax  purposes  to be applied against future net securities
profits,  if any, realized subsequent to March 31, 2000. If not applied, $21,000
of the carryover expires in fiscal 2002, $27,000 expires in fiscal 2003, $10,000
expires in fiscal 2004 and $5,000 expires in fiscal 2005.

At  March  31, 2000, the cost of investments for Federal income tax purposes was
substantially  the  same  as  the cost for financial reporting purposes (see the
Statement of Investments).

                                                             The Fund

NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 2--Management Fee and Other Transactions With Affiliates:

(a)  Pursuant  to a management agreement with the Manager, the management fee is
computed  at  the  annual  rate  of .50 of 1% of the value of the fund's average
daily net assets and is payable monthly.

(b)  Under  the Shareholder Services Plan, the fund reimburses DSC an amount not
to  exceed  an annual rate of .25 of 1% of the value of the fund's average daily
net  assets for certain allocated expenses of providing personal services and/or
maintaining  shareholder  accounts.  The  services provided may include personal
services  relating  to  shareholder  accounts,  such  as  answering  shareholder
inquiries  regarding  the  fund and providing reports and other information, and
services  related  to the maintenance of shareholder accounts. During the period
ended  March 31, 2000, the fund was charged $112,395 pursuant to the Shareholder
Services    Plan.

The  fund  compensates  Dreyfus Transfer, Inc., a wholly-owned subsidiary of the
Manager,   under  a  transfer  agency  agreement  for  providing  personnel  and
facilities  to  perform transfer agency services for the fund. During the period
ended  March  31,  2000,  the  fund was charged $48,217 pursuant to the transfer
agency agreement.

(c)  Each  trustee  who  is  not  an  "affiliated  person" as defined in the Act
receives from the fund an annual fee of $2,500 and an attendance fee of $250 per
meeting.  The  Chairman  of  the  Board  receives  an  additional  25%  of  such
compensation.


REPORT OF INDEPENDENT AUDITORS

Shareholders and Board of Trustees

Dreyfus California Tax Exempt Money Market Fund

We  have audited the accompanying statement of assets and liabilities of Dreyfus
California Tax Exempt Money Market Fund, including the statement of investments,
as  of  March 31, 2000 and the related statement of operations for the year then
ended,  the  statement of changes in net assets for each of the two years in the
period  then  ended,  and  financial  highlights for each of the years indicated
therein.   These   financial   statements   and  financial  highlights  are  the
responsibility  of  the  Fund' s management. Our responsibility is to express an
opinion  on  these  financial  statements  and financial highlights based on our
audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to  obtain  reasonable  assurance  about  whether  the  financial statements and
financial  highlights  are  free  of  material  misstatement.  An audit includes
examining,  on  a test basis, evidence supporting the amounts and disclosures in
the  financial  statements  and  financial  highlights.  Our procedures included
confirmation of securities owned as of March 31, 2000 by correspondence with the
custodian.  An  audit also includes assessing the accounting principles used and
significant  estimates  made  by  management,  as well as evaluating the overall
financial   statement  presentation.  We  believe  that  our  audits  provide  a
reasonable basis for our opinion.

In  our  opinion,  the financial statements and financial highlights referred to
above  present  fairly,  in  all  material  respects,  the financial position of
Dreyfus  California  Tax Exempt Money Market Fund at March 31, 2000, the results
of  its  operations  for  the year then ended, the changes in its net assets for
each of the two years in the period then ended, and the financial highlights for
each  of the indicated years, in conformity with accounting principles generally
accepted in the United States.


New York, New York

May 5, 2000

                                                             The Fund


IMPORTANT TAX INFORMATION (Unaudited)

In accordance with Federal tax law, the fund hereby designates all the dividends
paid  from  investment income-net during its fiscal year ended March 31, 2000 as
" exempt-interest  dividends" (not generally subject to regular Federal and, for
individuals who are California residents, California personal income taxes).


NOTES

                                                           For More Information

Dreyfus California Tax Exempt

Money Market Fund

200 Park Avenue

New York, NY 10166

  Manager

The Dreyfus Corporation

200 Park Avenue

New York, NY 10166

  Custodian

The Bank of New York

100 Church Street

New York, NY 10286

  Transfer Agent &

  Dividend Disbursing Agent

Dreyfus Transfer, Inc.

P.O. Box 9671

Providence, RI 02940

  Distributor

Dreyfus Service Corporation

200 Park Avenue

New York, NY 10166

To obtain information:

BY TELEPHONE Call 1-800-645-6561

BY MAIL  Write to:  The Dreyfus Family of Funds 144 Glenn Curtiss Boulevard
Uniondale, NY 11556-0144

BY E-MAIL  Send your request to [email protected]

ON THE INTERNET  Information can be viewed online or downloaded from:

http://www.dreyfus.com

(c) 2000 Dreyfus Service Corporation                                   357AR003






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