PUTNAM TAX EXEMPT MONEY MARKET FUND
N-30D, 1995-11-29
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PUTNAM
TAX EXEMPT
MONEY MARKET
FUND

ANNUAL REPORT

September 30, 1995

[LOGO]
BOSTON * LONDON * TOKYO

<PAGE>
PERFORMANCE HIGHLIGHTS
"In  just five years, total assets of money funds have grown  by  72%,
and in the not too distant future, assets should break the elusive  $1
trillion  barrier. . . . There are many factors contributing to  asset
growth.  One of the most important has been the tremendous  acceptance
of  money  funds  as  a viable cash alternative to traditional  market
securities."
- -- IBC Money Market Insight, September 1995

Performance  should  always  be  considered  in  light  of  a   fund's
investment  strategy. Putnam Tax Exempt Money Market Fund is  designed
for  investors seeking current income exempt from federal income  tax,
consistent with capital preservation, stable principal, and liquidity.

FISCAL 1995 RESULTS AT A GLANCE
<TABLE><CAPTION>
<S>                             <C>                 <C>           <C>
TOTAL RETURN:                                                     NAV
- ----------------------------------------------------------------------
12 months ended 9/30/95
 (change in value during
 period plus reinvested
 distributions)                                                 3.16%
- ----------------------------------------------------------------------
DISTRIBUTIONS:                  NO.              INCOME        TOTAL
- ----------------------------------------------------------------------
                                 12           $0.031155     $0.031155
- ----------------------------------------------------------------------
CURRENT RETURN
(end of period):                                                  NAV
- ----------------------------------------------------------------------
Current 7-day SEC yield(1)                                      3.19%
Taxable equivalent(2)                                            5.28
Current 30-day SEC yield(1)                                      3.04
Taxable equivalent(2)                                            5.03
- ----------------------------------------------------------------------
<FN>
Performance  data represent past results. For performance over  longer
periods,  see  page 7. (1)The 7- and 30-day yields are  the  two  most
common  gauges  for  measuring money-market  mutual-fund  performance.
Investment  income may be subject to state and local taxes.  For  some
investors,  investment  income may also  be  subject  to  the  federal
alternative  minimum tax. (2)Assumes maximum 39.6% federal  tax  rate.
Results  for  investors subject to lower tax rates  would  not  be  as
advantageous.  An  investment  in the  fund  is  neither  insured  nor
guaranteed by the U.S. government. There can be no assurance that  the
fund  will  be able to maintain a stable net asset value of $1.00  per
share.
</TABLE>
<PAGE>
FROM THE CHAIRMAN
                                              [PHOTO OF GEORGE PUTNAM]
                                                     (C) KARSH, OTTAWA

DEAR SHAREHOLDER:

PUTNAM  TAX  EXEMPT MONEY MARKET FUND ENDS ONE FISCAL YEAR AND  BEGINS
ANOTHER  IN  ONE  OF THE MOST LIVELY BOND MARKETS IN YEARS.  INFLATION
APPEARS  TO  HAVE PEAKED AT 3%, A LOWER LEVEL THAN IN  THE  MID-1980S.
WITH  MODEST GROWTH, IT COULD FALL LOWER, MAKING REAL YIELDS EVEN MORE
ATTRACTIVE THAN THEY ARE NOW.

THIS  FAVORABLE  ENVIRONMENT  BELIES THE CHALLENGES  YOUR  FUND  FACED
DURING  THE 12 MONTHS ENDED SEPTEMBER 30, 1995, AS THE ECONOMY  SLOWED
AND  INTEREST RATES -- ESPECIALLY SHORT-TERM RATES -- BEGAN A DESCENT.
THE  DECLINE  IN  SHORT-TERM RATES WAS FORESHADOWED WHEN  THE  FEDERAL
RESERVE  BOARD OPTED NOT TO ADJUST RATES UPWARD IN FEBRUARY  AND  THEN
WAS CONFIRMED AS THE FED ACTUALLY LOWERED RATES IN JULY.

FUND  MANAGER  LINDSEY STRONG'S CHALLENGE IN THIS ENVIRONMENT  WAS  TO
STAY  AHEAD  OF  THE  TREND, WHICH SHE DID BY  EXTENDING  THE  AVERAGE
MATURITY OF THE SECURITIES IN THE PORTFOLIO. SHE MADE THE MOVE  BEFORE
THE   FED'S  JULY  RATE  CUT,  THUS  HELPING  THE  FUND  MAINTAIN  ITS
COMPETITIVE EDGE. LINDSEY'S REPORT FOR FISCAL 1995 AND HER OUTLOOK FOR
THE MONTHS AHEAD APPEAR ON THE FOLLOWING PAGES.

RESPECTFULLY YOURS,

[SIGNATURE}

GEORGE PUTNAM
CHAIRMAN OF THE TRUSTEES
NOVEMBER 15, 1995

<PAGE>
REPORT FROM THE FUND MANAGER
LINDSEY C. STRONG

The 12-month period that ended September 30, 1995, marked another year
of  solid  performance for Putnam Tax Exempt Money  Market  Fund.  Our
challenge  during the period was to manage the fund in an  environment
where  the economy and the direction of interest rates changed  course
rather  dramatically. Throughout the period, we maintained  an  active
investment  strategy of selecting high-quality, short-term instruments
for the portfolio, and this resulted in a steady stream of monthly tax-
exempt income and a stable price of $1.00 per share.

A CHANGED INVESTMENT ENVIRONMENT

During  the  last  quarter of calendar 1994, economic growth  remained
strong  and concerns about increased inflation dominated the financial
markets.  At  that  time,  the Federal Reserve Board's  anti-inflation
policy  of periodically raising short-term interest rates was in  full
force. Even as the Fed was raising rates for the last time in February
1995, the success of its anti-inflation policy was becoming apparent.

The growth in gross domestic product (GDP) slowed from 5.1% during the
fourth  quarter  of  1994 to 2.8% during the first  quarter  of  1995.
During  the  second quarter of 1995, GDP declined to  0.5%.  By  early
summer,  recession fears began to mount, and in July, the Fed  lowered
short-term  interest rates from 6.0% to 5.75%. Toward the end  of  the
summer,  leading economic indicators began to show signs of  strength,
and recession concerns abated. However, the Fed took no other action.

CAPITALIZING ON INTEREST-RATE MOVES

As  interest rates fluctuated during the period, our strategy centered
on  maximizing income while at the same time maintaining a very  high-
quality  portfolio  of securities. To this end, while  interest  rates
were  rising, we shortened the average maturity of the portfolio. This
allowed us to take advantage of incrementally higher yields.
<PAGE>
When  it became apparent that rates were unlikely to rise further,  we
reversed our approach, seeking to lock in higher yields by lengthening
the  average maturity of the portfolio. Finally, toward the end of the
fiscal  year,  as  the  direction of interest  rates  became  somewhat
uncertain,  we  put  the fund's average maturity  in  a  more  neutral
position. It is no longer as short as it was very early in the period,
nor is it as long as it was in the summer.

SECURITY SELECTION FOCUSED ON QUALITY

Typically,  the  supply  of  tax-exempt  securities  ebbs  and   flows
throughout  the  year. Because the fiscal year for many municipalities
begins  in  June  or  July,  new issues of tax-exempt  securities  are
usually  plentiful  during the summer months. While  new  issuance  of
securities  has lagged that of previous years, we were still  able  to
find  securities  that measured up to our strict  standards  for  high
quality and liquidity in a wide range of states and municipalities.

In  selecting  securities for the portfolio, we invested primarily  in
variable rate demand notes (VRDNs). VRDNs pay variable interest  rates
that  reset at daily, weekly, or monthly intervals. Nearly 80% of your
fund's investments are insured or backed

PERFORMANCE COMPARISONS (9/30/95)
<TABLE><CAPTION>
<S>                                               <C>              <C>
                                              CURRENT        AFTER-TAX
                                              RETURN*           RETURN
- ----------------------------------------------------------------------
PASSBOOK SAVINGS ACCOUNT                        2.01%            1.21%
- ----------------------------------------------------------------------
TAXABLE MONEY-MARKET FUND 7-DAY YIELD            5.35             3.23
- ----------------------------------------------------------------------
3-MONTH CERTIFICATE OF DEPOSIT (CD)              3.26             1.97
- ----------------------------------------------------------------------
PUTNAM TAX EXEMPT MONEY MARKET
FUND (7-DAY YIELD)                               3.19             3.19
- ----------------------------------------------------------------------

<FN>
*    The net asset value of money-market mutual funds is uninsured and
     designed  to  be  fixed,  while  distributions  vary  daily.  The
     principal  values on passbook savings and bank CDs are  generally
     insured up to certain limits by state and federal agencies. CDs -
     -  unlike  money-market funds, which incur more risk --  offer  a
     fixed   rate   of  return.  Unlike  money-market   funds,   early
     withdrawals   from  bank  CDs  may  be  subject  to   substantial
     penalties. Investment returns will fluctuate. After-tax return is
     based on a maximum 39.6% federal tax bracket.

     Sources: Bank of Boston (passbook savings), Bank Rate Monitor (3-
     month  CDs),  IBC/Donaghue's Money Fund  Report  (taxable  money-
     market  fund  7-day  yield). by bank  letters  of  credit.  These
     features enhance the quality assurance of the securities  in  the
     portfolio,  even  those  rated  in  the  highest  categories   by
     nationally recognized rating services.
</TABLE>
<PAGE>

OUR OUTLOOK

Going  forward,  we will be monitoring the economic  environment  very
carefully.  Because the Fed seems to have achieved  its  goal  of  low
inflation  and  a  slowly growing economy, we believe  interest  rates
could  decline modestly in the months ahead. However, we do not expect
to  see  extremely  steep  declines in  rates  such  as  the  ones  we
experienced in 1993.

Because your fund's average maturity is relatively neutral, we believe
it  is  well positioned to generate a relatively high amount of income
even if rates decline. In the months ahead, we will continue to seek a
competitive  amount  of  income  by investing  in  a  well-diversified
portfolio of tax-exempt money market instruments. We will maintain our
emphasis on stability of principal, high quality, and liquidity.


The  views  expressed throughout the report are exclusively  those  of
Putnam Management and are not meant as investment advice. Although the
described  holdings were viewed favorably as of 9/30/95, there  is  no
guarantee  the  fund  will continue to hold these  securities  in  the
future.

<PAGE>
PERFORMANCE SUMMARY

THIS  SECTION  PROVIDES, AT A GLANCE, INFORMATION  ABOUT  YOUR  FUND'S
PERFORMANCE.  TOTAL RETURN SHOWS HOW THE VALUE OF  THE  FUND'S  SHARES
CHANGED  OVER  TIME, ASSUMING YOU HELD THE SHARES THROUGH  THE  ENTIRE
PERIOD  AND REINVESTED ALL DISTRIBUTIONS BACK INTO THE FUND.  WE  SHOW
TOTAL  RETURN  IN  TWO WAYS: ON A CUMULATIVE LONG-TERM  BASIS  AND  ON
AVERAGE HOW THE FUND MIGHT HAVE GROWN EACH YEAR OVER VARYING PERIODS.

TOTAL RETURN FOR PERIODS ENDED 9/30/95
<TABLE><CAPTION>
<S>                        <C>                 <C>                <C>
                                            LIPPER
                                        TAX EXEMPT           CONSUMER
                  FUND SHARES         MONEY MARKET              PRICE
                       AT NAV              AVERAGE              INDEX
- ----------------------------------------------------------------------
1 year                   3.16%               3.24%              2.54%
- ----------------------------------------------------------------------
5 years                  15.56               15.75              15.45
Annual average            2.94                2.97               2.91
- ----------------------------------------------------------------------
Life of fund (10/26/87)  34.88               34.76              32.87
Annual average            3.85                3.84               3.65
- ----------------------------------------------------------------------
<FN>
Performance data represent past results and should not be taken as  an
assurance of future performance. Investment returns will fluctuate. An
investment in the fund is neither insured nor guaranteed by  the  U.S.
government. There can be no assurance that the fund will  be  able  to
maintain a stable net asset value of $1.00 per share.
</TABLE>

TERMS AND DEFINITIONS

Net  asset  value (NAV) is the value of all your fund's assets,  minus
any liabilities, divided by the number of outstanding shares.

COMPARATIVE BENCHMARKS

Lipper  Tax Exempt Money Market Fund Average is an arithmetic  average
of  the  total  return  of all tax exempt money  market  mutual  funds
tracked by Lipper Analytical Services. Lipper is an independent rating
organization  for the mutual fund industry. Lipper rankings  vary  for
other  periods. The fund's holdings do not match those in  the  Lipper
Average.

CONSUMER PRICE INDEX (CPI) is a commonly used measure of inflation; it
does not represent an investment return.

<PAGE>
REPORT OF INDEPENDENT ACCOUNTANTS
For the fiscal year ended September 30, 1995

To the Trustees and Shareholders of
Putnam Tax Exempt Money Market Fund

We  have  audited the accompanying statement of assets and liabilities
of  Putnam  Tax Exempt Money Market Fund, including the  portfolio  of
investments owned, as of September 30, 1995, and the related statement
of operations for the year then ended, the statement of changes in net
assets  for each for the two years in the period then ended,  and  the
financial highlights for each of the periods 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 generally accepted auditing
standards. 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. Our procedures  included
confirmation  of  securities  owned  as  of  September  30,  1995   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  Putnam Tax Exempt Money  Market  Fund  as  of
September  30, 1995, 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
periods  indicated  therein,  in conformity  with  generally  accepted
accounting principles.

                                              Coopers & Lybrand L.L.P.
Boston, Massachusetts
November 10, 1995

<PAGE>
PORTFOLIO OF INVESTMENTS OWNED
September 30, 1995

MUNICIPAL BONDS AND NOTES (97.9%)*
<TABLE><CAPTION>
<S>                                               <C>             <C>
PRINCIPAL AMOUNT                            RATINGS**           VALUE

ARKANSAS (4.1%)
- ----------------------------------------------------------------------
 $3,000,000  University of AR Variable Rate
             Demand Notes (VRDN) 4.35s, 12/1/19
             (Credit Suisse Letter of Credit (LOC))VMIG1  $3,000,000

CALIFORNIA (10.3%)
- ----------------------------------------------------------------------
  3,500,000  CA Public Cap. Impts. Fin. Auth.
             VRDN Ser. C, 3.75s, 6/1/28 (
             National Westminster Bank USA (LOC))VMIG1      3,500,000
  4,000,000  Pomona CA Redev. Agcy. Multi-Fam.
             VRDN (Bauer Group Apts.), 4.85s,
             12/1/07                            VMIG1       4,000,000
                                                          ------------
                                                           7,500,000
COLORADO (1.1%)
- ----------------------------------------------------------------------
    800,000  Lakewood, Multi-Fam. Hsg. VRDN 4.05s,
             10/01/07 (Dai Ichi Kangyo Bank (LOC))VMIG1      800,000

GEORGIA (1.4%)
- ----------------------------------------------------------------------
  1,000,000  De Kalb Cnty. Hsg. Auth. Multi-Fam.
             VRDN (Wood Hills Apt. Project),
             4.4s, 12/01/07 (Bank of Montreal (LOC))A-1+   1,000,000

ILLINOIS (7.8%)
- ----------------------------------------------------------------------
  3,000,000  Chicago IL Tender Notes Ser. A2,
             VRDN 3.5s, 10/31/95 (Union Bank of
             Switzerland (LOC))                 VMIG1       3,000,000
  1,940,000  Elmhurst IL Rev. Notes VRDN
             (Joint Comm. Accred.), 4.4s, 7/01/18
             (The Sanwa Bank (LOC))              A-1+       1,940,000
    800,000  IL Hlth. Facs. Auth. VRDN (Midwest
             Cambridge Project), 3.9s, 1/1/15
             (National Westminster Bank (LOC))    P-1         800,000
                                                          ------------
                                                            5,740,000
INDIANA (2.1%)
- ----------------------------------------------------------------------
  1,500,000  Indianapolis IN Multi-Fam. VRDN
             (Canal Square Project), 4.25s,
             12/1/15 (Societe Generale (LOC))   VMIG1       1,500,000

IOWA (2.7%)
- ----------------------------------------------------------------------
  2,000,000  IA, Student Loan Ser. C, 6.125s,
             12/1/95 AMBAC Indemnity Corp.        AAA       2,005,826


<PAGE>
MUNICIPAL BONDS AND NOTES
PRINCIPAL AMOUNT                            RATINGS**           VALUE

KENTUCKY (8.7%)
- ----------------------------------------------------------------------
 $1,950,000  Clark Cnty. Poll. Control VRDN
             (Kentucky Pwr. Natural Resources)
             4.15s, 10/15/14                    VMIG1      $1,950,000
  1,442,000  Jefferson Cnty. Indl. Dev.
             VRDN 3.85s, 12/1/14 (Chemical Bank
             (LOC))                               A-1       1,442,000
  3,000,000  Ohio Cnty. Poll. Control VRDN
             (Big Rivers Elec.
 Corp.), 4.55s, 10/1/15, (Chemical Bank (LOC))    P-1       3,000,000
                                                          ------------
                                                            6,392,000
LOUISIANA (1.5%)
- ----------------------------------------------------------------------
  1,130,000  Orleans, Levee Dist. Impt.
             VRDN 4.5s, 11/1/14 (The Fuji Bank (LOC))           VMIG1
1,130,000

MICHIGAN (6.0%)
- ----------------------------------------------------------------------
  1,900,000  MI State Job Dev. Auth. VRDN 3.85s,
             12/1/14 (First Bank N.A. (LOC))      A-1       1,900,000
  2,500,000  MI State Underground Storage Tank
             Auth. VRDN Ser. I, 4.35s, 12/1/04
             (Canadian Imperial Bank of
             Commerce (LOC))                    VMIG1       2,500,000
                                                          ------------
                                                            4,400,000
MINNESOTA (2.1%)
- ----------------------------------------------------------------------
  1,500,000  St. Louis Park, Indl. Dev. VRDN
             (Unicare Homes Project), 3.9s, 8/1/14
             (Banque Paribus (LOC))               A-1       1,500,000

MISSISSIPPI (8.8%)
- ----------------------------------------------------------------------
  3,000,000  Jackson Cnty Poll. Control
             VRDN (Chevron USA Project), 4.4s,
             6/1/23                               P-1       3,000,000
  3,440,000  Jackson Cnty. VRDN (Wtr. System),
             3.60s, 11/1/24                     VMIG1       3,440,000
                                                          ------------
                                                           6,440,000
NEW HAMPSHIRE (2.6%)
- ----------------------------------------------------------------------
  1,900,000  NH ST Hsg. Auth. Mutli-Fam. Hsg.
             VRDN (Fairways Project), 4.35s, 1/1/24
             (General Electric Capital Corp. (LOC))VMIG1    1,900,000

NORTH DAKOTA (2.2%)
- ----------------------------------------------------------------------
  1,600,000  Mercer Cnty. Solid Waste Disp. VRDN
             (United Power Project) 3.95s,
             12/1/18                            VMIG1       1,600,000

OHIO (2.1%)
- ----------------------------------------------------------------------
  1,500,000  Cleveland OH City Sch. Dist. Antic.
             Notes 4.5s, 6/1/96 AMBAC Indemnity
             Corp.                                AAA       1,509,272


<PAGE>
MUNICIPAL BONDS AND NOTES
PRINCIPAL AMOUNT                            RATINGS**           VALUE

OKLAHOMA (3.1%)
- ----------------------------------------------------------------------
 $2,300,000  Tulsa Cnty. Indl. Auth. Hlth. Care
             VRDN (Laureate Psychiatric Project),
             3.75s, 12/15/08                     A-1+      $2,300,000

OREGON (7.8%)
- ----------------------------------------------------------------------
  2,000,000  Klamath Falls Elec. Rev. VRDN
             (Salt Caves Hydroelectric), 4.4s,
             5/1/23                              SP1+       2,000,000
  3,700,000  Portland OR Poll. Control VRDN
             (Reynolds Metals) 4.1s, 12/1/09
             (Bank of Nova Scotia (LOC))          P-1       3,700,000
                                                          ------------
                                                           5,700,000
SOUTH DAKOTA (4.0%)
- ----------------------------------------------------------------------
  2,915,000  Rapid City, Economic Dev. VRDN
             (Civic Ctr. Assn. Partnership),
             4.35s, 12/1/16 (Citibank, N.A. (LOC))P-1      2,915,000

TENNESSEE (5.5%)
- ----------------------------------------------------------------------
  4,000,000  Clarksville Pub. Bldg. Auth. VRDN 4.45s,
             6/1/24 (Nations Bank of Tennessee (LOC))             A-1
4,000,000

TEXAS (8.1%)
- ----------------------------------------------------------------------
  4,000,000  Lone Star Arpt. Imp. Auth. VRDN
             (Multi-Mode American Airlines)
             4.75s, 12/1/14 (Royal Bank of Canada
             (LOC))                             VMIG1       4,000,000
  1,900,000  Lower Neches Valley Auth. Poll.
             Control (Chevron USA Project) 3.75s,
             2/15/17                             A-1+       1,900,000
                                                          ------------
                                                           5,900,000
WISCONSIN (5.9%)
- ----------------------------------------------------------------------
  4,300,000  Alma, Poll. Cntl. VRDN (Dairyland Pwr.
             Project), 3.9s, 2/1/15 (RaboBank
             Nederland (LOC))                     P-1       4,300,000
- ----------------------------------------------------------------------
             TOTAL MUNICIPAL BONDS AND NOTES
             (cost $71,532,098)
                                                          $71,532,098
- ----------------------------------------------------------------------


<PAGE>
MUNICIPAL COMMERCIAL PAPER (28.2%)*
PRINCIPAL AMOUNT                            RATINGS**           VALUE

 $3,000,000  Burke Cnty. GA Dev. Auth. Poll.
             Control 3.7s, 10/25/95
             (Credit Suisse (LOC)                     A-1+  $3,000,000
  1,000,000  Chatom AL Indl. Dev. Poll. Control
             3.7s, 10/3/95                            A-1+   1,000,000
  2,500,000  Clairborne Cnty MS Poll. Control 3.6s,
             11/7/95                                  A-1+   2,500,000
  1,140,000  Cornell TWP. MI EIndl. Dev. 4.15s, 10/2/95
             (Credit Suisse (LOC))                    A-1+   1,140,000
  2,000,000  Gillette WY Poll. Control 3.75s,
             11/1/95 (Deutsche Bank AG (LOC))          P-1   2,000,000
  2,000,000  Hillsboro Cnty. FL Aviation Auth.
             3.75s, 10/02/95 (National Westminster
             Bank PLC (LOC))                          A-1+   2,000,000
  3,000,000  Montgomery AL Gas & Elec.
             (General Electric Project) 4.15s,
             10/31/95                                 A-1+   3,000,000
  2,000,000  Sunshine St Gov. Fing. Comm. FL 3.6s,
             11/15/95 (Union Bank of Switzerland,
             National Westminster Bank, Morgan
             Guaranty (LOC))                         VMIG1   2,000,000
  1,200,000  Toledo Lucas Cnty. OH Port Auth.
             3.85s, 11/16/95 (Bank of Nova Scotia
             (LOC))                                   A-1+   1,200,000
  1,000,000  Venango PA Indl. Dev. Auth. 3.8s,
             11/10/95 (National Westminster Bank
             (LOC))                                    P-1   1,000,000
  1,800,000  West Orange Cnty. FL Mem. Hosp. 3.8s,
             10/11/95 (RaboBank Nederland (LOC))     VMIG1   1,800,000
- ----------------------------------------------------------------------
             TOTAL MUNICIPAL COMMERCIAL PAPER
             (cost $20,640,000)                            $20,640,000
- ----------------------------------------------------------------------
             TOTAL INVESTMENTS (cost $92,172,098)***       $92,172,098
- ----------------------------------------------------------------------

<PAGE>
<FN>
NOTES
- ----------------------------------------------------------------------
*    Percentages   indicated  are  based  on  total  net   assets   of
     $73,066,188  which correspond to a net asset value per  share  of
     $1.00.

**   The  Moody's or Standard & Poor's ratings are believed to be  the
     most  recent  ratings available at September 30,  1995,  for  the
     securities  listed. Ratings are generally ascribed to  securities
     at the time of issuance. While the agencies may from time to time
     revise  such ratings, they undertake no obligation to do so,  and
     the  ratings do not necessarily represent what the agencies would
     ascribe  to  these  securities at September 30, 1995.  Securities
     rated by Putnam are indicated by "/P" and are not publicly rated.
     These  ratings  are  not  covered by the  Report  of  independent
     accountants.

     Moody's Investors Services, Inc. and Standard & Poor's Corp.  are
     the  leading  independent rating agencies  for  debt  securities.
     Moody's  uses  the  designation "Moody's  Investment  Grade,"  or
     "MIG,"  for most short-term municipal obligations, adding  a  "V"
     ("VMIG")  for  bonds  with  a demand  or  variable  feature;  the
     designation "P" is used for tax-exempt commercial paper. Standard
     & Poor's uses "SP" for notes maturing in three years or less, "A"
     for bonds with a demand or variable feature.

     Moody's Investor Services, Inc.

     MIG1/VMIG1  =  Best  quality; strong protection  of  cash  flows,
     superior liquidity and broad access to refinancing
     MIG2/VMIG2  =  High  quality, ample  protection  of  cash  flows,
     liquidity support and ability to refinance
     AAA  =  Strong  capacity to pay interest and repay principal  and
     differs from the higher rated issues only in a small degree
     P-1 = Superior capacity for repayment
     P-2 = Strong capacity for repayment

     Standard & Poor's Corp.
     SP-1 = Overwhelming safety characteristics
     SP-2 = Strong capacity to pay principal and interest
     A-1+ = Overwhelming degree of credit protection
     A-1 = Strong degree of safety
     A-2  =  Considered  strong but lacks solid  strength  for  timely
     repayment

***  The aggregate identified cost on a tax basis is the same.

     The  rates  shown on Variable Rate Demand Notes  (VRDN)  are  the
     current  interest rates at September 30, 1995, which are  subject
     to change based on the terms of the security.

     The  fund had the following industry group concentrations greater
     than  10%  on  September 30, 1995 (as a percentage of  total  net
     assets):

     Utilities       22.3%
     Housing         14.6
</TABLE>

<PAGE>
STATEMENT OF ASSETS AND LIABILITIES
September 30, 1995

<TABLE>
<S>                                                                <C>
ASSETS
- ----------------------------------------------------------------------
Investments in securities, at amortized cost (Note 1)      $92,172,098
- ----------------------------------------------------------------------
Cash                                                           287,463
- ----------------------------------------------------------------------
Interest and other receivables                                 522,777
- ----------------------------------------------------------------------
Receivable for shares of the fund sold                          89,337
- ----------------------------------------------------------------------
Receivable for securities sold                                  50,000
- ----------------------------------------------------------------------
TOTAL ASSETS                                                93,121,675
- ----------------------------------------------------------------------

LIABILITIES
- ----------------------------------------------------------------------
Distributions payable to shareholders                           23,589
- ----------------------------------------------------------------------
Payable for shares of the fund repurchased                  19,885,849
- ----------------------------------------------------------------------
Payable for compensation of Manager (Note 2)                    99,137
- ----------------------------------------------------------------------
Payable for administrative services (Note 2)                     2,045
- ----------------------------------------------------------------------
Payable for investor servicing and custodian fees (Note 2)      22,570
- ----------------------------------------------------------------------
Payable for compensation of Trustees (Note 2)                      139
- ----------------------------------------------------------------------
Other accrued expenses                                          22,158
- ----------------------------------------------------------------------
TOTAL LIABILITIES                                           20,055,487
- ----------------------------------------------------------------------

NET ASSETS                                                 $73,066,188
- ----------------------------------------------------------------------
Represented by Paid-in capital (Note 4)                    $73,066,188
- ----------------------------------------------------------------------
Net asset value, offering and redemption price per share
 ($73,066,188 divided by 73,066,188 shares)                      $1.00
- ----------------------------------------------------------------------
</TABLE>
<PAGE>
STATEMENT OF OPERATIONS
Year ended September 30, 1995

<TABLE>
<S>                                                                <C>
TAX EXEMPT INTEREST INCOME                                  $3,388,858
- ----------------------------------------------------------------------

EXPENSES:
- ----------------------------------------------------------------------
Compensation of Manager (Note 2)                               412,686
- ----------------------------------------------------------------------
Investor servicing and custodian fees (Note 2)                 188,999
- ----------------------------------------------------------------------
Compensation of Trustees (Note 2)                                3,605
- ----------------------------------------------------------------------
Reports to shareholders                                         31,335
- ----------------------------------------------------------------------
Auditing                                                        29,558
- ----------------------------------------------------------------------
Legal                                                           17,411
- ----------------------------------------------------------------------
Postage                                                         13,493
- ----------------------------------------------------------------------
Administrative services (Note 2)                                 5,147
- ----------------------------------------------------------------------
Registration fee                                                34,676
- ----------------------------------------------------------------------
Other expenses                                                   3,356
- ----------------------------------------------------------------------
TOTAL EXPENSES                                                 740,266
- ----------------------------------------------------------------------
FEES PAID INDIRECTLY (NOTE 2)                                (193,875)
- ----------------------------------------------------------------------
NET EXPENSES                                                   546,391
- ----------------------------------------------------------------------
NET INVESTMENT INCOME                                        2,842,467
- ----------------------------------------------------------------------
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS        $2,842,467
- ----------------------------------------------------------------------
</TABLE>
<PAGE>
STATEMENT OF CHANGES IN NET ASSETS

<TABLE><CAPTION>
<S>                                                  <C>           <C>
                                               YEAR ENDED SEPTEMBER 30
- ----------------------------------------------------------------------
                                                    1995         1994
- ----------------------------------------------------------------------
INCREASE (DECREASE) IN NET ASSETS
- ----------------------------------------------------------------------
Operations:
- ----------------------------------------------------------------------
Net investment income                         $2,842,467    $1,741,373
- ----------------------------------------------------------------------
NET INCREASE IN NET ASSETS RESULTING
FROM OPERATIONS                                2,842,467    1,741,373
- ----------------------------------------------------------------------
Distributions to shareholders from:
- ----------------------------------------------------------------------
Net investment income                        (2,842,467)   (1,741,373)
- ----------------------------------------------------------------------
Increase (decrease) from capital share
transactions (Note 4)                       (25,331,139)    17,321,543
- ----------------------------------------------------------------------
TOTAL INCREASE (DECREASE) IN NET ASSETS     (25,331,139)   17,321,543
- ----------------------------------------------------------------------

NET ASSETS
- ----------------------------------------------------------------------
Beginning of year                             98,397,327    81,075,784
- ----------------------------------------------------------------------
END OF YEAR                                  $73,066,188   $98,397,327
- ----------------------------------------------------------------------
</TABLE>

<PAGE>
FINANCIAL HIGHLIGHTS
(For a share outstanding throughout the period)

<TABLE><CAPTION>
<S>                           <C>       <C>     <C>       <C>      <C>
                                               YEAR ENDED SEPTEMBER 30
- ----------------------------------------------------------------------
                             1995      1994    1993      1992     1991
- ----------------------------------------------------------------------
INVESTMENT OPERATIONS
- ----------------------------------------------------------------------
Net investment income      $.0312    $.0191  $.0184 $.0297(a)$.0462(a)
- ----------------------------------------------------------------------
- ----------------------------------------------------------------------
Net realized loss on
investments                    --        --      --        --  (.0001)
- ----------------------------------------------------------------------
TOTAL FROM INVESTMENT
OPERATIONS                  .0312     .0191   .0184     .0297    .0461
- ----------------------------------------------------------------------
TOTAL DISTRIBUTIONS       (.0312)   (.0191) (.0184)   (.0297)  (.0461)
- ----------------------------------------------------------------------
TOTAL INVESTMENT RETURN AT
 NET ASSET VALUE (%)(B)      3.16      1.93    1.85      3.02     4.74
- ----------------------------------------------------------------------
NET ASSETS, END OF PERIOD
 (in thousands)           $73,066   $98,397 $81,076   $81,820 $100,077
- ----------------------------------------------------------------------
Ratio of expenses to
average net assets (%)(c)     .81       .71     .99    .87(a)   .79(a)
- ----------------------------------------------------------------------
Ratio of net investment
income to average net
assets (%)                   3.10      1.97    1.85   2.99(a)  4.62(a)
- ----------------------------------------------------------------------
<FN>
(a)  Reflects  a  voluntary expense limitation. As a  result  of  such
     limitation,  expenses of the fund for the years  ended  September
     30,  1992  and 1991 reflect per share reductions of approximately
     $0.0029 and $0.0030, respectively.

(b)  Total  investment return assumes dividend reinvestment  and  does
     not reflect the effect of sales charges.

(c)  The  ratio  of expenses to average net assets for the year  ended
     September  30, 1995 includes amounts paid through expense  offset
     arrangements. Prior period ratios exclude these amounts. See Note
     2.
</TABLE>

<PAGE>
NOTES TO FINANCIAL STATEMENTS
September 30, 1995

NOTE 1
SIGNIFICANT ACCOUNTING POLICIES

The  fund  is registered under the Investment Company Act of 1940,  as
amended, as a diversified, open-end management investment company. The
fund  seeks  as  high  a level of current income exempt  from  federal
income  tax  as  is  consistent  with  maintenance  of  liquidity  and
stability  of  principal  by  investing  primarily  in  a  diversified
portfolio of short-term tax exempt securities.

The   following  is  a  summary  of  significant  accounting  policies
consistently followed by the fund in the preparation of its  financial
statements.  The  policies are in conformity with  generally  accepted
accounting principles.

A    SECURITY  VALUATIONS   The  valuation  of  the  fund's  portfolio
instruments is determined by means of the amortized cost method as set
forth  in  Rule  2a-7 under the Investment Company Act  of  1940.  The
amortized  cost of an instrument is determined by valuing it  at  cost
originally and thereafter amortizing any discount or premium from  its
face value at a constant rate until maturity.

B   SECURITY TRANSACTIONS  Security transactions are accounted for  on
the trade date (date the order to buy or sell is executed).

C   FEDERAL TAXES  It is the policy of the fund to distribute  all  of
its  income within the prescribed time and otherwise comply  with  the
provisions  of  the  Internal  Revenue Code  applicable  to  regulated
investment  companies.  It  is  also the  intention  of  the  fund  to
distribute an amount sufficient to avoid imposition of any excise  tax
under Section 4982 of the Internal Revenue Code of 1986. Therefore, no
provision  has  been made for federal or excise taxes  on  income  and
capital gains.

D   INTEREST INCOME AND DISTRIBUTIONS TO SHAREHOLDERS  Interest income
is  recorded on the accrual basis. Income dividends (and distributions
of  capital  gains,  if  any)  are recorded  daily  by  the  fund  and
distributed monthly to the shareholders.

The  amount  and  character of income and gains to be distributed  are
determined in accordance with income tax regulations which may  differ
from generally accepted accounting principles.


NOTE 2
MANAGEMENT FEE, ADMINISTRATIVE SERVICES, AND OTHER TRANSACTIONS

Compensation   of   Putnam  Investment  Management,   Inc.,   ("Putnam
Management") the fund's Manager, a wholly-owned subsidiary of Putnam
<PAGE>
Investments, Inc. for management and investment advisory  services  is
paid  quarterly based on the average net assets of the fund. Such  fee
is  based  on  the  following annual rates: 0.45% of  the  first  $500
million  of average net assets, 0.35% of the next $500 million,  0.30%
of  the  next $500 million, and 0.25% of any amount over $1.5 billion,
subject  to  reduction in any year by the amount of certain  brokerage
commissions and fees (less expenses) received by affiliates of  Putnam
Management on the fund's portfolio transactions.

The fund reimburses Putnam Management for the compensation and related
expenses  of certain officers of the fund and their staff who  provide
administrative services to the fund. The aggregate amount of all  such
reimbursements is determined annually by the Trustees.

Trustees  of the fund receive an annual Trustee's fee of $420  and  an
additional fee for each Trustees' meeting attended. Trustees  who  are
not  interested  persons  of  Putnam  Management  and  who  serve   on
committees  of the Trustees receive additional fees for attendance  at
certain committee meetings.

During  the year ended September 30, 1995, the fund adopted a  Trustee
Fee  Deferral Plan (the "Plan") which allows the Trustees to defer the
receipt of all or a portion of Trustees fees payable on or after  July
1,  1995. The deferred fees remain in the fund and are invested in the
fund  or  in other Putnam funds until distribution in accordance  with
the Plan.

Custodial  functions  for the fund's assets  are  provided  by  Putnam
Fiduciary  Trust Company (PFTC), a wholly-owned subsidiary  of  Putnam
Investments, Inc. Investor servicing agent functions are  provided  by
Putnam Investor Services, a division of PFTC.

For  the year ended September 30, 1995, fund expenses were reduced  by
$193,875,  under  expense  offset  arrangements  with  PFTC.  Investor
servicing  and custodian fees reported in the Statement of  operations
exclude these credits. The fund could have invested a portion  of  the
assets  utilized  in  connection with the offset  arrangements  in  an
income-producing asset if it had not entered into such arrangements.

The fund has adopted a distribution plan (the "Plan") pursuant to Rule
12b-1  under  the Investment Company Act of 1940. The purpose  of  the
Plan is to compensate Putnam Mutual Funds Corp., a wholly-owned
<PAGE>
subsidiary  of  Putnam  Investments Inc., for  services  provided  and
expenses  incurred by it in distributing shares of the fund. The  Plan
provides for payments by the fund to Putnam Mutual Funds Corp.  at  an
annual  rate  up  to  0.35% of the average net assets  of  the  funds.
Currently, no payments are being made under the plan.

NOTE 3
PURCHASES AND SALES OF SECURITIES

During  the  year  ended  September  30,  1995,  purchases  and  sales
(including   maturities)  of  investment  securities  (all  short-term
obligations)  aggregated $589,549,980 and $595,396,915,  respectively.
In  determining the net gain or loss on securities sold, the  cost  of
securities has been determined on the identified cost basis.

NOTE 4
CAPITAL SHARES

At  September  30, 1995, there was an unlimited number  of  shares  of
beneficial interest authorized. Transactions in capital shares,  at  a
constant net asset value of $1.00 per share, were as follows:

<TABLE><CAPTION>
<S>                                                  <C>           <C>
                                               YEAR ENDED SEPTEMBER 30
- ----------------------------------------------------------------------
                                                    1995          1994
- ----------------------------------------------------------------------
Shares sold                                  561,608,126   608,686,024
Shares issued in connection with
reinvestment of distributions                  2,587,440     1,581,308
- ----------------------------------------------------------------------
                                             564,195,566   610,267,332
- ----------------------------------------------------------------------
Shares repurchased                         (589,526,705) (592,945,789)
- ----------------------------------------------------------------------
NET INCREASE (DECREASE)                     (25,331,139)    17,321,543
- ----------------------------------------------------------------------
</TABLE>
<PAGE>
FEDERAL TAX INFORMATION
(Unaudited)

The  fund  has  designated 100% of dividends paid from net  investment
income  during  the fiscal year as tax exempt for federal  income  tax
purposes.

The Form 1099 you receive in January 1996 will show the tax status  of
all distributions paid to your account in calendar 1995.


<PAGE>
OUR COMMITMENT TO QUALITY SERVICE

CHOOSE AWARD-WINNING SERVICE.

Putnam  Investor  Services has won the DALBAR Quality  Tested  Service
Seal  for  the  past five years, through 1994. DALBAR, an  independent
research  firm,  ran more than 10,000 tests of 38 shareholder  service
components.  In  every  category,  Putnam  outperformed  the  industry
standard.

HELP YOUR INVESTMENT GROW.

Set  up  a  systematic program for investing with as little as  $25  a
month from a Putnam fund or from your checking or savings account.*

SWITCH FUNDS EASILY.

You can move money from one account to another with the same class  of
shares  without a service charge. (This privilege is subject to change
or termination.)

ACCESS YOUR MONEY QUICKLY.

You can get checks sent regularly or redeem shares any business day at
the  then-current net asset value, which may be more or less than  the
original cost.

For  details  about  any  of  these or other  services,  contact  your
financial  advisor or call the toll-free number shown below and  speak
with a helpful Putnam representative.

To  make  an  additional investment in this or any other Putnam  fund,
contact your financial advisor or call our toll-free number: 1-800-225-
1581.


*    Regular  investing,  of course, does not guarantee  a  profit  or
     protect  against  a loss in a declining market. Investors  should
     consider  their  ability  to continue  purchasing  shares  during
     periods of low price levels.
<PAGE>
FUND INFORMATION

INVESTMENT MANAGER
Putnam Investment
Management, Inc.
One Post Office Square
Boston, MA 02109

MARKETING SERVICES
Putnam Mutual Funds Corp.
One Post Office Square
Boston, MA 02109

CUSTODIAN
Putnam Fiduciary Trust Company

LEGAL COUNSEL
Ropes & Gray

INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.

TRUSTEES
George Putnam, Chairman
William F. Pounds, Vice Chairman
Jameson Adkins Baxter
Hans H. Estin
John A. Hill
Elizabeth T. Kennan
Lawrence J. Lasser
Robert E. Patterson
Donald S. Perkins
George Putnam, III
Eli Shapiro
A.J.C. Smith
W. Nicholas Thorndike

OFFICERS
George Putnam
President

Charles E. Porter
Executive Vice President

Patricia C. Flaherty
Senior Vice President

Lawrence J. Lasser
Vice President

Gordon H. Silver
Vice President

Gary N. Coburn
Vice President

William F. McGue
Vice President

Blake E. Anderson
Vice President

Lindsey C. Strong
Vice President and Fund Manager

William N. Shiebler
Vice President

John R. Verani
Vice President

Paul M. O'Neil
Vice President

John D. Hughes
Vice President and Treasurer

Beverly Marcus
Clerk and Assistant Treasurer


This  report  is  for the information of shareholders  of  Putnam  Tax
Exempt Money Market Fund. It may also be used as sales literature when
preceded or accompanied by the current prospectus, which gives details
of sales charges, investment objectives, and operating policies of the
fund,  and  the  most  recent copy of Putnam's  Quarterly  Performance
Summary.  For more information or to request a prospectus, call  toll-
free: 1-800-225-1581.

SHARES  OF  MUTUAL  FUNDS  ARE  NOT DEPOSITS  OR  OBLIGATIONS  OF,  OR
GUARANTEED OR ENDORSED BY, ANY FINANCIAL INSTITUTION; ARE NOT  INSURED
BY  THE  FEDERAL  DEPOSIT INSURANCE CORPORATION  (FDIC),  THE  FEDERAL
RESERVE  BOARD  OR ANY OTHER AGENCY; AND INVOLVE RISK,  INCLUDING  THE
POSSIBLE LOSS OF THE PRINCIPAL AMOUNT INVESTED.
<PAGE>
PUTNAM INVESTMENTS
The Putnam Funds
One Post Office Square
Boston, Massachusetts 02109

                                                             Bulk Rate
                                                          U.S. Postage
                                                                  PAID
                                                                Putnam
                                                           Investments

20968-062  11/95
<PAGE>
APPENDIX TO FORM N-30D FILINGS TO DESCRIBE DIFFERENCES BETWEEN PRINTED
AND EDGAR-FILED TEXTS.

(1)  Rule lines for tables are omitted.

(2)  Italic typefaces is displayed in normal type.

(3)  Boldface type is displayed in capital letters.

(4)  Headers (e.g. the names of the fund) and footers (e.g. page
     numbers and OThe accompanying notes are an integral part of these
     financial statementsO) are omitted.

(5)  Because the printed page breaks are not reflected, certain
     tabular and columnar headings and symbols are displayed
     differently in this filing.

(6)  Bullet points and similar graphic symbols are omitted.

(7)  Page numbering is different.



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