EATON VANCE MUTUAL FUNDS TRUST
N-30D, 1998-03-12
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<PAGE>
 
[LOGO OF EATON VANCE APPEARS HERE]
Investing for the 21st Century


                                           [PHOTO OF THE U.S. FLAG APPEARS HERE]



Annual Report December 31, 1997



                                  EATON VANCE

[PHOTO OF STATUE OF                COMBINED 
 LIBERTY APPEARS HERE]
                                     MONEY
                                                            Cash Management Fund
                                 MARKET FUNDS 

                                    REPORT


                                                             Liquid Assets Trust


                     Global Management-Global Distribution


                                                               Money Market Fund
[PHOTO OF COLUMNS
 APPEARS HERE]

<PAGE>
 
EV Money Market Funds as of December 31, 1997

INVESTMENT UPDATE

[PHOTO OF M. DOZIER GARDNER APPEARS HERE]

M. Dozier Gardner,
President


Investment Environment
- -------------------------------------------------------------------------------
   The Economy

 .  1997 was a very good year for the U.S. economy, with gross domestic product
   (GDP) increasing at a 3.8% rate. This exceeded the 2%-2.5% forecasted at the
   beginning of the year.

 .  Inflation was very low. The Consumer Price Index declined to 1.7% from 3.3%
   in 1996, while wholesale prices fell by 1.2%, the largest decline since 1986.

 .  The growing economy continued to generate new jobs at a healthy rate, and
   unemployment remained low throughout the year, dropping to 4.7% in December
   from 5.4% in January.

 .  The combination of continued economic growth, low unemployment, and declining
   inflation has been unusual. Many economists, including Federal Reserve
   Chairman Alan Greenspan, attribute it to increasing global competition and
   higher productivity brought on by advances in technology.

   The Market

 .  Interest rates rose in the first quarter as a result of stronger-than-
   expected economic growth and a continued decline in the unemployment rate.
   The Federal Reserve raised the Fed Funds rate 0.25% to 5.5% in March,
   resulting in a corresponding increase in 60-day commercial paper rates (see
   chart).

 .  Declining federal budget deficits and falling inflation combined to produce a
   decline in long-term interest rates during the remainder of the year.
   Commercial paper rates remained stable in the middle part of the year, rising
   in the final quarter.

- --------------------------------------------------------------------------------
Mutual fund shares are not insured by the FDIC and are not deposits or other
obligations of, or guaranteed by, any depository institution. Shares are subject
to investment risks, including possible loss of principal invested.
- --------------------------------------------------------------------------------

The Portfolio
- --------------------------------------------------------------------------------

   About The Portfolio

 .  The Portfolio continues to invest only in securities of the highest quality.
   Each of its commercial paper holdings has been given the top credit rating by
   at least two nationally recognized statistical rating organizations.

 .  60-day commercial paper is a commonly used liquid investment for money market
   funds. On average, approximately 80% of the assets of the Eaton Vance Money
   Market Portfolio is invested in high-quality commercial paper.

 .  The Portfolio also invests in U.S. Government agency securities, which are
   not rated officially but are considered to be of high quality.*

 .  On average, the Portfolio's investments have maturities ranging between 30
   and 40 days.

                           [LINE GRAPH APPEARS HERE]

                    60 Day Commercial Paper Rates In 1997 

                       1.1.97        5.37
                                     5.33
                                     5.32
                                     5.33
                                     5.33
                                     5.31
                                     5.28
                                     5.26
                                     5.32
                                     5.33
                                     5.34
                                     5.48
                                     5.58
                                     5.55
                                     5.54
                                     5.55
                                     5.57
                                     5.57
                                     5.59
                                     5.59
                                     5.55
                                     5.57
                                     5.56
                                     5.55
                                     5.56
                                     5.55
                                     5.53
                                     5.49
                                      5.5
                                     5.48
                                      5.5
                                      5.5
                                     5.51
                                      5.5
                                     5.52
                                     5.51
                                     5.51
                                     5.51
                                     5.52  
                                     5.51
                                     5.52
                                     5.51
                                     5.55
                                     5.57
                                     5.58
                                     5.66
                                     5.66
                                     5.71
                                     5.76
                                     5.74
                                     5.78
                      12.31.97       5.79       

- --------------------------------------------------------------------------------
*  An investment in one of the Portfolio's money market funds is neither
insured nor guaranteed by the U.S. Government, and there can be no assurance
that the Funds will be able to maintain a stable net asset value of $1.00 per
share.

                                       2
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS 

Statements of Assets and Liabilities

As of December 31, 1997

<TABLE> 
<CAPTION> 
                                                                       Cash             Liquid          Money
                                                                  Management Fund     Assets Fund     Market Fund
- -----------------------------------------------------------------------------------------------------------------------
Assets
- -----------------------------------------------------------------------------------------------------------------------
<S>                                                               <C>                 <C>             <C> 
Investment in Cash Management Portfolio, at value (Note 1A)       $146,829,175        $ 13,148,390        $ 23,762,638
Receivable for Fund shares sold                                      1,206,136                 334             129,748
Receivable from the Administrator (Note 4)                                  --                  --              22,883
Deferred organization expenses (Note 1D)                                    --                  --              15,635
- -----------------------------------------------------------------------------------------------------------------------
Total assets                                                      $148,035,311        $ 13,148,724        $ 23,930,904
- -----------------------------------------------------------------------------------------------------------------------


Liabilities
- -----------------------------------------------------------------------------------------------------------------------
Dividends payable                                                 $    137,420        $      9,335        $     11,210
Payable for Fund shares redeemed                                     1,146,930             118,383              97,126
Payable to affiliate for Trustees' fees (Note 4)                           438                  46                  46
Accrued expenses                                                         7,279              20,233              13,820
- -----------------------------------------------------------------------------------------------------------------------
Total liabilities                                                 $  1,292,067        $    147,997        $    122,202
- -----------------------------------------------------------------------------------------------------------------------
Net Assets (represented by paid-in capital)                       $146,743,244        $ 13,000,727        $ 23,808,702
- -----------------------------------------------------------------------------------------------------------------------


Shares of Beneficial Interest Outstanding (Note 3)
- -----------------------------------------------------------------------------------------------------------------------
                                                                   146,743,244          13,000,727          23,808,702
- -----------------------------------------------------------------------------------------------------------------------


Net Asset Value, Offering and Redemption
Price Per Share (Note 6)
- -----------------------------------------------------------------------------------------------------------------------
(Net assets / shares of beneficial interest outstanding)          $       1.00        $       1.00        $       1.00
- -----------------------------------------------------------------------------------------------------------------------
</TABLE> 

                       See notes to financial statements

                                       3
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Statements of Operations

For the Year Ended December 31, 1997

<TABLE> 
<CAPTION> 

                                                                        Cash                Liquid             Money
                                                                    Management Fund       Assets Fund        Market Fund
- ------------------------------------------------------------------------------------------------------------------------------
Investment Income (Note 1B)
- ------------------------------------------------------------------------------------------------------------------------------
<S>                                                                 <C>                  <C>                 <C> 
Interest income allocated from Portfolio                             $ 5,602,128         $   897,747         $ 1,548,404
Expenses allocated from Portfolio                                       (599,796)            (96,493)           (165,828)
- ------------------------------------------------------------------------------------------------------------------------------
Net investment income from Portfolio                                 $ 5,002,332         $   801,254         $ 1,382,576
- ------------------------------------------------------------------------------------------------------------------------------

Expenses
- ------------------------------------------------------------------------------------------------------------------------------
Compensation of Trustees not members of the Administrator's          
    organization (Note 4)                                            $     2,487         $       169         $       170
Distribution and service fees (Note 5)                                        --              40,353             243,735
Transfer and dividend disbursing agent fees                              101,642              17,281              26,197
Custodian fee                                                             11,879               5,760               4,465
Legal and accounting services                                             14,450              13,889              13,952
Registration fees                                                         34,453              32,767              34,664
Amortization of organization expenses (Note 1D)                               --                  --               6,961
Printing and postage                                                      15,107               4,213               5,941
Miscellaneous                                                              5,107               7,280               3,706
- ------------------------------------------------------------------------------------------------------------------------------
Total expenses                                                       $   185,125         $   121,712         $   339,791
- ------------------------------------------------------------------------------------------------------------------------------
Deduct --
    Allocation of expenses to the Administrator (Note 4)             $        --         $        --         $    22,883
- ------------------------------------------------------------------------------------------------------------------------------
Total expense reductions                                             $        --         $        --         $    22,883
- ------------------------------------------------------------------------------------------------------------------------------

Net expenses                                                         $   185,125         $   121,712         $   316,908
- ------------------------------------------------------------------------------------------------------------------------------

Net investment income                                                $ 4,817,207         $   679,542         $ 1,065,668
- ------------------------------------------------------------------------------------------------------------------------------ 
</TABLE> 
                       See notes to financial statements

                                       4
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Statements of Changes in Net Assets

For the Year Ended December 31, 1997

<TABLE> 
<CAPTION> 
                                                                             Cash                Liquid              Money
Increase (Decrease) in Net Assets                                       Management Fund        Assets Fund        Market Fund
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                                      <C>                 <C>                 <C> 
From operations --
    Net investment income                                                $   4,817,207       $     679,542       $   1,065,668
- -------------------------------------------------------------------------------------------------------------------------------
Distributions to shareholders (Note 2) --
    From net investment income                                           $  (4,817,207)      $    (679,542)      $  (1,065,668)
- -------------------------------------------------------------------------------------------------------------------------------
Transactions in shares of beneficial interest (Note 3) --
    Proceeds from sale of shares                                         $ 553,471,378       $     138,284       $ 224,831,973
    Net asset value of shares issued to shareholders in payment              
       of distributions declared                                             2,926,310             394,175             646,729
    Cost of shares redeemed                                               (561,345,354)         (7,442,068)       (232,920,194)
- -------------------------------------------------------------------------------------------------------------------------------

Net decrease in net assets from Fund share transactions                  $  (4,947,666)      $  (6,909,609)      $  (7,441,492)
- -------------------------------------------------------------------------------------------------------------------------------

Net decrease in net assets                                               $  (4,947,666)      $  (6,909,609)      $  (7,441,492)
- -------------------------------------------------------------------------------------------------------------------------------


Net Assets
- -------------------------------------------------------------------------------------------------------------------------------
At beginning of year                                                     $ 151,690,910       $  19,910,336       $  31,250,194
- -------------------------------------------------------------------------------------------------------------------------------
At end of year                                                           $ 146,743,244       $  13,000,727       $  23,808,702
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE> 

                       See notes to financial statements

                                       5
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Statements of Changes in Net Assets

For the Year Ended December 31, 1996
<TABLE> 
<CAPTION> 
                                                                               Cash              Liquid             Money
Increase (Decrease) in Net Assets                                         Management Fund      Assets Fund       Market Fund
- ------------------------------------------------------------------------------------------------------------------------------
<S>                                                                       <C>                <C>                <C> 
From operations --
     Net investment income                                                $   6,465,054      $   1,072,334      $     918,209
- ------------------------------------------------------------------------------------------------------------------------------
Distributions to shareholders (Note 2) --
     From net investment income                                           $  (6,465,054)     $  (1,072,334)     $    (918,209)
- ------------------------------------------------------------------------------------------------------------------------------
Transactions in shares of beneficial interest (Note 3) --
     Proceeds from sale of shares                                         $ 614,892,840      $      49,292      $ 474,121,094
     Net asset value of shares issued to shareholders in
       payment of distributions declared                                      4,425,531            660,755            490,977
     Cost of shares redeemed                                               (622,878,579)       (14,825,975)      (456,313,118)
- ------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net assets from Fund share transactions        $  (3,560,208)     $ (14,115,928)     $  18,298,953
- ------------------------------------------------------------------------------------------------------------------------------

Net increase (decrease) in net assets                                     $  (3,560,208)     $ (14,115,928)     $  18,298,953
- ------------------------------------------------------------------------------------------------------------------------------


Net Assets
- ------------------------------------------------------------------------------------------------------------------------------
At beginning of year                                                      $ 155,251,118      $  34,026,264      $  12,951,241
- ------------------------------------------------------------------------------------------------------------------------------
At end of year                                                            $ 151,690,910      $  19,910,336      $  31,250,194
- ------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
                       See notes to financial statements

                                       6
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Financial Highlights
<TABLE> 
<CAPTION> 


                                                                                         Cash Management Fund
                                                                  -----------------------------------------------------------------
                                                                                         Year Ended December 31,
                                                                  -----------------------------------------------------------------
                                                                  1997          1996          1995          1994           1993
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>           <C>            <C>          <C>            <C> 
Net asset value -- Beginning of year                           $     1.00    $     1.00    $     1.00    $     1.00    $     1.00
- ------------------------------------------------------------------------------------------------------------------------------------

Income from operations
- ------------------------------------------------------------------------------------------------------------------------------------
Net investment income                                          $   0.0478    $   0.0470    $   0.0522    $   0.0345    $   0.0251
- ------------------------------------------------------------------------------------------------------------------------------------

Less distributions
- ------------------------------------------------------------------------------------------------------------------------------------
From net investment income                                     $  (0.0478)   $  (0.0470)   $  (0.0522)   $  (0.0345)   $  (0.0251)
- ------------------------------------------------------------------------------------------------------------------------------------

Net asset value -- End of year                                 $     1.00    $     1.00    $     1.00    $     1.00    $     1.00
- ------------------------------------------------------------------------------------------------------------------------------------

Total Return/(1)/                                                    4.89%         4.82%         5.35%         3.49%         2.54%
- ------------------------------------------------------------------------------------------------------------------------------------

Ratios/Supplemental Data
- ------------------------------------------------------------------------------------------------------------------------------------
Net assets, end of year (000 omitted)                          $  146,743    $  151,691    $  155,251    $  111,622    $  112,200
Ratio of expenses to average daily net assets/(2)/                   0.78%         0.74%         0.74%         0.84%         0.67%
Ratio of net investment income to average daily net assets           4.79%         4.70%         5.22%         3.40%         2.51%
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
/(1)/  Total return is calculated assuming a purchase at the net asset value on
       the first day and a sale at the net asset value on the last day of each
       period reported. Dividends and distributions, if any, are assumed to be
       reinvested at the net asset value on the ex-date.

/(2)/  Includes the Fund's share of the Portfolio's allocated expenses for the
       period while the Fund was investing directly in the Portfolio.

                       See notes to financial statements

                                       7
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Financial Highlights

<TABLE> 
<CAPTION> 
                                                                               Liquid Assets Fund
                                              -----------------------------------------------------------------------------------
                                                                     Year Ended December 31,                          Year Ended
                                              --------------------------------------------------------------------    March 31, 
                                                 1997         1996          1995          1994           1993*        1993++
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                           <C>           <C>          <C>           <C>            <C>            <C> 
Net asset value -- Beginning of period        $     1.00    $    1.00    $     1.00    $     1.00     $     1.00     $     1.00
- ---------------------------------------------------------------------------------------------------------------------------------


Income from operations
- ----------------------------------------------------------------------------------------------------------------------------------
Net investment income                         $   0.0420    $  0.0432    $   0.0505    $   0.0328     $   0.0113     $   0.0217
- ---------------------------------------------------------------------------------------------------------------------------------


Less distributions
- ---------------------------------------------------------------------------------------------------------------------------------
From net investment income                    $  (0.0420)   $ (0.0432)   $  (0.0505)   $  (0.0328)    $  (0.0113)    $  (0.0217)
- ---------------------------------------------------------------------------------------------------------------------------------

Net asset value -- End of period              $     1.00    $    1.00    $     1.00    $     1.00     $     1.00     $     1.00
- ---------------------------------------------------------------------------------------------------------------------------------

Total Return /(1)/                                  4.29%        4.41%         5.16%         3.29%          1.14%          2.35%
- ---------------------------------------------------------------------------------------------------------------------------------


Ratios/Supplemental Data+
- ---------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (000 omitted)       $   13,001    $  19,910    $   34,026    $  118,599     $   10,566     $   18,553
Ratio of net expenses to average daily
     net assets /(2)/                               1.35%        1.13%         0.91%         0.94%          1.49%+         0.92%
Ratio of net investment income to average 
     daily net assets                               4.21%        4.31%         5.11%         3.55%          1.66%+         2.33%
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
+   For the periods presented below, the operating expenses of the Fund reflect
    an allocation of expenses to the Administrator. Had such action not been
    taken, the ratios and net investment income per share would have been as
    follows:

<TABLE> 
<CAPTION> 

Ratios (As a percentage of 
     average daily net assets):
<S>                                                   <C>          <C>           <C>           <C>    <C>            <C> 
     Expenses /(2)/                                   --           --            --            --           1.80%+         1.42%
     Net investment income                            --           --            --            --           1.35%+         1.85%
Net investment income per share                       --           --            --            --     $   0.0092     $   0.0171
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
+     Annualized.

++    Audited by the Fund's previous auditors.

*     For the nine months ended December 31, 1993. The Liquid Assets Fund
      changed its fiscal year end from March 31 to December 31, effective
      December 31, 1993.

/(1)/ Total return is calculated assuming a purchase at the net asset value on
      the first day and a sale at the net asset value on the last day of each
      period reported. Dividends and distributions, if any, are assumed to be
      reinvested at the net asset value on the ex-date. Total return is not
      computed on an annualized basis.

/(2)/ Includes the Fund's share of the Portfolio's allocated expenses for the
      period while the Fund was investing directly in the Portfolio.

                       See notes to financial statements

                                       8
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Financial Highlights

<TABLE> 
<CAPTION> 
                                                                                                 Money Market Fund
                                                                                   --------------------------------------------
                                                                                               Year Ended December 31,
                                                                                   --------------------------------------------
                                                                                      1997            1996          1995*
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                <C>             <C>            <C> 
Net asset value -- Beginning of period                                             $     1.00      $     1.00     $     1.00
- -------------------------------------------------------------------------------------------------------------------------------


Income from operations
- -------------------------------------------------------------------------------------------------------------------------------
Net investment income                                                              $   0.0381      $   0.0370     $   0.0312
- -------------------------------------------------------------------------------------------------------------------------------


Less distributions
- -------------------------------------------------------------------------------------------------------------------------------
From net investment income                                                         $  (0.0381)     $  (0.0370)    $  (0.0312)
- -------------------------------------------------------------------------------------------------------------------------------

Net asset value -- End of period                                                   $     1.00      $     1.00     $     1.00
- -------------------------------------------------------------------------------------------------------------------------------

Total Return /(1)/                                                                       3.88%           3.77%          3.17%
- -------------------------------------------------------------------------------------------------------------------------------


Ratios/Supplemental Data++
- -------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (000 omitted)                                            $   23,809      $   31,250     $   12,951
Ratio of net expenses to average daily net assets /(2)/                                  1.73%           1.73%          1.68%+
Ratio of net investment income to average daily net assets                               3.83%           3.70%          4.19%+
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
++ The operating expenses of the Fund may reflect an allocation of expenses to
   the Administrator. Had such action not been taken, the ratios and net
   investment income per share would have been as follows:

<TABLE> 
<CAPTION> 
Ratios (As a percentage of average daily net assets):
<S>                                                                                <C>             <C>            <C> 
     Expenses /(2)/                                                                      1.82%           1.76%          1.85%+
     Net investment income                                                               3.74%           3.66%          4.03%+
Net investment income per share                                                    $   0.0372      $   0.0367     $   0.0300
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
+     Annualized.

*     For the period from the start of business, April 5, 1995, to December 31,
      1995.

/(1)/ Total return is calculated assuming a purchase at the net asset value on
      the first day and a sale at the net asset value on the last day of each
      period reported. Dividends and distributions, if any, are assumed to be
      reinvested at the net asset value on the payable date. Total return is not
      computed on an annualized basis.

/(2)/ Includes the Fund's share of the Portfolio's allocated expenses for the
      period while the Fund was investing directly in the Portfolio.

                       See notes to financial statements

                                       9

<PAGE>
 
EV Money Market Funds as of December 31, 1997

NOTES TO FINANCIAL STATEMENTS


1  Significant Accounting Policies
   -----------------------------------------------------------------------------
   Eaton Vance Mutual Funds Trust (the Trust) is an entity of the type commonly
   known as a Massachusetts business trust and is registered under the
   Investment Company Act of 1940 as amended (1940 Act), as an open-end
   management investment company. The Trust presently consists of fifteen
   Series, three of which are included in these financial statements. They
   include Eaton Vance Cash Management Fund ("Cash Management Fund"), Eaton
   Vance Liquid Assets Fund ("Liquid Assets Fund") and Eaton Vance Money Market
   Fund ("Money Market Fund") (individually, the "Fund", collectively the
   "Funds") each of which is registered under the 1940 Act, as diversified,
   open-end management investment companies seeking high income consistent with
   the preservation of capital and maintenance of liquidity.

   The Funds invest all of their investable assets in interests in the Cash
   Management Portfolio (the Portfolio), a New York Trust, having the same
   investment objective as the Funds. The value of each Fund's investment in the
   Portfolio reflects the Fund's proportionate interest in the net assets of the
   Portfolio (79.9% for Cash Management Fund, 7.1% for Liquid Assets Fund and
   13.0% for Money Market Fund at December 31, 1997). The performance of each
   Fund is directly affected by the performance of the Portfolio. The financial
   statements of the Portfolio, including the portfolio of investments, are
   included elsewhere in this report and should be read in conjunction with the
   Fund's financial statements. The following is a summary of significant
   accounting policies consistently followed by the Funds in the preparation of
   their financial statements. The policies are in conformity with generally
   accepted accounting principles.

   A Investment Valuation -- Valuation of securities by the Portfolios is
   discussed in Note 1A of the Portfolio's Notes to Financial Statements which
   are included elsewhere in this report.

   B Income -- The Funds' net investment income consists of the Funds' pro rata
   share of the net investment income of the Portfolio, less all actual and
   accrued expenses of each Fund determined in accordance with generally
   accepted accounting principles.

   C Federal Taxes -- The Funds' policy is to comply with the provisions of the
   Internal Revenue Code applicable to regulated investment companies and to
   distribute to shareholders each year all of its taxable income, including any
   net realized gain on investment transactions. Accordingly, no provision for
   federal income or excise tax is necessary. At December 31, 1997, Liquid
   Assets Fund, for federal income tax purposes, had a capital loss carryover of
   $6,926, which will reduce the Fund's taxable income arising from future net
   realized gain on investment transactions, if any, to the extent permitted by
   the Internal Revenue Code, and thus will reduce the amount of the
   distributions to shareholders which would otherwise be necessary to relieve
   the Fund of any liability for federal income. Such capital loss carryover
   will expire on December 31, 2001.

   D Deferred Organization Expenses -- Costs incurred by the Money Market Fund
   in connection with its organization, including registration costs, are being
   amortized on the straight-line basis over five years.

   E Use of Estimates -- The preparation of financial statements in conformity
   with generally accepted accounting principles requires management to make
   estimates and assumptions that affect the reported amounts of assets and
   liabilities at the date of the financial statements and the reported amounts
   of income and expense during the reporting period. Actual results could
   differ from those estimates.

   F Other -- Investment transactions are accounted for on a trade date basis.

2  Distributions to Shareholders
   -----------------------------------------------------------------------------
   The net investment income of each Fund is determined daily and substantially
   all of the net income so determined is declared as a dividend to shareholders
   of record at the time of declaration. Dividends are paid monthly. Dividends
   are paid in the form of additional shares or, at the election of the
   shareholder, in cash.

   The Funds distinguish between distributions on a tax basis and a financial
   reporting basis. Generally accepted accounting principles require that only
   distributions in excess of tax basis earnings and profits be reported in the
   financial statements as a return of capital. Differences in the recognition
   or classification of income between the financial statements and tax earnings
   and profits which result in temporary over distributions for financial
   statement purposes are classified as distributions in excess of net
   investment income or accumulated net realized gains. Permanent differences
   between book and tax accounting relating to distributions are reclassified to
   paid-in capital.

                                      10
<PAGE>
 
EV Money Market Funds as of December 31, 1997

NOTES TO FINANCIAL STATEMENTS CONT'D


3  Shares of Beneficial Interest
   ---------------------------------------------------------------------------
   The Funds' Declaration of Trust permits the Trustees to issue an unlimited
   number of full and fractional shares of beneficial interest, with no par
   value. Transactions in Fund shares were as follows:


                                              Cash Management Fund
                                        -----------------------------------
                                              Year Ended December 31,
                                        -----------------------------------
                                            1997                  1996
                                        -----------------------------------
       Sales                            553,471,378           614,892,840
       Issued to shareholders electing
         to receive payments of           
         distributions in Fund shares     2,926,310             4,425,531   
       Redemptions                     (561,345,354)         (622,878,579)
     ----------------------------------------------------------------------
       Net decrease                      (4,947,666)           (3,560,208)
     ----------------------------------------------------------------------


                                                Liquid Assets Fund
                                        -----------------------------------
                                              Year Ended December 31,
                                        -----------------------------------
                                              1997                1996
                                        -----------------------------------
       Sales                                138,284                49,292
       Issued to shareholders electing
         to receive payments of             
         distributions in Fund shares       394,175               660,755

       Redemptions                       (7,442,068)          (14,825,975)
     ----------------------------------------------------------------------
       Net decrease                      (6,909,609)          (14,115,928)
     ----------------------------------------------------------------------

                                                Money Market Fund
                                        -----------------------------------
                                              Year Ended December 31,
                                        -----------------------------------
                                            1997                 1996
                                        -----------------------------------
       Sales                            224,831,973           474,121,094
       Issued to shareholders electing
         to receive payments of             
         distributions in Fund shares       646,729               490,977  
       Redemptions                     (232,920,194)         (456,313,118)
      ----------------------------------------------------------------------
       Net increase (decrease)           (7,441,492)           18,298,953
      ----------------------------------------------------------------------

4  Transactions with Affiliates
   -----------------------------------------------------------------------------
   Eaton Vance Management (EVM) serves as the administrator of the Funds, but
   receives no compensation. The Portfolio has engaged Boston Management and
   Research (BMR), a subsidiary of EVM, to render investment advisory services.
   See Note 2 of the Portfolio's Notes to Financial Statements which are
   included elsewhere in this report. To enhance the net income of the Money
   Market Fund for the year ended December 31, 1997, $22,883 of expenses related
   to the operation of the Fund were allocated to EVM. Except as to Trustees of
   the Funds and the Portfolio who are not members of EVM's or BMR's
   organization, officers and Trustees receive remuneration for their services
   to each fund out of such investment adviser fee. Certain of the officers and
   Trustees of the Funds and Portfolio are officers and directors/trustees of
   the above organizations (Note 5).

5  Distribution Plan
   -----------------------------------------------------------------------------
   Money Market Fund and Liquid Assets Fund have adopted distribution plans
   (individually the "Plan" and collectively the "Plans") pursuant to Rule 12b-1
   under the 1940 Act. The Plan for Money Market Fund requires the Fund to pay
   the Principal Underwriter, Eaton Vance Distributors, Inc. (EVD), amounts
   equal to 0.75% of the Fund's average daily net assets, for providing ongoing
   distribution services and facilities to the Fund. The Fund will automatically
   discontinue payments to EVD during any period in which there are no
   outstanding Uncovered Distribution Charges. The Plan for Liquid Assets Fund
   does not provide for annual payments to EVD for providing such services and
   facilities, however the Plan does require the Fund to calculate outstanding
   Uncovered Distribution Charges. Each Fund's balance of Uncovered Distribution
   Charges is equivalent to the sum of (i) 6.25% (5% for Liquid Assets Fund) of
   the aggregate amount received by the Fund for share sold plus (ii)
   distribution fees calculated by applying the rate of 1% over the prevailing
   prime rate to the outstanding balance of Uncovered Distribution Charges of
   EVD reduced by the aggregate amount of contingent deferred sales charges
   (Note 6) and amounts theretofore paid to EVD. For the year ended December 31,
   1997, Money Market Fund paid $209,055 to EVD, representing 0.75% of the
   Fund's average daily net assets. At December 31, 1997, the amount of
   Uncovered Distribution Charges of EVD calculated under the Plan for Money
   Market Fund and Liquid Assets Fund were approximately $3,974,000 and
   $2,186,000, respectively.

                                      11
<PAGE>
 
EV Money Market Funds as of December 31, 1997 

NOTES TO FINANCIAL STATEMENTS CONT'D


   In addition, the Plan authorized the Funds to make payments of service fees
   to the Principal Underwriter, Authorized Firms and other persons in amounts
   not exceeding 0.25% of each Fund's average daily net assets. The Trustees of
   the Funds had initially implemented the Plans by authorizing the Funds to
   make quarterly service fee payments to the Principal Underwriter and
   Authorized Firms in amounts not expected to exceed 0.15% (0.25% for Liquid
   Assets Fund) per annum of each Fund's average daily net assets based on the
   value of the Fund shares sold by such persons and remaining outstanding for
   at least one year. For the year ended December 31, 1997, Money Market Fund
   and Liquid Assets Fund paid service fees to EVD and Authorized Firms in the
   amount of $34,680 and $40,353 respectively. Service fee payments are made for
   personal services and/or maintenance of shareholder accounts. Service fees
   paid to EVD and Authorized Firms were separate and distinct from the sales
   commissions and distribution fees payable by the Fund to EVD, and as such are
   not subject to automatic discontinuance when there are no outstanding
   Uncovered Distribution Charges of EVD.

   Certain of the officers and Trustees of the Funds are officers or directors
   of EVD.

6  Contingent Deferred Sales Charge
   ----------------------------------------------------------------------------
   A contingent deferred sales charges (CDSC) is imposed on any redemption of
   shares from either Money Market Fund or Liquid Assets Fund made within six
   years of purchase. Generally, the CDSC is based upon the lower of the net
   asset value at date of redemption or date of purchase. No charge is levied on
   shares acquired by reinvestment of dividends or capital gains distributions.
   The CDSC is imposed at rates that begin 5% in the case of redemptions in the
   first and second year after purchase, declining one percentage point
   subsequent year. No CDSC is levied on shares which have been sold to EVM or
   its affiliates or to their respective employees or clients. CDSC charges are
   paid to EVD to reduce the amount of Uncovered Distribution Charges calculated
   under the Fund's Distribution Plan. CDSC charges received when no Uncovered
   Distribution Charges exist will be credited to the Fund. EVD received
   approximately $257,000 and $49,000 of CDSC paid by shareholders for the year
   ended December 31, 1997 for the Money Market Fund and Liquid Assets Fund,
   respectively.

7  Investment Transactions
   ----------------------------------------------------------------------------
   Increases and decreases in the Funds' investment in the Portfolio for the
   year ended December 31, 1997 were as follows:

    Cash Management Fund                                       
   ---------------------------------------------------------------------------
    Increases                                                     $556,548,113
    Decreases                                                      565,176,682
                                        
    Liquid Assets Fund                  
   ---------------------------------------------------------------------------
    Increases                                                     $  173,430
    Decreases                                                      7,825,713
                                        
    Money Market Fund                   
   ---------------------------------------------------------------------------
    Increases                                                     $234,991,617
    Decreases                                                      233,816,627

                                      12
<PAGE>
 
EV Money Market Funds as of December 31, 1997

REPORT OF INDEPENDENT ACCOUNTANTS




To the Trustees and Shareholders
of Eaton Vance Mutual Funds Trust:
- -------------------------------------------------------------------------------
We have audited the accompanying statements of assets and liabilities of Eaton
Vance Cash Management Fund, Eaton Vance Liquid Assets Fund, and Eaton Vance
Money Market Fund (certain of the series constituting Eaton Vance Mutual Funds
Trust) as of December 31, 1997, and the related statements of operations for
year then ended, the statements of changes in net assets for each of the two
years in the period then ended and the financial highlights for each period
indicated on the statements herein. 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. 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 each
of the aforementioned series of Eaton Vance Mutual Funds Trust as of December
31, 1997, the results of their operations for the year then ended, the changes
in their net assets for the two years in the period then ended and their
financial highlights for each of the periods indicated on the statements herein,
in conformity with generally accepted accounting principles.

                                  COOPERS & LYBRAND L.L.P.
                                  Boston, Massachusetts
                                  February 6, 1998

                                      13
<PAGE>
 
Cash Management Portfolio as of December 31, 1997

PORTFOLIO OF INVESTMENTS


Commercial Paper -- 48.2%

<TABLE> 
<CAPTION> 
Ratings (Unaudited)
- ----------------------  Principal
                        Amount
            Standard    (000's
Moody's     & Poor's    omitted)      Security                          Value
- -----------------------------------------------------------------------------------------
<S>         <C>         <C>           <C>                               <C> 
Agricultural Services -- 1.3%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,500      Cargill, Inc., 5.65%, 3/23/98     $     2,468,219
- -----------------------------------------------------------------------------------------
                                                                        $     2,468,219
- -----------------------------------------------------------------------------------------

Banking and Finance -- 19.6%
- -----------------------------------------------------------------------------------------
 P-1         A-1        $  2,500      American Express Credit Corp.,
                                      5.83%, 1/7/98                     $     2,497,571
 P-1         A-1+          1,400      Asset Securitization Coop.
                                      Corp., 5.61%, 1/8/98/(1)/               1,398,473
 P-1         A-1+          2,000      Asset Securitization Coop.
                                      Corp., 5.73%, 2/26/98/(1)/              1,982,173
 P-1         A-1+          2,700      Associates Corp. of No.
                                      America, 5.66%, 2/11/98                 2,682,595
 P-1         A-1+          1,600      Associates Corp. of No.
                                      America, 5.68%, 2/13/98                 1,589,145
 P-1         A-1+          2,900      Central Corporate Credit
                                      Union, 5.90%, 1/12/98                   2,894,772
 P-1         A-1+          2,000      CIESCO, 5.60%, 1/30/98                  1,990,978
 P-1         A-1+          2,000      CIESCO, 5.65%, 2/10/98                  1,987,445
 P-1         A-1+          2,500      CIT Group Holdings, Inc.,
                                      5.83%, 1/21/98                          2,491,903
 P-1         A-1+          2,500      Corporate Asset Funding Co.,
                                      5.77%, 2/13/98                          2,482,770
 P-1         A-1           2,000      Corporate Receivables Corp.,
                                      5.875%, 1/14/98(2)                      1,995,757
 P-1         A-1+          2,000      CXC, Inc., 5.73%, 1/16/98/(1)/          1,995,225
 P-1         A-1+          1,500      Delaware Funding Corp.,
                                      5.63%, 1/15/98/(1)/                     1,496,716
 P-1         A-1+          1,000      Delaware Funding Corp.,
                                      5.90%, 1/30/98/(2)/                       995,247
 P-1         A-1+          4,000      Norwest Financial, Inc.,
                                      5.53%, 2/12/98                          3,974,193
 P-1         A-1+          3,500      U.S. Central Credit Union,
                                      5.75%, 2/17/98                          3,473,726
- -----------------------------------------------------------------------------------------
                                                                        $    35,928,689
- -----------------------------------------------------------------------------------------

Business Products and Services -- 1.3%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,300      Pitney Bowes Credit Corp.,
                                      5.85%, 1/21/98                    $     2,292,525
- -----------------------------------------------------------------------------------------
                                                                        $     2,292,525
- -----------------------------------------------------------------------------------------

Chemicals -- 1.4%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $    630      E.I. Dupont de Nemours & Co.,
                                      5.51%, 1/12/98                    $       628,940
 P-1         A-1+          2,000      E.I. Dupont de Nemours & Co.,
                                      5.73%, 2/6/98/(2)/                      1,988,540
- -----------------------------------------------------------------------------------------
                                                                        $     2,617,480
- -----------------------------------------------------------------------------------------

Communications Equipment -- 3.3%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,000      Ameritech Corp.,
                                      5.55%, 1/26/98/(1)/               $     1,992,291
 P-1         A-1+          1,700      Ameritech Corp.,
                                      5.72%, 2/4/98/(1)/                      1,690,816
 P-1         A-1+          2,500      AT&T Corp., 5.65%, 3/27/98              2,466,649
- -----------------------------------------------------------------------------------------
                                                                        $     6,149,756
- -----------------------------------------------------------------------------------------

Electric Utilities -- 2.9%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,800      National Rural Utilities Coop.
                                      Finance Corp., 5.58%, 1/15/98     $     2,793,924
 P-1         A-1+          2,500      Teco Finance, Inc.,
                                      5.72%, 2/18/98/(1)/                     2,480,933
- -----------------------------------------------------------------------------------------
                                                                        $     5,274,857
- -----------------------------------------------------------------------------------------

Electrical and Electronic Equipment -- 3.6%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,000      General Electric Capital
                                      Corp., 5.69%, 2/20/98             $     1,984,194
 P-1         A-1+          1,500      General Electric Capital
                                      Corp., 5.70%, 1/28/98                   1,493,588
 P-1         A-1+          1,400      General Electric Capital
                                      Corp., 5.70%, 3/20/98                   1,382,710
 P-1         A-1+          1,765      Motorola Credit Corp.,
                                      5.70%, 2/24/98                          1,749,909
- -----------------------------------------------------------------------------------------
                                                                        $     6,610,401
- -----------------------------------------------------------------------------------------
</TABLE> 

                       See notes to financial statements

                                      14
<PAGE>
 
Cash Management Portfolio as of December 31, 1997

PORTFOLIO OF INVESTMENTS CONT'D


<TABLE> 
<CAPTION> 
Ratings (Unaudited)
- ----------------------  Principal
                        Amount
            Standard    (000's
Moody's     & Poor's    omitted)      Security                          Value
- -----------------------------------------------------------------------------------------
<S>         <C>         <C>           <C>                               <C> 
Food and Beverages -- 2.2%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  4,100      Coca-Cola Co.,
                                      5.51%, 1/12/98/(1)/               $     4,093,097
- -----------------------------------------------------------------------------------------
                                                                        $     4,093,097
- -----------------------------------------------------------------------------------------

Household Products -- 0.8%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  1,460      Procter & Gamble Co.,
                                      5.70%, 3/11/98                    $     1,444,050
- -----------------------------------------------------------------------------------------
                                                                        $     1,444,050
- -----------------------------------------------------------------------------------------

Insurance -- 8.8%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,500      AI Credit Corp., 5.55%, 1/13/98   $     2,495,375
 P-1         A-1+          1,900      AI Credit Corp., 5.55%, 1/13/98         1,896,485
 P-1         A-1           2,500      American General Corp.,
                                      5.75%, 2/27/98                          2,477,240
 P-1         A-1+          2,000      APC Funding Corp.,
                                      5.75%, 3/3/98                           1,980,514
 P-1         A-1+          1,620      MetLife Funding Inc.,
                                      5.67%, 1/20/98                          1,615,152
 P-1         A-1+          1,459      MetLife Funding Inc.,
                                      5.75%, 3/17/98                          1,441,522
 P-1         A-1+            950      MetLife Funding Inc.,
                                      5.90%, 2/5/98                             944,551
 P-1         A-1           1,000      Prudential Funding Corp.,
                                      5.82%, 1/16/98                            997,575
 P-1         A-1+          1,000      USAA Capital Corp.,
                                      5.64%, 2/27/98                            991,070
 P-1         A-1+          1,400      USAA Capital Corp.,
                                      5.76%, 1/27/98                          1,394,176
- -----------------------------------------------------------------------------------------
                                                                        $    16,233,660
- -----------------------------------------------------------------------------------------

Oil -- 1.7%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $    785      Chevron Oil Finance Co.,
                                      5.95%, 1/9/98                     $       783,962
 P-1         A-1+          2,380      Exxon Imperial U.S., Inc.,
                                      5.85%, 1/8/98/(1)/                      2,377,293
- -----------------------------------------------------------------------------------------
                                                                        $     3,161,255
- -----------------------------------------------------------------------------------------

Pharmaceutical -- 1.3%
- -----------------------------------------------------------------------------------------
 P-1         A-1+       $  2,315      Novartis Finance Corp.,
                                      5.85%, 1/9/98/(1)/                $     2,311,991
- -----------------------------------------------------------------------------------------
                                                                        $     2,311,991
- -----------------------------------------------------------------------------------------

Total Commercial Paper, at value
     (identified cost $88,585,980)                                      $    88,585,980
- -----------------------------------------------------------------------------------------
</TABLE> 

                       See notes to financial statements

                                      15
<PAGE>
 
Cash Management Portfolio as of December 31, 1997

PORTFOLIO OF INVESTMENTS CONT'D


U.S. Government Obligations -- 51.8%


        Principal
        Amount
        (000's
        omitted)      Security                             Value
- --------------------------------------------------------------------------
        $ 60,000      FHLMC Discount Notes,
                      5.70%, 1/5/98                        $ 59,961,999
          10,000      FHLMC Discount Notes,
                      5.70%, 1/12/98                          9,982,582
           1,330      FNMA Discount Notes,
                      5.46%, 1/20/98                          1,326,168
           1,000      FHLB Discount Notes,
                      5.46%, 1/23/98                            996,664
           5,000      FHLMC Discount Notes,
                      5.49%, 1/23/98                          4,983,225
           5,500      FNMA Discount Notes,
                      5.48%, 1/29/98                          5,476,557
           5,000      FHLMC Discount Notes,
                      5.65%, 2/19/98                          4,961,549
           3,000      FNMA Discount Notes,
                      5.64%, 2/25/98                          2,974,150
           2,600      FNMA Discount Notes,
                      5.58%, 3/6/98                           2,574,208
           1,950      FNMA Discount Notes,
                      5.60%, 3/30/98                          1,923,307
- --------------------------------------------------------------------------------

Total U.S. Government Obligations, at value
     (identified cost $95,160,409)                         $ 95,160,409
- --------------------------------------------------------------------------------

Total Investments -- 100.0%
     (identified cost $183,746,389)                        $183,746,389
- --------------------------------------------------------------------------------

Other Assets, Less Liabilities -- 0%                       $     (6,186)
- --------------------------------------------------------------------------------


Net Assets -- 100%                                         $183,740,203
- --------------------------------------------------------------------------------


FHLB-Federal Home Loan Bank
FHLMC-Federal Home Mortgage Corporation (Freddie Mac)
FNMA-Federal National Mortgage Association (Fannie Mae)

/(1)/A security which has been issued under section 4(2) of the Securities Act
     of 1933 and is generally regarded as restricted and illiquid. This security
     may be resold in transactions exempt from registration or to the public if
     the security is registered. All such securities held have been deemed by
     the Portfolio's Trustees to be liquid and were purchased with the
     expectation that resale would not be necessary. At December 31, 1997, the
     value of these securities amounted to $21,819,008 or 11.9% of the
     Portfolio's net assets.
/(2)/Security exempt from registration under Rule 144A of the Securities Act of
     1933. These securities may be resold in transactions exempt from
     registration, normally to qualified institutional buyers. It is the
     Portfolio's intention to hold the security until maturity. At December 31,
     1997, the value of these securities amounted to $4,979,544 or 2.7% of the
     Portfolio's net assets.

                       See notes to financial statements

                                      16
<PAGE>
 
Cash Management Portfolio as of December 31, 1997

FINANCIAL STATEMENTS

Statement of Assets and Liabilities


As of December 31, 1997
Assets
- --------------------------------------------------------------------------------
Investments, at value (Note 1A)                                $183,746,389
Cash                                                                 19,962
Deferred organization expenses (Note 1D)                              3,634
- --------------------------------------------------------------------------------
Total assets                                                   $183,769,985
- --------------------------------------------------------------------------------


Liabilities
- --------------------------------------------------------------------------------
Payable to affiliate for Trustees' fees (Note 2)               $      1,637
Accrued expenses                                                     28,145
- --------------------------------------------------------------------------------
Total liabilities                                              $     29,782
- --------------------------------------------------------------------------------
Net Assets (representing paid-in capital)                      $183,740,203
- --------------------------------------------------------------------------------


Sources of Net Assets
- --------------------------------------------------------------------------------
Net proceeds from capital contributions and withdrawals        $183,740,203
- --------------------------------------------------------------------------------
Total                                                          $183,740,203
- --------------------------------------------------------------------------------


Statement of Operations

For the Year Ended
December 31, 1997
Investment Income (Note 1B)
- --------------------------------------------------------------------------------
Interest income                                                $  8,048,280
- --------------------------------------------------------------------------------


Expenses
- --------------------------------------------------------------------------------
Investment adviser fee (Note 2)                                $    724,890
Compensation of Trustees not members of the
     Investment Adviser's organization (Note 2)                       5,663
Custodian fee                                                        94,846
Legal and accounting services                                        29,679
Amortization of organization expenses (Note 1D)                       2,727
Miscellaneous                                                         4,479
- --------------------------------------------------------------------------------
Total expenses                                                 $    862,284
- --------------------------------------------------------------------------------


Net investment income                                          $  7,185,996
- --------------------------------------------------------------------------------

                       See notes to financial statements

                                      17
<PAGE>
 
Cash Management Portfolio as of December 31, 1997 

FINANCIAL STATEMENTS CONT'D

Statements of Changes in Net Assets


Increase (Decrease)                 Year Ended             Year Ended
in Net Assets                       December 31, 1997      December 31, 1996
- -------------------------------------------------------------------------------
From operations --
     Net investment income         $     7,185,996        $        9,078,037
- -------------------------------------------------------------------------------
Capital transactions --
     Contributions                 $   791,713,159        $    1,075,567,385
     Withdrawals                      (806,819,022)           (1,097,885,067)
- -------------------------------------------------------------------------------
Net decrease in net assets from
     capital transactions          $   (15,105,863)       $      (22,317,682)
- -------------------------------------------------------------------------------


Net decrease in net assets         $    (7,919,867)       $      (13,239,645)
- -------------------------------------------------------------------------------


Net Assets
- -------------------------------------------------------------------------------
At beginning of year               $   191,660,070        $      204,899,715
- -------------------------------------------------------------------------------
At end of year                     $   183,740,203        $      191,660,070
- -------------------------------------------------------------------------------

                       See notes to financial statements

                                      18

<PAGE>
 
Cash Management Portfolio as of December 31, 1997

FINANCIAL STATEMENTS CONT'D

Supplementary Data

<TABLE> 
<CAPTION> 

                                                                        Year Ended December 31,
                                                   --------------------------------------------------------------
                                                      1997              1996           1995              1994*
- -----------------------------------------------------------------------------------------------------------------
<S>                                                   <C>              <C>             <C>              <C> 
Ratios to average daily net assets
- -----------------------------------------------------------------------------------------------------------------
Expenses                                              0.59%            0.59%           0.60%            0.58%+
Net investment income                                 4.96%            4.83%           5.36%            4.22%+
- -----------------------------------------------------------------------------------------------------------------
</TABLE> 

+  Annualized.
*  For the period from the start of business, May 2, 1994, to December 31, 1994.

                        See notes to financial statements

                                      19

<PAGE>
 
Cash Management Portfolio  as of December 31, 1997

NOTES TO FINANCIAL STATEMENTS


1  Significant Accounting Policies
   -----------------------------------------------------------------------------
   Cash Management Portfolio (the Portfolio) is registered under the Investment
   Company Act of 1940 as a diversified, open-end management investment company
   which was organized as a trust under the laws of the State of New York on May
   1, 1992. The Declaration of Trust permits the Trustees to issue interests in
   the Portfolio. The following is a summary of significant accounting policies
   of the Portfolio. The policies are in conformity with generally accepted
   accounting principles.

   A Security Valuation -- The Portfolio values investment securities utilizing
   the amortized cost valuation technique permitted by Rule 2a-7 of the
   Investment Company Act of 1940, pursuant to which the Portfolio must comply
   with certain conditions. This technique involves initially valuing a
   portfolio security at its cost and thereafter assuming a constant
   amortization to maturity of any discount or premium. It is the normal
   practice of the Portfolio to hold portfolio securities to maturity and
   realize par value unless such sale or other disposition is mandated by
   withdrawal requests or other extraordinary circumstances.

   B Income -- Interest income is determined on the basis of interest accrued,
   adjusted for amortization of premium or accretion of discount when required
   for federal income tax purposes.

   C Income Taxes -- The Portfolio is treated as a partnership for Federal tax
   purposes. No provision is made by the Portfolio for federal or state taxes on
   any taxable income of the Portfolio because each investor in the Portfolio is
   ultimately responsible for the payment of any taxes. Since some of the
   Portfolio's investors are regulated investment companies that invest all or
   substantially all of their assets in the Portfolio, the Portfolio normally
   must satisfy the applicable source of income and diversification requirements
   (under the Internal Revenue Code), in order for its investors to satisfy
   them. The Portfolio will allocate at least annually, among its investors each
   investor's distributive share of the Portfolio's net taxable investment
   income, net realized capital gains, and any other items of income, gain,
   loss, deduction or credit.

   D Deferred Organization Expenses -- Costs incurred by the Portfolio in
   connection with its organization are being amortized on the straight-line
   basis over five years.

   E Expense Reduction -- Investors Bank & Trust Company (IBT) serves as
   custodian to the Portfolio. Pursuant to the respective custodian agreements,
   IBT receives a fee reduced by credits which are determined based on the
   average daily cash balances the Portfolio maintains with IBT. All significant
   credit balances used to reduce the Portfolio's custodian fees are reported as
   a reduction of operating expenses on the Statement of Operations.

   F Use of Estimates -- The preparation of financial statements in conformity
   with generally accepted accounting principles requires management to make
   estimates and assumptions that affect the reported amounts of assets and
   liabilities at the date of the financial statements and the reported amounts
   of income and expense during the reporting period. Actual results could
   differ from those estimates.

   G Other -- Investment transactions are accounted for on a trade date basis.


2  Investment Adviser Fee and Other Transactions with Affiliates
   -----------------------------------------------------------------------------
   The investment adviser fee is earned by Boston Management and Research (BMR),
   a wholly-owned subsidiary of Eaton Vance Management (EVM), as compensation
   for management and investment advisory services rendered to the Portfolio.
   The fee is computed at the rate of 1/2 of 1% per annum of the Portfolio's
   average daily net assets and amounted to $724,890 for the year ended December
   31, 1997. Except as to Trustees of the Portfolio who are not members of EVM's
   or BMR's organization, officers and Trustees receive remuneration for their
   services to the Portfolio out of such investment adviser fee.

   Certain of the officers and Trustees of the Portfolio are officers and
   directors/trustees of the above organizations.

                                       20
<PAGE>
 
Cash Management Portfolio  as of December 31, 1997

NOTES TO FINANCIAL STATEMENTS CONT'D


3  Line of Credit
   ----------------------------------------------------------------------------
   The Portfolio participates with other portfolios and funds managed by BMR or
   EVM and its affiliates in a committed $100 million unsecured line of credit
   agreement with a group of banks. The Portfolio may temporarily borrow from
   the line of credit to satisfy withdrawal requests or settle investment
   transactions. Interest is charged to each participating portfolio or fund
   based on its borrowings at an amount above the eurodollar rate or federal
   funds rate. In addition, a fee computed at an annual rate of 0.10% on the
   daily unused portion of the line of credit is allocated among the
   participating portfolios and funds at the end of each quarter. The Portfolio
   did not have any significant borrowings or allocated fees during the year
   ended December 31, 1997.


4  Investments
   ----------------------------------------------------------------------------
   Purchases and sales (including maturities) of investments, during the year
   ended December 31, 1997, exclusive of U.S. Government securities aggregated
   $1,103,278,435 and $1,059,766,438, respectively. Purchases and sales
   (including maturities) of U.S. Government Agency securities aggregated
   $431,080,785 and $490,559,838, respectively.

                                       21
<PAGE>
 
Cash Management Portfolio as of December 31, 1997

REPORT OF INDEPENDENT ACCOUNTANTS


To the Trustees and Investors
of Cash Management Portfolio:
- -------------------------------------------------------------------------------

We have audited the accompanying statement of assets and liabilities of Cash
Management Portfolio (the Portfolio), including the portfolio of investments, as
of December 31, 1997, and the related statement of operations for the year then
ended, the statements of changes in net assets for the two years in the period
then ended and the supplementary data for each of the three years in the period
then ended and for the period from May 2, 1994 (start of business) to December
31, 1994. These financial statements and supplementary data are the
responsibility of the Portfolio's management. Our responsibility is to express
an opinion on these financial statements and supplementary data based on our
audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements and supplementary
data 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 at December
31, 1997 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 supplementary data referred to
above present fairly, in all material respects, the financial position of the
Portfolio, as of December 31, 1997, the results of its operations for the year
then ended, the changes in net assets for the two years in the period then ended
and supplementary data for each of the three years then ended and for the period
from May 2, 1994 (start of business) to December 31, 1994, in conformity with
generally accepted accounting principles.

                                           COOPERS & LYBRAND L.L.P.
                                           Boston, Massachusetts
                                           February 6, 1998

                                      22
<PAGE>
 
EV Money Market Funds as of December 31, 1997

INVESTMENT MANAGEMENT


Eaton Vance Mutual Funds Trust

Officers

M. Dozier Gardner
President and Trustee

James B. Hawkes
Vice President and Trustee

William H. Ahern, Jr.
Vice President

Thomas J. Fetter
Vice President

Michael B. Terry
Vice President

James L. O'Connor
Treasurer

Alan R. Dynner
Secretary


Independent Trustees

Donald R. Dwight
President, Dwight Partners, Inc.

Samuel L. Hayes, III
Jacob H. Schiff Professor of Investment Banking, Harvard University 
Graduate School of Business Administration

Norton H. Reamer
President and Director, United Asset Management Corporation

John L. Thorndike
Director, Fiduciary Company Incorporated

Jack L. Treynor
Investment Adviser and Consultant



Cash Management Portfolio


Officers

M. Dozier Gardner
President and Trustee

James B. Hawkes
Vice President and Trustee

Michael B. Terry
Vice President and Portfolio Manager

James L. O'Connor
Treasurer

Alan R. Dynner
Secretary


Trustees

Donald R. Dwight
President, Dwight Partners, Inc.

Samuel L. Hayes, III
Jacob H. Schiff Professor of Investment Banking, Harvard University 
Graduate School of Business Administration

Norton H. Reamer
President and Director, United Asset Management Corporation

John L. Thorndike
Director, Fiduciary Company Incorporated

Jack L. Treynor
Investment Adviser and Consultant

                                      23

<PAGE>
 
Portfolio Investment Advisor
Boston Management and Research
24 Federal Street
Boston, MA 02110

Fund Administrator
Eaton Vance Management
24 Federal Street
Boston, MA 02110

Principal Underwriter
Eaton Vance Distributors, Inc.
24 Federal Street
Boston, MA 02110
(617) 482-8260

Custodian
Investors Bank & Trust Company
200 Clarendon Street, 16th Floor
Boston, MA 02116

Transfer Agent
First Data Investor Services Group
Attention:  Eaton Vance Funds
P.O. Box 5123
Westborough, MA 01581-5123

Independent Accountants
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, MA 02109


Eaton Vance
Mutual Funds Trust
24 Federal Street
Boston, MA 02110

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This report must be preceded or accompanied by a current prospectus which
contains more complete information on the Fund, including its sales charges and
expenses. Please read the prospectus carefully before you invest or send money.
- --------------------------------------------------------------------------------
                                                                     MMSRC-2/98


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