<Page>

                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                         MANAGEMENT INVESTMENT COMPANIES

                  Investment Company Act File Number: 811-10599
                                                      ---------

                      Tax-Managed Small-Cap Value Portfolio
                      -------------------------------------
               (Exact Name of Registrant as Specified in Charter)

     The Eaton Vance Building, 255 State Street, Boston, Massachusetts 02109
     -----------------------------------------------------------------------
                    (Address of Principal Executive Offices)

                                 Alan R. Dynner
     The Eaton Vance Building, 255 State Street, Boston, Massachusetts 02109
     -----------------------------------------------------------------------
                    (Name and Address of Agent for Services)

                                 (617) 482-8260
                                 --------------
                         (Registrant's Telephone Number)

                                   October 31
                                   ----------
                             Date of Fiscal Year End

                                October 31, 2004
                                ----------------
                            Date of Reporting Period

<Page>

ITEM 1.  REPORTS TO STOCKHOLDERS
<Page>

TAX-MANAGED SMALL-CAP VALUE PORTFOLIO as of October 31, 2004

PORTFOLIO OF INVESTMENTS

COMMON STOCKS -- 97.4%

<Table>
<Caption>
SECURITY                                                       SHARES        VALUE
- -------------------------------------------------------------------------------------------
                                                                       
AUTO RELATED -- 3.0%

BorgWarner, Inc.                                                   35,000    $    1,623,300
- -------------------------------------------------------------------------------------------
                                                                             $    1,623,300
- -------------------------------------------------------------------------------------------

CEMENT -- 3.2%

Lafarge North America, Inc.                                        35,000    $    1,715,000
- -------------------------------------------------------------------------------------------
                                                                             $    1,715,000
- -------------------------------------------------------------------------------------------

CHEMICAL -- 5.9%

Georgia Gulf Corp.                                                 28,500    $    1,290,195
RPM, Inc.                                                         104,400         1,840,572
- -------------------------------------------------------------------------------------------
                                                                             $    3,130,767
- -------------------------------------------------------------------------------------------

COMPUTER / COMMUNICATIONS RELATED -- 3.0%

Actel Corp.(1)                                                     25,000    $      379,250
International Rectifier Corp.(1)                                   31,000         1,232,250
- -------------------------------------------------------------------------------------------
                                                                             $    1,611,500
- -------------------------------------------------------------------------------------------

CONSTRUCTION / ENGINEERING -- 3.7%

Granite Construction, Inc.                                         45,000    $    1,092,600
Insituform Technologies, Inc.(1)                                   44,500           881,990
- -------------------------------------------------------------------------------------------
                                                                             $    1,974,590
- -------------------------------------------------------------------------------------------

DRUGS -- 0.9%

Par Pharmaceutical Cos, Inc.(1)                                    12,500    $      493,125
- -------------------------------------------------------------------------------------------
                                                                             $      493,125
- -------------------------------------------------------------------------------------------

ELECTRICAL EQUIPMENT -- 3.2%

Belden CDT, Inc.                                                   77,000    $    1,711,710
- -------------------------------------------------------------------------------------------
                                                                             $    1,711,710
- -------------------------------------------------------------------------------------------

ELECTRONICS -- 3.0%

Bel Fuse, Inc. Class B                                             33,400    $    1,120,570
Technitrol, Inc.(1)                                                28,000           456,960
- -------------------------------------------------------------------------------------------
                                                                             $    1,577,530
- -------------------------------------------------------------------------------------------

ENERGY -- 11.7%

Newfield Exploration Co.(1)                                        29,000    $    1,687,800
Piedmont Natural Gas Co., Inc.                                     28,000         1,274,840
Questar Corp.                                                      29,000         1,392,000
Spinnaker Exploration Co.(1)                                       40,000    $    1,276,800
XTO Energy, Inc.                                                   17,966           599,705
- -------------------------------------------------------------------------------------------
                                                                             $    6,231,145
- -------------------------------------------------------------------------------------------

FOOD WHOLESALERS / RETAILERS -- 2.0%

Performance Food Group Co.(1)                                      23,000    $      534,980
SUPERVALU, Inc.                                                    17,900           527,871
- -------------------------------------------------------------------------------------------
                                                                             $    1,062,851
- -------------------------------------------------------------------------------------------

HOUSEHOLD PRODUCTS -- 5.4%

Church & Dwight Co., Inc.                                          75,750    $    2,061,915
Libbey, Inc.                                                       44,700           811,305
- -------------------------------------------------------------------------------------------
                                                                             $    2,873,220
- -------------------------------------------------------------------------------------------

INDUSTRIAL PRODUCTS -- 8.6%

A.O. Smith Corp.                                                   52,000    $    1,380,080
Albany International Corp., Class A                                35,300         1,059,706
CLARCOR, Inc.                                                      11,000           542,300
Teleflex, Inc.                                                     37,000         1,620,230
- -------------------------------------------------------------------------------------------
                                                                             $    4,602,316
- -------------------------------------------------------------------------------------------

INSURANCE -- 5.2%

Protective Life Corp.                                              43,000    $    1,689,900
Scottish Re Group Ltd.                                             47,000         1,057,500
- -------------------------------------------------------------------------------------------
                                                                             $    2,747,400
- -------------------------------------------------------------------------------------------

MEDICAL SERVICES / SUPPLIES -- 11.7%

CONMED Corp.(1)                                                    44,000    $    1,235,080
DENTSPLY International, Inc.                                       10,400           540,904
Mentor Corp.                                                       32,600         1,134,480
MIM Corp.(1)                                                       49,600           283,265
Owens & Minor, Inc.                                                34,000           890,460
PolyMedica Corp.                                                   40,000         1,400,000
West Pharmaceutical Services, Inc.                                 32,000           733,120
- -------------------------------------------------------------------------------------------
                                                                             $    6,217,309
- -------------------------------------------------------------------------------------------

PACKAGING -- 3.7%

AptarGroup, Inc.                                                   41,500    $    1,947,180
- -------------------------------------------------------------------------------------------
                                                                             $    1,947,180
- -------------------------------------------------------------------------------------------
</Table>

                        See notes to financial statements

                                       15
<Page>

<Table>
<Caption>
SECURITY                                                       SHARES        VALUE
- ------------------------------------------------------------------------------------------
                                                                      
RESTAURANT -- 5.1%

Applebee's International, Inc.                                     28,500   $      651,795
CBRL Group, Inc.                                                   40,000        1,450,400
Outback Steakhouse, Inc.                                           15,000          593,850
- ------------------------------------------------------------------------------------------
                                                                            $    2,696,045
- ------------------------------------------------------------------------------------------

RETAILING -- 6.5%

BJ's Wholesale Club, Inc.(1)                                       50,000   $    1,451,500
Claire's Stores, Inc.                                              51,000        1,327,020
ShopKo Stores, Inc.(1)                                             38,000          655,120
- ------------------------------------------------------------------------------------------
                                                                            $    3,433,640
- ------------------------------------------------------------------------------------------

TOY -- 3.6%

JAKKS Pacific, Inc.(1)                                             51,500   $      811,640
RC2 Corp.(1)                                                       40,000        1,114,400
- ------------------------------------------------------------------------------------------
                                                                            $    1,926,040
- ------------------------------------------------------------------------------------------

TRANSPORTATION -- 8.0%

Arkansas Best Corp.                                                67,000   $    2,619,030
Yellow Roadway Corp.(1)                                            34,536        1,657,383
- ------------------------------------------------------------------------------------------
                                                                            $    4,276,413
- ------------------------------------------------------------------------------------------

TOTAL COMMON STOCKS
   (IDENTIFIED COST, $39,583,236)                                           $   51,851,081
- ------------------------------------------------------------------------------------------

TOTAL INVESTMENTS -- 97.4%
   (IDENTIFIED COST, $39,583,236)                                           $   51,851,081
- ------------------------------------------------------------------------------------------

OTHER ASSETS, LESS LIABILITIES -- 2.6%                                      $    1,374,436
- ------------------------------------------------------------------------------------------

NET ASSETS -- 100.0%                                                        $   53,225,517
- ------------------------------------------------------------------------------------------
</Table>

(1)  Non-income producing security.

                        See notes to financial statements

                                       16
<Page>

TAX-MANAGED SMALL-CAP VALUE PORTFOLIO as of October 31, 2004

FINANCIAL STATEMENTS

STATEMENT OF ASSETS AND LIABILITIES

AS OF OCTOBER 31, 2004

<Table>
                                                            
ASSETS

Investments, at value (identified cost, $39,583,236)           $   51,851,081
Cash                                                                1,363,965
Dividends and interest receivable                                      46,821
- -----------------------------------------------------------------------------
TOTAL ASSETS                                                   $   53,261,867
- -----------------------------------------------------------------------------

LIABILITIES

Payable to affiliate for Trustees' fees                        $        2,017
Accrued expenses                                                       34,333
- -----------------------------------------------------------------------------
TOTAL LIABILITIES                                              $       36,350
- -----------------------------------------------------------------------------
NET ASSETS APPLICABLE TO INVESTORS' INTEREST IN PORTFOLIO      $   53,225,517
- -----------------------------------------------------------------------------

SOURCES OF NET ASSETS

Net proceeds from capital contributions and withdrawals        $   40,957,672
Net unrealized appreciation (computed on the basis of
   identified cost)                                                12,267,845
- -----------------------------------------------------------------------------
TOTAL                                                          $   53,225,517
- -----------------------------------------------------------------------------
</Table>

STATEMENT OF OPERATIONS

FOR THE YEAR ENDED
OCTOBER 31, 2004

<Table>
                                                            
INVESTMENT INCOME

Dividends                                                      $      533,421
Interest                                                               14,641
- -----------------------------------------------------------------------------
TOTAL INVESTMENT INCOME                                        $      548,062
- -----------------------------------------------------------------------------

EXPENSES

Investment adviser fee                                         $      503,768
Trustees' fees and expenses                                             5,676
Custodian fee                                                          42,134
Legal and accounting services                                          24,429
Miscellaneous                                                           1,765
- -----------------------------------------------------------------------------
TOTAL EXPENSES                                                 $      577,772
- -----------------------------------------------------------------------------

NET INVESTMENT LOSS                                            $      (29,710)
- -----------------------------------------------------------------------------

REALIZED AND UNREALIZED GAIN (LOSS)

Net realized gain (loss) --
   Investment transactions (identified cost basis)             $      (18,679)
- -----------------------------------------------------------------------------
NET REALIZED LOSS                                              $      (18,679)
- -----------------------------------------------------------------------------
Change in unrealized appreciation (depreciation) --
   Investments (identified cost basis)                         $    6,737,706
- -----------------------------------------------------------------------------
NET CHANGE IN UNREALIZED APPRECIATION (DEPRECIATION)           $    6,737,706
- -----------------------------------------------------------------------------

NET REALIZED AND UNREALIZED GAIN                               $    6,719,027
- -----------------------------------------------------------------------------

NET INCREASE IN NET ASSETS FROM OPERATIONS                     $    6,689,317
- -----------------------------------------------------------------------------
</Table>

                        See notes to financial statements

                                       17
<Page>

STATEMENTS OF CHANGES IN NET ASSETS

<Table>
<Caption>
INCREASE (DECREASE)                                                                YEAR ENDED            YEAR ENDED
IN NET ASSETS                                                                      OCTOBER 31, 2004      OCTOBER 31, 2003
- ---------------------------------------------------------------------------------------------------------------------------
                                                                                                   
From operations --
   Net investment loss                                                             $          (29,710)   $          (11,509)
   Net realized gain (loss)
      from Investment transactions                                                            (18,679)              245,057
   Net change in unrealized
      appreciation (depreciation)
      of investments                                                                        6,737,706             7,809,413
- ---------------------------------------------------------------------------------------------------------------------------
NET INCREASE IN NET ASSETS
   FROM OPERATIONS                                                                 $        6,689,317    $        8,042,961
- ---------------------------------------------------------------------------------------------------------------------------
Capital transactions --
   Contributions                                                                   $       11,868,068    $       19,625,349
   Withdrawals                                                                             (7,234,811)           (3,105,310)
- ---------------------------------------------------------------------------------------------------------------------------
NET INCREASE IN NET ASSETS
   FROM CAPITAL TRANSACTIONS                                                       $        4,633,257    $       16,520,039
- ---------------------------------------------------------------------------------------------------------------------------

NET INCREASE IN NET ASSETS                                                         $       11,322,574    $       24,563,000
- ---------------------------------------------------------------------------------------------------------------------------

NET ASSETS

At beginning of year                                                               $       41,902,943    $       17,339,943
- ---------------------------------------------------------------------------------------------------------------------------
AT END OF YEAR                                                                     $       53,225,517    $       41,902,943
- ---------------------------------------------------------------------------------------------------------------------------
</Table>

                        See notes to financial statements

                                       18
<Page>

SUPPLEMENTARY DATA

<Table>
<Caption>
                                                                           YEAR ENDED OCTOBER 31,
                                                                         -------------------------     PERIOD ENDED
                                                                           2004            2003        OCTOBER 31, 2002(1)
- --------------------------------------------------------------------------------------------------------------------------
                                                                                              
RATIOS/SUPPLEMENTAL DATA

Ratios (As a percentage of average daily net assets):
   Expenses                                                                    1.14%          1.18%            1.77%(2)
   Net investment loss                                                        (0.06)%        (0.04)%          (0.74)%(2)
Portfolio Turnover                                                               12%            21%               5%
- --------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN(3)                                                               14.62%         29.62%          (11.41)%
- --------------------------------------------------------------------------------------------------------------------------
NET ASSETS, END OF YEAR (000'S OMITTED)                                  $   53,226     $   41,903     $     17,340
- --------------------------------------------------------------------------------------------------------------------------
</Table>

(1)  For the period from the start of business, March 1, 2002, to October 31,
     2002.
(2)  Annualized.
(3)  Total return is not computed on an annualized basis.

                        See notes to financial statements

                                       19
<Page>

TAX-MANAGED SMALL-CAP VALUE PORTFOLIO as of October 31, 2004

NOTES TO FINANCIAL STATEMENTS

1    SIGNIFICANT ACCOUNTING POLICIES

     Tax-Managed Small-Cap Value Portfolio (the Portfolio) is registered under
     the Investment Company Act of 1940, as amended, as a diversified open-end
     management investment company. The Portfolio, which was organized as a
     trust under the laws of the State of New York on December 10, 2001, seeks
     to achieve long-term after-tax returns by investing in a diversified
     portfolio of value stocks of small-cap companies. The Declaration of Trust
     permits the Trustees to issue interests in the Portfolio. At October 31,
     2004, the Eaton Vance Tax-Managed Small-Cap Value Fund and the Eaton Vance
     Tax-Managed Equity Asset Allocation Fund held 44.5% and 55.3% interests in
     the Portfolio, respectively. The following is a summary of significant
     accounting policies consistently followed by the Portfolio in the
     preparation of its financial statements. The policies are in conformity
     with accounting principles generally accepted in the United States of
     America.

     A INVESTMENT VALUATION -- Securities listed on a U.S. securities exchange
     generally are valued at the last sale price on the day of valuation or, if
     no sales took place on such date, at the mean between the closing bid and
     asked prices therefore on the exchange where such securities are
     principally traded. Equity securities listed on the NASDAQ National Market
     System generally are valued at the official NASDAQ closing price. Unlisted
     or listed securities for which closing sales prices or closing quotations
     are not available are valued at the mean between the latest available bid
     and asked prices, or, in the case of preferred equity securities that are
     not listed or traded in the over-the-counter market, by an independent
     pricing service. Exchange-traded options are valued at the last sale price
     for the day of valuation as quoted on the principal exchange or board of
     trade on which the options are traded or, in the absence of sales on such
     date, at the mean between the latest bid and asked prices therefore.
     Futures positions on securities and currencies generally are valued at
     closing settlement prices. Short-term debt securities with a remaining
     maturity of 60 days or less are valued at amortized cost. If short-term
     debt securities were acquired with a remaining maturity of more than 60
     days, their amortized cost value will be based on their value on the
     sixty-first day prior to maturity. Other fixed income and debt securities,
     including listed securities and securities for which price quotations are
     available, will normally be valued on the basis of valuations furnished by
     a pricing service. The daily valuation of foreign securities generally is
     determined as of the close of trading on the principal exchange on which
     such securities trade. Events occurring after the close of trading on
     foreign exchanges may result in adjustments to the valuation of foreign
     securities to more accurately reflect their fair value as of the close of
     regular trading on the New York Stock Exchange. The Portfolio may rely on
     an independent fair valuation service in adjusting the valuations of
     foreign securities. Foreign securities and currencies are valued in U.S.
     dollars, based on foreign currency exchange rate quotations supplied by an
     independent quotation service. Investments held by the Portfolio for which
     valuations or market quotations are unavailable are valued at their fair
     value using methods determined in good faith by or at the direction of the
     Trustees of the Portfolio considering relevant factors, data and
     information including the market value of freely tradable securities of the
     same class in the principal market on which such securities are normally
     traded.

     B INCOME -- Dividend income is recorded on the ex-dividend date for
     dividends received in cash and/or securities. However, if the ex-dividend
     date has passed, certain dividends from foreign securities are recorded as
     the Portfolio is informed of the ex-dividend date. Interest income is
     recorded on the accrual basis.

     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 on its
     share of taxable income. Since the Portfolio's investors include 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 investment income, net realized capital gains,
     and any other items of income, gain, loss, deduction or credit.

     D FINANCIAL FUTURES CONTRACT -- Upon entering a financial futures contract,
     the Portfolio is required to deposit either in cash or securities an amount
     (initial margin) equal to a certain percentage of the purchase price
     indicated in the financial futures contract. Subsequent payments are made
     or received by the Portfolio (margin maintenance) each day, dependent on
     daily fluctuations in the value of the underlying security, and are
     recorded for book purposes as unrealized gains or losses by the Portfolio.
     The Portfolio's investment in financial futures contracts is designed to
     hedge against anticipated future changes in price of current or anticipated
     Portfolio positions. Should prices move unexpectedly, the Portfolio may not
     achieve

                                       20
<Page>

     the anticipated benefits of the financial futures contracts and may realize
     a loss.

     E PUT OPTIONS -- Upon the purchase of a put option by the Portfolio, the
     premium paid is recorded as an investment, the value of which is
     marked-to-market daily. When a purchased option expires, the Portfolio will
     realize a loss in the amount of the cost of the option. When the Portfolio
     enters into a closing sale transaction, the Portfolio will realize a gain
     or loss depending on whether the sales proceeds from the closing sale
     transaction are greater or less than the cost of the option. When the
     Portfolio exercises a put option, settlement is made in cash. The risk
     associated with purchasing options is limited to the premium originally
     paid.

     F SECURITIES SOLD SHORT -- The Portfolio may sell a security short if it
     owns at least an equal amount of the security sold short or another
     security convertible or exchangeable for an equal amount of the security
     sold short. Such transactions are done in anticipation of a decline in the
     market price of the securities or in order to hedge portfolio positions.
     The Portfolio will generally borrow the security sold in order to make
     delivery to the buyer. Upon executing the transaction, the Portfolio
     records the proceeds as deposits with brokers in the Statement of Assets
     and Liabilities and establishes an offsetting payable for securities sold
     short for the securities due on settlement. The proceeds are retained by
     the broker as collateral for the short position. The liability is
     marked-to-market and the Portfolio is required to pay the lending broker
     any dividend or interest income earned while the short position is open. A
     gain or loss is recorded when the security is delivered to the broker. The
     Portfolio may recognize a loss on the transaction if the market value of
     the securities sold increases before the securities are delivered.

     G FOREIGN CURRENCY TRANSLATION -- Investment valuations, other assets and
     liabilities initially expressed in foreign currencies are converted each
     business day into U.S. dollars based upon current exchange rates. Purchases
     and sales of foreign investment securities and income and expenses are
     converted into U.S. dollars based upon currency exchange rates prevailing
     on the respective dates of such transactions. Recognized gains or losses on
     investment transactions attributable to foreign currency exchange rates are
     recorded for financial statement purposes as net realized gains and losses
     on investments. That portion of unrealized gains and losses on investments
     that results from fluctuations in foreign currency exchange rates is not
     separately disclosed.

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

     I INDEMNIFICATIONS -- Under the Portfolio's organizational documents, its
     officers and Trustees may be indemnified against certain liabilities and
     expenses arising out of the performance of their duties to the Portfolio.
     Interestholders in the Portfolio are jointly and severally liable for the
     liabilities and obligations of the Portfolio in the event that the
     Portfolio fails to satisfy such liabilities and obligations; provided,
     however, that, to the extent assets are available in the Portfolio, the
     Portfolio may, under certain circumstances, indemnify interestholders from
     and against any claim or liability to which such holder may become subject
     by reason of being or having been an interestholder in the Portfolio.
     Additionally, in the normal course of business, the Portfolio enters into
     agreements with service providers that may contain indemnification clauses.
     The Portfolio's maximum exposure under these arrangements is unknown as
     this would involve future claims that may be made against the Portfolio
     that have not yet occurred.

     J USE OF ESTIMATES -- The preparation of the financial statements in
     conformity with accounting principles generally accepted in the United
     States of America 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.

     K 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. Under the advisory agreement, BMR receives a monthly
     advisory fee in the amount of 1.00% annually of average daily net assets of
     the Portfolio up to $500 million, and at reduced rates as

                                       21
<Page>

     daily net assets exceed that level. For the year ended October 31, 2004,
     the advisory fee amounted to $503,768. Pursuant to a sub-advisory
     agreement, BMR has delegated the investment management of the Portfolio to
     Fox Asset Management LLC (Fox), a majority-owned subsidiary of EVM. BMR
     pays Fox a monthly fee for sub-advisory services provided to the Portfolio
     in the amount of 0.75% annually of average daily net assets up to $500
     million, and at reduced rates as daily net assets exceed that level. Except
     for 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 the investment adviser fee. Trustees of the
     Portfolio who are not affiliated with BMR may elect to defer receipt of all
     or a percentage of their annual fees in accordance with the terms of the
     Trustees Deferred Compensation Plan. For the year ended October 31, 2004,
     no significant amounts have been deferred.

     Certain officers and Trustees of the Portfolio are officers of the above
     organizations.

3    INVESTMENT TRANSACTIONS

     Purchases and sales of investments, other than short-term obligations,
     aggregated $14,261,052 and $5,399,625, respectively, for the year ended
     October 31, 2004.

4    FEDERAL INCOME TAX BASIS OF UNREALIZED APPRECIATION (DEPRECIATION)

     The cost and unrealized appreciation (depreciation) in value of the
     investments owned at October 31, 2004, as computed on a federal income tax
     basis, were as follows:

<Table>
                                              
     AGGREGATE COST                              $    39,583,236
     -----------------------------------------------------------
     Gross unrealized appreciation               $    13,191,662
     Gross unrealized depreciation                      (923,817)
     -----------------------------------------------------------
     NET UNREALIZED APPRECIATION                 $    12,267,845
     -----------------------------------------------------------
</Table>

5    FINANCIAL INSTRUMENTS

     The Portfolio may trade in financial instruments with off-balance sheet
     risk in the normal course of its investing activities to assist in managing
     exposure to various market risks. These financial instruments include
     written options and financial futures contracts and may involve, to a
     varying degree, elements of risk in excess of the amounts recognized for
     financial statement purposes. The notional or contractual amounts of these
     instruments represent the investment the Portfolio has in particular
     classes of financial instruments and does not necessarily represent the
     amounts potentially subject to risk. The measurement of the risks
     associated with these instruments is meaningful only when all related and
     offsetting transactions are considered. The Portfolio did not have any open
     obligations under these financial instruments at October 31, 2004.

6    LINE OF CREDIT

     The Portfolio participates with other portfolios and funds managed by BMR
     and EVM and its affiliates in a $150 million unsecured line of credit
     agreement with a group of banks. Borrowings will be made by the Portfolio
     solely to facilitate the handling of unusual and/or unanticipated
     short-term cash requirements. Interest is charged to each participating
     portfolio or fund based on its borrowings at an amount above either 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 for the year ended October 31, 2004.

                                       22
<Page>

TAX-MANAGED SMALL-CAP VALUE PORTFOLIO as of October 31, 2004

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

TO THE TRUSTEES AND INVESTORS OF TAX-MANAGED SMALL-CAP VALUE PORTFOLIO:

We have audited the accompanying statement of assets and liabilities, including
the portfolio of investments, of Tax-Managed Small-Cap Value Portfolio (the
Portfolio) as of October 31, 2004, and the related statement of operations for
the year then ended, the statements of changes in net assets for each of the two
years in the period then ended and the supplementary data for each of the two
years then ended and the period from the start of business, March 1, 2002 to
October 31, 2002. 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
audit.

We conducted our audit in accordance with auditing standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit 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 held as of October 31, 2004 by correspondence with
the custodian and brokers; where replies were not received from brokers, we
performed other auditing procedures. 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
audit provides 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
Tax-Managed Small-Cap Value Portfolio as of October 31, 2004, the results of its
operations, the changes in its net assets and the supplementary data for the
respective stated periods in conformity with accounting principles generally
accepted in the United States of America.

DELOITTE & TOUCHE LLP
Boston, Massachusetts
December 22, 2004

                                       23
<Page>

EATON VANCE TAX-MANAGED SMALL-CAP VALUE FUND

MANAGEMENT AND ORGANIZATION

FUND MANAGEMENT. The Trustees of Eaton Vance Mutual Funds Trust (the Trust) and
Tax-Managed Small-Cap Value Portfolio (the Portfolio) are responsible for the
overall management and supervision of the Trust's and Portfolio's affairs. The
Trustees and officers of the Trust and the Portfolio are listed below. Except as
indicated, each individual has held the office shown or other offices in the
same company for the last five years. Trustees and officers of the Trust and the
Portfolio hold indefinite terms of office. The "noninterested Trustees" consist
of those Trustees who are not "interested persons" of the Trust and the
Portfolio, as that term is defined under the 1940 Act. The business address of
each Trustee and officer is The Eaton Vance Building, 255 State Street, Boston,
Massachusetts 02109. As used below, "EVC" refers to Eaton Vance Corp., "EV"
refers to Eaton Vance, Inc., "EVM" refers to Eaton Vance Management, "BMR"
refers to Boston Management and Research, "EVD" refers to Eaton Vance
Distributors, Inc. and "Fox" refers to Fox Asset Management LLC. EVC and EV are
the corporate parent and trustee, respectively, of EVM and BMR. EVD is the
Fund's principal underwriter, the Portfolio's placement agent and a wholly-owned
subsidiary of EVM.

<Table>
<Caption>
                            POSITION(S)         TERM OF                               NUMBER OF PORTFOLIOS
                             WITH THE          OFFICE AND                               IN FUND COMPLEX
   NAME AND                  TRUST AND         LENGTH OF     PRINCIPAL OCCUPATION(S)      OVERSEEN BY
 DATE OF BIRTH             THE PORTFOLIO        SERVICE      DURING PAST FIVE YEARS       TRUSTEE(1)       OTHER DIRECTORSHIPS HELD
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                            
INTERESTED TRUSTEE

James B. Hawkes            Trustee of the    Trustee of the  Chairman, President and         192               Director of EVC
11/9/41                   Trust; President    Trust since    Chief Executive Officer
                           and Trustee of        1991;       of BMR, EVC, EVM and
                           the Portfolio     President and   EV; Director of EV;
                                             Trustee of the  Vice President and
                                               Portfolio     Director of EVD.
                                               since 2001    Trustee and/or officer
                                                             of 192 registered
                                                             investment companies in
                                                             the Eaton Vance Fund
                                                             Complex. Mr. Hawkes is
                                                             an interested person
                                                             because of his
                                                             positions with BMR,
                                                             EVM, EVC and EV, which
                                                             are affiliates of the
                                                             Trust and the
                                                             Portfolio.

NONINTERESTED TRUSTEE(S)

Samuel L. Hayes, III          Trustee        Trustee of the  Jacob H. Schiff                 192             Director of Tiffany
2/23/35                                       Trust since    Professor of Investment                           & Co. (specialty
                                              1986; of the   Banking Emeritus,                               retailer) and Telect,
                                               Portfolio     Harvard University                            Inc. (telecommunication
                                               since 2001    Graduate School of                               services company)
                                                             Business
                                                             Administration.

William H. Park               Trustee          Since 2003    President and Chief             192                    None
9/19/47                                                      Executive Officer,
                                                             Prizm Capital
                                                             Management, LLC
                                                             (investment management
                                                             firm) (since 2002).
                                                             Executive Vice
                                                             President and Chief
                                                             Financial Officer,
                                                             United Asset Management
                                                             Corporation ( a holding
                                                             company owning
                                                             institutional
                                                             investment management
                                                             firms) (1982-2001).

Ronald A. Pearlman            Trustee          Since 2003    Professor of Law,               192                    None
7/10/40                                                      Georgetown University
                                                             Law Center (since
                                                             1999). Tax Partner,
                                                             Covington & Burling,
                                                             Washington, DC
                                                             (1991-2000).

Norton H. Reamer              Trustee        Trustee of the  President, Chief                192                    None
9/21/35                                       Trust since    Executive Officer and a
                                              1986; of the   Director of Asset
                                               Portfolio     Management Finance
                                               since 2001    Corp. (a specialty
                                                             finance company serving
                                                             the investment
                                                             management industry)
                                                             (since October 2003).
                                                             President, Unicorn
                                                             Corporation (an
                                                             investment and
                                                             financial advisory
                                                             services company)
                                                             (since September 2000).
                                                             Formerly, Chairman,
                                                             Hellman, Jordan
                                                             Management Co., Inc.
                                                             (an investment
                                                             management company)
                                                             (2000-2003). Formerly,
                                                             Advisory Director of
                                                             Berkshire Capital
                                                             Corporation (investment
                                                             banking firm)
                                                             (2002-2003). Formerly
                                                             Chairman of the Board,
                                                             United Asset Management
                                                             Corporation (a holding
                                                             company owning
                                                             institutional
                                                             investment management
                                                             firms) and Chairman,
                                                             President and Director,
                                                             UAM Funds (mutual
                                                             funds) (1980-2000).

Lynn A. Stout                 Trustee        Trustee of the  Professor of Law,               192                    None
9/14/57                                       Trust since    University of
                                              1998; of the   California at Los
                                               Portfolio     Angeles School of Law
                                               since 2001    (since July 2001).
                                                             Formerly, Professor of
                                                             Law, Georgetown
                                                             University Law Center.
</Table>

                                       24
<Page>

PRINCIPAL OFFICERS WHO ARE NOT TRUSTEES

<Table>
<Caption>
                             POSITION(S)                     TERM OF
                              WITH THE                     OFFICE AND
    NAME AND                  TRUST AND                     LENGTH OF                         PRINCIPAL OCCUPATION(S)
  DATE OF BIRTH             THE PORTFOLIO                    SERVICE                          DURING PAST FIVE YEARS
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                       
Thomas E. Faust Jr.    President of the Trust;   President of the Trust since   Executive Vice President of EVM, BMR, EVC and EV;
5/31/58                    Vice President        2002; Vice President of the    Chief Investment Officer of EVM and BMR and
                          of the Portfolio            Portfolio since 2001      Director of EVC. Chief Executive Officer of Belair
                                                                                Capital Fund LLC, Belcrest Capital Fund LLC,
                                                                                Belmar Capital Fund LLC, Belport Capital Fund LLC
                                                                                and Belrose Capital Fund LLC (private investment
                                                                                companies sponsored by EVM). Officer of 55
                                                                                registered investment companies managed by EVM or
                                                                                BMR.

William H. Ahern, Jr.      Vice President                  Since 1995           Vice President of EVM and BMR. Officer of 78
7/28/59                     of the Trust                                        registered investment companies managed by EVM or
                                                                                BMR.

Thomas J. Fetter           Vice President                  Since 1997           Vice President of EVM and BMR. Officer of 124
8/20/43                     of the Trust                                        registered investment companies managed by EVM or
                                                                                BMR.

Michael R. Mach            Vice President                  Since 1999           Vice President of EVM and BMR. Previously,
7/15/47                     of the Trust                                        Managing Director and Senior Analyst for Robertson
                                                                                Stephens (1998-1999). Officer of 28 registered
                                                                                investment companies managed by EVM or BMR.

Robert B. MacIntosh        Vice President                  Since 1998           Vice President of EVM and BMR. Officer of 124
1/22/57                     of the Trust                                        registered investment companies managed by EVM or
                                                                                BMR.

George C. Pierides         Vice President                  Since 2001           Senior Managing Director of Fox. Officer of 12
12/16/57                  of the Portfolio                                      registered investment companies managed by EVM
                                                                                or BMR.

Duncan W. Richardson       Vice President                  Since 2001           Senior Vice President and Chief Equity Investment
10/26/57                    of the Trust                                        Officer of EVM and BMR. Officer of 44 registered
                                                                                investment companies managed by EVM or BMR.

Walter A. Row, III         Vice President                  Since 2001           Director of Equity Research and a Vice President
7/20/57                     of the Trust                                        of EVM and BMR. Officer of 24 registered
                                                                                investment companies managed by EVM or BMR.

Judith A. Saryan           Vice President                  Since 2003           Vice President of EVM and BMR. Previously,
8/21/54                     of the Trust                                        Portfolio Manager and Equity Analyst for State
                                                                                Street Global Advisers (1980-1999). Officer of 27
                                                                                registered investment companies managed by EVM or
                                                                                BMR.

Susan Schiff               Vice President                  Since 2002           Vice President of EVM and BMR. Officer of 27
3/13/61                     of the Trust                                        registered investment companies managed by EVM or
                                                                                BMR.

Alan R. Dynner             Secretary             Secretary of the Trust since   Vice President, Secretary and Chief Legal
10/10/40                                         1997; of the Portfolio since   Officer of BMR, EVM, EVD, EV and EVC. Officer of
                                                           2001                 192 registered investment companies managed by EVM
                                                                                or BMR.

Michelle A. Green          Treasurer of                    Since 2002           Vice President of EVM and BMR. Chief Financial
8/25/69                    the Portfolio                                        Officer of Belair Capital Fund LLC, Belcrest
                                                                                Capital Fund LLC, Belmar Capital Fund LLC, Belport
                                                                                Capital Fund LLC and Belrose Capital Fund LLC
                                                                                (private investment companies sponsored by EVM).
                                                                                Officer of 83 registered investment companies
                                                                                managed by EVM or BMR.

James L. O'Connor      Treasurer of the Trust              Since 1989           Vice President of BMR, EVM and EVD. Officer of 114
4/1/45                                                                          registered investment companies managed by EVM or
                                                                                BMR.

Paul M. O'Neil             Chief Compliance                Since 2004           Vice President of EVM and BMR. Officer of 192
7/11/53                        Officer                                          registered investment companies managed by EVM or
                                                                                BMR.
</Table>

(1)  Includes both master and feeder funds in a master-feeder structure.

The SAI for the Fund includes additional information about the Trustees and
officers of the Fund and the Portfolio and can be obtained without charge by
calling 1-800-225-6265.

                                       25
<Page>

ITEM 2.  CODE OF ETHICS

The registrant has adopted a code of ethics applicable to its Principal
Executive Officer, Principal Financial Officer and Principal Accounting Officer.
The registrant undertakes to provide a copy of such code of ethics to any person
upon request, without charge, by calling 1-800-262-1122.


ITEM 3.  AUDIT COMMITTEE FINANCIAL EXPERT

The registrant's Board has designated William H. Park, Samuel L. Hayes, III and
Norton H. Reamer, each an independent trustee, as its audit committee financial
experts. Mr. Park is a certified public accountant who is the President and
Chief Executive Officer of Prizm Capital Management, LLC (investment management
firm). Previously, he served as Executive Vice President and Chief Financial
Officer of United Asset Management Corporation ("UAM") (a holding company owning
institutional investment management firms). Mr. Hayes is the Jacob H. Schiff
Professor of Investment Banking Emeritus of the Harvard University Graduate
School of Business Administration. Mr. Reamer is the President, Chief Executive
Officer and a Director of Asset Management Finance Corp. (a specialty finance
company serving the investment management industry) and is President of Unicorn
Corporation (an investment and financial advisory services company). Formerly,
Mr. Reamer was Chairman of Hellman, Jordan Management Co., Inc. (an investment
management company) and Advisory Director of Berkshire Capital Corporation (an
investment banking firm), Chairman of the Board of UAM and Chairman, President
and Director of the UAM Funds (mutual funds).

ITEM 4.  PRINCIPAL ACCOUNTANT FEES AND SERVICES

(a)-(d)

The following table presents aggregate fees billed to the registrant for the
fiscal years ended October 31, 2003, and October 31, 2004 by the registrant's
principal accountant for professional services rendered for the audit of the
registrant's annual financial statements and fees billed for other services
rendered by the principal accountant during those periods.

<Table>
<Caption>
FISCAL YEARS ENDED                                       10/31/03       10/31/04
- --------------------------------------------------------------------------------
                                                                  
Audit Fees                                               $ 16,647       $ 19,405

Audit-Related Fees(1)                                    $      0       $      0

Tax Fees(2)                                              $  3,700       $  4,100

All Other Fees(3)                                        $      0       $      0
                                                         -----------------------
Total                                                    $ 20,347       $ 23,505
                                                         =======================
</Table>

<Page>

(1)  Audit-related fees consist of the aggregate fees billed for assurance and
related services that are reasonably related to the performance of the audit of
the registrant's financial statements and are not reported under the category of
audit fees.

(2)  Tax fees consist of the aggregate fees billed for professional services
rendered by the principal accountant relating to tax compliance, tax advice, and
tax planning and specifically include fees for tax return preparation.

(3)  All other fees consist of the aggregate fees billed for products and
services provided by the registrant's principal accountant other than audit,
audit-related, and tax services.

During the fiscal year ended October 31, 2004, $35,000 was billed by the
registrant's principal accountant, Deloitte and Touche LLP, for work done in
connection with its Rule 17Ad-13 Eaton Vance Management's examination of
management's assertion that it has maintained an effective internal control
structure over sub-transfer agent and registrar functions, such services being
pre-approved in accordance with Rule 2-01(c)(7)(ii) of Regulation S-X.

(e)(1) The registrant's audit committee has adopted policies and procedures
relating to the pre-approval of services provided by the registrant's principal
accountant (the "Pre-Approval Policies"). The Pre-Approval Policies establish a
framework intended to assist the audit committee in the proper discharge of its
pre-approval responsibilities. As a general matter, the Pre-Approval Policies
(i) specify certain types of audit, audit-related, tax, and other services
determined to be pre-approved by the audit committee; and (ii) delineate
specific procedures governing the mechanics of the pre-approval process,
including the approval and monitoring of audit and non-audit service fees.
Unless a service is specifically pre-approved under the Pre-Approval Policies,
it must be separately pre-approved by the audit committee.

The Pre-Approval Policies and the types of audit and non-audit services
pre-approved therein must be reviewed and ratified by the registrant's audit
committee at least annually. The registrant's audit committee maintains full
responsibility for the appointment, compensation, and oversight of the work of
the registrant's principal accountant.

(e)(2) No services described in paragraphs (b)-(d) above were approved by the
registrant's audit committee pursuant to the "de minimis exception" set forth in
Rule 2-01 (c)(7)(i)(C) of Regulation S-X.

(f) Not applicable.

(g) The following table presents (i) the aggregate non-audit fees (i.e., fees
for audit-related, tax, and other services) billed to the registrant by the
registrant's principal accountant for the last two fiscal years of the
registrant; and (ii) the aggregate non-audit fees (i.e., fees for audit-related,
tax, and other services) billed to the Eaton Vance organization by the
registrant's principal accountant for the last two fiscal years of the
registrant.

<Table>
<Caption>
FISCAL YEARS ENDED                                        10/31/03     10/31/04
- --------------------------------------------------------------------------------
                                                                
Registrant                                               $    3,700   $    4,100
</Table>

<Page>

<Table>
                                                                
Eaton Vance (1)                                          $  467,489   $  340,730
</Table>

(1)  The investment adviser to the registrant, as well as any of its affiliates
     that provide ongoing services to the registrant, are subsidiaries of Eaton
     Vance Corp.

(h) The registrant's audit committee has considered whether the provision by the
registrant's principal accountant of non-audit services to the registrant's
investment adviser and any entity controlling, controlled by, or under common
control with the adviser that provides ongoing services to the registrant that
were not pre-approved pursuant to Rule 2-01(c)(7)(ii) of Regulation S-X is
compatible with maintaining the principal accountant's independence.

ITEM 5.  AUDIT COMMITTEE OF LISTED REGISTRANTS

Not required in this filing.

ITEM 6.  SCHEDULE OF INVESTMENTS

Please see schedule of investments contained in the Report to Stockholders
included under Item 1 of this Form N-CSR.

ITEM 7.  DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END
MANAGEMENT INVESTMENT COMPANIES

Not required in this filing.

ITEM 8.  PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT
COMPANY AND AFFILIATED PURCHASERS.

Not required in this filing.

ITEM 9.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

Effective February 9, 2004, the Governance Committee of the Board of Trustees
formalized the procedures by which a Fund's shareholders may recommend nominees
to the registrant's Board of Trustees. The Governance Committee shall, when
identifying candidates for the position of Independent Trustee, consider any
such candidate recommended by a shareholder of a Fund if such recommendation
contains sufficient background information concerning the candidate, and is
received in a sufficiently timely manner (and in any event no later than the
date specified for receipt of shareholder proposals in any applicable proxy
statement with respect to a Fund). Shareholders shall be directed to address any
such recommendations to the attention of the Governance Committee, c/o the
Secretary of the Fund.

ITEM 10. CONTROLS AND PROCEDURES

<Page>

(a) It is the conclusion of the registrant's principal executive officer and
principal financial officer that the effectiveness of the registrant's current
disclosure controls and procedures (such disclosure controls and procedures
having been evaluated within 90 days of the date of this filing) provide
reasonable assurance that the information required to be disclosed by the
registrant has been recorded, processed, summarized and reported within the time
period specified in the Commission's rules and forms and that the information
required to be disclosed by the registrant has been accumulated and communicated
to the registrant's principal executive officer and principal financial officer
in order to allow timely decisions regarding required disclosure.

(b) There have been no changes in the registrant's internal controls over
financial reporting during the period that has materially affected, or is
reasonably likely to materially affect the registrant's internal control over
financial reporting.

ITEM 11. EXHIBITS

(a)(1)       Registrant's Code of Ethics - Not applicable (please see Item 2).
(a)(2)(i)    Treasurer's Section 302 certification.
(a)(2)(ii)   President's Section 302 certification.
(b)          Combined Section 906 certification.
<Page>

                                  SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

Tax-Managed Small-Cap Value Portfolio
- -------------------------------------

By:   /S/ James B. Hawkes
      -------------------
      James B. Hawkes
      President


Date: December 22, 2004
      -----------------

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.

By:   /S/ Michelle A. Green
      ---------------------
      Michelle A. Green
      Treasurer


Date: December 22, 2004
      -----------------

By:   /S/ James B. Hawkes
      -------------------
      James B. Hawkes
      President


Date: December 22, 2004
      -----------------