NATIONAL LIMITED MATURITY MUNICIPALS PORTFOLIO
N-30D, 1996-11-22
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The Eaton Vance Investment Trust
for the National Limited Maturity Municipals Portfolio

[LOGO]

Semi-Annual Shareholder Report
September 30, 1996

Investment Adviser of National
Limited Maturity Municipals Portfolio
Boston Management and Research
24 Federal Street
Boston, MA 02110

Administrator of
EV Marathon National
Limited Maturity Municipals Fund
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
89 South Street
P.O. Box 1537
Boston, MA 02205-1537

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

<PAGE>

                National Limited Maturity Municipals Portfolio 

                           Portfolio of Investments 
                              September 30, 1996 
                                 (Unaudited) 
                         Tax-Exempt Investments--100% 

<TABLE>
<CAPTION>
Ratings (unaudited) 
                        Principal 
           Standard     Amount 
Moody's    & Poor's     (000 omitted)    Security                                            Value 
- -----------------------------------------------------------------------------------------------------
<S>        <C>          <C>              <C>                                             <C>
                                         Assisted Living--0.9% 
  NR         NR            $1,105        Arizona Health Facilities Authority Assisted 
                                           Living Facilities, (Mesa Project), 7.625%, 
                                           1/1/06                                         $ 1,105,155 
                                                                                          -----------
                                         Cogeneration--4.2% 
  NR         BBB-          $1,120        New Jersey Economic Development Authority 
                                           Heating & Cooling, (Trigen-Trenton Project), 
                                           (AMT), 6.10%, 12/1/04                          $ 1,127,034 
  NR         NR             1,800        Pennsylvania Economic Development Authority, 
                                           Resource Recovery, (Northampton), (AMT), 
                                           6.75%, 1/1/07                                    1,831,680 
  NR         BBB-           2,000        Pennsylvania Economic Development Authority, 
                                           Resource Recovery, (AMT), (Culver Project), 
                                           6.75%, 1/1/07                                    2,094,260 
                                                                                          -----------
                                                                                          $ 5,052,974 
                                                                                          -----------
                                         Education Revenue--9.6% 
  Aa         NR            $1,500        Arizona Educational Loan Marketing Corporation, 
                                           (AMT), 6.00%, 9/1/01                           $ 1,550,025 
  NR         NR             1,900        Arizona Educational Loan Marketing Corporation, 
                                           (AMT), 6.25%, 6/1/06                             1,953,884 
  A          NR             1,000        Arizona Student Loan Acquisition Authority, 
                                           (AMT), 7.625%, 5/1/10                            1,083,720 
  A          NR             1,000        Arkansas Student Loan Authority, (AMT), 6.25%, 
                                           6/1/10                                             999,890 
  A          NR             1,500        Maine Educational Loan Marketing Corporation, 
                                           (AMT), 6.90%, 11/1/03                            1,584,780 
  A1         A+             1,730        Massachusetts Health and Educational Facilities 
                                           Authority, Tufts University Issue, 7.40%, 
                                           8/1/18                                           1,849,145 
  Ba1        NR             1,000        New Hampshire Higher Education & Health 
                                           Facilities Authority, Colby Sawyer College, 
                                           7.20%, 6/1/12                                    1,006,910 
  A          NR             1,415        The State of Texas, Texas College Student Loan 
                                           Senior Lien, 7.45%, 10/1/06                      1,452,865 
                                                                                          -----------
                                                                                          $11,481,219 
                                                                                          -----------
                                         Escrowed--3.1% 
  Aaa        AAA           $1,720        Corpus Christi TX, (FGIC), Prerefunded to 3/1/02, 
                                           6.70%, 3/1/08                                  $ 1,878,292 
  Aaa        AAA            1,500        Grand Ledge, Michigan, Public School District, 
                                           (MBIA), Prerefunded to 5/1/04, 7.875%, 5/1/11    1,805,655 
                                                                                          -----------
                                                                                          $ 3,683,947 
                                                                                          -----------
                                         General Obligations--13.3% 
  Aaa        AA+           $1,500        Baltimore County, Maryland, 6.00%, 7/1/05        $ 1,609,800 
  NR         NR             1,000        Cleveland, Ohio, City School District, 6.50%, 
                                           6/15/97                                          1,001,360 
  Aaa        AAA            1,000        Dallas County, Texas, Unlimited Tax (Road 
                                           Improvement), 6.50%, 8/15/08                     1,057,380 

12
<PAGE> 

Tax-Exempt Investments (Continued)

Ratings (unaudited) 
                        Principal 
           Standard     Amount 
Moody's    & Poor's     (000 omitted)    Security                                            Value 
- -----------------------------------------------------------------------------------------------------

                                         General Obligations--(Continued) 
  Aa1        AAA            2,750        City of Dallas, Texas, 5.00%, 2/15/15 (3)          2,550,103 
  Ba1        BBB            5,000        City of Detroit, Michigan, 6.50%, 4/1/02 (2)       5,215,050 
  Aaa        AA+            1,000        State of Georgia, 6.00%, 3/1/04                    1,073,400 
  NR         NR             3,270        Youngstown, Ohio County School District, 6.40%, 
                                           7/1/00                                           3,352,469 
                                                                                          -----------
                                                                                          $15,859,562 
                                                                                          -----------
                                         Hospitals--11.6% 
  NR         BBB           $1,250        Alexander City, Alabama, Special Care Facilities 
                                           Financing Authority, (Russell Hospital Corp.), 
                                           5.75%, 12/1/08                                 $ 1,215,825 
  NR         BBB            1,250        Alexander City, Alabama, Special Care Facilities 
                                           Financing Authority, (Russell Hospital Corp.), 
                                           6.00%, 12/1/10                                   1,224,225 
  A1         AA-            1,500        Anchorage, Alaska, Hospital Revenue Bonds, 
                                           (Sisters of Providence Project), 6.75%, 10/1/00   1,613,055 
  Baa        BBB            1,500        Colorado Health Facilities Authority, (Rocky 
                                           Mountain Adventist Project), 6.00%, 2/1/98       1,511,235 
  Baa        NR             1,355        Flint, Michigan, Hospital Authority, (Hurley 
                                           Medical Center), 5.75%, 7/1/03                   1,340,718 
  Aa         AA-            2,500        Greenville, South Carolina, Hospital System, 
                                           (Board of Trustees), 5.25%, 5/1/17               2,304,900 
  NR         BBB-           1,000        Lufkin, Texas, Health Facilities Development 
                                           Corporation, (Memorial Health System of East 
                                           Texas), 6.50%, 2/15/06                             997,120 
  Baa        BB             1,570        Massachusetts Health and Educational Facilities 
                                           Authority, (Milford Whitinsville Hospital), 
                                           7.125%, 7/15/02                                  1,581,916 
  Baa        BBB-           2,000        Richardson, Texas, Hospital Authority, 
                                           (Richardson Medical Center), 6.50%, 12/1/12      2,001,120 
                                                                                          -----------
                                                                                          $13,790,114 
                                                                                          -----------
                                         Housing--5.4% 
  Baa        NR            $1,125        Illinois Development Finance Authority, Elderly 
                                           Housing, (Rome Meadows Project), 6.40%, 2/1/03 $ 1,129,500 
  Baa        NR             1,145        Illinois Development Finance Authority, Elderly 
                                           Housing, (Rome Meadows Project), 6.65%, 2/1/06   1,151,171 
  Baa        NR             1,005        Illinois Development Finance Authority, Elderly 
                                           Housing, (Mattoon Tower Project--Section 8), 
                                           6.35%, 7/1/10                                      996,698 
  Aa         AA             2,895        Wyoming Community Development Agency, (Single 
                                           Family Mortgage Bonds), (FHA/VA Mortgages), 
                                           (AMT), 7.20%, 6/1/10                             3,111,893 
                                                                                          -----------
                                                                                          $ 6,389,262 
                                                                                          -----------

                                                                              13
<PAGE> 
Portfolio of Investments (Continued)
Tax-Exempt Investments (Continued)

Ratings (unaudited) 
                        Principal 
           Standard     Amount 
Moody's    & Poor's     (000 omitted)    Security                                            Value 
- -----------------------------------------------------------------------------------------------------

                                         Industrial Development Revenue--6.5% 
  NR         NR            $  690        Austin, Texas, Cargoport Development LLC 
                                           Project, (AMT), 7.50%, 10/1/07                  $  689,993 
  NR         NR               455        Austin, Texas, Cargoport Development LLC 
                                           Project, (AMT), 8.30%, 10/1/21                     454,995 
  NR         NR             3,980        Jackson, Tennessee, Industrial Development 
                                           Board, Solid Waste Disposal (Owens-Corning 
                                           Fiberglass), (AMT), 6.25%, 3/31/04 (2)           3,998,268 
  NR         NR               500        Kimball, Nebraska, Economic Development 
                                           Authority, (Clean Harbors Inc.), 10.75%, 9/1/26    502,560 
  Baa2       BBB            2,000        Memphis-Shelby County, Tennessee, Airport, 
                                           (Federal Express), 6.75%, 9/1/12                 2,093,240 
                                                                                          -----------
                                                                                           $7,739,056 
                                                                                          -----------
                                         Insured Cogeneration--1.2% 
  Aaa        AAA           $1,500        Dade County, Florida, Resource Recovery, 
                                           (AMBAC), (AMT), 5.35%, 10/1/08                  $1,476,540 
                                                                                           ----------
                                         Insured General Obligations--6.9% 
  Aaa        AAA           $1,280        Corpus Christi, Texas, (FGIC), 6.70%, 3/1/08      $1,381,977 
  Aaa        AAA            1,300        El Paso, Texas, (AMBAC), 5.00%, 8/15/12            1,218,607 
  Aaa        AAA            2,835        LaPorte County, Indiana, Multi School Building 
                                           Corporation, (MBIA), 0.00%, 7/1/13               1,071,856 
  Aaa        AAA            2,500        LaPorte County, Indiana, Multi School Building 
                                           Corporation, (MBIA), 0.00%, 1/15/14                916,675 
  Aaa        AAA            4,000        Commonwealth of Massachusetts, (MBIA), 4.875%, 
                                           10/1/13                                          3,664,160 
                                                                                          -----------
                                                                                           $8,253,275 
                                                                                          -----------
                                         Insured Hospital--0.9% 
  Aaa        AAA           $1,000        Kentucky Development Finance Authority, (St. 
                                           Luke's Hospital) (MBIA), 7.30%, 10/1/03         $1,086,310 
                                                                                          -----------
                                         Insured Housing--6.1% 
  Aaa        AAA           $2,115        Massachusetts State Housing Finance Authority, 
                                           (Harborpoint Project), (AMBAC), (AMT), 6.20%, 
                                           12/1/10                                         $2,137,525 
  Aaa        AAA            4,000        Massachusetts State Housing Finance Authority, 
                                           (MBIA), 6.10%, 7/1/15                            4,081,680 
  Aaa        AAA            1,000        Massachusetts State Housing Finance Authority, 
                                           (AMBAC), (AMT), 6.00%, 1/1/04                    1,047,070 
                                                                                          -----------
                                                                                           $7,266,275 
                                                                                          -----------
                                         Insured Lease Revenue/Certificate of 
                                           Participation--1.3% 
  Aaa        AAA           $1,500        Texas State Public Finance Authority, (AMBAC),     
                                           5.60%, 2/1/00                                   $1,542,420
                                                                                          -----------

14

<PAGE> 

Tax-Exempt Investments (Continued)

Ratings (unaudited) 
                        Principal 
           Standard     Amount 
Moody's    & Poor's     (000 omitted)    Security                                            Value 
- -----------------------------------------------------------------------------------------------------
                                         Insured Transportation--4.3% 
  Aaa        AAA           $1,100        Metropolitan Washington D.C. Airport Authority, 
                                           (MBIA), 7.60%, 10/1/14                          $1,208,691 
  Aaa        AAA            1,500        Port of Houston Authority of Harris County, Texas, 
                                           (MBIA) 5.75%, 5/1/02                             1,538,160 
  Aaa        AAA            2,270        Texas Turnpike Authority, (FGIC), 6.00%, 1/1/03 
                                           (1)                                              2,381,571 
                                                                                          -----------
                                                                                           $5,128,422 
                                                                                          -----------
                                         Insured Water & Sewer--1.6% 
  Aaa        AAA           $2,000        Burbank, California, Wastewater Treatment, 
                                           (FGIC), 5.50%, 6/1/15                           $1,963,240 
                                                                                          -----------
                                         Life Care--0.4% 
  NR         NR            $  475        Vermont State Industrial Development Authority, 
                                           (Wake Robins Project), 8.00%, 4/1/09            $  483,712 
                                                                                          -----------
                                         Miscellaneous--2.2% 
  NR         NR            $1,515        Santa Fe, New Mexico, Industrial Revenue 
                                           Custodial Receipts, (Crow Hobbs Project), 
                                           8.25%, 9/1/05                                   $1,519,530 
  Aa         AA             1,000        Virginia State Public School Authority, 6.00%, 
                                           8/1/01                                           1,055,930 
                                                                                          -----------
                                                                                           $2,575,460 
                                                                                          -----------
                                         Nursing Homes--6.0% 
  NR         A+            $4,000        California Statewide Nursing Homes, (Pacific 
                                           Homes), 5.90%, 4/1/09                           $4,007,880 
  NR         NR             1,500        Massachusetts State Industrial Finance Agency, 
                                           Health Care Facilities, (Age Institute of MA 
                                           Project), 7.60%, 11/1/05                         1,506,675 
  NR         NR             1,550        St. Tammany Public Trust Finance Authority, 
                                           Louisiana, (Christwood Project), 8.75%, 
                                           11/15/05                                         1,657,074 
                                                                                          -----------
                                                                                           $7,171,629 
                                                                                          -----------

                                         Transportation--7.0% 
  Baa        BBB           $2,000        Denver, Colorado City & County Airport, 
                                           (AMT),7.00%, 11/15/99                           $2,120,460 
  NR         NR             1,225        Eagle County, Colorado, Airport Terminal 
                                           Corporation Project, (American Airlines), 
                                           (AMT), 6.75%, 5/1/06                             1,257,022 
  Baa3       BB+            3,500        Kenton County, Kentucky, Airport Revenue Special 
                                           Facilities, (Delta Airlines Project), 
                                           (AMT),7.50%, 2/1/20                              3,745,665 
  NR         NR             1,180        Los Angeles, California, Regional Airport 
                                           Improvement Corporate Lease Project, 
                                           (TransWorld Airlines), 6.125%, 5/15/00           1,174,017 
                                                                                          -----------
                                                                                           $8,297,164 
                                                                                          -----------

                                                                              15
<PAGE> 
Portfolio of Investments (Continued)
Tax-Exempt Investments (Continued)


Ratings (unaudited) 
                        Principal 
           Standard     Amount 
Moody's    & Poor's     (000 omitted)    Security                                            Value 
- -----------------------------------------------------------------------------------------------------

                                         Utility Revenue--6.6% 
  Aa1        AA-           $1,545        Conservation and Renewable Energy System, 
                                           Washington Conservation Project, 5.55%, 
                                           10/1/02                                       $  1,604,730 
  Aa3        AA-            1,000        Chicago, Illinois, Gas Supply Revenue Bonds, 
                                           (The Peoples Gas Light and Coke Company 
                                           Project), 7.50%, 3/1/15                          1,102,640 
  Aa1        AA             1,000        Jacksonville Electric Authority, St. John's 
                                           River Power System, 6.75%, 10/1/05               1,093,210 
  Ba1        BB+            1,500        Farmington, New Mexico, PCR, (Public Service 
                                           Company of New Mexico--San Juan Project),
                                           6.00%, 3/1/08                                    1,470,810 
  Aa2        AA             2,500        Jefferson County, Kentucky, Louisville Gas 
                                           and Electric Company Project, (AMT), 
                                           7.75%, 2/1/19                                    2,650,475 
                                                                                         ------------
                                                                                         $  7,921,865 
                                                                                         ------------
                                         Water & Sewer Revenue--0.9% 
  Aa         AA            $1,000        Harris County, Texas, Flood Control District, 
                                           7.125%, 10/1/00                               $  1,091,942 
                                                                                         ------------
                                         Total Tax-Exempt Investments (identified cost, 
                                           $117,307,269)                                 $119,359,543 
                                                                                         ============
</TABLE>

(1) When-issued security. 

(2) Security has been segregated to cover when-issued securities. 

(3) Security has been segregated to cover margin requirements on open 
    financial futures contracts. 

The Portfolio invests primarily in debt securities issued by municipalities. 
The ability of the issuers of the debt securities to meet their obligations 
may be affected by economic developments in a specific industry or 
municipality. In order to reduce the risk associated with such economic 
developments, at September 30, 1996, 22.3% of the securities in the portfolio 
of investments are backed by bond insurance of various financial institutions 
and financial guaranty assurance agencies. The aggregate percentage by 
financial institution range from 6.2% to 12.9% of total investments. 

At September 30, 1996, the concentration of the Portfolio's investments in 
the various states, determined as a percentage of total investments is as 
follows: 

    Texas                                                    17% 
    Massachusetts                                            13% 
    Others, representing less than 5% individually           70% 


                       See notes to financial statements

16

<PAGE> 

                             Financial Statements 
                     Statement of Assets and Liabilities 
- -------------------------------------------------------------------------------
                        September 30, 1996 (Unaudited) 
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
<S>                                             <C>            <C>
 Assets: 
 Investments, at value (Note 1A) (identified 
  cost, $117,307,269)                                          $119,359,543 
 Cash                                                                   234 
 Receivable for daily variation margin on 
  open financial futures contracts (Note 1F)                         16,875 
 Receivable for investments sold                                  3,043,588 
 Interest receivable                                              2,408,365 
 Deferred organization expenses (Note 1D)                             3,917 
                                                               ------------
      Total assets                                             $124,832,522 

Liabilities: 
 Payable for when-issued security (Note 1F)     $2,566,931 
 Demand note payable (Note 3)                    1,460,000 
 Payable to affiliate -- 
  Trustees' fees                                     2,044 
 Accrued expenses                                   12,731 
                                                ----------
      Total liabilities                                           4,041,706 
                                                               ------------
Net Assets applicable to investors' interest 
  in Portfolio                                                 $120,790,816 
                                                               ============
Sources of Net Assets: 
 Net proceeds from capital contributions and 
  withdrawals                                                  $118,810,152 
 Unrealized appreciation of investments and 
  financial futures contracts (computed on the
  basis of identified cost)                                       1,980,664 
                                                               ------------
      Total                                                    $120,790,816 
                                                               ============
</TABLE>

                        See notes to financial statements

                                                                              17
<PAGE> 

Financial Statements (Continued)

                            Statement of Operations
- -------------------------------------------------------------------------------
               Six Months Ended September 30, 1996 (Unaudited) 
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
<S>                                           <C>             <C>
 Investment Income: 
 Interest Income                                              $ 3,801,589 
 Expenses -- 
  Investment adviser fee (Note 2)             $   303,767 
  Compensation of Trustees not members of 
  the Investment Adviser's organization             4,217 
  Custodian fees (Note 1G)                         35,459 
  Legal and accounting services                    20,896 
  Bond Pricing                                      5,044 
  Amortization of organization expenses 
  (Note 1D)                                         1,237 
  Miscellaneous                                    18,136 
                                              -----------
    Total expenses                            $   388,756 
  Deduct reduction of custodian fee (Note 1G)       9,260 
                                              -----------
     Net expenses                                                 379,496 
                                                              -----------
      Net investment income                                   $ 3,422,093 
                                                              -----------
Realized and Unrealized Gain (Loss): 
 Net realized loss-- 
  Investment transactions (identified cost 
  basis)                                      $  (697,999) 
  Financial futures contracts                  (1,014,251) 
                                              -----------
   Net realized loss on investments                           $(1,712,250) 
 Change in unrealized appreciation 
  (depreciation) of-- 
  Investments                                 $   942,178 
  Financial futures contracts                     (71,610) 
                                              -----------
   Net change in unrealized appreciation                          870,568 
                                                              -----------
    Net realized and unrealized loss                          $  (841,682) 
                                                              -----------
     Net increase in net assets from operations               $ 2,580,411 
                                                              ===========
</TABLE>

                       See notes to financial statements

18
<PAGE> 

                     Statements of Changes in Net Assets 
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                              Six Months Ended 
                                             September 30, 1996       Year Ended 
                                                 (Unaudited)        March 31, 1996 
                                             ------------------     --------------
<S>                                             <C>                 <C>
Increase (Decrease) in Net Assets: 
 From operations-- 
  Net investment income                         $  3,422,093         $  7,759,487 
  Net realized gain (loss) on investments         (1,712,250)           1,454,592 
  Change in unrealized appreciation 
  (depreciation) of investments                      870,568             (359,938)
                                                ------------         ------------ 
   Net increase in net assets from 
    operations                                  $  2,580,411         $  8,854,141 
                                                ------------         ------------ 
 Capital transactions-- 
  Contributions                                 $ 27,705,252         $ 15,935,762 
  Withdrawals                                    (44,271,215)         (59,634,339) 
                                                ------------         ------------ 
   Decrease in net assets resulting from 
  capital transactions                          $(16,565,963)        $(43,698,577) 
                                                ------------         ------------ 
    Total decrease in net assets                $(13,985,552)        $(34,844,436) 
Net Assets: 
 At beginning of period                          134,776,368          169,620,804 
                                                ------------         ------------ 
 At end of period                               $120,790,816         $134,776,368 
                                                ============         ============
</TABLE>

- --------------------------------------------------------------------------------
                              Supplementary Data 
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                
                                                 Six Months Ended 
                                                September 30, 1996               Year Ended March 31,
                                                    (Unaudited)           1996         1995         1994* 
                                                ------------------      --------    ---------     ---------
<S>                                                 <C>                  <C>         <C>           <C>
Ratios (As a percentage of average daily net 
  assets): 
 Expenses (1)                                           0.61%+            0.57%         0.53%        0.52%+ 
 Expenses after custodian fee reduction                 0.60%+            0.56%           --           -- 
 Net investment income                                  5.37%+            5.08%         5.02%        4.74%+ 
Portfolio Turnover                                        28%               68%           56%          21% 
Net assets, end of period (000 omitted)              $120,791           134,776      $169,621     $177,842 
</TABLE>

  + Annualized. 
  * For the period from the start of business, May 3, 1993, to March 31, 1994. 
(1) The annualized expense ratios for the six months ended September 30, 1996 
    and for the year ended March 31, 1996 have been adjusted to reflect a 
    change in reporting requirements. The new reporting guidelines require 
    the Portfolio to increase its expense ratio by the effect of any expense 
    offset arrangements with its service providers. The expense ratios for 
    each of the periods ended on or before March 31, 1995 have not been 
    adjusted to reflect this change. 

                       See notes to financial statements
                                                                              19
<PAGE> 

                        Notes to Financial Statements 
                                 (Unaudited) 

(1) Significant Accounting Policies 

National Limited Maturity Municipals Portfolio (the Portfolio) is a mutual 
fund seeking to provide a high level of income exempt from regular federal 
income tax and limited principal fluctuation. 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. Investment Valuation--Municipal bonds are normally valued on the basis of 
valuations furnished by a pricing service. Taxable obligations, if any, for 
which price quotations are readily available are normally valued at the mean 
between the latest bid and asked prices. Futures contracts listed on 
commodity exchanges are valued at closing settlement prices. Short-term 
obligations, maturing in sixty days or less, are valued at amortized cost, 
which approximates value. Investments for which valuations or market 
quotations are unavailable are valued at fair value using methods determined 
in good faith by or at the direction of the Trustees. 

B. Income--Interest income is determined on the basis of interest accrued, 
adjusted for amortization of premium or 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 (if any) and 
tax-exempt investment income, net realized capital gains, and any other items 
of income, gain, loss, deduction or credit. Interest income received by the 
Portfolio on investments in municipal bonds, which is excludable from gross 
income under the Internal Revenue Code, will retain its status as income 
exempt from federal income tax when allocated to the Portfolio's investors. 
The portion of such interest, if any, earned on private activity bonds issued 
after August 7, 1986 may be considered a tax preference item for investors. 

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. Financial Futures Contracts--Upon the entering of a financial futures 
contract, the Portfolio is required to deposit ("initial margin") either in 
cash or securities an amount 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 the 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 only to 
hedge against anticipated future changes in interest rates. Should interest 
rates move unexpectedly, the Portfolio may not achieve the anticipated 
benefits of the financial futures contracts and may realize a loss. 

F. When-issued and Delayed Delivery Transaction--The Portfolio may engage in 
when-issued and delayed delivery transactions. The Portfolio records 
when-issued securities on trade date and maintains security positions such 
that sufficient liquid assets will be available to make payments for the 
securities purchased. Securities purchased on a when-issued or delayed 
delivery basis are marked-to-market daily and begin accruing interest on 
settlement date. 

G. 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 significant credit balances 
used to reduce the Portfolio's custodian fees are reported as a reduction of 
expenses on the Statement of Operations. 

20
<PAGE> 

H. 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 revenue and expense during the reporting period. Actual results could 
differ from those estimates. 

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

J. Interim Financial Information--The interim financial statements relating 
to September 30, 1996 and for the six month period then ended have not been 
audited by independent certified public accountants, but in the opinion of 
the Portfolio's management reflect all adjustments consisting only of normal 
recurring adjustments, necessary for the fair presentation of the financial 
statements. 

(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 based upon a percentage of average daily net assets plus a 
percentage of gross income (i.e., income other than gains from the sale of 
securities). For the six months ended September 30, 1996, the fee was 
equivalent to 0.48% of the Portfolio's average net assets for such period and 
amounted to $303,767. 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. Trustees of the 
Portfolio may elect to defer receipt of all or a portion of their annual fees 
in accordance with the terms of the Trustee Deferred Compensation Plan. For 
the six months ended September 30, 1996, no significant amounts have been 
deferred. 

(3) Line of Credit 

The Portfolio participates with other portfolios and funds managed by BMR and 
EVM in a $120 million unsecured line of credit agreement with a bank, a 
portion of which is discretionary. The Portfolio may temporarily borrow up to 
5% of its total assets to satisfy redemption requests or settle transactions. 
Interest is charged to each portfolio or fund based on its borrowings at an 
amount above either the bank's adjusted certificate of deposit rate, a 
variable adjusted certificate of deposit rate, or a federal funds effective 
rate. In addition, a fee computed at an annual rate of 1/4 of 1% on the daily 
unused portion of the facility is allocated among the participating funds and 
portfolios at the end of each quarter. At September 30, 1996, the Portfolio 
had a balance outstanding pursuant to this line of credit of $1,460,000. The 
Portfolio did not have any significant borrowings or allocated fees during 
the period. 

(4) Investments 
Purchases and sales of investments, other than U.S. Government securities and 
short-term obligations, aggregated $35,902,539 and $53,504,781, respectively. 

                                                                              21
<PAGE> 
Notes to Financial Statements (Continued)


(5) Federal Income Tax Basis of Investments 

The cost and unrealized appreciation/depreciation in value of the investments 
owned at September 30, 1996, as computed on a federal income tax basis, were 
as follows: 

Aggregate cost                   $117,307,269 
                                 ============
Gross unrealized appreciation    $  2,249,612 
Gross unrealized depreciation         197,338
                                 ------------ 
  Net unrealized appreciation    $  2,052,274 
                                 ============

(6) Financial Instruments 
The Portfolio regularly trades 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 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. A summary of obligations under these financial instruments at 
September 30, 1996 is as follows: 

 Futures Contracts                                       Net Unrealized 
 Expiration Date          Contracts          Position     Depreciation 
- ------------------   ----------------------  --------    ---------------
12/96                60 U.S. Treasury Bonds   Short          (71,610) 

At September 30, 1996 the Portfolio had sufficient cash and/or securities to 
cover margin requirements on open futures contracts. 

22

<PAGE>
Investment Management for National Limited Maturity Municipals Fund

Officers 

Thomas J. Fetter 
President 

James B. Hawkes 
Vice President, Trustee 

Robert B. MacIntosh 
Vice President 

Raymond E. Hender 
Vice President and 
Portfolio Manager 

James L. O'Connor 
Treasurer 

Thomas Otis 
Secretary 


Independent Trustees 

Donald R. Dwight 
President, Dwight Partners, Inc. 
Chairman, Newspapers of 
New England, 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 



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