EATON VANCE INCOME FUND OF BOSTON
SUPPLEMENT TO PROSPECTUS DATED FEBRUARY 1, 1997
1. Effective immediately, under the table "Shareholder and Fund Expenses" the
Maximum Sales Charge Imposed on Purchases is 4.75%. As a result, in the EXAMPLE
section of the table the expenses paid by a shareholder would be slightly
higher.
2. Efective immediately, the sales charge table under "How to Buy Fund Shares"
is replaced (except for the footnotes) with the following:
<TABLE>
Sales Charge Sales Charge Dealer Commission
as Percentage of as Percentage of as Percentage of
Amount of Purchase Offering Price Amount Invested Offering Price
- -----------------------------------------------------------------------------------------------------------
<S> <C> <C> <C>
Less than $25,000 4.75% 4.99% 4.50%
$25,000 but less than $100,000 4.50 4.71 4.25
$100,000 but less than $250,000 3.75 3.90 3.50
$250,000 but less than $500,000 3.00 3.09 2.75
$500,000 but less than $1,000,000 2.00 2.04 2.00
$1,000,000 or more 0.00* 0.00* See Below**
</TABLE>
September 1, 1997 IB2/1PS
