EXHIBIT 8.1

                 [Letterhead of Wachtell, Lipton, Rosen & Katz]




                                February 11, 1998


Webster Financial Corporation
Webster Plaza
145 Bank Street
Waterbury, Connecticut  06702

Ladies/Gentlemen:

         We have acted as special counsel to Webster  Financial  Corporation,  a
Delaware  corporation  ("Webster"),  in connection with the proposed merger (the
"Merger") of Eagle Financial Corporation, a Delaware corporation ("Eagle"), with
and into Webster,  upon the terms and  conditions set forth in the Agreement and
Plan of Merger  dated as of October 26, 1997,  by and between  Webster and Eagle
(the  "Agreement").  At your  request,  in  connection  with the  filing  of the
Registration Statement on Form S-4 filed with the Securities Exchange Commission
in connection with the Merger (the "Registration  Statement"),  we are rendering
our opinion concerning certain federal income tax consequences of the Merger.

         For purposes of the opinion set forth below,  we have relied,  with the
consent of Webster and the consent of Eagle,  upon the accuracy and completeness
of the statements and  representations  (which statements and representations we
have  neither  investigated  nor  verified)  contained,   respectively,  in  the
certificates  of the officers of Webster and Eagle dated the date hereof (copies
of which are attached  hereto and which are  incorporated  herein by reference),
and have assumed that such  certificates will be complete and accurate as of the
Effective  Time.  We have also  relied  upon the  accuracy  of the  Registration
Statement and the Joint Proxy  Statement/Prospectus  included therein (together,
the "Proxy Statement"). Any capitalized term used and not defined herein has the
meaning given to it in the Proxy Statement or the appendices  thereto (including
the Agreement).

         We have also  assumed  that (i) the  transactions  contemplated  by the
Agreement will be  consummated  in accordance  therewith and as described in the
Proxy Statement and (ii) the Merger will qualify as a statutory merger under the
applicable laws of the State of Delaware.

         Based upon and subject to the foregoing,  it is our opinion that, under
currently  applicable  United States  federal income tax law, the Merger will be
treated as a reorganization




Webster Financial Corporation
February 11, 1998
Page 2


within the  meaning of Section  368(a) of the Code and each of Webster and Eagle
will be a party to the  reorganization  within the meaning of Section  368(b) of
the Code and that, accordingly:

          (i)    No gain or loss will be  recognized  by  Webster  or Eagle as a
                 result of the Merger;

          (ii)   No gain or loss will be  recognized by Eagle  Stockholders  who
                 exchange  all of their Eagle  Common  Stock  solely for Webster
                 Common  Stock  pursuant to the Merger  (except  with respect to
                 cash received in lieu of a fractional share interest in Webster
                 Common Stock); and

          (iii)  The aggregate tax basis of the Webster Common Stock received by
                 Eagle Stockholders who exchange all of their Eagle Common Stock
                 solely for Webster  Common Stock pursuant to the Merger will be
                 the same as the  aggregate  tax basis of the Eagle Common Stock
                 surrendered  in  exchange   therefor  (reduced  by  any  amount
                 allocable  to a  fractional  share  interest  for which cash is
                 received).

         We hereby consent to the filing of this opinion with the Securities and
Exchange  Commission  as an exhibit to the  Registration  Statement,  and to the
references  to us under the caption  "THE MERGER -- Certain  Federal  Income Tax
Consequences" and elsewhere in the Proxy Statement.  In giving such consent,  we
do not thereby  admit that we are in the  category of persons  whose  consent is
required under Section 7 of the Securities Act of 1933, as amended.


                                              Very truly yours,


                                              /s/ Wachtell, Lipton, Rosen & Katz