INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 305, 497J, 1998-08-28

INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 305
497J, 1998-08-28

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                                 August 27, 1998





Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549-1004
Attn:  Filing Desk, Stop 1-4


         Re:   Insured Municipals Income Trust & Investors' Quality
                          Tax-Exempt Trust, Series 305
                      (File No. 333-45167) (CIK No.1024821)

Gentlemen:

         In accordance with the provisions of Rule 497(j) of Regulation C under
the Securities Act of 1933 (the "Securities Act") this letter serves to certify
that the most recent amendment to the registration statement of Form S-6 for the
above captioned Trust does not differ from that which would have been filed
pursuant to Rule 497(b) of the Securities Act. Amendment No. 1 to the
registration statement, which was the most recent amendment to the registration
statement, was filed electronically with the Commission on August 26, 1998.


                                             Very truly yours,



                                             VAN KAMPEN FUNDS INC.