Form 4768, Application for Extension of Time To File a Return and/or Pay U.S. Estate (and Generation-Skipping Transfer) Taxes February 2020 Revision – now available IRS has revised the Form 4768, page 2 has been removed. Applicants no longer need to send two copies of page 2 with the application. IRS will provide a response to the applicant on Form 4768-A, Reply to Request for Extension of Time to Pay U.S. Estate Taxes (Section 6161). Mail all Forms 4768 to the address below for timely processing: Internal Revenue Service Center Attn: E&G, Stop 824G 7940 Kentucky Drive Florence, KY 41042-2915