Use Form 4768 to: Apply for an automatic 6-month extension of time to file Form 706, Form 706-A, Form 706-NA, or Form 706-QDT. Apply for a discretionary (additional) extension of time to file Form 706 (Part II of Form 4768). Apply for a discretionary (for cause) extension of time to file Form 706. Apply for an extension of time to pay estate or generation-skipping transfer tax under section 6161 (Part III of Form 4768). Current Revision Form 4768 PDF Instructions for Form 4768 (Print Version PDF) Recent Developments None at this time. Other Items You May Find Useful All Form 4768 Revisions Other Current Products Related About Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return About Form 706-A, United States Additional Estate Tax Return About Form 706-NA, United States Estate (and Generation-Skipping Transfer) Tax Return About Form 706-QDT, U.S. Estate Tax Return for Qualified Domestic Trusts