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Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States

The due date for Form 1065 for tax periods beginning before January 1, 2016 is the 15th day of the 4th month following the end of the tax period.

See table below for Form 1065 Return and Extended Due Dates for tax periods beginning January 1, 2016 and later.

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▸Contents — Internal Revenue Manual Part 3. Submission Processing
Internal Revenue Manual Part 3. Submission Processing

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