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Form 1065 (MFT 06) Return and Extension Due Dates

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

Form 1065 , U.S. Return of Partnership Income, is generally required to have a tax year that conforms to the majority of its partners. The Form 1065 is due on or before the 15th day of the third month following the close of the tax year. An 6-month extension of time to file is granted if the taxpayer completes Form 7004 properly and submits it by the due date of the Form 1065. Estimated tax payments are not required. See the table below for return and extended due dates.

Period Ending

Return Due Date

Extended Due Date

January

4/15

10/15

February

5/15

11/15

March

6/15

12/15

April

7/15

1/15

May

8/15

2/15

June

9/15

3/15

July

10/15

4/15

August

11/15

5/15

September

12/15

6/15

October

1/15

7/15

November

2/15

8/15

December

3/15

9/15

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