Return due dates

Return due dates can be found in Publication 509.
This table gives you some of the major due dates documented in the publication.
Return due dates for tax year 2023
Return type
Due date
Farmers and fishermen (Form 1040)
March 1, 2023
Partnerships (Form 1065)
March 15, 2023
Individuals (Form 1040), Estates/Trusts (Form 1041)
April 15, 2023
Exempt Organizations (Form 990)
May 15, 2023
Employers maintaining employee benefit plans (Form 5500)
July 31, 2023
Partnerships (Form 1065)
September 16, 2023
S Corporations (Form 1120-S)
September 16, 2023
Estates/Trusts (Form 1041)
September 30, 2023
Individuals (Form 1040)
October 15, 2023

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