IMPORTANT DEADLINE: S-Corps, Large Partnerships, and Partnerships

S-CORPORATIONS: File a 2023 calendar year income tax return (Form 1120S) and pay any tax, interest, and penalties due. Provide each shareholder with a copy of their final or amended Schedule K-1 (Form 1120S) or substitute Schedule K-1 (Form 1120S). 

S-CORPORATION ELECTIONS: File Form 2553 to elect to be treated as an S corporation beginning with calendar year 2024. 

PARTNERSHIPS & LARGE PARTNERSHIPS: File a 2023 calendar year return (Form 1065). Provide each partner with a copy of their final or amended Schedule K-1 (Form 1065), Partner’s Share of Income, Deductions, Credits, etc., or substitute Schedule K-1 (Form 1065). 

To request an automatic 6-month extension of time to file the return, file Form 7004. Then, file the return and provide each partner with a copy of their final or amended (if required) Schedule K-1 (Form 1065) by September 15. 

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