March 2023 Business Due Dates

March 1 - Farmers and Fishermen

File your 2022 income tax return (Form 1040 or 1040-SR) and pay any tax due. However, you have until April 18 to file if you paid your 2022 estimated tax by January 17, 2023.

March 15 - Partnerships

File a 2022 calendar year return (Form 1065). Provide each partner with a copy of their Schedule K-1 (Form 1065), Partner’s Share of Income, Deductions, Credits, etc., or a substitute Schedule K-1 and, if applicable, Schedule K-3 (Form 1065) or substitute Schedule K-3 (Form 1065). If you want an automatic 6-month extension of time to file the return, file Form 7004. Then file Form 1065 and provide Schedules K-1 or substitute Schedules K-1, and if applicable Schedules K-3, to the partners by September 15. 

March 15 - S-Corporations

File a 2022 calendar year income tax return (Form 1120-S) and pay any tax due. Provide each shareholder with a copy of Schedule K-1 (Form 1120-S), Shareholder’s Share of Income, Deductions, Credits, etc., or a substitute Schedule K-1 (Form 1120-S) and, if applicable, Schedule K-3 (Form 1120-S) or substitute ScheduleK-3 (Form 1120-S).

To request an automatic 6-month extension of time to file the return, file Form 7004 and pay the tax estimated to be owed. Then file the return; pay any tax, interest, and penalties due; and provide each shareholder with a copy of their Schedule K-1 (Form 1120-S) and, if applicable, Schedule K-3 (Form 1120-S) by September 15.

March 15 - S-Corporation Election

File Form 2553, Election by a Small Business Corporation, to choose to be treated as an S corporation beginning with calendar year 2023. If Form 2553 is filed late, S treatment will begin with calendar year 2024.

March 15 - Social Security, Medicare and Withheld Income Tax

If the monthly deposit rule applies, deposit the tax for payments in February.

March 15 - Non-Payroll Withholding

If the monthly deposit rule applies, deposit the tax for payments in February.

March 31 - Electronic Filing of Forms 1098, 1099 and W-2G

If you file Forms 1098, 1099 (other than 1099-NEC), or W-2G electronically with the IRS, this is the final due date. This due date applies only if you file electronically (not paper forms). Otherwise, January 31 or February 28 was the due date, depending on the form filed. The due date for giving the recipient these forms was January 31.

March 31 - Applicable Large Employers (ALE) – Form 1095-C

If filing electronically, file Form 1095-C, Employer-Provided Health Insurance Offer and Coverage, with the IRS. If filing on paper the due date was February 28, 2023.

March 31 - Large Food and Beverage Establishment Employers

If you file Forms 8027 for 2022 electronically with the IRS, this is the final due date. This due date applies only if you file electronically. Otherwise, February 28, 2023 was the due date.

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