March 1 – Farmers and Fishermen
File your 2021 income tax return (Form 1040 or 1040-SR) and pay any tax due. However, you have until April 18 (April 19 if you live in Maine or Massachusetts) to file if you paid your 2021 estimated tax by January 18, 2022.
March 15 – Partnerships
File a 2021 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 2021 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 the calendar year 2022. If Form 2553 is filed late, S treatment will begin with the calendar year 2023.
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, 2022.
March 31 – Large Food and Beverage Establishment Employers
If you file Forms 8027 for 2021 electronically with the IRS, this is the final due date. This due date applies only if you file electronically. Otherwise, February 28, 2022, was the due date.
