March 2025 Business Due Dates
March 3 - Farmers and Fishermen
File your 2024 income tax return (Form 1040 or 1040-SR) and pay any tax due. However, you have until April to file if you paid your 2024 estimated tax by January 15, 2025.
March 17 - Partnerships
File a 2024 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 17 - S-Corporations
File a 2024 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 17 - 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 2025. If Form 2553 is filed late, S treatment will begin with calendar year 2026.
March 17 - Social Security, Medicare and Withheld Income Tax
If the monthly deposit rule applies, deposit the tax for payments in February.
March 17 - Non-Payroll Withholding
If the monthly deposit rule applies, deposit the tax for payments in February.
March 31 - Electronic Filing of Forms 1094-C, 1095-C, 1094-B, 1095-B, 1097, 1098, 1099, 3921, 3922, 8027, and W-2G
File Forms 1094-C, 1095-C, 1094-B, 1095-B, 1097, 1098, 1099 (other than 1099-NEC reporting nonemployee compensation), 3921, 3922, 8027, and W-2G electronically with the IRS. This due date applies only if you file electronically. Otherwise, see All Businesses under February 28, earlier. The due date for giving the recipient these forms was January 31.
Weekends & Holidays:
If a due date falls on a Saturday, Sunday or legal holiday, the due date is automatically extended until the next business day that is not itself a legal holiday.
Disaster Area Extensions:
Please note that when a geographical area is designated as a disaster area, due dates will be extended. For more information whether an area has been designated a disaster area and the filing extension dates visit the following websites:
FEMA: https://www.fema.gov/disaster/declarations
IRS: https://www.irs.gov/newsroom/tax-relief-in-disaster-situations
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Reliable, organized books are the backbone of good decision-making. We maintain accurate records, prepare meaningful financial statements, and help you read the story your numbers are telling.
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Frequently Asked Questions
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Software is a tool, not a substitute for judgment. A CPA reviews your books, catches errors, prepares accurate statements, and finds tax savings the software won't flag. We work alongside the system you already use.
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Ideally, well before tax season. The biggest savings come from year-round planning, not filing-time scrambling. We work with you throughout the year, so there are no surprises in the spring.
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As an integrated division of Serenity Wealth Management, your accounting, tax strategy, and broader financial goals work together, keeping your business and personal decisions aligned with fewer blind spots.
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We support Chicago-area sole proprietorships, partnerships, LLCs, S corporations, and C corporations, tailoring our bookkeeping, payroll, and tax services to the size and complexity of your business.