Essential January 2026 Tax Deadlines for Business Owners

As we enter January 2026, it's crucial for business owners, employers, farmers, and fishermen to mark their calendars with important tax deadlines. Strategizing now can ensure your business remains compliant and avoids any potential penalties.

January 15: Employer’s Monthly Deposit Deadline

For employers required to follow monthly deposit rules, January 15 is the deadline to electronically deposit Social Security, Medicare, and withheld income taxes for December 2025. Ensure compliance by making these deposits electronically, unless your deposit liability is under $2,500 for the period, in which case quarterly or annual remittance with the return might be permissible.

January 15: Farmers and Fishermen’s Estimated Tax Payment

To avoid surprises, farmers and fishermen should pay their estimated taxes for 2025 using Form 1040-ES by January 15. While the income tax return (Form 1040 or Form 1040-SR) isn't due until April 15, if you miss the estimated tax deadline, ensure you file by March 2, 2026, to sidestep estimated tax penalties.

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Partner with Lizza & Carullo CPAs & Advisors for ongoing guidance, proactive tax planning, and strategic financial support. Whether you’re growing a business or navigating personal taxes, our year-round advisory approach helps you stay organized, tax-efficient, and in control — with a team that’s here when you need us, not just at tax time.
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Weekends & Holidays:

In the event that a due date coincides with a Saturday, Sunday, or recognized public holiday, the deadline is automatically extended to the next business day that is not a legal holiday.

Disaster Area Extensions:

Businesses located in federally recognized disaster areas may receive filing extensions. For the latest on affected areas and adjusted deadlines, reference the following resources:

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Gain Year-Round Financial Clarity and Confidence
Partner with Lizza & Carullo CPAs & Advisors for ongoing guidance, proactive tax planning, and strategic financial support. Whether you’re growing a business or navigating personal taxes, our year-round advisory approach helps you stay organized, tax-efficient, and in control — with a team that’s here when you need us, not just at tax time.
Schedule Your Discovery Call
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