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Essential January 2026 Tax Deadlines for Businesses

As January 2026 approaches, it's crucial for businesses, particularly employers, farmers, and fishermen, to mark key tax deadlines. By preparing ahead, you can ensure compliance and avoid potential penalties.

January 15 - Monthly Employment Tax Deposit Due

For employers bound by monthly deposit rules, January 15 is the deadline to deposit Social Security, Medicare, and withheld income taxes for December 2025. Employers should also address the nonpayroll withholding for the same period if applicable. It's important to note that all employment tax deposits need to be made electronically unless your deposit liability is under $2,500, allowing you to remit payments quarterly or annually with your return.

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January 15 - Estimated Tax Payment for Farmers and Fishermen

If you’re a farmer or fisherman, use Form 1040-ES to pay your estimated taxes for 2025 by this date. While the deadline to file your income tax return (Form 1040 or 1040-SR) is April 15, missing the January 15 estimated payment means you must file and pay any due tax by March 2, 2026, to avoid penalties.

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Weekends & Holidays

Should a deadline fall on a Saturday, Sunday, or federal legal holiday, it will be pushed to the next day that is not a holiday. This rule helps prevent confusion and ensures you don't miss a deadline due to non-business days.

Extensions for Disaster Areas

If your area is declared a disaster zone, tax deadline extensions may apply. To ascertain if disaster declarations impact you, refer to these critical resources:
FEMA: https://www.fema.gov/disaster/declarations
IRS: https://www.irs.gov/newsroom/tax-relief-in-disaster-situations

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