Key Tax Deadlines for Businesses in January 2026

As we usher in 2026, it's important to stay ahead of crucial tax deadlines that impact businesses, employers, farmers, and fishermen. By planning strategically now, you can ensure compliance and sidestep penalties.

January 15 - Monthly Employer Deposit

If the monthly deposit rules are applicable to you as an employer, mark January 15 as the day to remit Social Security, Medicare, and withheld income tax deposits for December 2025. Additionally, this is the deadline for nonpayroll withholding deposits for December, applicable under the monthly deposit rule. Remember, your employment tax deposits should be submitted electronically, except if your deposit liability is under $2,500 for a given period; in this case, quarterly or annual payment alongside your return is permissible.

January 15 - Farmers and Fishermen

As a farmer or fisherman, January 15 is your deadline to pay estimated taxes for 2025 using Form 1040-ES. If you miss this, ensure that your 2025 tax return (Form 1040 or Form 1040-SR) is filed and any due tax is paid by March 2, 2026, to prevent an estimated tax penalty. Image 2

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Handling Weekends & Holidays

Should any deadline fall on a Saturday, Sunday, or legal holiday, the due date is extended to the next business day that isn't a holiday. This can provide some breathing room when planning your submissions.

Consideration for Disaster Area Extensions

In cases where a region is designated as a disaster area, filing deadlines are extended. It's essential to check if your area qualifies and to follow the updates on the extension dates. For more detailed guidance, explore these resources: FEMA and IRS. Image 3

If this all seems overwhelming, don't worry—we're here to guide you each step of the way. Reach out, and let's make this tax season as smooth as possible.

Virtual AI
If you’re ready to get a handle on your tax situation, reach out and we’ll guide you through each step.
Let’s Sort This Out
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