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Essential January 2026 Tax Deadlines for Businesses

January 2026 marks a critical time for businesses, employers, farmers, and fishermen to navigate key tax deadlines. Strategic planning at this stage ensures smooth compliance and minimizes risks of penalties.

January 15 - Employer’s Monthly Deposits:

Employers subject to monthly deposit rules must submit their Social Security, Medicare, and withheld income tax payments from December 2025 by January 15. Additionally, this date is crucial for those handling nonpayroll withholding deposits if the monthly deposit rule is applicable. It is mandatory for employment tax payments to be made electronically unless your deposit liability is below $2,500 for the filing period, in which case quarterly or annual payments are permissible with the return.

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January 15 - Farmers and Fishermen:
Utilize Form 1040-ES to submit your 2025 estimated tax. Although you have until April 15 to file your 2025 tax return (using Form 1040 or Form 1040-SR), failing to pay your estimated tax by January 15 requires filing your 2025 return and settling any dues by March 2, 2026, to avoid penalties.

Weekend and Holiday Adjustments:

Should any deadline coincide with a weekend or legal holiday, the due date automatically shifts to the next business day that is not a legal holiday.

Extensions for Disaster Areas:

In the event a geographic area is declared a disaster zone, deadline extensions will be granted. For detailed information regarding disaster area designations and deadline extensions, visit the following resources:

FEMA: https://www.fema.gov/disaster/declarations
IRS: https://www.irs.gov/newsroom/tax-relief-in-disaster-situations

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