Essential Tax Deadlines for January 2026

As January 2026 approaches, businesses, employers, farmers, and fishermen must prepare for critical tax deadlines. Proactive planning can ensure compliance and help you avoid potential penalties.

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January 15 - Employer’s Monthly Tax Deposit

Employers governed by monthly deposit rules must electronically remit Social Security, Medicare, and withheld income taxes for December 2025 by January 15. Employers with under $2,500 in deposit liabilities per return period may opt to remit these payments quarterly or annually alongside their return.

January 15 - Farmers and Fishermen Payment

Utilize Form 1040-ES to pay your estimated tax for 2025 by January 15. To avoid a penalty, if you don’t meet this deadline, you must submit your 2025 income tax return (Form 1040 or Form 1040-SR) and any owed taxes by March 2, 2026. However, filing your return and paying by April 15 is permissible under normal conditions.

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Adjustments for Weekends & Holidays

When a due date coincides with a Saturday, Sunday, or legal holiday, it automatically extends to the next business day.

Extensions for Disaster Areas

In federally declared disaster areas, deadlines can be adjusted. Verify whether your area qualifies and review filing extension schedules via FEMA and the IRS.

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