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Key Tax Deadlines for January 2026

As you step into January 2026, it's crucial to be aware of the important tax deadlines that could impact businesses, employers, farmers, and fishermen. Proactive tax planning can ensure you remain compliant and avoid unnecessary penalties.

January 15 - Employer’s Monthly Tax Obligation -

For employers under the monthly deposit rules, January 15 is the critical deadline for the electronic deposit of Social Security, Medicare, and withheld income taxes for December 2025. Employers with a tax liability under $2,500 per return period may choose to remit payments on a quarterly or annual basis with their returns, bypassing the need for electronic deposits. Image 2

January 15 - Tax Payment for Farmers and Fishermen -

Farmers and fishermen should use Form 1040-ES to settle their estimated tax for 2025. While the filing of the 2025 income tax return (Form 1040 or 1040-SR) can extend until April 15, failure to pay estimated taxes by January 15 mandates that the return and any outstanding taxes must be addressed by March 2, 2026, to circumvent an estimated tax penalty.

Extended Due Dates for Weekends & Holidays:

If a specified due date coincides with a Saturday, Sunday, or legal holiday, it automatically shifts to the following business day that is free of holiday status.

Extensions for Disaster-Affected Areas:

Designated disaster areas receive due date extensions. Stay updated about disaster declarations and their corresponding deadlines through these resources: FEMA: https://www.fema.gov/disaster/declarations
IRS: https://www.irs.gov/newsroom/tax-relief-in-disaster-situations Image 3

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