December 2025 Business Tax Deadlines: Key Dates

As 2025 draws to a close, it's crucial for businesses to stay compliant with end-of-year tax obligations. December holds significant deadlines for corporate estimated tax payments and payroll tax submissions. It's also an opportune time to ensure all year-end actions are finalized before the December 31st shutdown.Image 1

December 15 - Corporation Estimated Taxes

Corporations operating on a calendar year must remit their fourth estimated tax payment for 2025 by December 15.

December 15 - Payroll Tax Obligations

Employers subject to monthly deposit rules should ensure their deposit for November's Social Security, Medicare, and withheld income taxes is made by this date. Similarly, any nonpayroll withholding deposits should be submitted if the monthly rule is applicable.Image 2

December 31 - Year-End Cautions

December 31 marks the last day for various business actions. If tasks cannot be completed in one day or might face interruptions due to financial institution closures, consider acting prior to year-end.

Weekends & Holidays:

Deadlines falling on weekends or legal holidays are generally moved to the next business day, avoiding any statutory conflict.Image 3

Extensions in Disaster Areas

Areas affected by disasters may qualify for extended deadlines. Businesses should visit FEMA and IRS websites for specific information regarding disaster relief and extended deadlines.

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