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December 2025 Tax Deadlines for Small Businesses

December ushers in critical tax obligations for businesses, notably corporate estimated tax payments and monthly payroll tax deposits. Additionally, it is imperative to finalize year-end actions ahead of potential closures on December 31. Image 1

December 15 - Corporate Tax Payments
The fourth installment of estimated tax for corporations operating on a 2025 calendar year is due. Adkin CPA specializes in ensuring small businesses meet these obligations without surprises, aligning with our philosophy of proactive tax planning.

December 15 - Payroll Tax Deposits
Employers, note that if monthly deposit rules apply, your deposits for Social Security, Medicare, and withheld income tax for November 2025 are due on this day. Similarly, nonpayroll withholding deposits follow the same deadline if applicable.Image 3

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December 31 - Critical Year-End Actions
Year-end action items should not be left to December 31, as certain financial institutions may be closed. Planning in advance can ensure no valuable time is lost in preparing your optimal legal tax position.

Weekends & Holidays
Business dues that fall on a weekend or legal holiday automatically roll over to the next business day. At Adkin CPA, we guide our clients through all these nuances to secure a compliant and beneficial tax strategy.

Extensions for Disaster Areas
Designations of disaster areas result in extended tax due dates. Stay updated on which areas qualify by visiting FEMA and IRS for detailed information.

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We look forward to speaking with you.
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