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Essential December Tax Deadlines for Businesses

December is a pivotal month for business tax responsibilities, signaling key deadlines such as corporate estimated tax payments and monthly payroll deposits. Ensure all year-end tasks are finalized before fiscal year closure on December 31.

December 15 – Corporate Estimated Taxes

The fourth and final installment of estimated tax for corporations operating on a 2025 calendar year is due.

December 15 – Payroll Tax Deposits

For employers adhering to the monthly deposit rules, December 15 marks the due date for the deposit of Social Security, Medicare, and withheld income tax for November 2025. This date also applies to the nonpayroll withholding deposit, contingent upon the monthly deposit requirements.

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December 31 – Year's End Reminder

Bear in mind that not all financial actions can be completed on New Year's Eve. Given many institutions may observe closures, it's prudent to plan ahead and initiate any critical financial transactions well before December 31st.

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Weekend and Holiday Considerations

Should a deadline coincide with a weekend or legal holiday, the due date is extended to the next available business day. This automatic extension safeguards compliance within hectic calendars, especially during holiday seasons.

Extensions for Disaster Areas

It is vital to recognize that if your business is in a FEMA-designated disaster area, deadline extensions may apply. For the most current information regarding disaster zone classifications and their impact on filing extensions, please consult the following resources:

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

As a virtual firm dedicated to placing our clients' clarity and compliance first, Desert Lily Bookkeeping understands the stress associated with these critical deadlines. Leverage our streamlined financial systems to ensure no tax date slips through the cracks.

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Book your free consultation with me today to see how we can get you back on track.
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