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Essential Business Tax Deadlines: November 2025

As the holiday season approaches and year-end projects intensify, it’s crucial for businesses to stay on top of the November tax deadlines. Make sure to prioritize your financial obligations and ensure that all filings are completed on time, including Form 941 and required deposits due this month.

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November 10: Social Security, Medicare, and Withheld Income Tax

By November 10, businesses must file Form 941 for the third quarter of 2025. This deadline is strictly for those who have submitted the tax payment for the quarter in its entirety and on schedule.

November 17: Social Security, Medicare, and Withheld Income Tax

Employers following the monthly deposit guidelines need to mark November 17 on their calendar as the cut-off for remitting Social Security, Medicare, and income tax withholdings for October 2025. Additionally, for those adhering to the monthly deposit rule, this is the deadline for nonpayroll withholding deposits for October 2025. 

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Weekends & Holidays:

In cases where a deadline is on a Saturday, Sunday, or a legal holiday, the due date is adjusted to the following business day that is not itself a holiday. 

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Disaster Area Extensions:

Should a geographic region be declared a disaster area, applicable deadlines will be extended. To verify if an area has been granted such a designation and to view specific filing extension dates, consult these resources:

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

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