Essential IRS Filing Deadlines for Businesses in August 2025

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Ensure your business stays in full compliance with important IRS deadlines this August. Mark your calendar for key filing dates such as Form 941 and payroll tax deposits to avoid unnecessary penalties.

August 11 - Second Quarter Form 941 Submission

Submit your Form 941 for the second quarter of 2025 by this deadline, applicable only if taxes for the quarter were fully and timely deposited.

August 15 - Monthly Deposit Deadline

Employers who follow the monthly deposit schedule must ensure payment of Social Security, Medicare, and withheld income tax for July 2025 is completed by this date. Additionally, this deadline applies to nonpayroll withholding deposits for July following the monthly deposit rule.

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Important Adjustments for Weekends & Holidays
If a due date falls on a weekend or a legal holiday, the deadline is extended to the next business day.

Extensions for Disaster-Impacted Areas
Deadline extensions may apply if the IRS designates your area as a disaster zone. For detailed information on affected areas and federally granted extensions, visit the respective governmental sites: FEMA & IRS.

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