Filing season dates for tax year 2025 (forms typically filed in 2026).
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Employer's Quarterly Federal Tax Return. Due the last day of the month following each quarter (weekend/holiday rules may apply).
Quarter
Period covered
Due date
Q1
January 1 - March 31
April 30
Q2
April 1 - June 30
July 31
Q3
July 1 - September 30
October 31
Q4
October 1 - December 31
January 31
Dates are for planning only. Confirm with the IRS and your state agency before filing.
Weekend, holiday, and emergency relief rules can move due dates. State "parts" counts are typical copy requirements and may vary by form and agency.