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US Tax Deadlines 2026
tax-deadlines-usGlobal
Important civic deadlines and dates. Never miss a tax-deadlines-us deadline.
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Upcoming Deadlines (4)
Jun
15
Q2 estimated tax payment
Mon, Jun 15, 2026
Sep
15
Q3 estimated tax payment
Tue, Sep 15, 2026
Oct
15
Extended filing deadline (Form 4868)
Thu, Oct 15, 2026
Jan
15
Q4 2026 estimated tax payment
Fri, Jan 15, 2027
Last updated: Sat, Apr 18, 2026