Taxes
October 15 Is the Final Cutoff for 2025 Tax Returns Filed on Extension
via CPA Practice Advisor
Roughly 20 million taxpayers who requested a filing extension earlier this year have until October 15, 2026 to submit their 2025 federal income tax returns. Missing the deadline triggers late-filing penalties even for filers who owe no additional tax.
Why it matters
No further extension is available after October 15 — if you haven't filed yet, using tax software or calling a preparer this week is the only way to avoid IRS penalties.


