What's My Penalty?

Guides / Deadlines

Every federal tax deadline, 2019–2026

The exact due dates penalties are measured from, with weekend and holiday shifts included, plus the pandemic-era postponements that still trip up late filers.

Updated August 2026 · Calendar-year filers. These are the same dates our calculator uses.

Individuals (Form 1040)

Tax yearReturn & payment dueExtended filing deadline
2019July 15, 2020 (COVID postponement)Oct 15, 2020
2020May 17, 2021 (COVID postponement)Oct 15, 2021
2021April 18, 2022Oct 17, 2022
2022April 18, 2023Oct 16, 2023
2023April 15, 2024Oct 15, 2024
2024April 15, 2025Oct 15, 2025
2025April 15, 2026Oct 15, 2026
An extension (Form 4868) extends the time to file, never the time to pay. The late-payment penalty and interest run from the April date regardless.

C corporations (Form 1120)

Same April due dates as individuals, with one famous exception. The May 17, 2021 COVID postponement was for individuals only, so corporate 2020 returns stayed due April 15, 2021. Extensions (Form 7004) run to the same October dates as individuals.

S corporations & partnerships (Forms 1120-S and 1065)

Pass-through returns are due a month earlier, on the 15th day of the third month. The 2020 COVID relief did not reach them, since it began with April deadlines, after their March due date had passed:

Tax yearReturn dueExtended deadline (Form 7004)
2019March 16, 2020Sept 15, 2020
2020March 15, 2021Sept 15, 2021
2021March 15, 2022Sept 15, 2022
2022March 15, 2023Sept 15, 2023
2023March 15, 2024Sept 16, 2024
2024March 17, 2025Sept 15, 2025
2025March 16, 2026Sept 15, 2026

Miss these and the per-owner penalty starts counting immediately, even if no tax is owed.

Quarterly estimated-tax installments (individuals)

Tax yearQ1Q2Q3Q4
2021Apr 15, 2021Jun 15, 2021Sep 15, 2021Jan 18, 2022
2022Apr 18, 2022Jun 15, 2022Sep 15, 2022Jan 17, 2023
2023Apr 18, 2023Jun 15, 2023Sep 15, 2023Jan 16, 2024
2024Apr 15, 2024Jun 17, 2024Sep 16, 2024Jan 15, 2025
2025Apr 15, 2025Jun 16, 2025Sep 15, 2025Jan 15, 2026
2026Apr 15, 2026Jun 15, 2026Sep 15, 2026Jan 15, 2027

Corporations follow the same first three dates but their fourth installment lands in December of the tax year (around Dec 15), not January. Miss an installment and interest runs until you pay or until the April filing deadline, unless a safe harbor protects you.

Put the deadlines where you'll see them

Download the deadline calendar (.ics)

Every federal deadline above through October 2027. It imports into Apple, Google, and Outlook calendars.

Measure your own lateness

Open the calculator

It auto-fills the correct due date for your year, entity, and extension status.