Tax deadlines that apply to you
Every federal date worth knowing for 2026 and 2027, with what each one actually means. Bookmark this page — we keep it current.
| Date | What is due |
|---|---|
| 15 September 2026 | Q3 estimated tax payment Individuals and businesses paying quarterly. |
| 15 September 2026 | Extended partnership & S-Corp returns Forms 1065 and 1120-S filed on extension. |
| 15 October 2026 | Extended individual returns Form 1040 filed on extension for tax year 2025. |
| 15 October 2026 | Extended FBAR deadline FinCEN 114 — the extension is automatic, no request needed. |
| 15 January 2027 | Q4 estimated tax payment Final instalment for tax year 2026. |
| 31 January 2027 | W-2 and 1099 issuance Employers and businesses must send these to recipients. |
| 15 March 2027 | Partnership & S-Corp returns Forms 1065 and 1120-S, or file for extension. |
| 15 April 2027 | Individual returns for tax year 2026 Form 1040, plus Q1 estimated payment and FBAR. |
| 15 April 2027 | C-Corp returns Form 1120 for calendar-year corporations. |
| 15 June 2027 | Q2 estimated payment Also the automatic deadline for taxpayers living abroad. |
When a deadline falls on a weekend or federal holiday it moves to the next business day. Dates above reflect that.
Extensions, and what they do not do
An extension gives you more time to file. It does not give you more time to pay. If you owe tax and do not pay by the original April deadline, interest and a failure-to-pay penalty start accruing even with a valid extension in place. The extension does protect you from the much larger failure-to-file penalty, which is why filing one is almost always worth doing.
If you live outside the U.S.
U.S. citizens and residents living abroad get an automatic two-month extension to mid-June without having to request it, and can extend further to October. Tax owed still accrues interest from April.
FBAR runs on its own schedule
FinCEN 114 is due in April alongside your return but carries an automatic extension to October — you do not need to request it, and there is no form to file for it. It is filed separately from your tax return, which is why it is the deadline most often missed entirely.
Missed one already?
Missed deadlines are recoverable, and penalties can often be reduced. See back taxes and unfiled returns, or just call us — the sooner it is dealt with, the smaller it stays.