Tax calendar
Every deadline for your 2026 taxes
The federal dates that matter between now and the end of the 2027 filing season, filtered for your situation. Add one or all of them to your calendar, and you'll get a reminder three days before each.
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Jan152027
4th-quarter estimated tax payment for 2026
Form 1040-ES
Covers income earned September through December 2026.
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Feb12027
W-2s and 1099-NECs due to workers and the IRS
Forms W-2, W-3, 1099-NEC
January 31 falls on a Sunday, so the deadline moves to Monday. Employees and contractors should have their forms by now; most other 1099s are due to recipients the same day.
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Mar152027
Partnership and S-corporation returns for 2026
Forms 1065, 1120-S (or Form 7004 to extend)
Includes multi-member LLCs taxed as partnerships. Owners also get their Schedule K-1s by this date.
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Apr152027
Individual tax returns for 2026
Form 1040, 1040-NR (with US wages), or Form 4868 to extend
Any tax owed is due today even if you file an extension. An extension gives more time to file, not to pay.
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Apr152027
Form 5472 for foreign-owned single-member LLCs
Form 5472 + pro forma Form 1120 (or Form 7004 to extend)
Fax or mail only. The penalty for missing it is $25,000.
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Apr152027
C-corporation returns for 2026
Form 1120 (or Form 7004 to extend)
For calendar-year corporations, including LLCs that elected corporate tax.
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Apr152027
1st-quarter estimated tax payment for 2027
Form 1040-ES
Covers income earned January through March 2027.
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Apr152027
FBAR for foreign bank accounts
FinCEN Form 114
Required if your foreign accounts together exceeded $10,000 at any time in 2026. Automatically extended to October 15.
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Apr152027
Last day for 2026 IRA and HSA contributions
Contributions made by today can still count for 2026.
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Jun152027
2nd-quarter estimated tax payment for 2027
Form 1040-ES
Covers income earned April and May 2027.
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Jun152027
Returns for Americans abroad and nonresidents without US wages
Form 1040 (living abroad), Form 1040-NR (no US wages)
US citizens and residents living abroad get an automatic two months, but interest on unpaid tax still runs from April 15.
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Sep152027
3rd-quarter estimated tax payment for 2027
Form 1040-ES
Covers income earned June through August 2027.
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Sep152027
Extended partnership and S-corporation returns
Forms 1065, 1120-S
Only if you filed Form 7004 by March 15.
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Oct152027
Extended individual and corporate returns
Forms 1040, 1120, 5472
The final deadline if you extended in April. The extended FBAR is due today too.
When a date falls on a weekend or federal holiday it moves to the next business day; the dates above already account for that. Disaster relief can extend deadlines in affected areas, so check IRS.gov. State deadlines are separate.