US tax calendar · 2026 tax year
Every key US filing date, in one place
Federal deadlines plus state dates for California, Texas, Florida, New York, Illinois and Georgia. For calendar-year filers.
Federal (IRS)
Federal filing & payment deadlines
| Date | Deadline | Forms | Who |
|---|---|---|---|
| Feb 1, 2027Monday | W-2s and 1099-NEC dueTo workers and the IRS/SSA (Jan 31 is a Sunday). | W-2 · 1099-NEC | Businesses |
| Mar 15, 2027Monday | S corp & partnership returnsCalendar-year S corporations and partnerships. | 1120-S · 1065 | Businesses |
| Apr 15, 2027Thursday | Individual & C corp returnsCalendar-year individuals and C corporations. | 1040 · 1120 | Businesses & individuals |
State deadlines
Key state filing dates
Choose a state.
California
Franchise Tax Board · $800 minimum tax for most entities| Due date | Return | Form |
|---|---|---|
| Mar 15, 2027 | S corporation | 100S |
| Mar 15, 2027 | Partnership / multi-member LLC | 565 · 568 |
| Apr 15, 2027 | Individual | 540 |
| Apr 15, 2027 | C corporation | 100 |
| Apr 15, 2027 | Single-member LLC (owned by an individual) | 568 |
Texas
No personal income tax · Comptroller franchise tax| Due date | Return | Form |
|---|---|---|
| May 17, 2027 | Franchise tax report + Public Information Report | 05-158 · 05-102 |
Florida
No personal income tax · Department of Revenue| Due date | Return | Form |
|---|---|---|
| May 3, 2027 | Corporate income tax (C corporations) | F-1120 |
New York
Department of Taxation and Finance| Due date | Return | Form |
|---|---|---|
| Mar 15, 2027 | S corporation | CT-3-S |
| Mar 15, 2027 | Partnership / LLC | IT-204 |
| Apr 15, 2027 | Individual | IT-201 |
| Apr 15, 2027 | C corporation | CT-3 |
Illinois
Department of Revenue| Due date | Return | Form |
|---|---|---|
| Mar 15, 2027 | S corporation | IL-1120-ST |
| Apr 15, 2027 | Individual | IL-1040 |
| Apr 15, 2027 | C corporation | IL-1120 |
Georgia
Department of Revenue| Due date | Return | Form |
|---|---|---|
| Mar 15, 2027 | S corporation | 600S |
| Mar 15, 2027 | Partnership | 700 |
| Apr 15, 2027 | Individual | 500 |
| Apr 15, 2027 | C corporation | 600 |
Dates are for the 2026 tax year (filed in 2027) and calendar-year filers. Dates falling on a weekend or holiday have been moved to the next business day. Always confirm with the state tax agency or your CPA.
Books closed early
Year-end books and your CPA package ready by mid-February, well ahead of March 15.
1099s on time
W-9s collected through the year and 1099 data ready in January for the February 1 deadline.
Extra capacity for CPA firms
Overnight return prep through the February, March and April filing deadlines.
Don’t let the next deadline sneak up on you
Book a free call and we’ll map out your year-end and filing schedule.