Federal Tax Calendar
Important federal filing deadlines, estimated quarterly payment dates, and year-end action milestones.
Here are some key dates for the current tax year 2026. Plan ahead to meet these important deadlines.
| Month | Date | Description |
|---|---|---|
| January | 15 | Fourth quarter 2025 estimated tax due. Use Form 1040-ES. |
| February | 2 | Deadline for employers to provide copies of Forms W-2 and 1099 for 2025 to employees. |
| February | 17 | If you claimed exemption from income tax withholding last year on the Form W-4 you gave your employer, you must file a new Form W-4 by February 15 to continue your exemption for another year. |
| March | 2 | Deadline for farmers and fishermen who have a balance due on their taxes to file their 2025 individual income tax returns and pay the balance due without penalties. |
| March | 16 | Deadline for 2025 corporation tax returns (Form 1120-S) or to request an extension using Form 7004. |
| March | 16 | Deadline to file 2025 partnership tax returns (Form 1065) or to request an automatic extension (Form 7004). |
| April | 15 | Deadline to file 2025 individual income tax returns (Form 1040) and any taxes owed, or to file for an automatic 6-month extension. |
| April | 15 | Last day to contribute to a traditional IRA, Roth IRA, or SEP-IRA for the 2025 tax year. |
| April | 15 | First quarter 2026 estimated tax due. Use Form 1040-ES. |
| April | 15 | Deadline to file 2025 trust tax returns (Form 1041) or to request an automatic extension. |
| April | 15 | Deadline to file 2025 corporate tax returns (Form 1120) or to request an automatic extension (Form 7004). |
| June | 15 | Deadline for U.S. citizens living abroad to file individual tax returns and pay any tax, interest, and penalties due, or to request a 2-month extension (Form 4868). |
| June | 15 | Second quarter 2026 estimated tax due. Use Form 1040-ES. |
| September | 15 | Third quarter 2026 estimated tax due. Use Form 1040-ES. |
| September | 15 | Final deadline to file 2025 partnership tax return if you were given a 6-month extension. |
| September | 15 | Final deadline to file 2025 corporation tax return if you were given a 6-month extension. |
| October | 1 | Deadline for existing employers to establish a SIMPLE IRA plan. |
| October | 15 | If you were given a 6-month extension to file your income tax return for 2025, file Form 1040 and pay any tax, interest, and penalties due. |
| October | 15 | Final deadline to file 2025 corporate tax return if you were given a 6-month extension. |
Source: Internal Revenue Service, 2025
This information is for reference purposes only. For official tax deadlines and requirements, please consult the IRS website or a qualified tax professional.
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