Federal Tax Calendar
Here are some key dates for the current tax year.
2026
- January
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15 – Fourth quarter 2025 estimated tax due. Use Form 1040-ES. - February
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2 – Deadline for employers to provide copies of Forms W-2 and 1099 for 2025 to employees. 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
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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. 16 – Deadline for 2025 S corporation tax returns (Form 1120-S) or to request an extension using Form 7004. 16 – Deadline to file 2025 partnership tax returns (Form 1065) or to request an automatic extension (Form 7004). - April
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15 – Deadline to file 2025 individual income tax returns (Form 1040) and any taxes owed, or to file for an automatic 6-month extension. 15 – Last day to contribute to a traditional IRA, Roth IRA, or SEP-IRA for the 2025 tax year. 15 – First quarter 2026 estimated tax due. Use Form 1040-ES. 15 – Deadline to file 2025 trust tax returns (Form 1041) or to request an automatic extension. 15 – Deadline to file 2025 corporate tax returns (Form 1120) or to request an automatic extension (Form 7004). - June
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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 4-month extension (Form 4868). 15 – Second quarter 2026 estimated tax due. Use Form 1040-ES. - September
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15 – Third quarter 2026 estimated tax due. Use Form 1040-ES. 15 – Final deadline to file 2025 partnership tax return if you were given a 6-month extension. 15 – Final deadline to file 2025 S corporation tax return if you were given a 6-month extension. - October
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1 – Deadline for existing employers to establish a SIMPLE IRA plan. 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. 15 – Final deadline to file 2025 corporate tax return if were given a 6-month extension.
Source: Internal Revenue Service, 2025