Important U.S. Tax Deadlines for 2025
Missing a tax deadline can result in penalties and interest. This guide covers all key federal tax dates for 2025. Always verify deadlines with the IRS at irs.gov, as dates may shift when they fall on weekends or federal holidays.
Complete 2025 Tax Calendar
| Date | Deadline | Who It Affects |
|---|---|---|
| Jan 15, 2025 | Q4 2024 estimated tax payment due | Self-employed, investors, freelancers |
| Jan 31, 2025 | Employers must send W-2s to employees; businesses must send 1099-NEC to contractors | Employees, contractors |
| Feb 15, 2025 | Renew certain withholding exemptions on Form W-4 | Exempt employees |
| Apr 15, 2025 | File 2024 individual tax return OR request 6-month extension (Form 4868) | All individual taxpayers |
| Apr 15, 2025 | Pay any 2024 taxes owed (extensions only extend filing, not payment) | All taxpayers owing taxes |
| Apr 15, 2025 | Q1 2025 estimated tax payment due | Self-employed, investors |
| Apr 15, 2025 | Last day to contribute to a traditional or Roth IRA for tax year 2024 | IRA holders |
| Jun 16, 2025 | Q2 2025 estimated tax payment due | Self-employed, investors |
| Sep 15, 2025 | Q3 2025 estimated tax payment due | Self-employed, investors |
| Oct 15, 2025 | Final deadline to file 2024 return if extension was requested | Extended filers |
| Dec 31, 2025 | Last day to make deductible charitable contributions for tax year 2025 | All taxpayers |
| Dec 31, 2025 | Last day to contribute to a 401(k), 403(b), or other employer plan for 2025 | Retirement savers |
| Jan 15, 2026 | Q4 2025 estimated tax payment due | Self-employed, investors |
| Apr 15, 2026 | File 2025 individual tax return | All individual taxpayers |
Penalties for Not Filing or Paying on Time
⚠️ Key Penalties to Know
- Failure-to-file penalty: 5% of unpaid taxes per month (or part of a month), up to 25% maximum
- Failure-to-pay penalty: 0.5% of unpaid taxes per month, up to 25% maximum
- Combined maximum penalty: Up to 47.5% of taxes owed (25% failure to file + 22.5% failure to pay)
- Interest: Accrues daily on unpaid taxes from the due date until fully paid
- Underpayment penalty: If estimated taxes were not paid properly throughout the year
Note: If you cannot pay what you owe, it is still better to FILE on time and pay what you can. Filing on time stops the failure-to-file penalty (the larger penalty) from accruing.
How to Request an Extension
File Form 4868 by April 15 to get an automatic 6-month extension to file your return (new deadline: October 15).
⚠️ CRITICAL: An extension gives you more time to FILE — NOT more time to PAY. If you owe taxes, you must estimate and pay the amount owed by April 15 to avoid penalties and interest on the unpaid balance.
Learn more: Complete Guide to Filing Extensions
Ways to Pay the IRS
- IRS Direct Pay — free direct debit from your bank account at irs.gov/payments
- EFTPS — Electronic Federal Tax Payment System, especially for estimated payments
- Credit or debit card — through IRS-authorized payment processors (processing fee applies)
- Check or money order — payable to "U.S. Treasury" with your SSN and tax year noted
- Installment agreement — Form 9465 to set up a payment plan if you can't pay in full