✓ Critical Dates at a Glance
- January 27, 2026: IRS begins accepting 2025 tax returns
- April 15, 2026: Filing deadline for 2025 returns AND Q1 estimated tax payment due
- October 15, 2026: Extended filing deadline for those who filed Form 4868
- January 15, 2027: Q4 estimated tax payment due for 2026 tax year
Complete 2026 Tax Deadline Timeline
Missing a tax deadline can result in penalties and interest charges. The IRS charges a failure-to-file penalty of 5% of unpaid taxes per month (up to 25%) and a failure-to-pay penalty of 0.5% per month. Below is every important deadline you need to know for the 2026 tax year.
January 15, 2026
Q4 2025 Estimated Tax Payment Due — Fourth quarter estimated payment for tax year 2025. If you filed and paid your full 2025 return by February 2, this payment is not required. Use
our calculator to check your amount. Pay via
IRS Direct Pay.
January 27, 2026
IRS Begins Accepting 2025 Tax Returns — The IRS opens e-filing season. File early to receive your refund faster (typically within 21 days for e-filed returns with direct deposit) and to reduce the risk of tax identity theft.
January 31, 2026
W-2 and 1099-NEC Due to Recipients — Employers must send Form W-2 and businesses must send Form 1099-NEC to workers by this date. If you have not received yours by mid-February, contact your employer or payor.
W-2 Guide |
1099 Guide February 18, 2026
Other 1099 Forms Due — Deadline for financial institutions to send 1099-INT, 1099-DIV, 1099-B, 1099-R, and 1099-MISC (with certain exceptions). Brokerage firms sometimes request extensions, so your 1099-B may arrive later.
April 15, 2026
Tax Filing Deadline & Q1 Estimated Tax Due — This is the most important date of the tax year. Your 2025 federal income tax return (Form 1040) is due. This is also the deadline for:
• 2025 IRA contributions (Traditional and Roth, up to $7,000 / $8,000 if 50+)
• 2025 HSA contributions (if not made through payroll)
• Q1 2026 estimated tax payment
• Filing Form 4868 for an automatic 6-month extension (extends filing deadline, NOT payment deadline)
If you cannot pay in full, file anyway to avoid the larger failure-to-file penalty. Use our
Tax Calculator to estimate what you owe.
June 16, 2026
Q2 2026 Estimated Tax Payment Due — Second quarter estimated payment for self-employed individuals, freelancers, and anyone with income not subject to withholding. Also the automatic filing extension deadline for US citizens and resident aliens living abroad.
Quarterly Tax Calculator September 15, 2026
Q3 2026 Estimated Tax Payment Due — Third quarter estimated payment. Also the deadline for S-corporation and partnership returns (Forms 1120-S and 1065) that received an extension.
October 15, 2026
Extended Filing Deadline — If you filed Form 4868 for an extension, your 2025 tax return is due today. No further extensions are available. Remember: you should have paid your estimated tax owed by April 15 to avoid interest and penalties on the unpaid balance.
January 15, 2027
Q4 2026 Estimated Tax Payment Due — Fourth quarter estimated payment for tax year 2026. You can skip this payment if you file your 2026 return and pay the full balance by February 1, 2027.
State-Specific Deadline Differences
While most states follow the federal April 15 filing deadline, some have different dates. Notable exceptions for 2026:
| State | Filing Deadline | Notes |
|---|
| Virginia | May 1, 2026 | Virginia gives residents an extra two weeks beyond the federal deadline |
| Louisiana | May 15, 2026 | Extended deadline due to frequent natural disaster declarations |
| Iowa | April 30, 2026 | Iowa's deadline is typically April 30 |
| Delaware | April 30, 2026 | Delaware provides two extra weeks |
| Hawaii | April 20, 2026 | Hawaii's deadline is a few days after the federal date |
States with no income tax (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming) have no state filing deadline. Always verify your state's specific deadline with your state tax authority.
What Happens If You Miss a Deadline?
Filing Penalties
The failure-to-file penalty is 5% of the unpaid tax for each month (or partial month) your return is late, up to a maximum of 25%. If your return is over 60 days late, the minimum penalty is the lesser of $485 or 100% of the unpaid tax.
The failure-to-pay penalty is 0.5% of the unpaid tax per month, up to 25%. If both penalties apply, the failure-to-file penalty is reduced by the failure-to-pay amount.
Important: If you cannot afford to pay, file your return anyway. The filing penalty is 10x higher than the payment penalty. You can set up an IRS installment plan to pay over time.
Estimated Tax Underpayment Penalty
If you did not pay enough through withholding and estimated payments, you may owe an underpayment penalty. To avoid it, pay at least:
- 90% of your current year tax liability, OR
- 100% of your prior year tax liability (110% if your prior year AGI exceeded $150,000)
The penalty is calculated like interest on the underpaid amount for the period it was underpaid, using the IRS quarterly interest rate.
Tips for Staying on Track
- Set calendar reminders for each estimated tax payment deadline
- File early to get your refund faster and reduce identity theft risk
- Use IRS Direct Pay or EFTPS to schedule payments in advance
- Save 25-30% of 1099 income in a separate account for quarterly payments
- Request an extension if you need more time, but pay your estimated tax by April 15
- Check your withholding mid-year using our Paycheck Calculator to avoid surprises
Estimate Your Quarterly Payments
Calculate how much to pay each quarter to avoid underpayment penalties.
Quarterly Tax Calculator