2026 Tax Deadlines
Key dates for filing your 2025 return, requesting extensions, making estimated payments, and contributing to retirement accounts.
2026 Tax Calendar
This is a fixed 2026 federal calendar, not a live countdown. Confirm a deadline with the IRS before filing or paying.
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Q4 2025 Estimated Tax
Fourth quarter estimated tax payment for self-employed and those with insufficient withholding.
January 15, 2026
2025 Tax Return Due
Deadline to file your 2025 federal income tax return or request a 6-month extension.
April 15, 2026
IRA / HSA Contribution Deadline
Last day to make IRA and HSA contributions that count toward the 2025 tax year.
April 15, 2026
Q1 2026 Estimated Tax
First quarter estimated tax payment for the 2026 tax year.
April 15, 2026
Q2 2026 Estimated Tax
Second quarter estimated tax payment for the 2026 tax year.
June 15, 2026
Q3 2026 Estimated Tax
Third quarter estimated tax payment for the 2026 tax year.
September 15, 2026
Extended Return Deadline
If you filed an extension, this is the final deadline to submit your 2025 tax return.
October 15, 2026
Q4 2026 Estimated Tax
Fourth quarter estimated tax payment for the 2026 tax year.
January 15, 2027
Understanding Estimated Tax Payments
If you're self-employed, a freelancer, or receive income without tax withholding, you may need to make quarterly estimated tax payments to avoid penalties.
The IRS expects you to pay at least 90% of your current-year tax liability or 100% of your prior-year liability (110% if AGI exceeds $150,000) through withholding and estimated payments.
Frequently Asked Questions
When is the federal tax filing deadline for 2026?
The federal income tax filing deadline for the 2025 tax year is April 15, 2026. If April 15 falls on a weekend or holiday, the deadline shifts to the next business day. This applies to individual returns (Form 1040).
What happens if I miss the tax deadline?
If you miss the April 15 deadline without filing an extension, the IRS charges a failure-to-file penalty of 5% of unpaid taxes per month (up to 25%). A separate failure-to-pay penalty of 0.5% per month also applies if you owe taxes. Filing on time, even if you can't pay, significantly reduces penalties.
When are estimated tax payments due?
Quarterly estimated tax payments for 2026 are due on April 15, June 16, September 15, and January 15, 2027. These apply to self-employed individuals, freelancers, and others who don't have taxes withheld from their income.
Can I get a filing extension?
Yes. Filing Form 4868 by April 15, 2026 gives you an automatic 6-month extension to October 15, 2026. Important: this extends the time to file, not the time to pay. Any taxes owed are still due by April 15 to avoid interest and penalties.
Is there a penalty for filing late vs paying late?
Yes, both carry separate penalties, but the failure-to-file penalty (5%/month) is 10 times larger than the failure-to-pay penalty (0.5%/month). If you can't pay in full, file on time anyway and pay as much as possible to minimize total penalties and interest.
Related Resources
Federal tax calculator
Estimate your federal tax bill by income and filing status.
Deductions & credits
Standard deductions, retirement limits, EITC, and Child Tax Credit.
Federal tax statistics
Corpus-wide findings and downloadable bracket tables from IRS Revenue Procedures.
Quarterly estimated taxes guide
Who pays, when payments are due, and how the IRS calculates underpayment penalties.
Interactive tax tools
Marginal rate lookup, bracket comparison, and EITC eligibility checker.
2026 tax brackets
All 7 marginal rates for every filing status.