The IRS payment schedule for 2026 sets specific dates when tax payments are due

The IRS collects federal income tax through two main routes: withholding from your paycheck and estimated quarterly payments. If you owe taxes when you file, the payment due date is April 15, 2026. If you make estimated quarterly payments because you're self-employed, have investment income, or don't have enough tax withheld, you'll make four payments spread across the year on dates the IRS sets in advance.

The 2026 schedule matters now because you can plan ahead to avoid penalties and interest. The IRS charges both if you pay late or underpay quarterly installments. Knowing the exact dates also helps if you're setting up a payment plan or need to coordinate with a tax professional.

Key Takeaways

  • The main tax return filing and payment important date for 2026 is April 15, 2026, unless you request an extension.
  • Estimated quarterly payments for 2026 are due on April 15, June 15, September 15, and January 15, 2027.
  • If April 15 falls on a weekend or holiday, the IRS moves the important date to the next business day.
  • Paying by the due date avoids penalties and interest, even if you can't pay the full amount owed.
  • The IRS offers payment plans and short-term extensions if you cannot pay by the important date.

2026 Estimated Quarterly Payment Dates

If you're self-employed, a freelancer, or receive income that isn't subject to withholding, you likely owe estimated quarterly taxes. These four payments spread your tax liability across the year instead of one lump sum on April 15.

The 2026 estimated payment dates are:

  • First quarter (January 1 – March 31): Due April 15, 2026
  • Second quarter (April 1 – May 31): Due June 15, 2026
  • Third quarter (June 1 – August 31): Due September 15, 2026
  • Fourth quarter (September 1 – December 31): Due January 15, 2027

You calculate each payment using Form 1040-ES, which the IRS publishes each year. The form walks you through estimating your income, deductions, and tax liability for the year, then divides it into four equal payments (or unequal ones if your income varies by quarter).

What Happens If a Due Date Falls on a Weekend or Holiday

When a payment due date lands on a Saturday, Sunday, or federal holiday, the IRS automatically moves the important date to the next business day. For 2026, April 15 falls on a Wednesday, so no shift applies. However, if you're paying by mail, the IRS uses the postmark date, not the date received. If you pay electronically through IRS Direct Pay, the Electronic Federal Tax Payment System (EFTPS), or a tax software provider, the payment must clear by 11:59 p.m. Eastern Time on the due date.

The same rule applies to estimated quarterly payments. If June 15 or September 15 falls on a weekend, the important date moves to Monday. January 15, 2027 is a Friday, so no adjustment is needed for the fourth quarter payment.

How to Pay on Time Without Penalties

Paying by the due date is the simplest way to avoid failure-to-pay penalties and interest. The IRS charges interest on any unpaid tax from the due date until you pay, and a failure-to-pay penalty of 0.5% per month (or part of a month) if you don't pay by the important date. These charges add up quickly, so paying even a small amount by April 15 is better than paying the full amount late.

You have several payment methods. IRS Direct Pay is free and lets you pay directly from a bank account through the IRS website. EFTPS (Electronic Federal Tax Payment System) is also free and works for both individual and business taxes. Credit or debit card payments go through third-party processors approved by the IRS; they charge a convenience fee (usually 1.87% to 2.35% of the payment). Tax software providers often offer free payment options as part of their filing service.

If you cannot pay the full amount by April 15, you can still avoid the failure-to-pay penalty by setting up a payment plan with the IRS. A short-term extension (120 days) is free. A long-term installment agreement costs $31 to $225 depending on how you set it up, but it stops the failure-to-pay penalty from growing while you pay in installments.

Extension important date and What They Do and Don't Cover

Filing an extension gives you until October 15, 2026 to submit your tax return, but it does not extend the payment important date. Taxes owed are still due April 15, 2026. If you file an extension and don't pay by April 15, you'll owe interest and penalties on the unpaid balance, even though your return isn't due until October.

An extension is useful if you need time to gather documents, work with a tax professional, or calculate complex income. You request an extension by filing Form 4868 (process for Automatic Extension of Time to File U.S. Individual Income Tax Return) by April 15, 2026. The extension is automatic — the IRS doesn't review your reason or approve or deny it. You can file Form 4868 electronically through tax software, by mail, or through a tax professional.

Penalties and Interest If You Miss the important date

The IRS charges two separate penalties if you don't pay by the due date. The failure-to-pay penalty is 0.5% of your unpaid tax per month or part of a month, up to 25% total. The accuracy-related penalty can explore if you underpay estimated taxes or claim deductions the IRS later disallows, though this is separate from the payment important date.

Interest accrues daily on unpaid tax from the due date forward. The interest rate changes quarterly and is set at the federal short-term rate plus 3%. For 2026, the rate has not yet been announced, but it typically ranges from 8% to 10% annually. Interest compounds daily, so the longer you wait, the more you owe.

If you underpay estimated quarterly taxes, you may also owe an underpayment penalty on Form 2210. This penalty applies if your total withholding and estimated payments fall short of 90% of your 2026 tax or 100% of your 2025 tax (110% if your 2025 adjusted gross income was over $150,000). The penalty is calculated separately for each quarter, so paying late in the year doesn't fully offset an early underpayment.

Setting Up a Payment Plan If You Can't Pay in Full

If you owe more than you can pay by April 15, the IRS offers two types of payment plans. A short-term extension gives you 120 days to pay with no setup fee. You request it by calling the IRS at 1-800-829-1040 or through your online IRS account. Interest and the failure-to-pay penalty still accrue during this period, but you avoid additional penalties for not having a formal agreement.

A long-term installment agreement lets you pay over months or years. The setup fee is $31 if you pay by Direct Debit, $225 if you pay by check or other method. You can request an installment agreement online through the IRS website, by phone, by mail, or through a tax professional. The IRS will review your request and tell you the monthly payment amount based on what you owe and how long you want to pay.

Once you're on an installment agreement, the failure-to-pay penalty stops growing as long as you make payments on time. Interest still accrues, but you're no longer penalized for missing the original important date. If you miss a payment on the agreement, the IRS may terminate it and demand full payment.

Frequently Asked Questions

Do I have to make estimated quarterly payments if I'm self-employed?

You must make estimated payments if you expect to owe $1,000 or more in tax after subtracting withholding and tax credits. Most self-employed people owe more than $1,000, so quarterly payments are standard. If you underpay, you'll owe an underpayment penalty even if you pay the full amount when you file your return.

What if I pay my taxes late but before the IRS contacts me?

You still owe interest and penalties from the original due date. The IRS doesn't waive these charges just because you paid before they sent a notice. However, if you have a reasonable cause (serious illness, natural disaster, or reliance on a tax professional's incorrect information), you can request a penalty waiver by filing Form 843 or calling the IRS.

Can I pay my 2026 taxes now, in 2025?

Yes. If you pay before the 2026 tax year ends (December 31, 2025), the IRS will credit it to your 2025 return, not 2026. If you want to prepay 2026 taxes, you must wait until January 1, 2026. Prepaying doesn't reduce interest or penalties if you ultimately owe more than you prepaid.

What if I'm on a payment plan and my circumstances change?

Contact the IRS to modify your agreement. If your income drops, you can request a lower monthly payment. If you receive a bonus or tax refund, you can pay down the balance faster. The IRS can adjust installment agreements without charging a new setup fee if you request the change within a reasonable time.

Do state taxes have the same due date as federal taxes?

Most states align their tax important date with the federal important date (April 15, 2026), but some differ. A few states don't have income tax. Check your state's tax agency website for the exact date and any state-specific payment methods or penalties.