When Estimated Tax Payments Are Due and How to Calculate Them

Estimated tax payments are due four times a year if you owe taxes that won't be covered by withholding

If you're self-employed, have investment income, or don't have an employer withholding taxes from your paycheck, the IRS expects you to send in tax payments on a schedule throughout the year rather than waiting until April. These are called estimated tax payments, and they're due on specific dates set by the IRS. Missing a deadline can result in penalties and interest, even if you end up overpaying for the year.

The four payment deadlines fall roughly every three months, aligned with calendar quarters. The exact dates shift slightly year to year because the IRS adjusts them when they fall on weekends or holidays. You can pay by mail, online through IRS Direct Pay, or through an electronic federal tax payment system (EFTPS). The IRS does not require you to use a tax professional or third-party service to make these payments.

Key Takeaways

• Estimated tax payments are due on April 15, June 15, September 15, and January 15 of the following year, though the exact dates shift if they fall on a weekend or holiday.
• You owe estimated taxes if you expect to owe $1,000 or more in federal income tax after accounting for withholding and credits, though the threshold varies based on your filing status.
• Calculate your payment by estimating your total tax for the year, subtracting what will be withheld or credited, and dividing by four — or use Form 1040-ES to walk through the calculation.
• Paying late triggers a penalty on the unpaid amount, calculated from the due date to the payment date, even if you ultimately get a refund when you file your return.
• You can adjust your payment amounts between quarters if your income changes, and you can request a waiver of penalties if you had no tax liability the prior year or meet other hardship conditions.

The four payment dates and what happens if they fall on a weekend

The standard estimated tax payment deadlines are April 15, June 15, September 15, and January 15. When any of these dates falls on a Saturday or Sunday, the deadline moves to the following Monday. If the date falls on a federal holiday, the deadline moves to the next business day that is not a holiday. The IRS publishes the exact dates each year on its website and in Form 1040-ES.

For the 2024 tax year, the deadlines were April 15, June 17 (moved from June 15 because June 15 was a Saturday), September 16 (moved from September 15 because September 15 was a Sunday), and January 15, 2025. The 2025 tax year deadlines are April 15, June 16, September 15, and January 15, 2026. If you miss a deadline, you can still make the payment, but the IRS will calculate a penalty based on how late the payment was.

Who has to make estimated tax payments

You owe estimated taxes if you expect to owe at least $1,000 in federal income tax for the year after subtracting any withholding from a job and any tax credits you plan to claim. The threshold is $500 if you are married filing separately. This applies to self-employed people, freelancers, gig workers, investors, retirees taking distributions, and anyone else with income that is not subject to employer withholding.

If you had no tax liability in the prior year and you are a U.S. citizen or resident alien, you do not owe estimated taxes for the current year even if you expect to owe taxes now. This exception is sometimes called the "safe harbor" rule. However, if you had tax liability in the prior year, you cannot use this exception. The IRS does not send notices telling you that you owe estimated taxes — it is your responsibility to calculate whether you meet the threshold.

How to calculate your estimated tax payment

Start by estimating your total income for the year from all sources: wages, self-employment, rental income, investment gains, retirement distributions, or anything else taxable. Then estimate your deductions and credits. The simplest method is to use Form 1040-ES, which the IRS provides free. It walks you through a worksheet that accounts for your filing status, expected income, deductions, and credits, and produces a total estimated tax for the year.

Once you have your total estimated tax, subtract any tax that will be withheld from paychecks or other income during the year. Also subtract any tax credits you expect to claim, such as the Earned Income Tax Credit or the Child Tax Credit. The remaining amount is what you owe in estimated taxes. Divide that by four to get your quarterly payment amount. You can pay the same amount each quarter, or you can pay different amounts if your income is uneven across quarters.

If you underpay in one quarter and overpay in another, the IRS will still calculate a penalty on the underpayment for that quarter. To avoid penalties entirely, you can use the "annualized income" method, which allows you to pay more in quarters when your income is higher and less in quarters when it is lower. Form 1040-ES includes a worksheet for this method as well.

How to pay your estimated taxes

You have three main options for paying: online through IRS Direct Pay, by mail using a check or money order, or through the Electronic Federal Tax Payment System (EFTPS). IRS Direct Pay is free and the fastest — you can schedule a payment to be deducted from your bank account on the date you choose, and you receive a confirmation number immediately. You do not need to create an account or provide credit card information.

If you pay by mail, send a check or money order with a payment voucher. The voucher is part of Form 1040-ES. Write your Social Security number or Employer Identification Number on the check, and mail it to the address listed in the form instructions for your state. Mail payments take longer to process, so send yours well before the deadline to avoid a late-payment penalty.

EFTPS is a free system run by the U.S. Department of the Treasury. You can enroll online or by phone, and then schedule payments through their website or automated phone line. EFTPS requires you to set up an account and plan ahead — you must schedule payments at least one business day before the due date. If you use a tax professional or accounting software, they may offer to pay on your behalf, but you remain responsible for ensuring the payment is made on time.

Penalties and interest for late or missed payments

If you pay an estimated tax installment late, the IRS charges a penalty on the unpaid amount from the due date until the payment date. The penalty rate changes quarterly and is based on the federal short-term interest rate plus 3 percent. For 2024, the rate was 8 percent per year. The penalty accrues daily, so even a payment that is a few days late will incur a small penalty.

You also owe interest on any tax you underpay for the year, calculated from the due date of each installment to the date you pay or file your return, whichever is earlier. Interest is separate from the penalty. If you overpay in one quarter and underpay in another, the IRS does not automatically apply the overpayment to reduce the underpayment penalty — you have to request that adjustment when you file your return.

The IRS may waive the penalty if you had no tax liability in the prior year, or if you had reasonable cause for the underpayment — for example, a sudden job loss or medical emergency. You must request a waiver by filing Form 2210 with your tax return or by contacting the IRS directly. Simply paying late does not automatically trigger a waiver.

Adjusting your payments if your income changes

You do not have to pay the same amount every quarter. If your income drops or rises significantly, you can recalculate your estimated tax and adjust your remaining payments. For example, if you had a large income in the first quarter but expect little income in the remaining quarters, you can pay more in the first quarter and less in the later ones.

To adjust, recalculate your total estimated tax for the year using the same method as before — Form 1040-ES or the annualized income method — and divide the remaining tax by the number of quarters left. This new amount becomes your payment for the next quarter. You can make this adjustment as many times as you need throughout the year. Adjusting your payments can help you avoid overpaying and having to wait for a refund, or underpaying and owing a penalty.

Frequently Asked Questions

What if I miss a payment deadline?

You can still make the payment after the deadline, but the IRS will calculate a penalty on the unpaid amount from the due date to the payment date. The penalty is typically small for a few days late but grows if the payment is weeks or months overdue. Pay as soon as you realize you missed the deadline to minimize the penalty.

Can I pay all four quarters at once instead of spreading them out?

Yes, you can pay your entire estimated tax in one lump sum, but you must do so by the first deadline (April 15). If you pay after April 15, the IRS will treat the payment as late for the earlier quarters and assess penalties on those amounts. Paying all at once before April 15 avoids this problem.

Do I need to make estimated tax payments if I have a job and also freelance?

Only if your total expected tax liability for the year, after accounting for withholding from your job, is at least $1,000. If your job withholding covers most of your tax bill and your freelance income is small, you may not owe estimated taxes. Use Form 1040-ES to calculate your total liability and see whether you cross the threshold.

What happens if I overpay my estimated taxes?

You will receive a refund when you file your tax return, or you can request that the overpayment be applied to your next year's estimated taxes. There is no penalty for overpaying. If you consistently overpay, you can adjust your quarterly payments downward to keep more cash on hand during the year.

Can I use a payment plan instead of making estimated tax payments?

A payment plan applies after you file your return and owe taxes. Estimated tax payments are separate — they are meant to cover your tax liability as you earn income throughout the year. If you cannot afford to pay estimated taxes on time, you can still make the payment late and pay the penalty, or you can request a penalty waiver if you have reasonable cause.