Where to send your estimated tax payment

You send estimated tax payments to the IRS, not to your state or employer. The IRS has three ways to receive them: online through their website, by mail, or by phone. Online is fastest and gives you immediate confirmation of receipt.

The IRS's online payment system is called IRS Direct Pay. You go to irs.gov, find the payments section, and enter your Social Security number or EIN, the tax year (2025), and the amount you want to pay. The system accepts payments from your checking or savings account at no charge. You'll get a confirmation number on screen and by email.

If you prefer to mail a check, you send it to the IRS address for your state — these vary, and the IRS website lists them by state. Write your Social Security number, tax year, and "2025 Estimated Tax" on the check. Mail it early enough to arrive by the deadline; the IRS counts the postmark date, not the arrival date.

You can also pay by phone through the IRS's automated system or by credit card through a third-party processor, though credit card payments carry a processing fee of roughly 2 to 3 percent.

Key Takeaways

  • Estimated tax payments go directly to the IRS through IRS Direct Pay (online), by mail, or by phone — not through your employer or state tax office.
  • The four quarterly deadlines for 2025 are April 15, June 16, September 15, and January 15, 2026, and you must meet each one or face penalties.
  • You calculate your payment by estimating your total 2025 income, subtracting deductions, and dividing the tax owed into four equal parts — or unequal parts if your income varies by quarter.
  • If you underpay estimated taxes, the IRS charges interest and penalties starting the day after each deadline passes, even if you owe money overall at tax time.
  • You can change your payment amount between quarters if your income changes, and you can make up a missed payment at the next deadline without losing the prior quarter's penalty relief.

The four 2025 estimated tax payment deadlines

Estimated tax payments are due four times a year, and each deadline is firm. Missing a deadline triggers penalties and interest that start accruing immediately, even if you end up with a refund when you file your return.

The 2025 deadlines are April 15, June 16, September 15, and January 15, 2026. The second and fourth deadlines fall on Mondays because the IRS shifts them when they would land on weekends or federal holidays. If you mail your payment, the postmark date is what counts — a check postmarked on the deadline date is on time even if it arrives late.

Each payment covers the income you earned during that quarter. The first quarter runs January through March, the second April through June, the third July through September, and the fourth October through December. You don't have to pay the same amount each quarter if your income is uneven — you can adjust based on what you actually earned.

How to calculate what you owe each quarter

Start by estimating your total income for 2025. Include wages, self-employment income, rental income, investment income, and any other money you'll receive. Subtract the deductions you expect to claim — the standard deduction if you take it, or itemized deductions if you do. The result is your estimated taxable income.

Use the tax tables or a calculator to find the federal income tax on that amount. Add any self-employment tax if you're self-employed (roughly 15.3 percent of your net self-employment income). Subtract any tax credits you expect to claim, such as the Earned Income Tax Credit or child tax credits. The result is your total estimated tax for the year.

Divide that total by four to get your quarterly payment — unless your income is uneven. If you earned most of your income in the first half of the year, you can pay more in the first two quarters and less in the last two. The IRS doesn't require equal payments; it requires that you pay enough each quarter to avoid penalties, which is based on your actual income that quarter.

The IRS provides Form 1040-ES, which includes worksheets to walk you through this calculation. You can download it from irs.gov or use tax software that calculates estimated payments for you.

What happens if you miss a deadline or underpay

The IRS charges two separate penalties for underpayment of estimated taxes: interest and an underpayment penalty. Interest accrues from the day after each deadline until you pay, at a rate set quarterly (currently around 8 percent per year). The underpayment penalty is separate and also accrues daily.

You can reduce or eliminate the penalty if you can show that your income was uneven during the year. For example, if you had almost no income in the fourth quarter, you can show the IRS that you paid enough based on what you actually earned by that point. This is called the annualized income method, and it requires filing Form 2210 with your tax return.

If you miss a deadline entirely, you can still make the payment at the next deadline without losing the ability to use the annualized income method. However, you will owe penalties and interest for the quarter you missed. The sooner you pay, the less interest accrues.

If you expect to owe less than $1,000 when you file your 2025 return, you don't have to make estimated payments at all — you can pay the full amount when you file. This is a common exception for people with small amounts of side income or investment gains.

Adjusting your payments if your income changes

You don't have to stick with the same payment amount all year. If your income rises or falls, you can recalculate and adjust your next payment. This is especially useful if you're self-employed or have variable income.

For example, if you estimated $50,000 in income for 2025 but by June you've only earned $20,000, you can lower your third and fourth quarter payments. Conversely, if you've earned more than expected, you can increase them. The key is to adjust based on what you've actually earned so far, not on what you originally projected.

You don't need to file any form to change your payment amount — you simply pay a different amount at the next deadline. However, if you want to claim relief from penalties for an earlier quarter, you'll need to show the IRS on Form 2210 that your income that quarter justified a lower payment.

Tracking your estimated tax payments

Keep a record of every payment you make: the date, the amount, the method (online, mail, or phone), and any confirmation number. If you pay online through IRS Direct Pay, you'll receive a confirmation number immediately — save this. If you mail a check, keep a copy of the check and the mailing receipt.

You can check the status of your payments on the IRS website using the "View Your Tax Account" tool, which shows payments the IRS has recorded against your 2025 account. This tool updates within 24 hours of an online payment and within a few weeks of a mailed payment.

When you file your 2025 tax return, the IRS will automatically credit all your estimated payments against the tax you owe. If you've overpaid, you'll receive a refund or can request that the overpayment be applied to your 2026 estimated taxes.

State estimated tax payments

Most states that have an income tax also require estimated tax payments on the same federal deadlines. Some states use the same amount as your federal payment; others calculate it separately. A few states don't require estimated payments at all, even if they have income tax.

Check your state's tax website to see whether you owe state estimated taxes and where to send them. Some states accept payments online; others require mailed checks. State payments go to your state tax office, not to the IRS.

If you live in a state with no income tax, you only owe federal estimated taxes.

Frequently Asked Questions

What if I pay estimated taxes but then get a big refund at tax time?

That's normal and not a problem. You've simply overpaid your estimated taxes. When you file your return, the IRS will refund the overpayment or let you apply it to your 2026 estimated taxes. There's no penalty for overpaying.

Can I make estimated tax payments for a spouse or business partner?

No. Each person with tax liability must make their own estimated payments using their own Social Security number or EIN. If you're married filing jointly, you each make separate payments, though you can file one joint return at the end of the year.

What if I can't afford to pay the full amount by the deadline?

Pay what you can by the deadline. The IRS will charge interest and penalties on the unpaid amount, but paying something is better than paying nothing. You can also set up a payment plan after you file your return to pay any remaining balance.

Do I need to make estimated tax payments if I'm retired?

Only if you have income beyond Social Security — such as rental income, investment gains, or self-employment income. Social Security itself doesn't require estimated payments. If you're unsure, use Form 1040-ES to calculate whether you'll owe more than $1,000 in tax.

Can I pay estimated taxes through my bank or tax software?

Some tax software platforms offer a payment feature that routes to the IRS, and some banks allow you to pay the IRS through their bill-pay system. These are convenient, but verify that the payment actually reaches the IRS and get a confirmation number. Paying directly through IRS Direct Pay is the most straightforward method.