When You Owe the IRS Estimated Tax Payments and How to Send Them
The Four Dates You Need to Mark on Your Calendar
If you're self-employed, a freelancer, a gig worker, or you have income the IRS doesn't automatically withhold from, you owe estimated tax payments four times a year. These are not optional—they're how you pay income tax and self-employment tax throughout the year instead of in one lump sum on April 15. The IRS sets the same four due dates for everyone, and missing them can trigger penalties and interest.
The four payment dates are: April 15, June 15, September 15, and January 15 of the following year. If any of these dates falls on a weekend or federal holiday, the deadline moves to the next business day. The payment covers the income you earned during a three-month period called a quarter, but the quarters don't line up with the calendar—they're staggered so you're always paying for income you've already received.
You don't have to make all four payments if your income is uneven. If you earn nothing in a quarter, you don't owe a payment for that quarter. But if you skip a payment you actually owe, the IRS will charge you a penalty on top of the tax itself, even if you pay everything by April 15 the following year.
Key Takeaways
- Estimated tax payments are due April 15, June 15, September 15, and January 15, with the deadline moving to the next business day if it falls on a weekend or holiday.
- Each payment covers income from a three-month period, and you calculate how much you owe based on your expected income for the year.
- You can pay online through IRS Direct Pay, by mail with Form 1040-ES, or through an electronic federal tax payment system (EFTPS).
- Missing a payment triggers a penalty even if you pay all the tax by April 15 the following year, so it's better to pay something than nothing.
- You can adjust your payments if your income changes mid-year, and you can claim overpayment as a credit on your tax return.
How Much You Owe Each Quarter
The amount you pay each quarter depends on your expected income for the full year. The IRS doesn't tell you what to pay—you calculate it yourself using Form 1040-ES, which includes a worksheet. The basic idea is simple: estimate your total income for the year, subtract deductions, multiply by your tax rate, and divide by four.
Most people use last year's tax return as a starting point. If you earned $60,000 last year and owed $12,000 in federal income tax plus self-employment tax, you'd divide that total by four and pay roughly $3,000 each quarter. But if you expect to earn more this year, you need to increase your payments. If you expect to earn less, you can pay less.
The IRS also offers a safe harbor: if you pay 100 percent of last year's total tax (or 110 percent if your adjusted gross income was over $150,000), you won't face an underpayment penalty, even if you owe more when you file. This means you can use last year's number as a floor and adjust upward if your income is clearly higher.
Three Ways to Send Your Payment
IRS Direct Pay is the fastest and most direct route. You go to irs.gov, click the payment option, enter your Social Security number or employer ID, your payment amount, and the quarter you're paying for. The payment is free and posts within one business day. You get a confirmation number immediately, which you should save for your records.
EFTPS (Electronic Federal Tax Payment System) is a separate system run by the U.S. Department of the Treasury. You enroll once, then log in to schedule payments. EFTPS requires you to schedule payments at least one business day before the due date, so it's less flexible than Direct Pay if you're paying at the last minute. There is no fee.
Paper Form 1040-ES is the old-fashioned route: you fill out the form, tear off the payment voucher, and mail it with a check or money order to the IRS address for your state. The IRS publishes the addresses in the Form 1040-ES instructions. Mail takes time, so if you're paying by mail, send it at least one week before the due date. The IRS considers the payment made on the date they receive it, not the date you mail it.
Credit card and debit card payments are possible through third-party processors, but they charge a fee (usually 1.87 to 2.35 percent of the payment). Unless you're earning rewards points that exceed the fee, Direct Pay or EFTPS is cheaper.
What Happens If You Miss a Payment
Missing an estimated tax payment triggers an underpayment penalty. The IRS calculates this penalty based on how much you underpaid, how long you underpaid it, and the current interest rate (which changes quarterly). The penalty is not huge—it's usually a few percent of the shortfall—but it stacks on top of the tax you owe, and it's avoidable.
You don't face a penalty if you pay 100 percent of last year's tax by April 15 the following year, even if you missed all four quarterly payments. But the IRS will still charge interest on the unpaid tax from the original due date. Interest accrues daily and compounds, so the longer you wait, the more you owe.
If you realize mid-year that you've underpaid, you can make a larger payment in the next quarter to catch up. You won't erase the penalty for the quarter you missed, but you'll stop the penalty from growing in future quarters. The IRS doesn't offer a way to retroactively avoid the penalty once a due date has passed.
Adjusting Your Payments If Your Income Changes
Estimated tax is based on a prediction, and predictions change. If you earn much more than you expected, you should increase your next payment. If you earn much less, you can decrease it. You don't need permission from the IRS—you just recalculate and pay the new amount.
The safest approach is to recalculate after each quarter ends. Add up what you actually earned in the first three months, project that forward to the full year, and adjust your next payment accordingly. If you're a freelancer with uneven income, this keeps you from overpaying in slow months or underpaying in busy ones.
If you overpay during the year, you have two options when you file your tax return: you can claim the overpayment as a refund, or you can apply it to next year's estimated tax. Many people apply it forward to reduce the first payment of the new year.
The Quarterly Breakdown and What Income Each Covers
The four quarters don't match the calendar year, which confuses many people. Here's how they line up:
| Payment Due Date | Income Period Covered |
|---|---|
| April 15 | January 1 – March 31 |
| June 15 | April 1 – May 31 |
| September 15 | June 1 – August 31 |
| January 15 (next year) | September 1 – December 31 |
This staggered schedule means you're always paying for income you've already earned, not income you expect to earn. That's why you can use last year's tax return as a starting point—you know what you actually made.
Who Has to Make Estimated Tax Payments
You owe estimated tax if you expect to owe $1,000 or more in federal income tax for the year after subtracting withholding and credits. This includes self-employed people, freelancers, gig workers, investors, and anyone with income that doesn't have tax withheld automatically.
If you have a W-2 job and your employer withholds taxes, you usually don't owe estimated payments—your withholding covers it. But if you have both a W-2 job and self-employment income, you may owe estimated tax on the self-employment portion. If you have investment income (capital gains, dividends, rental income), you may owe estimated tax on that too.
The IRS doesn't send you a bill or a notice telling you to pay. It's your responsibility to know whether you owe and to send the payment on time. If you're unsure, Form 1040-ES includes a worksheet to help you decide.
Frequently Asked Questions
What if the due date falls on a weekend or holiday?
The deadline automatically moves to the next business day. For example, if June 15 falls on a Saturday, your payment is due Monday, June 17. The IRS publishes a calendar each year showing which dates have been moved. You can find it on irs.gov.
Can I pay estimated taxes through my bank?
Some banks offer bill-pay services that can send a check to the IRS on your behalf, but this is slower and less reliable than Direct Pay or EFTPS. If you use your bank's bill-pay, make sure the check arrives at least one week before the due date, because the IRS dates the payment by when they receive it, not when you send it.
What if I can't pay the full amount by the due date?
Pay whatever you can. Paying something is better than paying nothing, because the penalty is calculated on the amount you underpaid. If you pay half of what you owe, the penalty applies only to the other half. You'll still owe interest on the unpaid balance, but you'll reduce the penalty.
Do I need to file a return if I only have self-employment income?
Yes. Even if you don't owe income tax, you must file a return if your net self-employment income is $400 or more, because you owe self-employment tax (Social Security and Medicare). Estimated tax payments include self-employment tax, so the calculation is based on your total tax liability, not just income tax.
Can I change my payment amount after I've sent it?
You can't recall a payment you've already made, but you can adjust your next payment. If you overpaid in one quarter, you can pay less in the next quarter, or you can claim the overpayment as a refund or credit when you file your return.