What Form You Use to Pay Quarterly Taxes
You do not file a form to make a quarterly tax payment itself. Instead, you send money directly to the IRS using their payment system, and the IRS tracks it against your tax account. The form you will encounter is Form 1040-ES, which is the "Estimated Tax Worksheet" — it helps you calculate how much to pay each quarter, but you do not mail it to the IRS. You keep it for your records.
The actual payment happens through one of several methods: the IRS Direct Pay system (online, no fee), the Electronic Federal Tax Payment System (EFTPS, also online), a credit or debit card through an approved processor, or by check or money order mailed to an IRS lockbox. Form 1040-ES includes a payment voucher you can use if you pay by mail, but most people now pay electronically.
Quarterly payments are required if you expect to owe $1,000 or more in federal income tax for the year after subtracting withholding and credits. This typically applies to self-employed people, business owners, investors with significant income, and anyone else whose employer does not withhold enough tax from their paychecks.
Key Takeaways
- Form 1040-ES is a worksheet to calculate your quarterly payment amount, not a form you send to the IRS — you keep it yourself.
- You pay quarterly taxes directly through IRS Direct Pay, EFTPS, a credit card processor, or by mailing a check with the payment voucher from Form 1040-ES.
- Quarterly payments are due on April 15, June 15, September 15, and January 15 of the following year, though the exact date shifts if it falls on a weekend or holiday.
- You calculate your payment using Form 1040-ES by estimating your year's income, subtracting deductions, and dividing the tax owed into four equal parts.
- Missing a quarterly payment can result in underpayment penalties, even if you pay all the tax owed when you file your annual return.
How to Calculate Your Quarterly Payment Using Form 1040-ES
Form 1040-ES walks you through a worksheet in four parts. You start by estimating your total income for the year — wages, self-employment income, rental income, capital gains, and any other sources. Then you subtract deductions (the standard deduction or itemized deductions, depending on which is larger for you) and any tax credits you expect to claim. The result is your estimated taxable income.
Next, you calculate the tax on that income using the tax tables or rates provided in the form. Then you subtract any tax that will be withheld from your paychecks during the year, plus any tax credits (like the Earned Income Tax Credit). The remaining amount is what you owe in estimated tax. You divide that by four to get your quarterly payment.
Form 1040-ES is updated each year and includes the current tax rates and worksheets. You can read it from IRS.gov or request a copy by phone. The form itself contains detailed line-by-line instructions. If your income is uneven across the year — for example, you earn most of your money in the fall — you can use an alternative calculation method called the annualized installment method, also explained in the form.
When Quarterly Payments Are Due
The four quarterly payment due 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 important date moves to the next business day. The IRS website lists the exact dates each year.
The first quarter payment (for income earned January through March) is due April 15. The second quarter payment (April through May) is due June 15. The third quarter payment (June through August) is due September 15. The fourth quarter payment (September through December) is due January 15 of the next year. This means you are always paying for income you have already earned, not income you expect to earn in the future.
If you miss a due date, you can still make the payment, but you will owe an underpayment penalty calculated from the original due date. The penalty is small if you are only a few days late, but it grows the longer you wait. The IRS calculates it based on the federal short-term interest rate plus a percentage set by Congress, which changes quarterly.
How to Pay: Your Options and What Each Costs
| Payment Method | Cost | When It Posts | Best For |
|---|---|---|---|
| IRS Direct Pay (online at IRS.gov) | Free | Same day if before 8 p.m. ET | Most people; no fees, when ready confirmation |
| EFTPS (Electronic Federal Tax Payment System) | Free | Same day or next day, depending on timing | People who prefer a separate system or need to schedule payments in advance |
| Credit or debit card (through approved processor) | 2% to 3.7% fee | Same day | People who want to earn credit card rewards and can absorb the fee |
| Check or money order by mail | Free | 5 to 7 business days after mailing | People without internet access or who prefer paper records |
IRS Direct Pay is the most common choice because it is free, requires no setup, and you get when ready confirmation. You visit IRS.gov/payments, enter your Social Security number or employer ID, the tax year, the amount, and your bank account information. The payment posts the same day if you submit it before 8 p.m. Eastern Time.
EFTPS is a separate system run by the Treasury Department. You enroll once (which takes a few days), then you can schedule payments up to 120 days in advance. This is useful if you want to automate your quarterly payments or if you prefer not to enter your bank details on the IRS website each time.
If you pay by check or money order, write your Social Security number, the tax year, and "2024 Form 1040-ES" on the check. Use the payment voucher that comes with Form 1040-ES and mail it to the IRS lockbox address listed on the form — the address varies by state. Mail early enough that the check arrives by the due date; the IRS does not accept postmarks as proof of timely payment.
What Happens If You Underpay or Overpay
If you pay less than you owe in quarterly payments, the IRS will calculate an underpayment penalty when you file your annual return. The penalty is based on how much you underpaid, how long you underpaid it, and the federal interest rate for that quarter. You cannot avoid the penalty by paying the full amount owed when you file your return — the penalty is separate from the tax itself. However, the penalty is usually small (often under $100 for modest underpayments) and is deductible on your next year's return if you itemize deductions.
If you overpay in quarterly payments, you have two choices when you file your annual return: you can request a refund, or you can explore the overpayment to next year's estimated tax. explore it to next year reduces the amount you need to pay in the next round of quarterly payments. Many people choose this option to avoid waiting for a refund check.
If your income changes significantly during the year, you can recalculate your quarterly payment and adjust the remaining quarters. For example, if you earn much less than expected by September, you can reduce your fourth quarter payment. You do this by recalculating using Form 1040-ES with your updated income estimate.
Who Must Pay Quarterly Taxes
You must pay quarterly estimated taxes if you expect to owe $1,000 or more in federal income tax after subtracting withholding and credits. This applies to self-employed people, business owners, investors, and anyone with income not subject to withholding. It also applies to employees whose employer does not withhold enough tax from their paychecks — for example, if you have a second job or significant side income.
You do not need to pay quarterly taxes if your only income is from an employer and your withholding is correct, or if you expect to owe less than $1,000 in tax for the year. You also do not need to pay if you had no tax liability the previous year and are a U.S. citizen or resident alien.
If you are unsure whether you need to pay, Form 1040-ES includes a worksheet to help you decide. You can also work with a tax professional or use tax software that estimates your liability based on your income so far in the year.
Common Mistakes to Avoid
The most common mistake is mailing Form 1040-ES to the IRS. The form is for your records only — sending it does not make a payment. Your payment must go through one of the methods listed above (Direct Pay, EFTPS, credit card, or check with the payment voucher).
Another mistake is using the wrong payment voucher or lockbox address. If you pay by mail, the address on the voucher in your Form 1040-ES is specific to your state. Using the wrong address delays processing and can cause the payment to post late, triggering a penalty.
A third mistake is calculating quarterly payments as equal amounts when your income is uneven. If you earn most of your income in the fall, you can use the annualized installment method in Form 1040-ES to pay less in the early quarters and more later. This avoids overpaying and then waiting for a refund.
Finally, some people forget to update their quarterly payment if their income changes. If you have a major change — a job loss, a large bonus, or a significant business downturn — recalculate using Form 1040-ES and adjust your remaining quarterly payments. The IRS will not penalize you if you pay based on your actual income, even if it differs from your original estimate.
Frequently Asked Questions
Do I need to file Form 1040-ES with the IRS?
No. Form 1040-ES is a worksheet you use to calculate your payment and keep for your records. You send only the payment itself to the IRS, not the form. If you pay by mail, you include the payment voucher (the bottom part of Form 1040-ES) with your check, but the form itself stays with you.
What if I pay quarterly taxes but still owe money when I file my return?
You will owe the remaining balance when you file. Your quarterly payments are credited against your total tax liability. If you underpaid in the quarterly payments, you pay the difference with your return. If you overpaid, you can request a refund or explore the overpayment to next year's estimated taxes.
Can I change my quarterly payment amount mid-year?
Yes. If your income changes significantly, you can recalculate using Form 1040-ES and adjust your remaining quarterly payments. For example, if you lose a client in August, you can reduce your September and January payments based on your updated income estimate. There is no penalty for changing your estimate as long as you pay based on your actual income.
What if I miss a quarterly payment important date?
You can still make the payment, but you will owe an underpayment penalty calculated from the original due date. The penalty is based on the amount underpaid, how long it was underpaid, and the federal interest rate. The penalty is usually small for a few days late but grows if you wait longer. Pay as soon as you realize you missed the important date.
Is there a penalty if I overpay my quarterly taxes?
No. If you overpay, you can request a refund or explore the overpayment to next year's estimated taxes. There is no penalty for overpaying. Many people choose to explore the overpayment to the next year to reduce their next round of quarterly payments.