What Form 1040-ES Is and When You Need It

Form 1040-ES is the IRS worksheet and payment voucher you use to calculate and send in quarterly estimated tax payments. You need it if you expect to owe $1,000 or more in federal income tax for the year and won't have enough withheld from paychecks or other income sources to cover that amount. The form itself has four parts: a worksheet to calculate what you owe each quarter, and four payment vouchers—one for each quarter of the year.

The IRS releases a new Form 1040-ES each January with updated tax tables and worksheets that reflect the current year's tax brackets and standard deduction. You can read it free from IRS.gov, or request a printed copy by calling 1-800-TAX-FORM. The form is not something you mail back to the IRS; instead, you use the worksheet to figure out your payment amount, then use the voucher to send money to the IRS separately.

Key Takeaways

  • Form 1040-ES contains a worksheet to calculate your quarterly payment amount based on your expected income, deductions, and credits for the year.
  • You file the form by using its payment voucher to send money to the IRS by the quarterly important date—April 15, June 15, September 15, and January 15 of the following year.
  • The worksheet asks you to estimate your total income, taxable income, and tax liability, then divide that by four to find each quarter's payment.
  • If you pay online through IRS Direct Pay or EFTPS, you do not need to mail a physical voucher, but you still use the form's worksheet to calculate the amount.
  • Underpaying estimated taxes can result in penalties and interest, even if you end up owing nothing when you file your annual return.

How to Use the 1040-ES Worksheet to Calculate Your Payment

The worksheet in Form 1040-ES walks you through six lines to reach your estimated tax for the year. Start by writing down your expected total income—wages, self-employment income, rental income, investment income, or any other source. Then subtract the deductions you expect to claim: the standard deduction (or itemized deductions if you use those), business expenses if you are self-employed, and any other above-the-line deductions like educator expenses or student loan interest.

The result is your estimated taxable income. Use the 2024 tax tables included in the form to find the federal income tax on that amount. Then add any other taxes you owe, such as self-employment tax if you are self-employed. Subtract any tax credits you expect to claim—the Earned Income Tax Credit, child tax credits, or education credits. The final number is your total estimated tax for the year. Divide that by four to find your quarterly payment amount.

If your income is uneven across the year—for example, you earn most of your income in the fall—you can use the annualized installment method instead of dividing by four. This method calculates what you owe in each quarter based on the income you actually earned by that date, which can lower your payments in slow quarters. The form includes a separate worksheet for this approach, though it requires more detailed record-keeping.

The Four Quarterly Payment important date

The IRS divides the tax year into four quarters, each with its own payment important date. The first quarter covers January through March and is due April 15. The second quarter covers April through May and is due June 15. The third quarter covers June through August and is due September 15. The fourth quarter covers September through December and is due January 15 of the following year.

If a important date falls on a weekend or federal holiday, the payment is due the next business day. For example, if April 15 falls on a Saturday, your first-quarter payment is due Monday, April 17. The IRS website lists the exact important date dates each year, so check there if a important date is close to a holiday.

You do not have to make all four payments if you will not owe taxes for the full year. For example, if you are only self-employed for part of the year, you may only need to make payments for the quarters when you earned that income. However, if you skip a quarter and later owe more than expected, you may face underpayment penalties on that quarter even if your annual tax bill is correct.

How to Submit Your Payment With the Form 1040-ES Voucher

Form 1040-ES includes four detachable payment vouchers, one for each quarter. If you pay by mail, you fill in the voucher with your name, address, Social Security number, the tax year, and the payment amount. Then you mail the voucher and your check or money order to the IRS address listed on the form. The address varies by state, so use the one printed on your voucher, not a general IRS address.

Most people now pay online instead of mailing a check. The IRS offers two free online payment methods: IRS Direct Pay and EFTPS (Electronic Federal Tax Payment System). With Direct Pay, you go to IRS.gov, enter your payment information, and authorize a bank transfer directly from your account. EFTPS is a separate system run by the Treasury Department where you enroll once, then schedule payments whenever you need to. Both methods let you pay on the important date date itself, so you do not have to mail anything early.

If you use online payment, you do not mail the physical voucher. Instead, the IRS receives your payment electronically and matches it to your account using your Social Security number and the payment amount. However, you still use the Form 1040-ES worksheet to calculate how much to send. Some tax software will calculate your quarterly payment for you and let you pay directly through the software, which is another option if you use that route.

What Happens If You Underpay or Overpay Your Quarterly Taxes

If your actual tax liability for the year turns out to be higher than the total of your four quarterly payments, you owe the difference when you file your annual return. The IRS will also charge you underpayment penalties and interest on the shortfall, calculated from the original important date of each quarter. For example, if you underpaid your first-quarter payment in April, the penalty clock starts in April, not when you file your return in the following year. The penalty rate and interest rate change each quarter and are published by the IRS.

You can reduce or eliminate underpayment penalties if you can show that your income was uneven during the year or that you had a good reason for the shortfall—for instance, a job loss or unexpected medical expense. You would explain this when you file your return, and the IRS may waive the penalty. However, you still owe the interest on the unpaid taxes.

If you overpay your quarterly taxes—meaning your total payments exceed what you actually owe—you will receive a refund when you file your return. You can choose to have the refund applied to next year's taxes instead of receiving it as a check, which can reduce the amount you need to pay in the following year's quarterly payments.

Who Should Use Form 1040-ES

You need Form 1040-ES if you are self-employed, have significant investment income, receive rental income, or have other income sources that do not have taxes withheld automatically. Employees with a regular paycheck usually do not need it because their employer withholds federal income tax from each paycheck. However, if you have a side business or freelance income in addition to your job, you may need to make quarterly payments on that extra income.

You also need the form if you expect to owe more than $1,000 in federal income tax for the year after accounting for any withholding or credits. If you expect to owe less than $1,000, you can skip quarterly payments and pay the full amount when you file your return, though you will still owe any applicable penalties and interest if you underpaid during the year.

Retirees who receive distributions from retirement accounts, Social Security recipients with other income, and people living on investment income should also check whether they need to make quarterly payments. The Form 1040-ES worksheet will show you whether your expected tax liability is high enough to require them.

Keeping Records and Adjusting Your Payments

Keep a copy of each Form 1040-ES voucher you submit, along with proof of payment—a cancelled check, a bank statement showing the transfer, or a confirmation number from IRS Direct Pay or EFTPS. These records show the IRS that you made your payments on time if there is ever a question about your account. The IRS can take several weeks to post a payment to your account, so do not be alarmed if your payment does not show up when ready online.

If your income changes significantly during the year, you can recalculate your quarterly payments using a new Form 1040-ES. For example, if you lose a job in June, you can reduce your third and fourth-quarter payments based on your lower expected income for the rest of the year. This prevents you from overpaying and waiting for a refund. You do not need to file anything with the IRS to make this change—you straightforward calculate a new amount and send it with your next quarterly payment.

Frequently Asked Questions

Can I file Form 1040-ES electronically, or do I have to print it?

Form 1040-ES itself is a worksheet and voucher set, not a form you file with the IRS. You print it to use the worksheet and calculate your payment, but you do not mail the form back. If you pay online through IRS Direct Pay or EFTPS, you never need to print anything—you just use the worksheet calculations to determine your payment amount and enter it online.

What if I miss a quarterly payment important date?

Pay as soon as you realize you missed the important date. The IRS will charge you penalties and interest from the original important date date, but paying late is better than not paying at all. If the delay was caused by a disaster or other unusual circumstance, you may be able to request penalty relief when you file your return.

Do I need to make quarterly payments if I am incorporated as an S-corp or LLC?

It depends on how your business is taxed. If your business is taxed as a sole proprietorship or partnership, you use Form 1040-ES. If you are incorporated as a C-corporation, you use Form 1120-W instead. An S-corp or LLC taxed as a partnership also uses Form 1040-ES. Check with a tax professional if you are unsure which form applies to your business structure.

Can I use last year's Form 1040-ES, or do I need the current year's version?

You should use the current year's form because tax brackets, standard deductions, and tax tables change annually. Using an old form could result in calculating the wrong payment amount. The IRS releases the new form each January on IRS.gov.

What if my income is seasonal and I earn most of my money in one quarter?

You can use the annualized installment method included in Form 1040-ES, which calculates what you owe based on the income you actually earned in each quarter rather than dividing your annual tax by four. This method works well for seasonal businesses because it allows you to pay less in slow quarters and more in busy ones, matching your actual cash flow.