The Form 1040-V is a slip of paper that tells the IRS which tax return your check or money order payment belongs to

Form 1040-V is a payment voucher — a one-page form the IRS prints and mails to you when you owe federal income tax and want to pay by check or money order instead of electronically. It is not a bill. It is a routing slip. When you send a payment by mail, you tear off the voucher, include it with your check, and mail both to the IRS address printed on the form. The voucher tells the IRS your name, Social Security number, tax year, and the amount you owe, so the payment reaches the right account.

You receive Form 1040-V only if you file your tax return on paper and indicate on the return that you will pay by check or money order. If you file electronically and choose a payment method at filing time, you do not get a voucher — the IRS processes your payment through their electronic system instead. The voucher exists because paper filers need a way to connect their mailed payment to their tax account without an electronic link.

Key Takeaways

  • Form 1040-V comes with your tax return documents only if you file on paper and select check or money order as your payment method.
  • The voucher must be mailed with your check or money order to ensure the IRS credits the payment to your correct tax year and account.
  • You cannot use Form 1040-V if you file electronically; electronic filers pay through the IRS payment portal or their tax software at the time of filing.
  • The voucher includes your name, SSN, tax year, and amount owed — do not send it alone without a payment, and do not alter the printed information.
  • Mailing your payment with the voucher typically takes two to three weeks to post to your account, so send it early if you owe tax by the filing deadline.

When the IRS sends you Form 1040-V

The IRS prints and includes Form 1040-V in the tax return package it mails to you if you request a paper return by mail or download one from IRS.gov. The form appears in the package only if your return shows a balance due — money you owe the IRS. If you are owed a refund or owe nothing, no voucher is included because there is no payment to make.

The voucher is pre-printed with your name, address, Social Security number, and tax year. It is not blank. You do not fill it out yourself. Your only job is to detach it from the package, write your check or money order for the amount shown on your return, and mail both together to the address printed on the voucher itself.

How to use Form 1040-V when you mail a payment

Detach the voucher from your tax return package. Write a check or money order for the full amount of tax you owe, made payable to "United States Treasury." Do not make it payable to the IRS. On the back of the check or money order, write your Social Security number and the tax year (for example, "2024" or "1040-2024").

Place the voucher and your payment together in an envelope. The voucher goes on top. Mail the envelope to the address printed on the voucher — this address changes by year and by region, so use the one on your specific form, not an address you find online. Do not mail the voucher without a payment, and do not mail a payment without the voucher. The voucher is what connects your payment to your account.

Keep a copy of the voucher and a record of your check number or money order receipt. The IRS does not send a confirmation when your payment arrives. Tracking your mailed payment takes longer than electronic payments — allow two to three weeks for the payment to post to your account after you mail it.

Why Form 1040-V exists when electronic payment is faster

Paper filers do not have access to the IRS's electronic payment systems in real time. When you file on paper, your return is processed by hand or scanned into the system, which takes weeks. By the time the IRS has your return in their computer, the filing deadline may have passed. Form 1040-V solves this by letting you mail a payment that the IRS can match to your account even before your paper return is fully processed.

The voucher also prevents payment errors. Without it, the IRS would have to guess which tax year and which taxpayer a mailed check belongs to if the check arrived before the return was entered into the system. Thousands of paper filers mail payments every year, and the voucher is the only way to keep those payments from being misapplied or held in suspense.

What happens if you lose or do not receive Form 1040-V

If you file on paper and do not receive a voucher in the mail, you can download Form 1040-V from IRS.gov. Search for "Form 1040-V" on the IRS website, download the PDF, and print it. Fill in your name, Social Security number, address, tax year, and the amount you owe. The form has clear lines for each piece of information. Mail the completed form with your check or money order to the address shown on the form.

If you have already mailed a payment without a voucher, contact the IRS at 1-800-829-1040 to report it. Provide your name, Social Security number, the amount paid, the date you mailed it, and the check number or money order number. The IRS can search for your payment and apply it to your account, though this takes longer than if the voucher had been included.

Form 1040-V versus electronic payment options

If you file electronically, you do not use Form 1040-V. Instead, you choose a payment method when you file — usually through your tax software or a tax professional's system. Electronic options include Direct Debit (pulling money from your bank account), a credit or debit card (through a payment processor), or IRS Direct Pay (the IRS's own free payment portal). All of these are processed instantly and post to your account within one business day.

Paper filers can also pay electronically without filing on paper. You can file your return on paper, then go to IRS.gov and use IRS Direct Pay or the Electronic Federal Tax Payment System (EFTPS) to pay separately. This is faster than mailing a check with a voucher. However, if you choose to mail a payment with your paper return, Form 1040-V is required.

Common mistakes when mailing Form 1040-V

Do not alter the pre-printed information on the voucher. The IRS scans or reads the voucher to match it to your account. If you cross out or change your name, address, or Social Security number, the voucher may not scan correctly and your payment could be delayed or misapplied.

Do not mail the voucher alone. The IRS needs both the voucher and the payment together. If you mail only the voucher, it will be filed but your payment will not be credited. Similarly, do not mail a payment without the voucher. A check that arrives without a voucher is harder to match to your account and may be held in suspense while the IRS tries to figure out which return it belongs to.

Do not make your check payable to the IRS. Make it payable to "United States Treasury." Checks made out to the IRS may be rejected or delayed. Also, do not send cash. The IRS will not accept cash payments by mail.

Frequently Asked Questions

Can I pay my taxes with Form 1040-V if I file electronically?

No. If you file electronically, you pay at the time of filing through your tax software or a payment processor. You will not receive Form 1040-V. The voucher is only for paper filers who choose to mail a check or money order with their return.

What if I owe more tax after I file and send my Form 1040-V payment?

The IRS will send you a bill (Form 1040-ES or a notice) with instructions on how to pay the additional amount. You can mail another check with a new voucher if one is provided, or pay electronically through IRS Direct Pay or EFTPS. Do not send a second payment without a voucher or a bill reference number.

How long does it take for the IRS to receive and post my Form 1040-V payment?

Mailing typically takes five to seven business days. Once the IRS receives your payment, it takes another one to two weeks to post to your account. Plan for two to three weeks total. If you owe tax by the filing deadline, mail your payment at least three weeks early to avoid a late-payment penalty.

What if my check is lost in the mail?

If your payment does not post within three weeks, contact the IRS at 1-800-829-1040 with your check number, the amount, and the date you mailed it. The IRS can search for it and, if found, apply it to your account. If it is truly lost, you may need to stop payment on the original check and send a new one.

Can I use Form 1040-V to pay someone else's taxes?

No. Form 1040-V is pre-printed with a specific taxpayer's name and Social Security number. You can only use it to pay the tax owed by the person named on the form. If you want to pay someone else's tax, they must mail their own voucher with their own check.