Mail your payment to the IRS address that matches your tax form and location
The IRS mailing address for tax payments depends on which form you filed and which state you live in. The IRS publishes a specific list of addresses for each situation — using the wrong address delays processing and can create confusion about whether your payment arrived. The correct address appears in the instructions that came with your tax form, and also on the IRS website under "Where to File" for your particular return type.
Do not mail payments to an IRS office building you can visit in person. The IRS processes mailed payments at centralized lockbox facilities, not at local offices. Sending a check to a local IRS office will delay it by weeks while it gets redirected to the correct lockbox.
If you are unsure which address to use, call the IRS at 1-800-829-1040 before you mail the payment. They can confirm the correct lockbox address for your situation in a few minutes.
Key Takeaways
- The correct mailing address for your tax payment is printed in the instructions that came with your tax form, not on the form itself.
- IRS payments go to lockbox facilities by state and form type, not to local IRS office buildings.
- Using the wrong address delays processing but does not prevent the IRS from receiving your payment if it includes your name, address, and tax ID.
- The IRS website lists all current mailing addresses under "Where to File" organized by form type and state.
- If you mail a payment and are unsure whether it arrived, you can check the status by calling 1-800-829-1040 after two weeks.
How to find the correct mailing address for your form
The IRS publishes different mailing addresses for different tax forms and different states. Form 1040 (individual income tax) has one set of addresses. Form 1120 (corporate tax) has another. Form 1065 (partnership tax) has a third. Within each form type, the address often varies by state.
The fastest way to find your address is to look at the instructions for the form you filed. The "Where to File" section lists the mailing address for payments. If you no longer have the instructions, go to IRS.gov and search for your form number plus "where to file" — for example, "Form 1040 where to file". The IRS website shows the current addresses and updates them if a lockbox location changes.
Write the address exactly as the IRS lists it, including the ZIP code. The lockbox facilities use automated sorting equipment that reads addresses, and a misspelled street name or missing ZIP code can cause delays.
What information to include with your mailed payment
Write a check or money order payable to "United States Treasury." Do not write "IRS" on the check — the Treasury Department receives the payment first, then routes it to the IRS.
On the memo line of the check, write your tax ID (Social Security number or employer identification number), the tax year, and the form type. For example: "123-45-6789 2023 Form 1040" or "12-3456789 2023 Form 1120-S". This information helps the IRS match the payment to your return if there is any delay or if your return and payment arrive separately.
Include a payment voucher if one came with your tax package. For Form 1040, use Form 1040-V. For other forms, check the instructions to see if a voucher is required. The voucher gives the IRS another way to match your payment to your account. If you do not have a voucher, the check memo line is sufficient.
Mail the check and voucher (if applicable) in an envelope with your return, or mail them separately to the same lockbox address. Either way works, but mailing them together reduces the chance they get separated.
Timing and what to expect after you mail
Mail your payment so it arrives before the tax deadline. The IRS considers a payment on time if it is postmarked by the deadline date, not if it arrives by that date. A check postmarked April 15 but arriving April 20 is still on time. However, mail can take five to seven business days, so mail your payment at least one week before the deadline to be safe.
After you mail the payment, the IRS usually processes it within two to three weeks. During that time, your account may show the payment as pending. You can check the status by logging into your IRS account on IRS.gov or by calling 1-800-829-1040 after two weeks.
If you need to know immediately whether your payment was received, do not mail it. Use IRS Direct Pay (free, online, no account needed) or the Electronic Federal Tax Payment System (EFTPS). Both process instantly and give you a confirmation number the same day.
What to do if you are unsure about the address
If you cannot find the correct address or you are not sure which form you filed, call the IRS at 1-800-829-1040. Have your tax ID and the form number ready. The IRS can confirm the correct lockbox address in a few minutes and answer questions about whether your payment should go with your return or separately.
Do not guess at the address or use an address from a previous year. Lockbox locations change, and using an old address can delay processing. The IRS website and the form instructions always have the current address.
Mailing addresses for the most common forms
The IRS publishes a complete list of addresses on its website, but here is how to find the address for the forms most people file:
| Form Type | Where to Find the Address |
|---|---|
| Form 1040 (individual income tax) | Form 1040 instructions, page 2, under "Where to File" |
| Form 1040-SR (individual income tax, age 65+) | Form 1040-SR instructions, page 2, under "Where to File" |
| Form 1120 (corporate income tax) | Form 1120 instructions, under "Where to File" |
| Form 1120-S (S corporation income tax) | Form 1120-S instructions, under "Where to File" |
| Form 1065 (partnership income tax) | Form 1065 instructions, under "Where to File" |
Each address is organized by state. The IRS website also has a searchable tool: go to IRS.gov, search "where to file," and select your form type and state.
Frequently Asked Questions
Can I mail my payment to a local IRS office instead of the lockbox address?
No. Local IRS offices do not process mailed payments. If you send a check to a local office, it will be forwarded to the correct lockbox, which adds two to three weeks to processing time. Always use the lockbox address listed in your form instructions or on the IRS website.
What if I mail my payment and it gets lost?
The IRS tracks mailed payments. If your check does not arrive within three weeks, call 1-800-829-1040 with your check number and amount. The IRS can search for it and, if it is truly lost, you can stop payment on the check and mail a new one or pay online. Keep a copy of the front and back of your check for your records.
Do I need to mail a payment voucher with my check?
For Form 1040, use Form 1040-V if you are mailing a payment separately from your return. If you are mailing the payment with your return, the voucher is helpful but not required — the check memo line with your tax ID is sufficient. For other forms, check the instructions to see if a voucher is required.
Is mailing a check safer than paying online?
Both are safe, but online payment is faster and gives you a confirmation number immediately. Mailed checks take two to three weeks to process and require you to wait to confirm receipt. If you need proof of payment right away, use IRS Direct Pay or EFTPS instead of mailing.
What if my mailed payment arrives after the tax deadline?
If the check is postmarked by the deadline, the IRS considers it on time even if it arrives late. If it arrives without a postmark or is postmarked after the deadline, the IRS may assess a late payment penalty. The penalty is usually small (0.5% per month of the unpaid tax), but you can dispute it if you can show the check was mailed on time.