Where to send your tax return by mail
The address you use depends on your state and whether you are including a payment. The IRS publishes a list of mailing addresses for each state on its website at irs.gov — search for "where to file" and your state name. Do not guess at an address; using the wrong one delays processing and can trigger notices.
If you are mailing a payment with your return, some addresses differ from the address for returns without payment. The IRS website shows both. Print the correct address directly from that page or call the IRS at 1-800-829-1040 to confirm before you mail.
Use a mailing method that provides tracking and proof of delivery — certified mail with return receipt, or a carrier like UPS or FedEx. Regular first-class mail works but leaves no record if the return goes missing.
Key Takeaways
- The correct mailing address depends on your state and whether you are sending a payment, and the IRS lists both on irs.gov under "where to file."
- Mail your return using certified mail or a tracked carrier so you have proof the IRS received it.
- The IRS processes mailed returns more slowly than e-filed returns — expect four to six weeks instead of two to three weeks.
- Include your Social Security number or ITIN on the return itself, and keep a copy for your records before you mail.
- If you are mailing a payment, write your Social Security number and tax year on the check or money order.
What to include with your mailed return
Your return must include the original signed Form 1040 (or the form your situation requires), all schedules and attachments, and a copy of any documents the IRS asks for — W-2s, 1099s, receipts for deductions, and so on. Do not mail original documents unless the IRS specifically requests them in writing. Make copies instead.
If you are sending a payment, include a check or money order made out to "United States Treasury." Write your Social Security number, the tax year, and "1040" on the front of the check. Do not send cash.
Do not staple or paperclip pages together. Stack them in order, with Form 1040 on top, and use a rubber band or envelope to hold them. The IRS machines that scan returns can jam on metal fasteners.
How long mailed returns take to process
The IRS typically takes four to six weeks to process a mailed return, compared to two to three weeks for an e-filed return. If you are owed a refund, it arrives by mail or direct deposit after processing is complete. If you owe tax, the IRS sends a bill with payment instructions.
You can check the status of a mailed return using the IRS "Where's My Refund?" tool on irs.gov, but only after the IRS has scanned and entered your return into its system — usually three to four weeks after you mail it. Before that, the tool will show no information.
Mailing a payment without filing a return
If you are making a tax payment but filing your return electronically or in person, you can mail the payment separately. Use the same mailing address as for returns in your state, include your Social Security number and tax year on the check, and use tracked mail.
The IRS applies mailed payments to your account after it scans the envelope and check, which takes several weeks. If you need the payment recorded by a specific date — for example, to avoid a late-payment penalty — e-file your return or pay online instead through irs.gov.
What to do if your return goes missing
If you mailed your return with certified mail and the receipt shows it was delivered, but the IRS sends you a notice saying it never received your return, contact the IRS at 1-800-829-1040 with your tracking number. The IRS can search its mail room and file system.
If the certified receipt shows the return was not delivered, file a second return immediately and keep the first tracking number. The IRS will match the two and process only one. Do not wait to refile; the longer you delay, the more penalties accrue if you owe tax.
Why e-filing is faster than mailing
E-filed returns reach the IRS instantly and are processed within two to three weeks. Mailed returns spend time in transit, then in the IRS mail room, then in scanning queues before processing begins. If you have a refund coming, e-filing gets it to you weeks sooner.
E-filing also reduces errors — tax software checks your math and flags missing information before you send. Mailed returns with errors trigger notices and delays. If you can file electronically, the time and certainty gain is substantial.
Frequently Asked Questions
Can I mail my return to a local IRS office instead of the state address?
No. Local IRS offices do not accept mailed returns. You must use the address listed for your state on irs.gov. Using any other address delays processing and can cause the return to be lost or misrouted.
What if I mail my return but then realize I made a mistake?
Do not mail a second return. Wait for the IRS to process the first one, then file an amended return using Form 1040-X. Filing a second return before the first is processed creates confusion and delays both. If the error is urgent — for example, you claimed the wrong dependent — call the IRS at 1-800-829-1040 before mailing.
Do I need to mail my W-2s and 1099s with my return?
No. Keep copies for your records, but do not mail the originals unless the IRS asks for them in a notice. The IRS receives W-2s and 1099s directly from employers and payers, so it already has them on file. Mailing them slows processing.
How do I know if the IRS received my mailed return?
Use certified mail with return receipt so you have proof of delivery. Then wait three to four weeks for the IRS to scan and enter your return into its system. After that, the "Where's My Refund?" tool on irs.gov will show status. Before that, the tool has no information to display.
Can I mail my return to the IRS after the filing deadline?
Yes, but penalties and interest begin accruing on any tax you owe. The filing deadline is April 15 (or the next business day if the 15th falls on a weekend or holiday). A mailed return postmarked by that date is considered on time, even if the IRS does not receive it until weeks later.