Where to Mail Your 1040 Tax Return in 2026: IRS Address by State

Find the right place to mail your IRS forms

We created this page because finding the correct place to mail an IRS form can be confusing. The destination can change based on where you live, which form you are sending, whether you are including a payment, and how you plan to mail it. The IRS website contains the answers, but finding the instructions that apply to your situation can take some digging.

We review and update this tool each year so you can quickly find the mailing location that matches your answers. This guide also includes practical information to help you choose a mailing method, prepare your envelope, and keep proof that your documents were sent.

If you would rather not handle the mailing yourself, you can send your IRS forms with The Letter Pilot and track the mail directly from your account dashboard.

Always verify the address before mailing

Although we check our tool frequently for accuracy, we still recommend confirming your mailing address on the official IRS website before sending your documents. You can validate the address provided by the tool using the IRS source below.

Returns with a payment use different addresses

When using our tool or checking the official IRS website, make sure you indicate whether you are enclosing a payment. The correct mailing address changes depending on whether your envelope includes a check or money order.

Why your IRS mailing address can change

Your mailing address depends on the five questions included in our lookup tool: whether you are responding to an IRS notice, where you live, which form you are mailing, whether you are including a payment, and which delivery service you plan to use. Any one of those details can change where your documents need to go.

That can be confusing unless you work with tax filings regularly. Our finder brings those details together so you can check the address that applies to your situation more easily.

How to mail your tax return safely

Here are a few helpful tips for safely mailing your tax return:

1. Sign and date everything. Review your return before mailing and make sure every required signature and date is included.
2. Save a complete copy. You may need your tax return later for a mortgage, financial application, or your own records. Keep a copy of everything you place in the envelope.
3. Make sure you are mailing it to the correct location. Confirm the address for your state, form, payment status, and mailing method before sealing the envelope.
4. Use enough postage. Tax returns can weigh more than a standard one-ounce letter. Correct postage helps prevent the envelope from being returned to you.
5. Keep your mailing and tracking records. We recommend using Certified Mail when sending a tax return so you receive a mailing receipt and can track it to its destination.

Certified Mail, postmarks, and filing deadlines

Certified Mail is the best way to send your tax return when you want a record of the mailing. It gives you tracking information, a mailing receipt, and evidence that you sent the envelope. The receipt can also help document the postmark date.

If the IRS receives your return a few days after the deadline, it is generally treated as filed on time when the envelope was properly addressed, had enough postage, and received a USPS postmark on or before the due date. I do not recommend waiting until the last minute, though. If you use a collection box, always check the posted collection time so your return does not sit there until the following day.

Frequently asked questions