Send your return to the IRS address that matches your state and filing method

The address where you send your federal income tax return depends on two things: which state you live in and whether you are mailing a paper return or filing electronically. The IRS publishes a different mailing address for each state. If you file electronically through tax software or a tax professional, you do not mail anything — the software sends it directly to the IRS.

Paper returns take four to six weeks to process after the IRS receives them. Electronic returns are processed much faster, usually within two weeks. If you are owed a refund, filing electronically typically gets you your money weeks sooner than mailing a paper return.

Key Takeaways

  • The IRS publishes state-specific mailing addresses on its website; using the wrong address delays processing.
  • Electronic filing sends your return directly to the IRS and processes faster than paper mail.
  • If you mail a paper return, include your Social Security number and check number on the envelope.
  • The IRS does not accept returns by email, fax, or courier services — only mail or electronic filing.
  • You can track a mailed return using the IRS tracking tool on IRS.gov after 24 hours.

Finding your state's mailing address

The IRS maintains a list of mailing addresses for each state on its website at IRS.gov. Search for "where to file" or "mailing addresses" on that site. The address changes depending on whether you are filing Form 1040 (the main individual income tax form), a business return, or an amended return. Make sure you are looking at the correct form before you write the address on your envelope.

Some states have multiple addresses based on the type of return. For example, if you are mailing a Form 1040 from California, the address is different than if you are mailing an amended return (Form 1040-X) from California. The IRS website lists all of these separately, so check the specific form you are mailing.

Do not use an address you find on a tax software box or an old return. The IRS changes mailing addresses periodically, and using an outdated address can add weeks to processing time.

Electronic filing through tax software or a tax professional

If you file electronically, you do not mail anything to the IRS. Tax software (such as TurboTax, H&R Block, or TaxAct) submits your return directly to the IRS when you click "file" or "submit." A tax professional or CPA can also file electronically on your behalf. The software or professional handles routing the return to the correct IRS system.

Electronic returns are accepted starting in late January each year and must be filed by the tax important date (usually April 15). The IRS confirms receipt of an electronic return within 24 hours. You receive an acknowledgment number that proves the IRS received your return.

What to include if you are mailing a paper return

If you mail a paper return, write your name, address, and Social Security number on the outside of the envelope. Include your check number if you are paying taxes owed. Do not staple anything to the envelope. Use regular first-class mail, not certified mail or overnight delivery — the IRS does not accept returns sent by courier services or overnight mail.

Mail your return to the address listed on the IRS website for your state and form type. Double-check the address before you seal the envelope. An incorrect address means your return goes to the wrong office and processing is delayed.

Tracking a mailed return

You can track a mailed paper return using the IRS's "Where's My Return?" tool on IRS.gov. This tool becomes available 24 hours after you mail your return. You will need your Social Security number, filing status, and the refund amount (or amount owed) to use the tracker.

The tracker shows whether the IRS has received your return and when it was processed. If your return does not appear in the tracker after two weeks, contact the IRS at 1-800-829-1040 to confirm the address you used was correct.

Special situations: amended returns and business returns

An amended return (Form 1040-X) goes to a different address than your original return. The IRS website lists the amended return address for each state separately. Do not send an amended return to the same address as your original return.

If you are self-employed or have business income, you may file Schedule C along with your Form 1040. This still goes to the same address as your Form 1040 for your state. However, if you are filing a business tax return (such as Form 1120 for a corporation), that has its own mailing address, which is also listed on the IRS website.

What happens after the IRS receives your return

Once the IRS receives your return, it is scanned and entered into the IRS computer system. This process takes about two weeks for electronic returns and four to six weeks for paper returns. The IRS then processes your return, checks for errors, and calculates your refund or the amount you owe.

If the IRS has questions about your return, it will mail you a letter. This letter includes a specific issue and instructions for responding. You do not need to do anything unless you receive a letter from the IRS.

Frequently Asked Questions

Can I email my tax return to the IRS?

No. The IRS does not accept returns by email, fax, or any digital method except through official tax software or an authorized tax professional filing electronically. Paper returns must be mailed to your state's address, and electronic returns must go through approved software or a professional.

What if I use the wrong mailing address?

Your return will be delayed. It may be forwarded to the correct office, or it may be returned to you. If your return does not appear in the "Where's My Return?" tracker after two weeks, call the IRS at 1-800-829-1040 to report the issue and confirm the correct address.

Is it faster to mail my return or file electronically?

Electronic filing is much faster. Paper returns take four to six weeks to process; electronic returns usually process within two weeks. If you are owed a refund, filing electronically gets you your money significantly sooner.

Do I need to use certified mail or overnight delivery?

No. Use regular first-class mail. The IRS does not accept returns sent by overnight courier services or certified mail. Regular mail is sufficient and is what the IRS expects.

How do I know if the IRS received my mailed return?

Use the "Where's My Return?" tool on IRS.gov starting 24 hours after you mail your return. You will need your Social Security number, filing status, and refund amount. If your return does not appear after two weeks, contact the IRS at 1-800-829-1040.