Mail your 1040 to the IRS service center that covers your state, not the main IRS office
The IRS publishes a specific mailing address for each state based on where you live. Using the correct address speeds up processing and reduces the chance your return gets lost or delayed. The address depends on whether you are mailing a paper return with a refund or paying taxes owed — they go to different locations.
You can find your state's mailing address in two places: the IRS website at irs.gov (search "where to file") or in the instructions that come with Form 1040. The address also appears on the back of the 1040 form itself. Write it clearly on the envelope and use first-class mail or certified mail if you want proof of delivery.
Do not mail your return to a local IRS office, a tax professional's office, or the address on your prior year return. Each year the IRS may change which service center handles your state, so always check the current year's instructions.
Key Takeaways
- The IRS publishes a different mailing address for each state, and you must use the one for your state of residence, not the main IRS headquarters.
- The correct address appears in the Form 1040 instructions, on the back of the 1040 form itself, and on the IRS website under "where to file".
- Mail your return using first-class mail or certified mail so you have proof it was sent if questions arise later.
- Processing time for a mailed return is typically four to six weeks, but can extend to eight weeks during peak filing season.
- You can track your refund status online using the IRS Where's My Refund tool once the IRS receives and processes your return.
How to find the correct mailing address for your state
Go to irs.gov and search for "where to file" or "mailing addresses". The IRS lists addresses by state and by filing status (single, married filing jointly, head of household, and so on). Some states have multiple service centers, and the IRS directs you to the correct one based on the first letter of your last name or your state of residence.
The Form 1040 instructions booklet also contains a table with all mailing addresses. If you ordered a paper copy of the form from the IRS, the address is printed on the back of the form itself. Write down the full address, including the ZIP code, before you seal your envelope.
Do not use an address from a prior year return or from a tax software printout unless you have confirmed it matches the current year's IRS list. The IRS consolidates and relocates service centers periodically, so an address that was correct three years ago may no longer be active.
What to include in the envelope with your 1040
Include only the documents the IRS asks for: the completed Form 1040, any required schedules (such as Schedule C if you are self-employed, or Schedule A if you itemize deductions), and any supporting documents the form or instructions reference. Do not include extra documents, copies of receipts, or explanatory letters unless the IRS specifically requests them in the instructions.
If you are claiming a refund, you do not need to include a check or payment. Write your name, address, and Social Security number on the first page of the 1040 so the IRS can match the return to your account if pages separate during processing.
Use a standard business envelope or a larger envelope if your return has multiple pages. Write the IRS mailing address clearly in the center of the envelope and your return address in the upper left corner. Place a stamp on the envelope — the IRS does not accept postage-due mail.
Mailing method and delivery confirmation
First-class mail is the standard option and typically takes three to five business days to reach the IRS service center. The IRS processes returns in the order they are received, so mailing earlier in the tax season generally means faster processing.
If you want proof that the IRS received your return, use Certified Mail with Return Receipt. This costs a few dollars more but gives you a tracking number and a signed receipt showing the delivery date. Keep this receipt in case the IRS later claims it never received your return.
Do not use overnight mail or express delivery unless you are mailing very close to the April 15 deadline. The IRS does not prioritize overnight mail, and the extra cost is not worth it for a tax return.
Processing time after the IRS receives your return
Once the IRS receives your paper return, it typically takes four to six weeks to process it and issue your refund. During the peak filing season (February through April), processing can take up to eight weeks. The IRS must scan your return, verify the information, check it against your wage and income records, and then calculate and issue your refund.
You can check the status of your refund using the IRS Where's My Refund tool at irs.gov. This tool updates once per day and shows whether the IRS has received your return, is processing it, or has issued your refund. You will need your Social Security number, filing status, and the exact refund amount from your return.
If your refund does not arrive within the expected timeframe, check Where's My Refund first to see if the IRS is still processing. If the tool shows your refund was issued but you have not received it, contact the IRS at 1-800-829-1040 to report the delay.
What to do if you mail your return to the wrong address
If you realize you mailed your return to an incorrect address, contact the IRS immediately at 1-800-829-1040. Provide the IRS agent with the address where you mailed it and the date you mailed it. The IRS can sometimes intercept the return before it reaches the wrong office and reroute it to the correct service center.
If the return has already been processed at the wrong location, the IRS will transfer it to the correct service center, but this adds time to your processing. The IRS will still process your return and issue your refund, but it may take longer than the standard four to six weeks.
To prevent this problem, double-check the address against the current year's IRS instructions before you seal the envelope. Many people use the address from their prior year return without checking whether it has changed, which is the most common cause of misdirected returns.
Mailing address table by region
| Region | States Included | Service Center |
|---|---|---|
| Northeast | CT, DE, MA, ME, NH, NJ, NY, PA, RI, VT | Andover Service Center (MA) |
| Southeast | AL, AR, FL, GA, KY, LA, MS, NC, SC, TN, VA, WV | Atlanta Service Center (GA) |
| Midwest | IL, IN, IA, MI, MN, MO, OH, WI | Kansas City Service Center (MO) |
| Southwest | AZ, NM, OK, TX | Austin Service Center (TX) |
| West | AK, CA, CO, HI, ID, MT, NV, OR, UT, WA, WY | Ogden Service Center (UT) |
This table shows which service center handles each region, but you still need to check the IRS website or Form 1040 instructions for the exact mailing address, ZIP code, and any special instructions for your state. Some states have multiple addresses based on the first letter of your last name.
Frequently Asked Questions
Can I mail my 1040 to the IRS office in my city?
No. Local IRS offices do not process tax returns. You must mail your return to the service center that covers your state. The IRS publishes the correct address for each state, and using any other address delays processing and risks your return getting lost.
What if I mail my return after April 15?
The postmark date is what matters, not the date the IRS receives it. If your return is postmarked on or before April 15, the IRS treats it as timely filed, even if it arrives weeks later. Keep your mailing receipt as proof of the postmark date.
Do I need to use certified mail?
Certified mail is optional but recommended. It costs a few dollars and gives you a tracking number and signed receipt showing the delivery date. This protects you if the IRS later claims it never received your return, though this is rare.
How do I know if the IRS received my return?
Use the IRS Where's My Refund tool at irs.gov starting about two weeks after you mail your return. The tool shows whether the IRS has received it, is processing it, or has issued your refund. You can also call 1-800-829-1040 to ask if your return was received.
What if my return gets lost in the mail?
If you mailed your return using certified mail, you have proof of delivery. If you mailed it using regular first-class mail and it gets lost, contact the IRS at 1-800-829-1040 and explain the situation. The IRS can file a claim with the Postal Service and may issue your refund based on your tax records if the return cannot be located.