Introduction
The right Form 1040-X address depends on where you live. US residents follow a state-based route, while filers in Australia and other countries outside the US use a separate address.
Don't assume it matches the address you used for your original return. The original Form 1040 splits international filers by whether they enclose a payment. Form 1040-X doesn't.
The IRS lists the current form and instructions as Rev. December 2025, with no separate 2027 edition. This guide covers the state address table, the Australian route, a mailing checklist, e-filing options, and how to verify the address before you post.
Key Takeaways
- Form 1040-X goes to Austin, Ogden or Kansas City by state, or to Austin 73301-0215 from abroad.
- Check the current IRS Form 1040-X instructions before sealing the envelope.
- E-filing covers only the current and two prior tax periods.
- File one 1040-X per year, and handle Australian amendments separately.
What Is Form 1040-X and When Is It Used?
Form 1040-X amends a previously filed Form 1040, 1040-SR or 1040-NR. You file a separate form for each tax year.
Common reasons to amend
- Changes to income, filing status, dependants, deductions or credits
- Late or corrected tax documents
- Changes to other taxes or withholding
You generally don't need to amend for maths errors the IRS corrects itself. If the IRS asks for missing forms by letter, send them in reply.
Refund-claim deadlines
Under IRC 6511(a), the IRS refund-claim rules set the general limit at 3 years from filing or 2 years from payment, whichever is later. Exceptions exist:
- Bad debt and worthless securities: 7 years
- Financial disability: the period can be suspended
- Foreign tax credit: generally 10 years from the unextended due date
This is general information, not personal tax advice.
Where to Mail Form 1040-X in 2026-2027
The address depends on your state of residence or foreign-filer status, not where your tax preparer sits. Send the form and attachments to the address below. Each address begins with "Department of the Treasury, Internal Revenue Service."
| Residence | Mail to |
|---|---|
| Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Texas | Austin, TX 73301-0052 |
| Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa, Kansas, Michigan, Montana, Nebraska, Nevada, New Mexico, North Dakota, Ohio, Oregon, South Dakota, Utah, Washington, Wyoming | Ogden, UT 84201-0052 |
| Connecticut, Delaware, District of Columbia, Illinois, Indiana, Kentucky, Maine, Maryland, Massachusetts, Minnesota, Missouri, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia, Wisconsin | Kansas City, MO 64999-0052 |
Copy the address exactly, including the ZIP+4 suffix.
Paying a balance due
The 1040-X instructions list no separate payment address. If you owe tax, enclose a cheque or money order in the same envelope. Don't staple or clip it.
- Make it payable to "U.S. Treasury"
- Write your name, address, phone, taxpayer ID, tax year and "Form 1040-X" on it
You can also pay through Direct Pay or by card. EFTPS is listed, but the IRS says it is not accepting new individual accounts.
Verify before mailing. Addresses reflect the December 2025 instructions. The IRS can change them for future seasons, so confirm against the current Form 1040-X instructions before you mail.
Where to Mail Form 1040-X From Australia or Another Foreign Country
Australian filers mail Form 1040-X to the foreign-country address, even if you're a US citizen who previously lived in a US state:
Department of the Treasury
Internal Revenue Service
Austin, TX 73301-0215
Who else uses this address
- US territories and possessions
- APO/FPO addresses
- Form 2555 or 4563 filers
- Dual-status aliens
- Form 1040-NR amendments
If you're responding to an IRS notice, use the address printed on the notice instead.
Don't confuse it with the original return
An original international Form 1040 with payment goes to Charlotte, NC. That rule doesn't apply to Form 1040-X. The Philadelphia "International Accounts" address is a contact address, not the 1040-X destination.
For help, the IRS international line is +1 267-941-1000 (not toll-free), Monday to Friday, 6 am to 11 pm Eastern.
Australian and foreign tax changes
An amended Australian return is separate from Form 1040-X.
If a foreign tax redetermination changes your US tax liability for a year, you must file an amended US return for that year. If no year's US tax changes, no amended return is required under that rule.
Check how each amendment affects both countries' records.
How to Prepare and Mail Form 1040-X
Preparation checklist
- Download the latest Form 1040-X
- Prepare a completed, corrected Form 1040, 1040-SR or 1040-NR
- Gather corrected income documents and supporting evidence
- Include copies of changed or new forms and schedules
- Explain each change in Part II, Explanation of Changes
Filling in the columns
- Column A: original amounts, or amounts from an earlier amendment, audit or IRS notice
- Column B: the net increase or decrease, with negatives in parentheses
- Column C: corrected amounts, carrying unchanged items over from A
Attach the corrected return, not just the affected schedules. Don't attach a copy of the original return or old correspondence unless required.
Use a separate form for each year, and never combine a US amendment with an Australian or state one.
Mailing precautions
- Use the exact IRS address and enough postage (international postage costs more)
- Keep copies of everything you send
- Don't send irreplaceable originals
Proof of mailing
Under IRC 7502, a proper address, prepaid postage and a qualifying postmark are required for timely-filing proof. USPS certified or registered mail provides evidence, but USPS provisions don't designate Australia Post services. From Australia, a designated private carrier is the safer route.
Designated services include DHL Express, FedEx International Priority and UPS Worldwide Express, among others. Check the IRS private delivery list for the exact service names. Couriers use street addresses, prefixed with "Internal Revenue Submission Processing Center":
- Austin: 3651 S IH35, Austin, TX 78741
- Kansas City: 333 W. Pershing, Kansas City, MO 64108
- Ogden: 1973 Rulon White Blvd., Ogden, UT 84201
If you need help reviewing a US amended return from Australia, VJM Global's tax and compliance team can assist.
Can You File Form 1040-X Electronically?
Often, yes. The IRS accepts e-filed amendments for Forms 1040, 1040-SR and 1040-NR for the current tax period plus two prior periods.
Limits to check
- A prior-year original filed on paper means a paper amendment
- Your software provider must support amendments
- Up to three electronic amendments per tax year
- Free File Fillable Forms can't prepare amendments
Free File users should use the same guided software as the original return.
E-file or paper?
E-filing gives an electronic confirmation and avoids postal risk, which matters when you mail from Australia. Paper is necessary for ineligible years or unsupported situations. The IRS says processing generally takes 8 to 12 weeks, sometimes up to 16.
If e-filing isn't available
- Prepare the paper Form 1040-X
- Mail it to the correct current address
- Keep your mailing evidence
- Track it with Where's My Amended Return, if eligible
Tracking covers the current year plus three prior years, but it excludes foreign-address amended returns. Australian filers may need to call the IRS instead.
Frequently Asked Questions
Where should I mail my 1040-X form?
Use the state-based table above. If you live in Australia or elsewhere outside the United States, mail to Austin, TX 73301-0215. Confirm against the latest IRS instructions.
Can I file Form 1040-X electronically?
Eligible returns from the current and two prior periods can be e-filed. Others must be mailed. Confirm IRS and software eligibility first.
What is Form 1040-X?
It corrects a previously filed US individual federal return. It's generally not needed for a simple maths error the IRS fixes.
Does Form 1040-X use the same mailing address as Form 1040?
Not always. A foreign Form 1040-X shares Austin 73301-0215 with an original international Form 1040 sent without payment, but an original with payment goes to Charlotte.
Where do I mail Form 1040-X if I live in Australia?
Send it to Department of the Treasury, Internal Revenue Service, Austin, TX 73301-0215, unless an IRS notice gives a different address. Verify special-status rules first.
