Nonresident Spouse Election: Treat Your Spouse as a US Resident
In this guide
Quick answer: The nonresident spouse election lets a married couple, where one spouse is a US citizen or US resident and the other is not, choose to treat the nonresident spouse as a US resident for tax and file a joint return. The catch: both spouses then report worldwide income, and the choice lasts until it is suspended or ended.
Couples with one US-resident spouse often ask whether they can file jointly. The IRS allows it, but the choice reshapes the tax position of both of you for years. This guide covers what you agree to, how to make the choice and how it ends. It uses the IRS page on the nonresident spouse. Related residency rules are in our green card test and substantial presence test guides.
Who can make the election?
At the end of your tax year you must be married, and one spouse must be a US citizen or US resident (within the meaning of the tax code) while the other is not. The IRS says this includes cases where one spouse was not a US resident at the start of the year but was at the end, and the other was not a US resident at the end of the year.
What does the choice mean for you?
- You and your spouse are treated as US residents for federal income tax for all years the choice is in effect. For Social Security and Medicare withholding, the nonresident spouse may still be treated as a nonresident.
- You must file a joint return for the year you make the choice. In later years you can file jointly or separately.
- Each spouse must report their entire worldwide income for the year of the choice and every later year, unless it is ended or suspended.
- Generally, neither spouse can claim tax treaty benefits as a resident of a foreign country in a year the choice applies. A treaty’s exception to the saving clause might still allow a benefit on certain income.
- Special rules for dual-status taxpayers do not apply to a joint return under this provision.
What if you do not make the choice?
You may be able to use head of household status, if you pay more than half the cost of maintaining a household for certain dependents or relatives other than your nonresident spouse. The IRS refers to Publication 501 for details.
How do you make the choice?
Attach a statement, signed by both spouses, to your joint return for the first tax year it applies. The statement must say that on the last day of the tax year one spouse was neither a US citizen nor US resident and the other was, and that you choose to be treated as US residents for the entire tax year. It must give each spouse’s name, address and identification number.
You can also make the choice on a joint amended return (Form 1040-X) within 3 years from the date you filed the original return or 2 years from the date you paid the tax, whichever is later. If you do this, you must amend any later returns you already filed.
Does your spouse need an SSN or ITIN?
Yes, whether you file jointly or separately. A spouse who is not eligible for an SSN can apply for an ITIN with Form W-7. To get an SSN for a spouse, apply at a Social Security office or US consulate with Form SS-5 and original or certified documents. See how to apply for an ITIN and the tax benefits an ITIN unlocks.
When is the choice suspended or ended?
The choice does not apply to a later year if neither spouse is a US citizen or US resident at any time during that year. It resumes if one of you becomes a US resident again. It ends through revocation by either spouse, the death of either spouse, legal separation or inadequate records.
The IRS warns that if the choice ends, neither spouse can make it again in any later tax year, even if married to a different person. In its words it is a once-in-a-lifetime choice. Publication 519 has the detail on ending it.
Common mistakes
- Making the choice without realising it brings the nonresident spouse’s foreign income into US tax.
- Forgetting that the choice may rule out treaty benefits.
- Not getting an SSN or ITIN for the spouse.
- Letting the choice end through poor records, which loses it permanently.
Frequently asked questions
Do we both have to file joint in later years?
No. After the first year you can file jointly or separately, as long as one of you is a US citizen or resident.
Can we change our minds later?
Either spouse can revoke it. After that it cannot be made again.
Does this change Social Security tax withholding?
For withholding purposes the nonresident spouse may still be treated as a nonresident, per the IRS page.
Key takeaways
- The election lets you file a joint return with a nonresident spouse by treating them as a US resident.
- Both spouses are then taxed on worldwide income.
- Once ended, it can never be made again.
Related guides
- The green card test
- The substantial presence test
- Tax treaty benefits
- SSN vs ITIN
- Your first 90 days in a new country
This page is general information, not legal or tax advice. Last updated: October 2026.
Sources
Internal Revenue Service: Nonresident spouse; U.S. residents.