Can I File Married Filing Jointly If Spouse Has No SSN?

Yes, you can file Married Filing Jointly when your spouse has no Social Security Number, but it takes two extra steps: a written election under Internal Revenue Code Section 6013(g) to treat your nonresident spouse as a U.S. resident for tax purposes, and an Individual Taxpayer Identification Number (ITIN) obtained through Form W-7. The payoff is real. For tax year 2026, joint filers get a $32,200 standard deduction, compared with $16,100 for Married Filing Separately.¹ The tradeoff is that your spouse’s worldwide income comes onto your return, and foreign account reporting rules start to apply.

The Section 6013(g) Election

The IRS does not automatically allow a joint return when one spouse is a nonresident alien. You have to affirmatively elect to treat that spouse as a U.S. resident under IRC Section 6013(g). Both spouses must agree, and at the close of the tax year at least one spouse must be a U.S. citizen or resident alien.²

Once made, the election treats your nonresident spouse as a U.S. resident for the entire tax year and carries forward automatically into every future year until something ends it. You only make it once.

How to Attach the Election Statement

You make the election by attaching a signed statement to your joint Form 1040. Both spouses sign. The statement must include each spouse’s name, address, and taxpayer identification number, along with a declaration that one spouse was a nonresident alien on the last day of the tax year, the other was a U.S. citizen or resident alien, and both choose to be treated as U.S. residents for the entire tax year.³

Making the Election on an Amended Return

If you already filed separately and later realize joint filing would have worked out better, you can make the 6013(g) election on an amended return using Form 1040-X. The deadline is three years from the date you filed the original return, or two years from the date you paid the tax, whichever is later. If you amend one year, you also need to amend any later returns affected by the change in filing status.³

What the Election Costs You

Once the election is in place, your nonresident spouse is subject to U.S. tax on their worldwide income for as long as it stays in effect. Every dollar of foreign wages, foreign bank interest, and foreign investment gain has to appear on your joint Form 1040.² For couples whose nonresident spouse earns little abroad, this is usually a good deal. For couples with a nonresident spouse who has significant foreign earnings or investments, the math changes quickly.

The election also generally blocks your spouse from claiming benefits under a U.S. income tax treaty as a resident of their home country. Any treaty relief that would have reduced or eliminated U.S. tax on certain income typically disappears once the resident-alien election takes effect.

Foreign Account Reporting

This is where couples get blindsided. Treating your spouse as a U.S. resident pulls their foreign accounts into two separate reporting regimes.

The first is the Report of Foreign Bank and Financial Accounts (FBAR), filed as FinCEN Form 114. If the combined value of all foreign financial accounts exceeds $10,000 at any point during the calendar year, both spouses must file. The FBAR is not a tax form; it goes to the Financial Crimes Enforcement Network, and penalties for skipping it are severe.⁴

The second is Form 8938 under FATCA. Joint filers living in the U.S. must file Form 8938 if the total value of specified foreign financial assets exceeds $100,000 on the last day of the tax year or $150,000 at any time during the year. For joint filers living abroad, the thresholds are $400,000 and $600,000.⁵ Missing Form 8938 can cost a $10,000 penalty, with up to $50,000 more for continued noncompliance after IRS notification, plus a 40 percent penalty on any tax understatement tied to the undisclosed assets.⁶

Getting Your Spouse an ITIN

Your nonresident spouse needs a taxpayer identification number to appear on the joint return. If they aren’t eligible for an SSN, you apply for an ITIN using IRS Form W-7. An ITIN is a nine-digit number used only for federal tax purposes. It does not authorize employment and does not provide Social Security eligibility.⁷

Identity Documents

Documentation is the hardest part of the process. The IRS requires original documents or certified copies issued by the original agency. Notarized copies are not accepted. A valid passport is the simplest route because it proves both identity and foreign status by itself. Without a passport, your spouse needs two documents that together establish identity (with a photograph) and foreign status, such as a national ID card paired with a birth certificate.⁸

Three Ways to Submit

Mail the complete package to the IRS ITIN Operations unit in Austin, Texas. Original documents travel with the application and are returned after processing. The risk of loss or delay makes this the least attractive option.
Visit an IRS Taxpayer Assistance Center. An IRS employee reviews the originals, certifies copies, and accepts the application in person, so nothing has to leave your hands.
Use a Certifying Acceptance Agent (CAA). A CAA is authorized to verify identity documents and submit the application for you, certifying that they saw the originals. Fees vary and typically run into the hundreds of dollars.

Why W-7 Applications Get Rejected

Rejections are more common than most applicants expect. The frequent problems: copies that were not certified by the issuing agency, documents outside the IRS’s list of 13 accepted forms of identification, and a missing Certificate of Accuracy when a CAA is involved. Applicants age 18 and older must sign the form themselves unless a valid power of attorney applies. Having a spouse or relative sign in their place will get the application kicked back.

ITINs Expire

An ITIN is not permanent. If your spouse’s ITIN is not used on a federal tax return for three consecutive tax years, it expires on December 31 of the third year. ITINs originally assigned before 2013 that were never renewed have also expired. Renewal uses the same Form W-7 with the same documentation.⁸ Filing with an expired ITIN delays processing, so check the status before each filing season.

Filing the First-Year Package

When you apply for the ITIN alongside the joint return, mail the whole package to the IRS ITIN Operations address in Austin, Texas, not to the standard filing address for your area. You cannot e-file a return where the ITIN is being requested for the first time. In the SSN field for your spouse on Form 1040, write “APPLIED FOR.”⁹

The package has three pieces: the completed Form 1040 with both spouses listed, the signed Section 6013(g) election statement, and Form W-7 with supporting identity documents. Attach the election statement and the W-7 to the front of the return.

Expect a wait. The IRS estimates about seven weeks for an ITIN application outside of tax season, and nine to eleven weeks between January 15 and April 30 or when applying from overseas.⁹ The IRS processes the W-7 first, assigns the ITIN, and only then begins processing the return. Any refund is delayed accordingly. Once the ITIN is on file, future returns can be e-filed normally.

Credits You Can and Cannot Claim

Filing jointly with an ITIN-holding spouse unlocks most joint-filing benefits, but a few credits carry SSN requirements that an ITIN cannot satisfy.

The Earned Income Tax Credit requires a work-authorized SSN for the taxpayer, the spouse, and every qualifying child. If your spouse has only an ITIN, the EITC is off the table on a joint return.¹⁰

The Child Tax Credit requires each qualifying child to have a work-authorized SSN issued before the return’s due date. A child with only an ITIN does not qualify for the CTC, though you can claim the Credit for Other Dependents for that child, worth up to $500.¹⁰ A child who does have an SSN can still qualify for the full CTC even when your spouse is on the return under an ITIN.

When the Election Ends

A 6013(g) election stays in force until one of four things happens:²

Revocation. Either spouse can revoke unilaterally; both do not have to agree. The revocation takes effect as of the first tax year whose filing deadline has not yet passed.
Death. The election ends at the start of the surviving spouse’s next tax year. A surviving spouse who qualifies for surviving-spouse filing status under IRC Section 2 continues the election through the end of that qualifying period.
Divorce or legal separation. The election terminates at the beginning of the tax year in which the separation or divorce occurs.
IRS termination. The IRS can end the election if either spouse fails to keep adequate records or provide information needed to determine tax liability.

One detail catches people off guard: this is a once-in-a-lifetime election. Once it ends for any reason, neither spouse can make a 6013(g) election again, even in a later marriage to a different person.³ The election also automatically suspends for any year in which neither spouse is a U.S. citizen or resident at any point during the year, and it resumes when one of them regains that status.²

When Joint Filing Isn’t Worth It

Not every couple should make the election. If your nonresident spouse has substantial foreign income or foreign accounts, the worldwide-income rule and the FBAR and FATCA reporting can outweigh the joint-filing benefits. Two alternatives exist.

Married Filing Separately

This is the default when you are married to a nonresident alien and don’t make the election. You file on your own income only. The 2026 standard deduction is $16,100, and several credits and deductions phase out at lower thresholds.¹ You cannot claim your nonresident alien spouse as a dependent.¹¹

Head of Household

If you have a qualifying dependent living with you, Head of Household is usually the better alternative. A taxpayer whose spouse is a nonresident alien at any point during the tax year is treated as unmarried for Head of Household purposes.¹² You must also pay more than half the cost of maintaining the home, and a qualifying person, typically a dependent child, must live in that home for more than half the year.³

The 2026 Head of Household standard deduction is $24,150, meaningfully better than the $16,100 for Married Filing Separately, though still below the $32,200 joint deduction.¹ Head of Household also uses more favorable brackets than MFS and avoids the worldwide-income and foreign-account reporting that come with the 6013(g) election.

1
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
2
Office of the Law Revision Counsel. 26 USC 6013 – Joint Returns of Income Tax by Husband and Wife
3
Internal Revenue Service. Nonresident Spouse
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Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
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Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
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Internal Revenue Service. Summary of FATCA Reporting for US Taxpayers
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Internal Revenue Service. About Form W-7
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Internal Revenue Service. Instructions for Form W-7
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Internal Revenue Service. Individual Taxpayer Identification Number (ITIN)
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Taxpayer Advocate Service. Valuable Information About Child and Dependent-Related Tax Benefits
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Internal Revenue Service. International Taxpayers Filing Status If Married to a Nonresident Alien
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Office of the Law Revision Counsel. 26 US Code 2 – Definitions and Special Rules