How much do I save by filing jointly with my spouse's ITIN?

Married Filing Jointly (MFJ) versus Married Filing Separately (MFS) saves $3,000 to $12,000 annually depending on income. At $60,000 household income, MFJ saves approximately $3,200. At $100,000, savings reach $5,800. At $150,000 or above, savings can exceed $12,000. MFS also disqualifies you from the Earned Income Tax Credit, American Opportunity Credit, and student loan interest deduction.

What documents does my spouse need for an ITIN?

Your spouse needs 3 documents: a valid passport, your marriage certificate, and your spouse's birth certificate. The passport must be current and not expired. The marriage certificate must be an official copy from the issuing government (civil registry or equivalent). If your spouse does not have a passport, provide two alternative identity documents from the IRS accepted list plus the marriage certificate.

Can my spouse get an ITIN if they live outside the United States?

Yes. A non-resident spouse can obtain an ITIN for filing a joint US tax return. You elect to treat your non-resident spouse as a US resident for tax purposes by attaching a statement to your Form 1040 under IRC 6013(g). This election means worldwide income of both spouses is reported on the joint return. The spouse's W-7 is mailed with the joint return to the IRS ITIN Center in Austin, Texas.

How long does it take to get an ITIN for my spouse?

The IRS processes ITIN applications in 6 to 11 weeks from receipt. Using a Certifying Acceptance Agent like itin.so reduces rejection risk because documents are pre-verified. Standard service costs $297 with 7-10 business day preparation. Express service costs $297 with 2-3 business day preparation. Plan ahead so the ITIN is ready before the April 15 filing deadline or October 15 extended deadline.

Can I file jointly if my spouse does not have an SSN yet?

Yes. File your joint Form 1040 with your spouse's W-7 application attached. Write 'APPLIED FOR' in the SSN field for your spouse. The IRS assigns the ITIN and processes the tax return together. Your refund will be delayed until the ITIN is issued, typically 6 to 11 weeks. Once the ITIN is assigned, the IRS releases any refund due within 2 to 3 weeks.

Does my spouse's ITIN expire?

Yes. ITINs expire if not used on a federal tax return for 3 consecutive years. If your spouse's ITIN expires, file a renewal Form W-7 with the same identity documents before submitting your joint return. Renewal processing takes 6 to 11 weeks. itin.so handles renewals for $297 (standard) or $297 (express). File the renewal early in the tax season to avoid delays.

Can my spouse work with an ITIN?

No. An ITIN does not authorize employment in the United States. Only a Social Security Number or Employment Authorization Document (EAD) provides work authorization. However, your spouse can use the ITIN to file taxes on any income they earn, open bank accounts, build credit, and establish a financial identity in the US. If your spouse later receives an SSN through immigration benefits, the ITIN is retired.

What if my marriage certificate is in a foreign language?

The IRS requires English translations of all foreign-language documents. Attach a certified English translation to the original foreign-language marriage certificate. The translator must certify in writing that the translation is complete and accurate. itin.so provides translation services as part of the application package for documents in Spanish, Portuguese, Chinese, and 12 other languages.

Can I amend prior tax returns after my spouse gets an ITIN?

Yes. Once your spouse receives an ITIN, you can amend up to 3 prior years of tax returns from MFS to MFJ using Form 1040-X. Each amended return can generate a refund of $3,000 to $12,000 depending on income. The statute of limitations for claiming a refund is 3 years from the original filing date or 2 years from the date of payment, whichever is later.

Updated April 2026

ITIN for Spouse of US Citizen 2026: Save $3,000 to $12,000 Filing Jointly

Filing as Married Filing Jointly saves $3,000 to $12,000 per year compared to Married Filing Separately. If your spouse does not have a Social Security Number, they need an ITIN for spouse to appear on your joint Form 1040. The application requires Form W-7 filed with your joint tax return, a valid passport, marriage certificate, and birth certificate. itin.so processes your spouse's application for $297 (standard) or $297 (express), with IRS approval in 6 to 11 weeks.

How Much Do You Save Filing Jointly with a Spouse ITIN?

Married Filing Jointly versus Married Filing Separately produces savings of $3,000 to $12,000 annually depending on household income. The difference comes from wider tax brackets, higher standard deduction, and access to credits that MFS disqualifies.

Household Income	Tax (MFJ)	Tax (MFS)	Annual Savings
$50,000	$4,118	$6,748	$2,630
$75,000	$7,468	$11,248	$3,780
$100,000	$11,990	$17,748	$5,758
$150,000	$22,990	$31,248	$8,258
$200,000+	$34,490	$46,748	$12,258

Beyond bracket savings, MFS eliminates eligibility for the Earned Income Tax Credit (worth up to $7,430 for 2025), the American Opportunity Credit ($2,500), the Lifetime Learning Credit ($2,000), and the student loan interest deduction ($2,500). MFS also reduces the Child and Dependent Care Credit and prevents traditional IRA deductions for covered spouses.

What Documents Does Your Spouse Need for an ITIN?

Three documents are required: a valid passport, your official marriage certificate, and your spouse's birth certificate. The passport is the strongest single document because it proves identity and foreign status simultaneously.

Passport Requirements

The passport must be current (not expired) at the time of application. It must contain the spouse's full legal name, date of birth, photograph, and country of citizenship. If you use a Certifying Acceptance Agent like itin.so, the CAA verifies the passport and you keep the original. Without a CAA, you must mail the original passport to the IRS, which returns it in 8 to 14 weeks.

Marriage Certificate

The marriage certificate must be an official copy issued by the civil registry or government authority that performed the marriage. Church certificates or ceremonial documents are not accepted. If the certificate is in a foreign language, attach a certified English translation. The translator must include a signed statement that the translation is complete and accurate.

Birth Certificate

Your spouse's birth certificate must be a certified copy from the issuing government authority. It confirms the spouse's identity and provides additional verification for the W-7 application. Like the marriage certificate, foreign-language documents need certified English translations. View the full ITIN document requirements.

How Do You Apply for a Spouse ITIN Step by Step?

5 steps to get your spouse's ITIN and file jointly. The entire process takes 6 to 11 weeks from submission to ITIN receipt.

Complete Form W-7 for your spouse. Enter your spouse's legal name, foreign address, date of birth, and country of citizenship. Check reason (a): "Nonresident alien required to get an ITIN to claim tax treaty benefit" or reason (h): "Dependent/spouse of a nonresident alien holding a US visa."
Prepare your joint Form 1040. File as Married Filing Jointly. Enter your SSN and write "APPLIED FOR" in your spouse's SSN field. If your spouse is a non-resident, attach the IRC 6013(g) election statement to treat them as a resident.
Gather your spouse's documents. Passport, marriage certificate, and birth certificate. All foreign-language documents need certified English translations.
Submit through itin.so. As a Certifying Acceptance Agent, itin.so verifies your spouse's documents so they keep their original passport. Standard service: $297, express: $297.
Receive the ITIN and refund. The IRS issues your spouse's ITIN in 6 to 11 weeks via CP565 notice. Your tax refund is released within 2 to 3 weeks after the ITIN is assigned.

Already filed as MFS? You can amend:

If you already filed as Married Filing Separately, get your spouse's ITIN and amend up to 3 prior years using Form 1040-X. Each amended return can generate a refund of $3,000 to $12,000. Start the process today.

Can You File Jointly if Your Spouse Lives Abroad?

Yes. Under IRC 6013(g), you can elect to treat your non-resident spouse as a US resident for tax purposes. This election allows you to file a joint return and claim the lower MFJ tax rates, standard deduction of $30,000 (2025), and all applicable credits.

The trade-off is that both spouses must report worldwide income on the joint return. If your spouse earns income abroad, you may be able to claim the Foreign Earned Income Exclusion (up to $130,000 for 2025) or Foreign Tax Credit to avoid double taxation. Consult our guide on ITIN for non-residents for details on filing from abroad.

Should You Also Get ITINs for Your Children?

Yes, if your children do not have SSNs and you want to claim them as dependents. Each child with an ITIN qualifies for the $500 Other Dependent Credit. A family with 3 children saves an additional $1,500 annually. Submit all family W-7 applications together with your joint return for faster processing.

Read our complete guide on ITIN for dependents for document requirements by age group and the full application process for children.

Stop Overpaying Taxes — File Jointly with Your Spouse

Every year without your spouse's ITIN costs $3,000 to $12,000 in excess taxes. itin.so processes your spouse's application for $297 (standard) or $297 (express).

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Frequently Asked Questions About ITIN for Spouse

Yes. If your spouse does not have a Social Security Number, they need an ITIN to be listed on a joint Form 1040. The IRS requires a valid taxpayer identification number for both spouses on a joint return. Without an ITIN, you must file as Married Filing Separately (MFS), which results in a higher tax rate and loss of multiple credits. Filing jointly saves $3,000 to $12,000 per year depending on your income level.

Save thousands every year by filing jointly. Get your spouse's ITIN today.

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