How to File Your US Taxes Correctly When Married to a Non-US Spouse

For US citizens living anywhere in the world, the complexities of filing US taxes are often compounded when married to a non-US spouse. The unique nature of the US’s citizenship-based taxation means that even if you live abroad and your spouse is not a US citizen or resident, their financial situation can significantly impact your filing requirements. This guide will help you understand the foreign spouse rules, your filing options, and the essential steps to ensure you file your US taxes correctly.

The Foundation: US Citizenship-Based Taxation

The fundamental principle to grasp is that US citizens and green card holders are generally taxed on their worldwide income, regardless of where they live. This means even if your non-US spouse has no connection to the US, their income and assets might become relevant to your US tax return.

Understanding Your Spouse’s Residency Status

The first critical step is to determine your non-US spouse’s US tax residency status. This will dictate your available filing options.

• Non-Resident Alien (NRA): This is the most common status for a non-US spouse. An NRA is generally someone who does not have a Green Card and does not meet the “substantial presence test” (a complex calculation based on days spent in the US over a three-year period).
• Resident Alien: A non-US citizen may be considered a US Resident Alien if they hold a Green Card or meet the substantial presence test. If your spouse is a resident alien, they are generally taxed like a US citizen on their worldwide income, simplifying joint filing.

This guide primarily focuses on situations where your non-US spouse is a Non-Resident Alien (NRA).

Your Filing Options When Married to a Non-US Spouse

When married to a Non-Resident Alien (NRA) spouse, you typically have two primary filing options, each with distinct implications:

1. Married Filing Separately (MFS): The Default
   • How it works: This is the automatic filing status if you do not elect to treat your NRA spouse as a US resident. You file your own US tax return, reporting only your worldwide income. Your NRA spouse generally does not file a US tax return unless they have US-sourced income.
   • Pros:
     • Your spouse’s worldwide income is generally not subject to US taxation or reporting (unless it’s US-sourced income).
     • Simplifies tax preparation as you only deal with your own financial information.
   • Cons:
     • You cannot claim your spouse as a dependent or take advantage of many tax credits and deductions that are available to joint filers.
     • Your tax rates are higher compared to Married Filing Jointly.
     • The Foreign Earned Income Exclusion (FEIE) and Foreign Tax Credit (FTC) might be limited to your income only.
     • You cannot contribute to an IRA on behalf of your non-US spouse.
   • Important Note: When filing MFS, you should write “NRA” in the space for your spouse’s Social Security Number (SSN) on your tax return.

1. Married Filing Jointly (MFJ): The Resident Alien Election
   • How it works: You can elect to treat your NRA spouse as a US resident for tax purposes for the entire tax year under IRC Section 6013(g). This election effectively treats your NRA spouse as a US tax resident for that year and all future years until the election is revoked or terminated.
   • Pros:
     • You can utilize the higher standard deduction and more favorable tax brackets available to married couples.
     • You may be eligible for various tax credits and deductions that are otherwise unavailable when filing MFS (e.g., Child Tax Credit, education credits).
     • Can be beneficial if your non-US spouse has little to no income, as it allows for income splitting and potentially lower overall tax.
     • Both spouses can qualify for the Foreign Earned Income Exclusion if they meet the eligibility criteria.
   • Cons:
     • Your NRA spouse’s worldwide income becomes subject to US taxation. This is a significant consideration if your spouse has substantial foreign income and assets.
     • Your NRA spouse will need a US Taxpayer Identification Number (TIN), either an SSN or an Individual Taxpayer Identification Number (ITIN).
     • This election, once made, applies to all subsequent tax years unless revoked or terminated. Revoking it can have long-term implications.
   • How to Make the Election: You make this election by attaching a statement to your joint tax return for the first year you wish for it to apply. The statement should include:
     • A declaration that one spouse is a US citizen or resident, and the other is an NRA.
     • A statement that you choose to treat the NRA spouse as a US resident for the entire tax year.
     • The name, address, and identification number (SSN or ITIN) of both spouses.
     • Both spouses must sign the return.
   • Obtaining an ITIN: If your NRA spouse doesn’t have an SSN, they’ll need to apply for an ITIN by filing Form W-7, Application for IRS Individual Taxpayer Identification Number. This form is typically submitted with your first joint tax return.

Essential Filing Requirements for US Citizens Married to a Non-US Spouse

Beyond choosing a filing status, several critical reporting requirements apply:

1. FBAR (FinCEN Form 114): Report of Foreign Bank and Financial Accounts
   • Requirement: If you (the US citizen) have a financial interest in or signature authority over foreign financial accounts, and the aggregate value of all those accounts exceeds $10,000 at any point during the calendar year, you must file an FBAR. This includes accounts solely in your non-US spouse’s name if you have signature authority, or jointly owned accounts.
   • Important: This is a separate filing with the Financial Crimes Enforcement Network (FinCEN), not the IRS. It’s due April 15 with an automatic extension to October 15.

2. Form 8938 (Statement of Specified Foreign Financial Assets)
   • Requirement: This form is filed with your income tax return (Form 1040) if your specified foreign financial assets exceed certain thresholds. These thresholds vary based on your filing status and whether you reside in the US or abroad.
   • Thresholds (for 2024 tax year, subject to change):
     • Living abroad:
       • Single / Married Filing Separately: Value over $200,000 on the last day of the tax year, or over $300,000 at any time during the year.
       • Married Filing Jointly: Value over $400,000 on the last day of the tax year, or over $600,000 at any time during the year.
     • Living in the US:
       • Single / Married Filing Separately: Value over $50,000 on the last day of the tax year, or over $75,000 at any time during the year.
       • Married Filing Jointly: Value over $100,000 on the last day of the tax year, or over $150,000 at any time during the year.
   • Note: Form 8938 covers a broader range of assets than FBAR, including foreign stocks, partnership interests, and certain foreign investment accounts not held in a financial institution.

3. Foreign Earned Income Exclusion (Form 2555)
   • If you (or both of you, if filing jointly and meeting the requirements) work abroad, you may qualify to exclude a portion of your foreign earned income from US taxation. You must meet either the Bona Fide Residence Test or the Physical Presence Test.

4. Foreign Tax Credit (Form 1116)
   • This credit allows you to reduce your US tax liability by the amount of income tax you paid to a foreign country. This is crucial for avoiding double taxation on income earned abroad.

5. Other Potential Forms
   • Depending on your specific financial situation, other forms may be required, such as:
     • Form 3520/3520-A: For interests in foreign trusts or receipt of gifts from foreign persons.
     • Form 5471: For ownership in certain foreign corporations.
     • Form 8621: For investments in Passive Foreign Investment Companies (PFICs).

Key Steps to File Your US Taxes Correctly

1. Determine Your Spouse’s US Tax Residency: This is the foundational step.
2. Choose Your Filing Status: Carefully weigh the pros and cons of Married Filing Separately vs. Married Filing Jointly, considering your combined income, assets, and future plans.
3. Obtain an ITIN for Your Spouse (If Filing Jointly): Start this process early as it can take time.
4. Gather All Worldwide Income and Financial Information: This includes your income and, if filing jointly, your spouse’s income and details of all foreign financial accounts.
5. Identify All Applicable Forms: Don’t just focus on Form 1040. Remember FBAR, Form 8938, and any other relevant information returns.
6. Consider Professional Assistance: Given the complexity, especially with the resident alien election and various foreign reporting requirements, seeking advice from a tax professional specializing in US expat and international tax is highly recommended. They can help you navigate the rules, minimize your tax burden, and ensure compliance.

People Also Ask (PAA)

Q: Does my non-US spouse need a Social Security Number (SSN) to be included on my US tax return? A: If you choose to file Married Filing Jointly, your non-US spouse will need an SSN or an Individual Taxpayer Identification Number (ITIN). If they are not eligible for an SSN, they must apply for an ITIN. If you file Married Filing Separately, you can simply write “NRA” in the spouse’s SSN field.

Q: If I file Married Filing Separately, does my non-US spouse still need to report their foreign bank accounts to the IRS? A: Generally, no. If your non-US spouse is a non-resident alien and has no US-sourced income, they are not subject to US tax laws and do not typically have US filing requirements, including FBAR or Form 8938, for accounts solely in their name. However, if you (the US citizen) have signature authority over their accounts, you may still need to report them on your FBAR.

Q: Can I claim my non-US spouse as a dependent? A: No, you generally cannot claim your spouse as a dependent. The ability to claim exemptions for spouses was eliminated with the Tax Cuts and Jobs Act (TCJA) of 2017. However, choosing Married Filing Jointly allows you to benefit from more favorable tax brackets and a higher standard deduction.

Frequently Asked Questions (FAQs)

Q: What is the “resident alien election” under IRC Section 6013(g)? A: This election allows a US citizen or resident alien to treat their non-resident alien spouse as a US resident for the entire tax year. This enables the couple to file a joint income tax return, but it means the non-resident alien spouse’s worldwide income becomes subject to US taxation.

Q: How does the Foreign Account Tax Compliance Act (FATCA) affect me if I’m married to a non-US spouse? A: FATCA is largely implemented through Form 8938. If you meet the filing thresholds for Form 8938 (as a US citizen), you must report your specified foreign financial assets. If you file jointly, the thresholds are higher, and you report both spouses’ combined specified foreign assets on one Form 8938.

Q: What if my non-US spouse earns income from US sources? A: If your non-US spouse earns income from US sources (e.g., US rental property, US-based dividends, or working in the US), that income is subject to US tax regardless of your filing status. They may need to file their own Form 1040-NR, U.S. Nonresident Alien Income Tax Return, unless you elect to treat them as a resident and file jointly.

Q: Can I revoke the resident alien election in a future year? A: Yes, the election can be revoked under certain circumstances or automatically terminates (e.g., divorce, death). However, once revoked, you generally cannot make the election again in future years. It’s a significant decision that should be made with careful consideration of its long-term tax implications.

Q: Where can I find the most up-to-date information on US tax rules for expats? A: The IRS website (irs.gov) is the primary source for official information. Look for publications such as Publication 54 (Tax Guide for U.S. Citizens and Resident Aliens Abroad) and Publication 519 (U.S. Tax Guide for Aliens). However, interpreting these rules, especially with international complexities, often benefits from professional guidance.

Conclusion

Filing US taxes when married to a non-US spouse requires careful consideration of filing status, potential tax implications, and various reporting obligations. While the options can seem daunting, understanding the key rules and, when necessary, engaging with qualified tax professionals, can help ensure compliance and optimize your tax position, allowing you to focus on your life together, wherever you are in the world.