US Tax Guide for Dual Citizens Living in Mexico

Dual citizens (US + Mexico) face unique US tax challenges. As US citizens, they owe US tax on worldwide income regardless of where they live. Mexico's worldwide income taxation and the US-Mexico tax treaty create additional complexity. FileAbroad helps dual citizens in Mexico navigate FEIE, FBAR, and the cross-border questions that complicate filing.

Key Tax Issues for Dual Citizens in Mexico

• Worldwide US taxation: US citizens owe US tax on worldwide income, even if they live in Mexico and are Mexican citizens.
• Mexican tax residency: If you spend more than 183 days in Mexico or your center of vital interests is there, you are a Mexican tax resident. You may owe tax to both countries.
• FEIE: Dual citizens can claim FEIE on foreign earned income if they have a foreign tax home and meet the physical presence or bona fide residence test.
• FTC: Dual citizens can claim FTC for Mexican tax paid on income that is also taxed by the US.
• Temporary vs permanent resident: Different visa types may have different Mexican tax implications.
• Totalization agreement: There is no U.S.-Mexico Social Security agreement in force.

FEIE vs FTC for Dual Citizens in Mexico

FEIE is generally better for dual citizens in their first years abroad or with income below the FEIE limit. FTC is generally better for standard Mexican tax residents paying high Mexican rates (up to 35%).

FBAR & Reporting for Dual Citizens in Mexico

Mexican bank accounts (BBVA México, Santander México, Banorte) and AFORE pension accounts are reportable on FBAR if the aggregate value across all foreign accounts exceeds $10,000.

Common Mistakes Dual Citizens Make in Mexico

1. Not filing US tax returns — US citizens owe US tax on worldwide income regardless of where they live.
2. Not reporting Mexican bank accounts on FBAR — All foreign accounts are reportable.
3. Not understanding temporary vs permanent resident tax implications — Different visa types may have different Mexican tax treatment.
4. Not claiming FEIE or FTC — These tools can significantly reduce your US tax.

When to Get Professional Help

You should consider professional help if you have foreign accounts exceeding $10,000 or complex income situations.

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FileAbroad explains U.S. federal tax and U.S. international information-reporting consequences of documented foreign facts. It does not provide foreign-country legal or tax representation, valuation opinions, banking or remittance advice, or advice on what a foreign authority will accept.

Scope statement reviewed 2026-08-30 · FileAbroad product/content owner