US Expat Taxes in Mexico

Residence and the U.S. filing starting point in Mexico

A U.S. citizen or green-card holder generally continues to analyze U.S. worldwide-income filing while living in Mexico. Local residence is a separate question. Start a year-by-year timeline that identifies arrival, visa or residence status, days present, homes available, work performed, family location, local registration, and departure or renewal dates. Mexico's proximity to the US makes the 330-day physical presence test manageable, but frequent border crossings must be carefully documented. Days spent in the US for business or personal trips count against your 330-day requirement. Obtaining a Temporary or Permanent Resident Visa strongly supports bona fide residence. Mexican tax registration (RFC number) and local employment further establish residency intent. Do not treat a visa label or a local tax number as a substitute for the U.S. return analysis.

FEIE and earned income for Americans in Mexico

The Foreign Earned Income Exclusion applies only to qualifying earned income and requires the relevant tax-home and presence or residence test. Salary, self-employment receipts, and services performed abroad need a work-location record. Pensions, Social Security, dividends, interest, rent, and capital gains need separate treatment. Track every trip to the United States, including partial days where the current rules count them, and preserve the residence evidence behind a bona fide claim. Compare the FEIE with the Foreign Tax Credit rather than assuming the exclusion is best.

The Mexico local tax system and the U.S. return

Mexico taxes residents on worldwide income. Progressive rates from 1.92% to 35%. The local result may depend on residence, source, remittance, employment, business activity, and the tax year. Preserve the local registration, return, assessment, payment receipt, withholding records, and any refund. A local exemption or reduced rate can change the foreign taxes available for a U.S. credit; it does not generally turn off U.S. citizenship-based reporting.

Treaty and social-security questions for Mexico

A U.S.–Mexico income-tax treaty, signed in 1992, is in force. Any treaty benefit should be checked against the current treaty text, protocol, saving clause, and residence facts. No U.S.–Mexico Social Security totalization agreement is currently listed as in force. Do not use a treaty headline to decide a pension, employment, self-employment, or state result without identifying the exact article and tax year.

Banks, accounts, and FATCA in Mexico

Mexican bank and financial accounts held at Mexican institutions may be reportable on FinCEN 114 when the aggregate maximum value of your reportable foreign financial accounts exceeds $10,000 at any point during the year. This includes peso and dollar-denominated accounts, as well as investment accounts at Mexican brokerages. Account type, ownership or authority, and the applicable exceptions still matter. Mexico signed a Model 1 IGA with the US in 2012. Mexican banks actively report US account holders' information to the SAT, which shares it with the IRS. Expect to provide your SSN or ITIN when opening accounts. Build one account inventory with the legal owner, joint owners, signature authority, institution, account type, currency (MXN), maximum value, year-end value, and closure date. Compare it with the current FBAR and Form 8938 instructions. A foreign bank’s FATCA request is a documentation issue, not automatically an IRS assessment. Keep bank correspondence and secure records separate from the U.S. income calculation.

Income source and work-location records

For an employee, contractor, or business owner in Mexico, record where services were physically performed, which entity paid, where the customer or employer is located, and where the work was managed. A Mexico payer does not automatically make every item foreign-source, and a U.S. payer does not automatically make services U.S.-source. Keep contracts, invoices, payroll, travel records, foreign withholding, local filings, and entity books. Separate personal income, business income, distributions, and investment returns before applying a credit or exclusion.

Pensions, funds, and savings products from Mexico

Ask whether a local pension, insurance policy, mutual fund, ETF, savings plan, or employer account is a pension arrangement, trust, foreign corporation, or another product for U.S. purposes. The local label may not answer the U.S. classification. Preserve plan documents, investment menus, annual statements, distributions, beneficiary records, and any annual information statement. If the product contains foreign pooled funds, screen Form 8621 and PFIC questions. If it is a pension, review treaty and Form 8938 questions separately from current income.

Residence routes and documentation in Mexico

Common residence routes in Mexico include Temporary Resident Visa, Permanent Resident Visa. For each route, preserve the application, approval, renewal, local address, work permission, health coverage, and evidence of actual use. A residence permit may support a bona fide-residence analysis, but the taxpayer’s conduct and full-year facts still matter. If the taxpayer is a digital nomad, retiree, student, contractor, or family member, connect the visa record to the actual income and household timeline rather than relying on a visa marketing description.

Common Mexico pitfalls to test before filing

These are screening prompts, not conclusions. For each one, identify the year, owner, transaction, document, and form affected. Add gifts, inheritances, foreign entities, local funds, rental property, state ties, and IRS or bank notices to the same inventory. The country-specific articles on this site can help frame these questions; use them, then check the current primary sources.

• Failing to track border crossings accurately, which can disqualify FEIE physical presence claims
• Not registering with the SAT (Mexican tax authority) when required as a tax resident, triggering penalties
• Overlooking Mexican tax obligations on worldwide income once you become a Mexican tax resident (183+ days)
• Missing the additional June 15 automatic extension deadline and not filing for the October extension
• Ignoring state-level payroll taxes (ISN) if employing others or working as a contractor in Mexico

A records-first annual workflow for Mexico

Collect identity, residence, travel, income, account, pension, entity, local-tax, state, prior-return, and notice records. Classify each item, calculate the federal return, reconcile the foreign tax credit or FEIE, review FBAR and Form 8938 overlap, and compare the U.S. return with the local return. Save the final return, acceptance records, payment evidence, conversion rates, and unresolved issues for next year. Current official source material to check includes the current IRS, Treasury, and local authority sources. A paid consultation can turn the map into a written preparation scope before work begins.