If you have Mexican bank accounts, you almost certainly have FBAR and FATCA filing requirements. The penalties for non-filing are severe — $10,000 minimum per violation. Here's exactly what you need to report and when.
FBAR (Report of Foreign Bank and Financial Accounts, FinCEN Form 114) is required if you have signature authority over, or a financial interest in, foreign financial accounts with an aggregate value exceeding $10,000 at any point during the calendar year. If you have a Mexican checking account with $8,000 and a savings account with $3,000, the combined $11,000 triggers the requirement — even if neither account individually exceeds $10,000.
Bank accounts (checking, savings), investment accounts (fondos de inversión), Afore retirement accounts, insurance policies with cash value, accounts where you have signature authority (like a business account), and certain digital wallets. The guide includes a complete checklist of Mexican financial products that require FBAR reporting.
FBAR is due April 15 with an automatic extension to October 15. There is no form to file for the extension — it's automatic. Penalties for non-willful failure to file: up to $16,987 per account per year (2026, adjusted annually for inflation). Willful non-filing: $100,000 or 50% of the account balance, whichever is greater, plus potential criminal prosecution. These are among the harshest penalties in the US tax code.
FATCA (Foreign Account Tax Compliance Act) requires you to report foreign financial assets on Form 8938, filed with your tax return. For Americans living abroad, the thresholds are higher than FBAR: $200,000 on the last day of the year or $300,000 at any point during the year (single filers). FATCA covers a broader range of assets including foreign stock/securities, partnership interests, and certain foreign life insurance.
You may need to file both FBAR and Form 8938 — they are separate requirements with separate penalties.
The IRS offers the Streamlined Filing Compliance Procedures for taxpayers who can certify their non-compliance was non-willful (you didn't know or were confused about the requirement). For Americans living abroad, this program waives all penalties. You file 3 years of amended tax returns and 6 years of FBARs. The guide walks you through the entire process step by step. Full tax overview →
Yes. Under the FATCA intergovernmental agreement between the US and Mexico, Mexican banks report account information of American account holders to Mexico's SAT, which shares it with the IRS through the Common Reporting Standard (CRS) and FATCA pathways. The IRS already knows about your Mexican accounts — the question is whether you've reported them properly.
The rules are evolving. FinCEN has indicated that foreign crypto exchange accounts will be subject to FBAR reporting, but enforcement guidance is still developing. If you use a Mexican exchange like Bitso, it's safest to include it on your FBAR. The guide covers the current state of crypto reporting requirements for Americans abroad.
FBAR itself can be filed for free through FinCEN's BSA E-Filing System. If you use a CPA, FBAR preparation typically adds $100-300 to your tax preparation fees. If you also need Form 8938, that's an additional $200-400. Compared to the $10,000+ penalty for non-filing, the cost of compliance is trivial. Read about Mexican banking →
Educational content only — not tax or legal advice. This guide is an orientation document. Tax law is complex and individual situations vary. Always consult a qualified US expat CPA and a licensed local attorney before making financial, visa, or property decisions. Figures are verified as of the date shown and subject to change. Full disclaimer →