US Expat Taxes When Retiring in Mexico: What You Actually Owe

Moving to Mexico doesn’t change your US tax obligations. The US taxes its citizens on worldwide income regardless of where they live — one of only two countries in the world that operates this way. Here’s what you actually owe as a US retiree or expat in Mexico, and where people most often get it wrong.

The Fundamental Rule: US Citizens Are Taxed Everywhere

Living in Mexico does not end your US federal tax liability. You still file a Form 1040 every year. You still owe US taxes on Social Security, pension distributions, 401(k)/IRA withdrawals, capital gains, dividends, and interest — regardless of where those funds originate or where you live. This is non-negotiable and applies even if you’ve lived in Mexico for decades.

What the Foreign Earned Income Exclusion (FEIE) Does — and Doesn’t — Cover

The FEIE (Form 2555) lets qualifying Americans exclude up to approximately $126,500 (2024, indexed annually) of foreign earned income from US taxation. The operative word is earned: wages, salaries, and self-employment income from work performed outside the US.

The FEIE does NOT apply to:

• Social Security benefits
• Pension or annuity distributions
• 401(k)/IRA withdrawals
• Interest, dividends, or capital gains
• Rental income from US property

Most retirees in Mexico live on exactly these types of income. The FEIE, often cited as the solution to US expat taxes, is largely irrelevant for the typical retiree in Mexico whose income is passive or retirement-sourced rather than earned.

What Mexico Taxes You On

Mexico taxes residents on Mexico-source income. If your income consists of US Social Security, a US pension, and US investment distributions — all of which originate outside Mexico — you likely owe little or no Mexican income tax, even as a Mexican tax resident (180+ days in Mexico per year).

If you have Mexico-source income — rental income from Mexican property, a local business, or employment in Mexico — that income is subject to Mexican income tax (ISR). Mexico’s tax rates for residents range from 1.92% to 35% on a progressive scale.

The US-Mexico Tax Treaty

The US and Mexico have a tax treaty that prevents most double-taxation. If Mexico taxes income that is also taxable in the US, you can generally claim the Foreign Tax Credit (Form 1116) to offset the Mexican tax against your US tax bill. For most retirees with primarily US-source income living in Mexico, the treaty rarely applies in practice — because Mexico isn’t taxing your US-source income in the first place.

State Tax: The Hidden Liability

Moving to Mexico does not automatically end your state income tax liability. States determine your residency based on domicile, not physical presence. California and New York are particularly aggressive — they will continue taxing you if you maintain any significant ties (a home, a bank account, a driver’s license, voter registration). To end California tax liability, you must formally establish non-residency: surrender your CA driver’s license, close CA-only bank accounts, sell or lease your CA property, update your mailing address everywhere, and file a part-year return. Texas and Florida residents have no state income tax to worry about.

FBAR and FATCA Reporting

If you have a Mexican bank account that at any point during the year exceeds $10,000 USD in value, you are required to file an FBAR (FinCEN Form 114) by April 15. Separate from the FBAR, FATCA (Form 8938) reporting applies at higher thresholds. Failure to file carries severe penalties — up to $100,000 or 50% of account value per year for willful violations. This is a compliance requirement, not optional. See our complete FBAR/FATCA guide for Mexico expats.

The Bottom Line for US Retirees in Mexico

If your retirement income consists of US Social Security and pension distributions: you will likely owe US federal tax on that income (same as if you lived in the US), pay little to no Mexican tax (since Mexico doesn’t tax your US-source income), and need to proactively address state tax if you came from a high-tax state. Moving to Mexico reduces your cost of living significantly but does not reduce your US federal tax bill.

If tax minimization is a primary goal, Mexico is not the optimal jurisdiction. Countries with territorial taxation — Panama and Paraguay — offer cleaner structures for Americans with non-US income sources. See territorial tax vs Mexico.

Related Resources

• FBAR and FATCA: What Mexico Expats Need to Know
• Do You Become a Mexican Tax Resident?
• Can Moving to Mexico Eliminate Your State Income Tax?
• Territorial Tax Countries vs Mexico