Does Mexico Tax US Retirement Income?

Generally, no. Mexico does not tax US Social Security, IRA, 401(k), or pension income as long as you remain a US tax resident & qualify under the US-Mexico tax treaty. If you become a Mexican tax resident, the picture changes & you need proper planning. Here is the honest breakdown.

The US-Mexico Tax Treaty

The treaty between the United States & Mexico (in force since 1994) allocates taxing rights between the two countries to prevent double taxation. For retirees, the most important provisions cover:

• Social Security: Taxable only in the country paying it (so the US, for US Social Security).

• Pensions: Generally taxable only in the country of residence, with carve-outs for government pensions.

• IRA / 401(k) distributions: The country of the recipient's tax residence generally has primary taxing rights, but the source country may also tax with treaty credit relief.

The practical effect: most US retirees in San Miguel who maintain US tax residency continue to pay US taxes on their retirement income & owe nothing additional to Mexico on that same income.

What "Tax Residency" Actually Means

Mexico considers you a tax resident if your "center of vital interests" is in Mexico, typically meaning more than 50% of your income comes from Mexican sources, or your primary home & professional life are in Mexico. Most US retirees living on US-source retirement income, even if physically present in Mexico year-round, do not meet this test.

However, residency status is fact-specific. Long-term Mexican residents who have built business or rental activity in Mexico may cross the threshold. A cross-border tax advisor is the right person to evaluate your specific case.

If You Do Become a Mexican Tax Resident

A Mexican tax resident is taxable on worldwide income. The treaty still protects you from double taxation through foreign tax credits, but the compliance shifts: you would file in both countries & coordinate the credits. This is manageable with proper advice but is not something to set up casually.

US Side: You Still File a US Return

US citizens & green card holders file a US tax return on worldwide income regardless of where they live. Living in Mexico does not change that. The Foreign Earned Income Exclusion (FEIE) does not apply to retirement income, only to earned income from work, so the relief mechanism is usually foreign tax credits rather than exclusion.

What About Mexican-Source Income?

If you rent out a property in Mexico, that income is Mexican-source & taxable in Mexico (ISR) regardless of your tax residency. You also owe US tax on it, with a foreign tax credit for the Mexican tax paid. The taxes on buying a house in Mexico guide covers this in more detail.

State Tax: A Quiet Risk

Some US states (notably California, New Mexico, Virginia, South Carolina) are aggressive about claiming continued state tax residency even after you move abroad. If you are leaving one of those states, formally severing state residency (driver's license, voter registration, no in-state home) matters as much as anything else.

The Bottom Line for Most San Miguel Retirees

You continue to pay US federal tax (& possibly state tax) on Social Security, pensions & retirement-account distributions. Mexico typically takes nothing additional on that income. Mexican-source income (rental, business) is taxable in Mexico & creditable against US tax.

For broader cost-of-living context, see how much money to retire. For the social-security-specific picture, the collect Social Security in San Miguel guide goes deeper.

When you are planning a retirement move, a one-time consult with a US-Mexico cross-border tax advisor is the highest-ROI hour you will spend. Reach out if you want introductions to advisors who work with international retirees here.