Yes, expats do pay taxes in Mexico once they cross into tax residency, and the line arrives faster than most newcomers expect. Spend more than 183 days in Mexico during a calendar year and the Servicio de Administración Tributaria (SAT) treats you as a resident, which means Mexican income tax on your worldwide income at progressive rates running from 1.92% to 35%. Non-residents still owe Mexican tax, but only on income sourced inside the country.
When You Become a Mexican Tax Resident
Mexico’s Federal Tax Code offers two ways to fall into tax residency. The first is a day count: more than 183 days in the country during a calendar year, consecutive or not. A stretch in the winter, a few weeks in spring, a return trip in summer, and you’re over.
The second is the “center of vital interests” test. You qualify if more than 50% of your annual income comes from Mexican sources, or if your main professional base sits in Mexico. That catches people who carefully limit their days but still run a business or earn most of their money in country.
A Residency Visa Is Not the Same as Tax Residency
Immigration status and tax status run on separate tracks. Holding a temporary or permanent resident visa from the National Immigration Institute does not by itself make you a Mexican tax resident, and plenty of visa holders split their time abroad and never cross the 183-day threshold. The reverse also happens: a long tourist stay that overshoots 183 days can make you a tax resident with no residency visa in hand. Confusing the two is one of the more common mistakes expats make.
What Mexico Taxes
Once you’re a tax resident, the SAT taxes your worldwide income. That means foreign pensions, remote-work salary from an overseas employer, dividends and capital gains from brokerage accounts abroad, and rent from property you own in other countries all belong on your Mexican return.
Non-residents have a narrower obligation: only Mexican-source income. That includes wages for work performed in Mexico, income from a permanent business establishment there, rent from Mexican property, dividends from Mexican corporations, and capital gains on Mexican real estate.1Servicio de Administración Tributaria. How to Pay Taxes
Rental Income
Owning Mexican property creates a tax bill whether you live in the country or not. Residents fold rent into their annual return and pay ISR at the normal progressive rates. Non-residents face a flat 25% withholding on gross rental income with no deductions allowed, usually withheld and remitted by the tenant or property manager. When the tenant is also a foreign resident, the landlord has to calculate and pay the tax directly within 15 days of receiving the rent.2Servicio de Administración Tributaria. Real Estate Leasing
Income Tax Rates for 2026
Mexico’s income tax, the Impuesto Sobre la Renta (ISR), is progressive. Each slice of income sits in its own bracket, and only the excess above each threshold is taxed at the higher rate. Residents’ 2026 brackets:
- Up to MXN 10,135: 1.92%
- MXN 10,135 to 86,022: 6.40%
- MXN 86,022 to 151,176: 10.88%
- MXN 151,176 to 175,736: 16.00%
- MXN 175,736 to 210,404: 17.92%
- MXN 210,404 to 424,354: 21.36%
- MXN 424,354 to 668,840: 23.52%
- MXN 668,840 to 1,276,926: 30.00%
- MXN 1,276,926 to 1,702,568: 32.00%
- MXN 1,702,568 to 5,107,704: 34.00%
- Over MXN 5,107,704: 35.00%
Earn MXN 500,000 and you don’t pay 23.52% on the whole amount. You pay 1.92% on the first slice, 6.40% on the next, and up the ladder from there, so your effective rate lands well below the top bracket you touch.
Non-Resident Employment Income
Non-residents earning employment income in Mexico use a simpler three-tier table for 2026:
- Up to MXN 125,900: exempt
- MXN 125,900 to 1,000,000: 15%
- Over MXN 1,000,000: 30%
The exempt amount applies to employment income earned during any rolling 12-month period. Other non-resident income types, like rent or capital gains, use their own rate structures rather than this table.
Deductions That Lower the Bill
Mexican individual taxpayers can deduct a limited list of personal expenses, and every deductible expense has to be paid electronically. Cash payments never count.
- Unreimbursed medical, dental, nutritionist, and psychologist costs for you and your dependents, plus health insurance premiums.
- Tuition from preschool through high school, with annual per-student caps from MXN 14,200 to MXN 24,500 depending on grade level. University tuition does not qualify.
- Donations to SAT-authorized charities, capped at 7% of the prior year’s taxable income.
- The inflation-adjusted portion of home mortgage interest, subject to a loan value cap.
- Voluntary contributions to qualified private retirement accounts or Mexico’s social security retirement system, within set limits.
All personal deductions except medical and education expenses sit under an overall annual cap: the lesser of 15% of your total income or MXN 213,973 for 2026. Higher earners can’t simply stack deductions without limit.
Filing a Mexican Tax Return
Getting an RFC and e.firma
Before filing anything, you need two credentials from the SAT. The Registro Federal de Contribuyentes (RFC) is your taxpayer ID.3SAT: Portal de Trámites y Servicios del SAT. Inscripcion y Avisos al Registro Federal de Contribuyentes RFC para Personas You apply in person at a SAT office with a printed CURP (Mexico’s general population ID, available online), your residency card, and your passport. Appointments book up quickly.
You collect the e.firma, a digital signature on a USB drive, during the same visit. Without both, the online filing portal is closed to you, so schedule the appointment well before any deadline.
Deadlines
The individual return covers the calendar year and is due April 30 of the following year. For 2026 income, the return is due April 30, 2027. If you’re self-employed or receive income without tax withheld at the source, you also owe monthly provisional ISR payments by the 17th of the following month. Miss those and penalties and interest start compounding well before the annual filing.
Submitting the Return
Filing runs through the SAT’s online portal, authenticated with your e.firma. The system pre-fills some data from employer and bank reports, but foreign income and most deductions you’ll enter yourself. Once you confirm the return, the portal generates an Acuse de Recibo, your official receipt.4Servicio de Administración Tributaria. Reimprime tus Acuses de Declaraciones Presentadas Save it. If you owe tax, the portal also produces a Línea de Captura, a payment voucher with a reference number and firm payment deadline. Pay through a supported bank’s online platform or bring the printed voucher to a branch. Miss the date on the voucher and interest starts immediately.
Penalties for Not Filing
The SAT imposes escalating fines for late filing, incomplete returns, and unpaid tax, and monthly interest (recargos) runs on any unpaid balance. Because the interest accrues monthly rather than annually, it climbs faster than many expats expect.
Beyond the money, the SAT can restrict your ability to obtain or renew your RFC, block tax compliance certificates that some banking and immigration transactions require, and in serious cases refer matters for criminal investigation. The usual trigger for trouble isn’t fraud. It’s an expat who didn’t realize they’d become a tax resident and never filed. Coming forward voluntarily generally reduces the penalty compared with waiting for the SAT to find you.
Avoiding Double Tax with the US or Canada
Mexico has income tax treaties with dozens of countries, including the United States and Canada. The treaties assign primary taxing rights over specific income categories (wages, dividends, pensions, royalties) so the same dollar isn’t fully taxed twice.5Internal Revenue Service. United States Income Tax Treaties – A to Z6Canada.ca. Convention Between the Government of Canada and the Government of the United Mexican States
The main relief mechanism is the foreign tax credit. Tax paid to Mexico on income your home country also taxes generally becomes a credit on the home-country return, so your combined burden tracks the higher of the two rates rather than stacking. Keep your Acuse de Recibo, payment receipts, and annual summaries organized; you’ll need them to claim the credit.
US Social Security
Under Article 19 of the US-Mexico treaty, Social Security benefits are taxable only in the country paying them. US Social Security collected in Mexico is taxed only by the United States, and it does not go on your Mexican return as taxable income.7Internal Revenue Service. Convention Between the Government of the United States of America and the Government of the United Mexican States Confirm with a cross-border tax professional that your specific pension or annuity income falls under the same provision.
US Filing Requirements That Don’t Go Away
US citizens and permanent residents owe US tax on worldwide income no matter where they live. Moving to Mexico doesn’t end IRS obligations; it adds to them. Several exclusions and credits reduce or eliminate the double bill, but you have to claim them by filing.
Foreign Earned Income Exclusion
The Foreign Earned Income Exclusion lets qualifying US expats exclude up to $132,900 of foreign earned income for 2026, or up to $265,800 combined for married couples where both work abroad and both qualify. A separate housing exclusion covers qualifying housing costs above a base amount, capped at $39,870 for 2026.8Internal Revenue Service. Figuring the Foreign Earned Income Exclusion Qualifying requires the bona fide residence test (established residence in Mexico for a full tax year) or the physical presence test (330 full days in a foreign country during a 12-month period).
The exclusion covers earned income only: salaries and self-employment. Pensions, investment returns, rent, and Social Security don’t qualify, and for those you rely on the foreign tax credit.
FBAR
If the combined value of your foreign financial accounts exceeds $10,000 at any point during the year, you file a Report of Foreign Bank and Financial Accounts (FBAR) with the Financial Crimes Enforcement Network. Mexican checking, savings, and investment accounts all count toward the $10,000 aggregate. The FBAR is due April 15 with an automatic extension to October 15.9Internal Revenue Service. How to Report Foreign Bank and Financial Accounts
Penalties are steep. Non-willful violations run up to $10,000 per account per year. Willful violations jump to the greater of $100,000 or 50% of the account balance. The IRS pursues FBAR cases actively, and unfamiliarity with the rule has not historically worked as a defense.
Form 8938 (FATCA)
Form 8938 reporting under FATCA kicks in at higher thresholds. Single filers living outside the United States file if foreign financial assets exceed $200,000 on the last day of the year or $300,000 at any point during it. For married couples filing jointly, those thresholds double to $400,000 and $600,000. Form 8938 travels with your federal income tax return rather than as a separate filing.9Internal Revenue Service. How to Report Foreign Bank and Financial Accounts
The FBAR and Form 8938 overlap in what they cover but are separate filings. Doing one doesn’t excuse the other, and many expats in Mexico owe both. The penalties on each side are large enough that this is one area where paying a cross-border tax specialist tends to save more than it costs.