Americans who own real estate south of the border face a two-country tax life: Mexico taxes the property directly, and the United States taxes you on the same income and requires separate reporting on top of it. The tax implications of owning property in Mexico for Americans fall into four moments — purchase, holding, renting, and sale — plus a set of US information returns that exist independently of whether you owe any tax at all. The US-Mexico income tax treaty and the foreign tax credit keep you from paying the same income tax twice, but the reporting penalties on the US side can be brutal if you miss them.
What You Pay When You Buy
The main tax at closing is the Impuesto Sobre Adquisición de Inmuebles (ISAI), a state-level acquisition tax that ranges from roughly 2% to 5% of the property’s assessed value. The Notario Público who handles the closing calculates it, collects it, and remits it along with notary fees and registry charges. Keep every receipt. These costs become part of your cost basis for capital gains on both the Mexican and US sides later, and Mexican law only counts documented costs backed by valid electronic invoices (CFDIs).
Mexico’s 16% value-added tax (IVA) does not apply to most residential purchases. Both the sale of residential housing and construction services for residential housing are exempt.1PwC Worldwide Tax Summaries. Mexico Corporate – Other Taxes Commercial property is a different story — the full 16% IVA applies to those transactions.
The Fideicomiso If You Buy Near the Coast or Border
Foreigners cannot hold direct title inside Mexico’s restricted zone, which covers all land within 50 kilometers of the coast and 100 kilometers of an international border. Instead, a Mexican bank holds legal title through a trust called a fideicomiso, and you retain full rights to use, rent, sell, or pass on the property. The trust runs 50 years and renews indefinitely. Setup runs a few thousand dollars, and annual trustee fees generally fall between $500 and $800. The setup fee gets added to your acquisition cost basis. This structure matters twice — once at closing, and again on your US return, because the IRS treats a fideicomiso as a foreign trust with its own filing regime.
Annual Property Tax (Predial)
Predial is Mexico’s local property tax, assessed on cadastral value rather than market value, and it tends to be low by US standards. Many municipalities offer a 5% to 15% discount for paying in January or February. Predial is deductible against rental income on the Mexican side and, if the property generates rent, as a rental expense on your US Schedule E. It is not a creditable foreign income tax for US purposes, because it is not a tax on net income.
Renting the Property Out: Mexican Side
Rental income is subject to Mexican income tax (ISR). Before you can collect rent legally, you register with the SAT and obtain an RFC taxpayer ID, which is what allows you to issue the electronic CFDI invoices Mexican law requires for every rental transaction. Filings are monthly for ISR and any IVA collected, with an annual return on top. Working with a Mexican accountant (contador) is essentially required to stay compliant, and the fee is deductible if you itemize.
Blind Deduction or Itemized
You pick one of two methods for the full tax year:
- The blind deduction (deducción ciega) lets you subtract a flat 35% of gross rental income without documenting anything, plus your Predial payments on top.2Justia México. Ley de Impuesto Sobre la Renta – Titulo IV – Capitulo III
- Itemized deductions cover actual documented expenses: Predial, maintenance, mortgage interest, insurance, professional fees, and depreciation of the structure. Every expense needs a valid CFDI.
If your real costs run above 35% of gross income, itemize. If not, take the blind deduction.
IVA on Furnished and Short-Term Rentals
Long-term unfurnished residential leases are exempt from IVA. Furnished rentals and short-term vacation rentals are not — you charge tenants 16% on top of rent, collect it, and remit it to the SAT. Properties in Mexico’s northern and southern border zones may qualify for a reduced 8% rate.
Renting the Property Out: US Side
The US taxes citizens and residents on worldwide income, so your Mexican rental income also goes on your US return — specifically Schedule E of Form 1040.3Internal Revenue Service. About Schedule E (Form 1040), Supplemental Income and Loss Convert pesos to dollars at the exchange rate when the income was received or accrued.4Internal Revenue Service. Foreign Currency and Currency Exchange Rates
The depreciation rule for foreign property is where owners most often go wrong. US residential rentals depreciate over 27.5 years. Foreign residential rentals must use the Alternative Depreciation System (ADS), which stretches the recovery period to 30 years.5Office of the Law Revision Counsel. 26 US Code 168 – Accelerated Cost Recovery System It is not an election. Applying the 27.5-year schedule to a Mexican property is an error the IRS can catch and recalculate on audit. Your depreciation basis starts with the original purchase price in dollars, converted at the exchange rate on the acquisition date, with land value stripped out because land is not depreciable. The US does not allow the inflation indexing Mexico applies.
Selling: Mexican Capital Gains
Capital gains on sale are taxed under the ISR. Your adjusted cost basis is the original purchase price, indexed upward for inflation using official SAT factors, plus documented closing costs and any structural improvements. Every cost has to be backed by a CFDI. Owners who paid contractors in cash without invoices discover at closing that those renovations do not count, and the taxable gain balloons.
As a non-resident seller, you choose between two methods:
- 25% of gross proceeds — a flat tax on the entire sales price with no deductions, no basis, and no indexing.
- 35% of net gain — tax on profit only, after subtracting your inflation-adjusted basis, closing costs, and documented improvements. Requires presenting all CFDIs to the Notario.6PwC Worldwide Tax Summaries. Mexico – Individual – Taxes on Personal Income
The Notario Público withholds the tax from your sale proceeds and remits it to the SAT before the title transfers. You never write a check; the tax comes off the top.
The Mexican Primary Residence Exemption
If the property served as your primary home in Mexico, you may exclude gain up to 700,000 UDIs (roughly 5 to 6 million pesos at current values). You need utility bills in your name to prove residency and a temporary or permanent resident card. The exemption is available once every three years. Gain above the 700,000-UDI cap is taxed under whichever method you selected.
Selling: US Capital Gains
You calculate the US gain independently. Start with the dollar-converted purchase price at the acquisition-date exchange rate, add improvements (also converted at the exchange rates when paid), subtract accumulated depreciation, and compare to your dollar-converted sale proceeds. Because the US does not allow inflation indexing, the US gain and the Mexican gain will almost always be different numbers.
Section 121 lets you exclude up to $250,000 of gain ($500,000 married filing jointly) if you owned and used the home as your principal residence for at least two of the five years before sale.7Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence The statute has no US-location requirement, so it applies to a Mexican home that genuinely was your primary residence. Usable once every two years. Between Section 121 on the US side and the 700,000-UDI exemption on the Mexican side, a lot of gain can be sheltered, but the qualification rules do not overlap and you have to meet each separately.
The Foreign Tax Credit Ties It Together
The foreign tax credit (FTC), claimed on Form 1116, is what keeps you from paying US tax on income Mexico already taxed.8Internal Revenue Service. Foreign Tax Credit The Mexican ISR you pay on rental income or capital gains is creditable against the US tax on that same foreign-sourced income. The credit is capped at the US tax that would otherwise be due on that income, so it can zero out a liability but not produce a refund by itself. If Mexican tax on a sale exceeds your US liability on the gain, the excess can be carried back one year or forward up to ten.
Not every Mexican tax qualifies. Only foreign income taxes are creditable. Predial and ISAI do not qualify because they are not taxes on net income.9Internal Revenue Service. Publication 514 (2025), Foreign Tax Credit for Individuals Predial gets deducted as a rental expense on Schedule E; ISAI gets capitalized into your US cost basis. Article 24 of the US-Mexico income tax treaty confirms the credit framework, and Article 13 confirms that Mexico has the first right to tax gains from Mexican real property.10Internal Revenue Service. United States – Mexico Income Tax Convention
The Fideicomiso Trust Reporting Trap
This is the piece that catches Americans by surprise. The IRS treats a Mexican fideicomiso as a foreign trust, which triggers annual Form 3520 and Form 3520-A filings.11Internal Revenue Service. About Form 3520, Annual Return to Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts Revenue Procedure 2020-17 exempted certain foreign retirement and savings trusts, but a residential land trust does not qualify.12Internal Revenue Service. Revenue Procedure 2020-17 Most cross-border tax advisers file both forms every year for fideicomiso owners.
Penalties are severe. The initial penalty for late or missing Form 3520 is the greater of $10,000 or 35% of the gross reportable amount, which for a property trust is generally the value of the trust assets. If you still have not filed 90 days after IRS notice, another $10,000 accrues every 30 days, capped at the total reportable amount.13Internal Revenue Service. Failure to File Form 3520/3520-A Penalties On a $400,000 property, the initial exposure alone can reach $140,000. Reasonable cause relief exists but the IRS applies it narrowly.
FBAR and FATCA If You Hold Mexican Accounts
Rental income deposited in a Mexican bank account, or sale proceeds sitting there briefly before transfer, can pull you into two more filings.
FBAR (FinCEN Form 114)
File if the combined balance of all your foreign financial accounts exceeds $10,000 at any point in the year.14Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The threshold looks at the aggregate, not each account. Filing is separate from your tax return, through FinCEN’s BSA E-Filing system, due April 15 with an automatic extension to October 15. Non-willful violations carry penalties up to $10,000 per account per year; willful violations reach the greater of $100,000 or 50% of the account balance.
Form 8938 (FATCA)
Filed with your tax return, with higher thresholds that depend on filing status and where you live:15Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
- Single, living in the US: assets exceed $50,000 on the last day or $75,000 at any point.
- Married filing jointly, living in the US: $100,000 last day or $150,000 at any point.
- Single, living abroad: $200,000 last day or $300,000 at any point.
- Married filing jointly, living abroad: $400,000 last day or $600,000 at any point.
FBAR and Form 8938 are separate obligations with different thresholds and different penalties. You may owe one, both, or neither. The fideicomiso itself may need to be reported on Form 8938 as a specified foreign financial asset.16Internal Revenue Service. Summary of FATCA Reporting for US Taxpayers
Estate Planning Notes
Mexico does not impose an inheritance or estate tax, and property passed through a will or intestate succession is exempt from Mexican income tax. The heir still owes ISAI at re-titling, and if the fideicomiso was not set up with successor beneficiaries named, restructuring the trust with the bank can become time-consuming and expensive. Name contingent beneficiaries at the outset.
On the US side, your Mexican property is part of your worldwide gross estate. The elevated estate tax exemption enacted by the Tax Cuts and Jobs Act sunsets at the end of 2025, and the basic exclusion reverts to roughly $5 million (inflation-adjusted from a 2011 base), about half the 2024-2025 level.17Internal Revenue Service. Estate and Gift Tax FAQs More estates will have exposure starting in 2026.
A Word on Mexican Corporations
Some buyers, particularly of commercial property or multiple rental units, hold Mexican real estate through a Mexican corporation, which can own property anywhere in the country without a fideicomiso. Corporate profits are taxed at Mexico’s flat 30% rate, and dividends to US shareholders trigger additional Mexican withholding. On the US side, owning 10% or more of a Mexican corporation requires Form 5471, and the controlled foreign corporation rules — Subpart F and GILTI — can accelerate US tax on earnings before any dividend is paid. Compliance cost is significantly higher than a fideicomiso, so this structure rarely makes sense for a single vacation home or rental.