Dual Citizenship and Cabo Property: How Americans with Mexican Heritage Navigate the System

I work with a lot of buyers in Los Cabos who have Mexican roots. Born in Sonora, raised in Phoenix. Parents from Jalisco, grew up in Houston. Grandmother from Mexico City, but they have never used their Mexican passport for anything more than a family visit. And almost all of them make the same mistake: they walk into a Cabo real estate transaction assuming they need a fideicomiso, pay the setup fee, pay the annual maintenance, and never realize they could have bought the property outright as a Mexican citizen. No bank trust. No $500–$1,000/year in perpetuity. Direct ownership, same as buying a house in Arizona.

The Restricted Zone: Why This Matters

Mexico's Constitution (Article 27) prohibits direct foreign ownership of property within 50 kilometers of the coastline and 100 kilometers of an international border — the "restricted zone." All of Los Cabos falls within this zone. For foreign buyers, the fideicomiso (bank trust) is the standard workaround: a Mexican bank holds legal title in trust, with the foreign buyer as beneficiary. It works, it is well-established, and it costs $500–$1,000 per year in trust maintenance fees.

But here is the key distinction that gets overlooked: the restriction applies to foreigners. Mexican citizens are not foreign. If you are a Mexican citizen — even if you also hold US, Canadian, or any other citizenship — you can buy property anywhere in Mexico, including the restricted zone, directly in your own name. No trust. No bank intermediary. No annual fees.

For a property you hold for 30 years, eliminating the fideicomiso fee saves $15,000–$30,000 over the ownership period. That is not transformative money, but it is real — and more importantly, direct ownership simplifies certain aspects of the transaction while complicating others. Let me walk through both sides.

Who Qualifies: Three Paths to Mexican Citizenship

Born in Mexico

If you were born on Mexican territory, you are a Mexican citizen by birth — period. It does not matter if your parents were American, if you left Mexico at age two, or if you have never held a Mexican passport. Mexican citizenship by birth is irrevocable under the 1998 constitutional reform. You may need to obtain documentation (Mexican birth certificate, passport, CURP) if you have not maintained them, but the citizenship itself was never lost.

Born Abroad to a Mexican Parent

If either of your parents was a Mexican citizen at the time of your birth — even if you were born in the US, Canada, or anywhere else — you are entitled to Mexican citizenship. This is citizenship by descent (ius sanguinis). To formalize it, you need to:

1. Visit a Mexican consulate in the US
2. Present your US birth certificate, your parent's Mexican birth certificate, and proof of their Mexican nationality
3. Apply for a Declaración de Nacionalidad Mexicana
4. Once processed, register for a CURP and obtain a Mexican passport

This process takes 3–6 months depending on the consulate's backlog and the completeness of your documentation. For buyers planning a Cabo purchase, start this process early — well before you find the property you want.

Naturalization

Foreigners who have been legal residents of Mexico for five consecutive years (two years if married to a Mexican citizen) can apply for naturalization. This path is less common among Cabo property buyers — if you already qualified for temporary residency and have lived in Mexico for five years, you have likely already considered this option. The naturalization process involves a Spanish language and Mexican history/culture exam, background checks, and a formal ceremony.

What Changes in the Closing Process

The Cabo real estate closing process for a dual citizen buying as a Mexican national differs from the standard foreign buyer closing in several important ways:

No Fideicomiso Setup

The most obvious change: you skip the fideicomiso entirely. There is no trust bank to select, no trust agreement to negotiate, no setup fee ($1,000–$2,000), and no annual maintenance fee. The notario público processes the sale directly, and the escritura (deed) is issued in your name as a Mexican citizen.

Different ID Requirements

Instead of presenting your US passport and proof of the fideicomiso bank relationship, you present Mexican identification: your Mexican passport, CURP, INE (if you have one), and RFC. The notario verifies your Mexican nationality and proceeds with the closing as a domestic transaction. If you do not yet have an RFC (Mexico's tax ID), you will need to register with SAT — Mexico's tax authority — before closing.

SRE Permit Not Required

Foreign buyers must obtain a permit from the Secretaría de Relaciones Exteriores (SRE) to acquire property through a fideicomiso. Mexican citizens do not need this permit, which eliminates one step and 2–4 weeks of processing time from the closing timeline.

Closing Costs May Differ Slightly

Without the fideicomiso setup fee and SRE permit, your closing costs are slightly lower — typically $1,500–$3,000 less than a comparable foreign-buyer transaction. The notario fees, ISABI (acquisition tax), and registration fees remain the same regardless of nationality.

Tax Implications: The Part Nobody Explains Clearly

US Side: Nothing Changes

If you are a US citizen, the IRS does not care how you hold property in Mexico. Your federal tax obligations are identical whether you buy through a fideicomiso or directly as a Mexican national:

• FBAR (FinCEN 114): Required if you have financial accounts (including Mexican bank accounts used for rental income) with aggregate balances exceeding $10,000 at any point during the year
• FATCA (Form 8938): Required if your specified foreign financial assets exceed $50,000 (single) or $100,000 (married filing jointly) at year-end
• Schedule E: All rental income from the Mexican property is reportable, with deductions for expenses, depreciation, and foreign taxes paid
• Capital gains: Upon sale, you report the gain on your US return and may claim a foreign tax credit for Mexican capital gains tax (ISR) paid

The ownership structure is irrelevant to the IRS. You are a US taxpayer with worldwide income obligations, full stop.

Mexican Side: This Is Where It Gets Interesting

Buying as a Mexican citizen can change your Mexican tax profile in ways that may or may not benefit you:

Mexican tax residency risk: Owning property as a Mexican citizen, combined with spending significant time in Mexico, can strengthen Mexico's claim that you are a Mexican tax resident. If SAT (Mexico's IRS equivalent) determines you are a Mexican tax resident, you would be subject to Mexican income tax on your worldwide income — not just your Mexican-sourced income. This is the same 183-day issue that applies to all foreign residents, but holding property as a Mexican national adds another data point in SAT's favor if your residency status is ever questioned.

ISR on rental income: If you rent the property, the Mexican rental income tax obligations apply regardless of whether you are buying as a foreigner or a citizen. However, as a Mexican citizen, you may have additional filing obligations with SAT that go beyond the rental income withholding that property managers handle for foreign owners.

Predial and other property taxes: Property tax (predial) is the same regardless of ownership structure or nationality. No advantage or disadvantage here.

Estate Planning: The Most Important Consideration

This is where dual citizens need to pay the most attention, because the estate planning implications of direct ownership versus fideicomiso ownership are significant.

Direct Ownership: Mexican Inheritance Law Applies

Property held directly by a Mexican citizen is governed by Mexican inheritance law (Civil Code of the applicable state — in this case, Baja California Sur). Mexico has a forced heirship system for intestate estates (estates without a will), meaning certain family members — spouse, children, parents — have legally protected shares of the estate that cannot be entirely overridden.

If you die without a Mexican will (testamento), your Cabo property will be distributed according to BCS intestate succession rules, which may differ significantly from what your US will or trust specifies. The Mexican process (sucesión) is slow — it can take 1–3 years — and requires a Mexican court proceeding that your US heirs may find frustrating and expensive.

The solution: Every dual citizen who buys property directly must execute a Mexican will that specifically addresses the Cabo property. This will should be coordinated with your US estate plan to avoid conflicts. A cross-border estate planning attorney can draft both documents to work in harmony — ensuring the Mexican property passes according to your wishes without triggering probate in two countries simultaneously.

Fideicomiso: Beneficiary Designation

The fideicomiso has a built-in beneficiary structure that operates somewhat like a US beneficiary designation on a life insurance policy or retirement account. When the trust holder dies, the property passes to the designated beneficiaries without going through Mexican probate. This is simpler, faster, and cheaper for heirs — and it is one reason some dual citizens choose the fideicomiso even though they technically do not need it.

Which Approach Is Better for Estate Planning?

It depends on your specific situation:

• Simple estate, straightforward heirs: Direct ownership with a Mexican will is cleaner and cheaper over the ownership period (no annual trust fees)
• Complex estate, blended family, or asset protection concerns: A fideicomiso with carefully structured beneficiary designations may be worth the annual cost for the simplicity it provides your heirs
• US trust or LLC involvement: If your broader estate plan uses a US trust or LLC, the fideicomiso can be structured with that entity as beneficiary, creating a cleaner integration with your US plan

Common Mistakes Dual Citizens Make

Using a Fideicomiso When They Do Not Need One

The most frequent mistake. An agent or notario defaults to the fideicomiso because it is the standard process for foreign buyers, and nobody asks about the buyer's Mexican citizenship. If you have Mexican nationality — or could obtain it through descent — bring this up with your attorney before the closing process begins. A fideicomiso, once established, can be dissolved, but the process is not free or instantaneous.

Not Having Mexican Documents Ready

Mexican citizenship entitles you to buy directly, but you need the documentation to prove it: birth certificate, CURP, passport, and RFC. If you have not maintained these documents, plan 3–6 months to get them in order through a Mexican consulate. Do not wait until you find a property — start the process now.

Skipping the Mexican Will

The single most dangerous oversight. A dual citizen who buys directly and dies without a Mexican will forces their heirs into a Mexican probate process that is expensive, slow, and may distribute the property differently than intended. The cost of a Mexican will: $500–$1,500. The cost of Mexican probate without one: $10,000–$30,000 and 1–3 years of delay.

Ignoring Mexican Tax Residency Implications

Spending more than 183 days in Mexico while holding property as a Mexican citizen strengthens SAT's argument that you are a Mexican tax resident. If you are a snowbird splitting time between the US and Cabo, be deliberate about tracking your days in each country. A cross-border tax advisor can help you structure your time to avoid inadvertently triggering Mexican tax residency obligations on your worldwide income.

The Decision Framework

Here is how I advise dual citizens to approach the fideicomiso-vs-direct decision:

1. Do you have (or can you easily obtain) your Mexican citizenship documentation? If no, the fideicomiso is the practical choice — the documentation process takes months and should not delay your purchase
2. Is your estate plan simple or complex? Simple (property passes to spouse, then to children in equal shares) → direct ownership with a Mexican will. Complex (blended family, US trust involvement, asset protection concerns) → fideicomiso may be worth the annual fee for estate planning simplicity
3. How long will you own the property? Short hold (5 years or less) → the fideicomiso fee savings are modest. Long hold (15+ years) → saving $500–$1,000/year adds up to $7,500–$15,000
4. How much time will you spend in Mexico? If you will consistently be near or above the 183-day threshold, the tax residency implications of buying as a Mexican national deserve serious attention from a cross-border tax advisor before you commit to either structure

There is no universally right answer. The right answer is the one that matches your specific citizenship status, estate plan, tax situation, and long-term intentions. What is universally wrong is defaulting to the fideicomiso without knowing you had a choice — or buying directly without understanding the estate and tax implications. Both happen frequently, and both are avoidable with the right advice.