Do foreigners need a Mexican will for property in Mexico?

By Lic. Pati Claudia Galarza, attorney (Licenciada en Derecho), Cédula Profesional 15176510 · Published October 18, 2026 · Español

Often, yes. If your Baja California home is held in a fideicomiso that names substitute beneficiaries, the trust already says who receives your beneficiary rights. Everything else you own in Mexico, such as property held by escritura in your name, Mexican bank accounts, vehicles or shares in a Mexican company, passes by succession under Mexican law. A will made before a Baja California notary is usually the most direct way to settle that, because it lets your heirs use the notarial route. A foreign will can be valid here, but it must first go through a Baja California court.

What your fideicomiso already covers

In a fideicomiso, the bank trustee holds title to the property and you are the beneficiary (Ley General de Títulos y Operaciones de Crédito, art. 381). The settlor can name several beneficiaries to receive the benefit at the same time or one after another (art. 383). Successive substitution on death is allowed only in favor of people alive or already conceived when the settlor dies (art. 394, fr. II).

Check your trust: who the substitute beneficiaries are, in what order and shares, and whether they are still the people you want. If no substitute is named, or all of them have died, the beneficiary rights may have to go through a succession. Our post on restricted zone trusts explains how the trust works.

What passes by succession under Mexican law

Real property in Baja California is governed by the state Código Civil even when the owners are foreigners (Código Civil para el Estado de Baja California, art. 14). That covers a house or lot held in your name by escritura, and Mexican law also decides how your other Mexican assets are transferred to your heirs. Foreigners can inherit by will or without one, within the limits set by the Constitution and its laws (art. 1214), which matters for a foreign heir of property in the restricted zone.

Is my home-country will valid in Baja California?

It can be. A will made abroad takes effect in Baja California if it was made according to the laws of the country where it was signed (CC BC, art. 1480). But the person with an interest must prove to a judge, with official certifications from that country, the death, the text of the will and that it is legally valid. The judge declares it formally valid if it does not contradict Mexican public order. Opening a foreign will and declaring it formally valid is always done in court, never before a notary (Ley del Notariado para el Estado de Baja California, art. 202).

That means a court case before your heirs can transfer anything, with foreign public documents legalized or apostilled and Spanish translations. Court procedure in Baja California is moving district by district to the Código Nacional de Procedimientos Civiles y Familiares: Playas de Rosarito since 1 March 2026, Ensenada from 1 December 2026, and Tijuana and San Felipe from 31 March 2027, subject to budget. A will made before a Mexican consulate acting as notary is treated as one made before a Baja California notary (CC BC, art. 1481).

The testamento público abierto in Baja California

The Código Civil now recognizes two forms of will: the testamento público abierto and the will made abroad (art. 1387). The público abierto is made before a notary and, if the testator chooses, two witnesses (art. 1398). You state your wishes, the notary drafts the clauses and reads them aloud, and you, the notary and any witnesses sign, all in one act (arts. 1399 and 1406). If a required formality is missing, the will has no effect (art. 1407).

Capacity: from age 16 and in sound mind (art. 1193).
Witnesses become mandatory if you cannot write, are blind or are deaf-mute (arts. 1401, 1402 and 1404). Heirs, legatees and their close relatives should not be witnesses, nor anyone who does not understand your language (art. 1389).
Language: if you do not know Spanish, two interpreters you choose attend and sign. You can write your will in your own language and they translate it; the Spanish translation goes into the notary's protocol and your original into the appendix (arts. 1390 and 1405).
One person per will: two people cannot make a will in the same act, so spouses each sign their own (art. 1183).
The notary reports the will to the state Archivo General de Notarías within 10 business days (Ley del Notariado, art. 143), which keeps the state registry of wills (art. 169, fr. V).

Succession before a notary or in court

A succession with no dispute, where the heirs are adults, emancipated minors or legal entities, can be handled before a notary (Ley del Notariado, art. 202). With a Mexican will, this works wherever you last lived or died (art. 203). Without a will, the notarial route is available only if your last domicile was in Baja California or most of your assets are here (art. 204), and all the heirs must appear with two witnesses (art. 209).

The notary first obtains reports from the RPPC, the Archivo General de Notarías and the national archive of wills of the Secretaría de Gobernación (arts. 203 and 204). The heirs' declarations are published twice in a local newspaper, ten days apart (art. 210), and then the inventory, appraisal and adjudication are recorded (arts. 211 and 212). A foreign will, or any dispute, sends the case to court.

ISAI on inherited property

Acquiring real property by inheritance is subject to the municipal ISAI, but the rate is 0% for inheritances between spouses and from parents to children or children to parents (Ley de Hacienda Municipal del Estado de Baja California, art. 75 Bis B, fr. V). The 0% does not apply if those heirs cede their rights. Other heirs pay at the municipality's ordinary rate.

Estimate as of 2026: ISAI tariffs for other heirs differ by municipality; see our closing-cost guides. Notary fees, the avalúo and registration are separate costs that the heirs pay directly to each provider.

Mes del Testamento

Every September the Secretaría de Gobernación and Mexico's notaries run the Mes del Testamento campaign. In Baja California, the Ley del Notariado requires that wills signed in September receive a discount, set in the state Arancel de Notarios (art. 200 BIS). Ask the notary for the current amount when you book.

Coordinate with your home-country plan

Under the Código Civil, a later complete will revokes an earlier one unless it says the earlier one survives in whole or in part (art. 1381). Have your Mexican will cover your Mexican assets and say that your other wills remain in force, and ask your home-country adviser to make sure a later will there does not revoke the Mexican one.
Make sure names, shares and substitutes match across your home-country will, any living trust and your fideicomiso.
Tell your executor which notary holds your Mexican will and where your escrituras and trust documents are.
Ask your US or Canadian tax adviser about home-country tax effects; this article covers Mexican law only.

How Galarza Legal can help

We review your fideicomiso and your Mexican assets, prepare the instructions for your testamento público abierto, coordinate the notary appointment and interpreters, and, when the time comes, guide your heirs through the notarial or court succession. You pay the notary and any other fees directly.

Frequently asked questions

If my house is in a fideicomiso, do I still need a Mexican will?

The trust's substitute beneficiaries cover the beneficiary rights, so the house itself may not need the will. You still need a plan for any other Mexican assets, and for the case where every substitute has died.

Is my US or Canadian will valid in Baja California?

It can be, if it was valid where it was made. But a Baja California judge must first declare it formally valid, on proof of the death and of the will's text and validity (Código Civil BC, art. 1480). It cannot be done before a notary.

Can I make a Mexican will if I do not speak Spanish?

Yes. Two interpreters you choose attend and sign, and you may write the will in your own language for them to translate into Spanish (Código Civil BC, arts. 1390 and 1405).

Do my children pay ISAI when they inherit my house?

Inheritances from parents to children, children to parents and between spouses are taxed at a 0% ISAI rate in Baja California, unless the heirs cede their rights (Ley de Hacienda Municipal, art. 75 Bis B). Notary, appraisal and registration costs still apply.

Can my heirs avoid court?

Usually yes with a Mexican will, if there is no dispute and the heirs are adults; the succession can then be handled before a notary (Ley del Notariado BC, arts. 202 and 203). A foreign will always requires a court step first.

General information about Mexican law as of the date shown; not advice on a specific case. Every figure is an estimate.