Power of Attorney for a Fideicomiso: Managing Your Trust from the US or Canada

If you cannot be in Mexico to sign, someone you trust can sign for you under a Mexican power of attorney (poder). Sign it in the US or Canada and have it apostilled and translated by an authorized perito traductor, or grant it at a Mexican consulate. A special power limited to one act is usually the safer choice.

Written by Galarza Legal · Updated October 2026

When do you need a poder?

Most of the work around a fideicomiso is paperwork you can do from home: sending identification, answering the bank, reviewing drafts. The poder matters when your signature is needed on a notarial deed and you cannot travel to Baja California. Typical cases:

Selling your trust rights by cesión de derechos, or signing the termination of your trust when a buyer sets up a new one.
Buying: signing the trust deed as the new beneficiary.
Changing the trustee bank (substitución de fiduciario) or correcting errors in the deed.
Extending the trust's term, if the bank or notario needs a signed deed.
Dealing with a succession or a lawsuit about the property.

Why can you not just sign the deed remotely?

A Mexican notario is not the same as a US or Canadian notary public. The notario is a lawyer appointed by the state who drafts the deed (escritura), checks the parties and records the act in the notarial protocol. In practice, each party, or that party's attorney-in-fact, signs the deed in person before the notario. Baja California's notary law allows some electronic means, but you should not count on signing your fideicomiso deed remotely unless the notario and the trustee bank confirm it in writing.

So you have two options: travel to sign, or give a poder to someone who will sign in Mexico for you. That person is your attorney-in-fact (apoderado). Choose an adult you trust, with valid identification.

Two ways to grant a poder from abroad

Option 1: sign in the US or Canada. You sign the poder before a local notary public. The document then needs an apostille under the Hague Apostille Convention, and a Spanish translation by an authorized expert translator (perito traductor), before a Mexican notario will use it. A poder signed outside Mexico must also be protocolized (recorded in a notarial deed) by a Mexican notario before it takes effect (Ley del Notariado de B.C., Art. 113). In the US the apostille is usually issued by the Secretary of State of the state where the notary is commissioned; the Apostille Convention has been in force for Canada since 11 January 2024.

Option 2: sign at a Mexican consulate. Mexican consulates can grant a poder in Spanish, acting with notarial functions. A poder granted at a Mexican consulate does not need an apostille, a translation or protocolization.

Consulate appointments can be limited, so book early.

	US or Canadian notary + apostille	Mexican consulate
Where you sign	Any local notary public	The Mexican consulate
Language	Often bilingual; Spanish translation by a perito traductor required	Spanish
Extra steps	Apostille, translation, send the original to Mexico, protocolization by a Mexican notario	Send the original to Mexico
Main risk	Wording the Mexican notario will not accept	Waiting for an appointment
Tip	Get the notario's approval of the draft before you sign	Bring the exact text prepared in Mexico

General or special power: which should you give?

Mexican law recognizes general powers for lawsuits and collections (pleitos y cobranzas), for administration (actos de administración) and for acts of ownership (actos de dominio). A general power for acts of ownership lets the attorney-in-fact sell, mortgage or give away your property rights.

A special power (poder especial) is limited to one act or a short list of acts, for one property. For a fideicomiso, it is usually the safer choice. A good special poder states:

Your full name, nationality and identification, and those of your attorney-in-fact.
The property, as described in the registry, and the trust: bank, trust number and deed details.
The act authorized, for example "to sign the cesión of my trust rights over this property", and any limits such as a minimum price.
That the sale price is paid directly to you, and not to the attorney-in-fact.
Whether the attorney-in-fact may delegate the power to someone else (usually: no).
An expiry date, so the power does not outlive its purpose. If a poder states no term and nothing is done under it, it ends three years after it was granted (Código Civil de B.C., Art. 2420).

What does the Mexican notary check?

Before your attorney-in-fact can sign, the notario reviews the poder. The trustee bank's legal department usually reviews it too. Expect them to check:

That the poder covers the specific act in the deed, for this property and this trust.
That it was granted with the required formalities: apostille and perito translation, or a consular poder.
That it is the original document or a certified copy, not a scan or a simple photocopy, and that a poder signed outside Mexico has been protocolized before a Mexican notario.
That it is still in force: not expired, not revoked, and the grantor still living.
The identity of the attorney-in-fact on the day of signing.

What are the risks of a broad power?

A broad poder is convenient, and that is the problem. Whoever holds it can act without asking you. A general power for acts of ownership can be used to sell or mortgage your rights, and mistakes or misuse are hard to undo once a deed is signed and recorded.

Old powers are a quiet risk. You can revoke a poder at any time, unless it was made irrevocable as part of a contract. To protect yourself, revoke it in writing, usually before a notario, notify the attorney-in-fact and anyone they deal with, and ask for the original poder back. A poder generally ends when the person who granted it dies. If you gave a broad power years ago, ask an attorney whether to revoke it.

How long does it take, step by step?

How long it takes depends on apostille times in your state or province, courier time, the perito translation, protocolization before a Baja California notario and the notario's review; ask for an estimate at the start.

Apostille times vary by state and province, and consulate appointments vary by city. The order that avoids repeats:

Define the act. Decide exactly what the attorney-in-fact will sign, and for which property and trust.
Draft and pre-approve. Prepare the text, ideally bilingual, and get the closing notario and the trustee bank to approve it before you sign.
Sign. Before a local notary public, or at a Mexican consulate.
Apostille (only for the first route), from the competent authority.
Send the original to Mexico by tracked courier.
Translate. A perito traductor translates any part not in Spanish (first route only).
Protocolize, review and sign. A Mexican notario protocolizes a poder signed abroad (a consular poder does not need this), the notario and the bank confirm it, and your attorney-in-fact signs the deed.

How Galarza Legal can help

Mexico Trust Services is the fideicomiso service of Galarza Legal, a Mexican law practice in Baja California led by Lic. Pati Claudia Galarza (Cédula Profesional 15176510). We draft a special poder that fits your act, check it with the notario and the trustee bank before you sign, and tell you which route (apostille or consulate) suits your location and schedule. We advise on Mexican law only; for tax questions at home, ask a U.S. (or Canadian) tax professional. You pay the SRE, the trustee bank, the notario and the registry directly. The firm coordinates the steps; it never receives or holds money for any of them.

Offices in Playas de Rosarito (Blvd. Popotla 3009, Playa Encantada) and San Felipe. Call or WhatsApp +1 619-568-2424, write to [email protected], or book a consultation.

Frequently Asked Questions

Can I sign my fideicomiso deed online or by video?

No. In practice, each party, or that party's attorney-in-fact, signs the deed in person before the notario. Baja California's notary law allows some electronic means, but you should not count on signing your fideicomiso deed remotely unless the notario and the trustee bank confirm it in writing.

Is a US power of attorney valid in Mexico?

It can be used if it is apostilled, translated into Spanish by an authorized perito traductor and protocolized by a Mexican notario, and if its wording covers the act. Have the Mexican notario approve the draft first.

What is the difference between a general and a special poder?

A general poder covers a whole category, such as all acts of ownership. A special poder is limited to one act or a short list of acts for one property, which makes it safer for a fideicomiso.

Who can be my attorney-in-fact?

An adult you trust, with valid identification. Many owners choose a family member. The poder should say that the sale price is paid directly to you.

Do I need an apostille if I sign at a Mexican consulate?

No. A poder granted at a Mexican consulate does not need an apostille or a translation. Book the appointment early.

Can I cancel a power of attorney?

Yes. You can revoke a poder at any time, unless it was made irrevocable as part of a contract. To protect yourself, revoke it in writing, usually before a notario, notify the attorney-in-fact and anyone they deal with, and ask for the original poder back. Ask an attorney to prepare it.

Can Canadians use the apostille route too?

Yes. The Apostille Convention has been in force for Canada since 11 January 2024, so a poder signed in Canada can be apostilled, then translated and protocolized in Mexico.