Mexican Estate Settlement From the US: Property, Succession, and Inheritance

When a Mexican national dies in the United States and leaves property, bank accounts, or retirement savings in Mexico, the surviving family faces two parallel estate systems — one in each country — operating under completely different legal frameworks. The US side follows common-law probate rules that vary by state. The Mexican side follows civil-law succession rules that vary by state too, but with a fundamentally different structure.

You cannot settle the Mexican estate from a US probate court. Mexican real estate, Mexican bank accounts, and Mexican pension claims are governed exclusively by Mexican law, and they require Mexican legal proceedings.

Testamentary vs. Intestate Succession

The first question is whether the deceased left a Mexican will (testamento).

If a will exists (sucesión testamentaria): The process runs through a notario público — a government-licensed legal professional with authority to adjudicate estate distributions without a court hearing, as long as all heirs agree. The notario verifies the will, identifies heirs, inventories assets, and executes the transfers. This is faster and cheaper than the judicial path.

If no will exists (sucesión intestamentaria): Mexican civil law uses a hierarchy of heirs, but the order, shares, and treatment of a spouse or concubine depend on the applicable state's law and the family's circumstances. A Mexican notario público or civil court must determine heirship.

If all heirs agree on the distribution, a notario público can handle the intestate succession administratively. If any heir contests, the case goes to a civil court (juez de lo familiar), which takes significantly longer.

Running the Process From the United States

Because you are in the US and the estate proceedings happen in Mexico, you need a legal representative on the ground. The mechanism is a Power of Attorney (Poder Notarial) executed at the nearest Mexican consulate.

The consulate notarizes the poder, which authorizes a licensed attorney or the notario público in Mexico to act on your behalf — attend hearings, sign documents, present evidence, and execute property transfers. You do not need to travel to Mexico for the proceedings, though some notarios may request your presence for the final signing.

Documents you need at the consulate:

• Your valid Mexican ID (INE or passport) or proof of identity
• The deceased's certified Mexican death certificate (or the US death certificate, apostilled and translated, with a consular registration)
• Proof of your relationship to the deceased (birth certificate, marriage certificate)
• Your CURP

The SAT Filing Timeline

The deceased's tax obligations do not disappear at death. The executor (albacea) must file specific notices with the Mexican Tax Administration Service (SAT) within strict deadlines:

Aviso de Apertura de Sucesión — Filed within one month of the albacea accepting the role. This registers the death with SAT, designates the executor as the estate's tax representative, and prevents penalties from accumulating on unfiled returns.

Final annual tax return — The albacea files the deceased's Declaración Anual covering income from January 1 of the death year through the date of death.

RFC cancellation — After the estate is fully liquidated and assets distributed, the albacea files the Aviso de Cancelación del RFC por Liquidación de la Sucesión to close the deceased's tax identity permanently.

Treat the one-month Aviso deadline as a compliance deadline: missing it can expose the estate to fines and delay banking or property work until the filing is current. If the deceased had rental income, business revenue, or investment returns still flowing after death, the estate remains responsible for addressing that income in its tax filings.

Property Transfer Taxes and Notarial Fees

Inheriting Mexican real estate triggers two cost layers that catch many families by surprise:

ISAI (Impuesto Sobre Adquisición de Inmuebles) — The local property acquisition tax, ranging from 2% to 4.5% of the property's assessed value depending on the state. This is paid by the heir receiving the property.

Notarial fees — The notario público charges 4% to 7% of the property value for the succession proceedings and the formal deed transfer (escrituración). These fees are regulated by state law but still represent a significant cost on valuable properties.

Income tax (ISR) exemption — Under Article 93 of Mexico's Income Tax Law (LISR), inherited assets are exempt from income tax. However, this exemption is conditioned on declaring the inheritance to SAT if the total exceeds $500,000 pesos. Failing to declare triggers the full tax liability.

Combined, the transfer costs on a property assessed at $1 million pesos might run $60,000 to $115,000 pesos in taxes and fees. Exact amounts depend on the state, valuation, and applicable notarial charges. Families who budget only for the US estate costs get blindsided.

The Interaction With US Probate

If the deceased also had assets in the US — bank accounts, brokerage accounts, real property — those go through US probate separately. The two proceedings run in parallel but do not interact legally. A US Letters Testamentary grants no authority over Mexican assets, and a Mexican albacea designation has no standing in US courts.

This means the family may need:

• A US probate attorney in the state where US assets are located
• A Mexican notario público or attorney for the Mexican succession
• A cross-border tax advisor if the combined estate triggers reporting obligations in both countries (IRS Form 706-NA for US-situated assets exceeding $60,000, plus SAT succession filings)

The Mexican National Dies in the US — Family Guide walks through both estate tracks — US probate and Mexican succession — in parallel, with a binational estate inventory worksheet and the SAT filing timeline mapped against the US deadlines so nothing slips through.