What Is Rule 8 in Mexico? Foreign Property Ownership Explained

Rule 8 (Regla Octava) is a procedural rule under Mexico's Foreign Investment Law that governs how foreigners formally acquire real estate. It exists because Article 27 of the Mexican Constitution restricts foreign ownership of land inside the "restricted zone": 100 km from any international border & 50 km from any coastline.

For buyers in San Miguel de Allende, the practical answer is simple: San Miguel is far inland, outside the restricted zone, so the constitutional restriction does not apply & Rule 8 procedures route to direct ownership rather than a fideicomiso.

The Constitutional Framework

Article 27 of the 1917 Constitution reserves direct ownership of land near borders & coasts for Mexican nationals. The Foreign Investment Law (Ley de Inversión Extranjera) & its Regulations operationalize this & set out the procedures by which foreigners can hold property in compliance with the constitution.

What Rule 8 Actually Governs

Rule 8 lays out the procedure by which a foreign person or foreign-owned entity formally registers an acquisition with the Ministry of Foreign Affairs (Secretaría de Relaciones Exteriores, SRE) & signs the agreement (the Calvo Clause) to be treated as a Mexican national with respect to the property & not invoke their home government's protection. It applies to acquisitions in the non-restricted zone & to property held through Mexican entities.

Restricted Zone vs. Non-Restricted Zone

• Restricted zone: 100 km from any international border & 50 km from any coastline. Foreigners acquiring residential property here must use a fideicomiso, a 50-year renewable bank trust where the bank holds bare title & the foreign buyer holds all economic & use rights.

• Non-restricted zone: Everywhere else, including San Miguel de Allende. Foreigners take direct fee-simple title via escritura pública, same as Mexican citizens, following the SRE permit & Calvo Clause procedure.

Why This Matters in San Miguel

Almost every "how do foreigners buy property in Mexico" article online defaults to the fideicomiso explanation, because most foreign buyers historically targeted beach destinations in the restricted zone. In San Miguel, that default is wrong. The process here is closer to a US closing than to a coastal Mexican one.

Practical implications of buying outside the restricted zone:

• Lower long-term costs (no fideicomiso bank fees, typically $500 to $1,000 USD/year).

• Cleaner estate planning, the deed is in your name & passes by your succession setup.

• Simpler ownership structure, no third-party bank trustee.

• Same purchase timeline (45 to 90 days from offer to closing).

When Rule 8 Procedures Still Apply

Even outside the restricted zone, foreign buyers go through the SRE permit & Calvo Clause as part of the closing. Your Notario handles this routinely, you sign the agreement at closing, & the registered deed reflects your foreign-buyer status without limiting your ownership rights in the non-restricted zone.

Foreign Mexican Entities

A Mexican LLC or sociedad with foreign shareholders can also hold property under Rule 8 procedures. This is a planning option for buyers who want corporate ownership for estate or tax structuring. Always coordinate with a Mexican attorney & a US cross-border tax advisor before choosing this route, because corporate ownership can create US reporting obligations (Form 5471).

The Bottom Line

Rule 8 is administrative plumbing. In San Miguel de Allende, it routes you to direct fee-simple ownership in your own name, same as any Mexican citizen. The fideicomiso scare you read online about "Mexican property law" is a coastal & border issue, not a San Miguel one.

For the broader walkthrough of how Americans actually buy here, see can Americans buy property in San Miguel. For the closing-day legal mechanics, the legal foundation guide goes deeper.

When you are ready to take this from theory to a specific property, reach out & I will introduce you to a Notario who can walk you through the SRE permit & Calvo Clause for your purchase.