Real Estate Guides

Capital Gains Tax Exemptions When Selling in Mexico

Sarah Bender March 12, 2026 8 min read

If you’re planning to sell your home in Mexico, understanding capital gains tax exemptions can make a significant difference in how much tax you ultimately pay at closing.

Many homeowners in San Miguel de Allende are surprised to learn that Mexico does offer tax exemptions when selling a primary residence, but qualifying for them requires some preparation well before closing.

The good news is that with the right documents in place, sellers can often reduce or even eliminate a large portion of their capital gains tax liability.

This guide explains the key steps to help ensure you qualify.

Step 1: Obtain Your RFC (Mexican Tax Number)

The first and most important step is obtaining your RFC (Registro Federal de Contribuyentes) from the Mexican tax authority (SAT).

Your RFC is required in order to apply for the capital gains tax exemption when selling property in Mexico.

When you obtain your RFC, make sure to also request your: Electronic signature (e.firma)

This digital signature allows you or your accountant to make updates to your tax information online, such as correcting your address, without needing to schedule another appointment with SAT. This can save a lot of time during the sales process.

An example of a Constancia Situacion Fiscal (Tax Status Certificate). This will show you RFC number.
An example of a Constancia Situacion Fiscal (Tax Status Certificate). This will show you RFC number.

Step 2: Your RFC Must Appear on an Official Document

Each person named on the property deed must have their RFC number linked to an official document showing the property address.

Accepted documents include:

  • CFE electricity bill
  • Telmex bill
  • Mexican bank statement

Important:
A SAPASMA water bill is NOT accepted by the notary for tax exemption purposes.

Step 3: Each Owner Must Have Their Own Document

A Telmex phone bill with the RFC included
A Telmex phone bill with the RFC included

If there is more than one person named on the property deed, each owner must have their own document showing their RFC number and the property address.

For example:

  • One owner can appear on the CFE electricity bill
  • The other owner can appear on the Telmex bill or a Mexican bank statement

Each document must clearly show:

  • The owner’s name
  • The RFC number
  • The property address

Acceptable Documentation Combinations

Here are some common examples of how this requirement can be satisfied.

Option 1

  • One CFE bill in one owner’s name
  • One Telmex bill in the other owner’s name

Option 2

  • One CFE bill in one owner’s name
  • One Mexican bank statement in the other owner’s name

Option 3

If only one bill can be obtained, it may be accompanied by:

If both spouses are named on the property deed, the marriage certificate can serve as the second legal document.

Step 4: Make Sure the Address Matches the Deed

This is one of the most common issues sellers encounter. The address on the following documents must match exactly:

  • Your RFC document (Constancia de Situación Fiscal)
  • Your utility bills or bank statements
  • The property deed

Pay special attention to details such as:

If the addresses do not match, they must be corrected before closing, otherwise the notary will not be able to apply the tax exemption.

Step 5: Give Yourself Enough Time

This process takes longer than many people expect.

Once you add your RFC number to your bills or bank statements, or correct any address mismatch, it can take several weeks for the updated information to appear on the next official statement.

Notaries will only accept:

  • A printed or downloaded copy of a current bill or bank statement
  • Showing the correct name, RFC number, and property address

A receipt confirming that the change was requested is not sufficient.

For this reason, it is best to begin preparing these documents well before you list your property or accept an offer.

A Final Thought for Sellers

Sometimes sellers are tempted to rush into a sale, especially when they receive an attractive offer.

But if the documentation required for the capital gains tax exemption in Mexico is not ready, closing too quickly can mean paying significantly more tax than necessary.

In many cases, waiting a few extra weeks to close can save a substantial amount in capital gains taxes.

In our humble opinion, that extra time is often well worth it.

Thinking About Selling Your Home in San Miguel de Allende?

If you are considering selling your property and want to understand how to reduce capital gains tax in Mexico, we would be happy to guide you through the process.

Erick Sakal & Sarah Bender
Live In San Miguel

One small favor

Enjoying what you read here?

If our guides and local knowledge are useful to you, we only ask one thing: add Live In San Miguel as a preferred source on Google. It is free, takes two clicks, and our latest stories will show up for you in Google Top Stories.

Add us on Google
Opens Google · remove anytime
Share this article WhatsApp Facebook Pinterest LinkedIn
Sarah Bender
Author
Two decades ago, I left my British hometown for the vivid allure of Mexico. Now, between juggling life with two lively boys, I write about our experiences in the beloved San Miguel de Allende. Stick around for genuine, down-to-earth insights into our everyday paradise.
Inspired by San Miguel?
Find your perfect home here
Browse Listings
Chat with Sarah