Why missing an Invoice (Factura) can increase your Capital Gains Tax in Mexico

Why missing an Invoice (Factura) can increase your Capital Gains Tax in Mexico

A recent closing highlighted a common, and often overlooked issue in real estate transactions in Mexico.

The seller was about to face a significantly higher capital gains tax (ISR), simply because they could not initially provide the invoice (factura) and XML file from when they originally purchased the property.

The Problem: Missing Documentation

In Mexico, when you sell real estate, your acquisition cost plays a critical role in determining your taxable gain.

However, this cost must be properly documented and supported.

• Typically, the notary will require:

• The official invoice (factura)

• The corresponding XML file

Without these documents, the acquisition cost may not be recognized, which can result in a higher taxable gain and increased ISR liability.

What Happened in This Case

In this particular transaction, the seller did not initially have the required documentation.

As a result, the closing was at risk of being calculated with a higher tax burden than necessary.

Fortunately, we were able to retrieve the factura and XML in time.

This allowed the notary to:

• Validate the original acquisition cost

• Correctly calculate the taxable gain

• Significantly reduce the ISR payable

Why This Matters for Foreign Sellers in Mexico

This situation is more common than many foreign investors realice, especially when purchasing property from developers.

In many cases, buyers:

• Do not request the factura

• Do not receive the XML file

• Or fail to properly store these documents

Years later, when selling the property, this oversight can result in unexpected tax exposure.

Key Takeaway

If you are buying property in Mexico, particularly from a developer, make sure to:

• Request your official factura (invoice)

• Obtain the XML file

• Verify the information is correct

• Store both documents securely

This simple step can make a significant difference in your tax outcome when you sell.

Capital Gains Tax in Mexico: What to Know

When selling real estate in Mexico, taxes are calculated based on:

• Acquisition cost

• Adjustments (inflation, improvements, expenses)

• Sale price

If your acquisition cost cannot be properly proven, the taxable gain increases — and so does your tax liability.

In Mexico real estate, small details can have major financial consequences.

Proper documentation is not just administrative, it is a key component of protecting your investment.

Need Help With a Real Estate Closing in Mexico?

We assist foreign buyers and sellers with real estate closings in Los Cabos, including tax structuring, due diligence, and transaction coordination.

📩 Contact us to ensure your closing is handled correctly from start to finish.