US taxes when selling property in Cabo

For Americans who own real estate in Los Cabos, understanding taxes before selling is essential. Many buyers assume that because the property sits in Mexico, the United States has no claim on the profit from a future sale. However, that assumption is incorrect.

The United States taxes citizens on worldwide income, which means that profits from foreign real estate are typically taxable. Therefore, Americans who sell a home in Cabo must consider both Mexican tax rules and U.S. tax obligations.

Fortunately, the system is designed to avoid double taxation in most cases. In addition, proper documentation and planning can significantly reduce the total tax burden.

This guide explains how taxation works when an American sells property in Cabo and highlights several mistakes that owners should avoid.

How the US Taxes Foreign Property Sales

When an American sells real estate abroad, the IRS generally treats the transaction the same way it would treat a sale of property in the United States. In other words, the profit is taxed as a capital gain.

The basic formula is straightforward:

Capital Gain = Sale Price – Adjusted Cost Basis

Your adjusted basis includes the purchase price plus certain allowable expenses such as improvements and selling costs. If the property was held for more than one year, the gain typically qualifies for long-term capital gains rates.

Currently, long-term capital gains are taxed at:

0% for lower-income taxpayers
15% for many middle- and upper-income taxpayers
20% for higher-income households

Additionally, some sellers may owe the 3.8% Net Investment Income Tax if their income exceeds certain thresholds.

Because of these rules, the IRS expects Americans to report the sale on Form 8949 and Schedule D when filing their annual tax return.

Mexican Capital Gains Tax at Closing

Although the United States taxes the gain, Mexico typically taxes the transaction first. In most property sales in Los Cabos, the tax is calculated and withheld at closing by the notario, the government-appointed attorney who oversees the transfer.

Depending on the situation, Mexico may apply one of two methods:

A flat tax on the gross sales price, often around 25 percent.
A tax on the net gain that can reach roughly 35 percent.

The second method is usually preferable because it allows the seller to deduct the purchase price and documented improvements. However, proper documentation is essential.

Because the tax is withheld during the closing process, sellers generally receive their proceeds after the Mexican tax obligation has already been satisfied.

The Foreign Tax Credit and Double Taxation

Many American owners worry about paying tax twice on the same gain. Fortunately, U.S. tax law includes a mechanism to prevent this outcome.

When Mexican tax is paid on the sale, the seller can typically claim a Foreign Tax Credit on their U.S. return. This credit offsets the U.S. tax liability associated with the same gain.

For example, imagine a property generates a $300,000 gain. If Mexico collects $70,000 in capital gains tax and the U.S. tax would otherwise be $60,000, the foreign tax credit can eliminate the U.S. liability entirely.

In other situations, the U.S. tax might exceed the Mexican tax. In that case, the seller simply pays the difference to the IRS.

Therefore, while both countries tax the sale, the credit system usually prevents true double taxation.

Primary Residence Exclusion

Some owners may qualify for the primary residence capital gains exclusion. This rule allows individuals to exclude up to:

$250,000 of gain for single taxpayers
$500,000 for married couples filing jointly

To qualify, the property must have been the owner’s primary residence for two of the five years preceding the sale.

However, many Americans in Los Cabos use their homes as vacation properties or seasonal residences. As a result, this exclusion often does not apply.

Even so, owners who spend significant time living in the property may wish to discuss eligibility with a tax advisor.

Depreciation Recapture for Rental Homes

If the home was rented, the tax treatment becomes more complex. Owners who claimed depreciation on a rental property must generally recapture that depreciation when the property is sold.

Depreciation recapture is taxed at a maximum rate of 25 percent in the United States. Consequently, rental properties can produce higher tax bills than purely personal residences.

Because many Cabo homes are rented through property managers or vacation rental platforms, this rule is important for owners to understand well before listing the property.

Currency Exchange and Taxable Gains

Another factor that surprises many sellers is the effect of exchange rates. The IRS requires the purchase price and the sales price to be converted into U.S. dollars using the exchange rate on the respective transaction dates.

This means that currency fluctuations can create a larger taxable gain than expected. Even if the peso price increases only modestly, the dollar-denominated gain could be higher depending on the exchange rate at the time of sale.

For this reason, accurate records of the purchase date exchange rate are essential.

The Most Costly Mistake Cabo Sellers Make

Among American owners in Los Cabos, one mistake appears repeatedly: failing to collect official Mexican invoices for improvements.

In Mexico, capital improvements must be supported by facturas, which are official tax invoices issued through the Mexican tax system. Without these documents, the notario usually cannot include the improvement costs in the property’s adjusted basis.

Consider a common scenario.

An owner purchases a home for $1,500,000 and spends $350,000 upgrading the property with a new pool design, landscaping, and an outdoor kitchen. If the owner sells the property for $2,600,000, those improvements could dramatically reduce the taxable gain.

However, if the work was paid informally and no facturas were issued, the improvements may not count. The result is a much larger taxable gain and a significantly higher capital gains tax bill.

In luxury markets such as Chileno Bay, Palmilla, or Querencia, renovation costs can easily exceed several hundred thousand dollars. Without proper documentation, the additional tax could reach six figures.

Another Common Error: Low Recorded Purchase Price

Years ago, some buyers were advised to record a lower purchase price in the escritura in order to reduce transfer taxes. While this might have saved money at the time, it creates a serious problem later.

A lower recorded purchase price reduces the property’s cost basis. Consequently, when the property is sold, the taxable gain appears much larger than it actually is.

In many cases, the extra capital gains tax far exceeds the transfer tax savings from the original purchase.

Best Practices for American Property Owners

Owners who plan to sell property in Los Cabos should take several practical steps to minimize potential tax exposure.

First, collect facturas for all significant improvements and renovations. These invoices must be issued in the owner’s name to qualify as deductible costs.

Second, keep records of closing costs from the original purchase as well as the eventual brokerage commission. Both may be included in the cost basis.

Third, maintain a detailed file containing invoices, contracts, and payment confirmations for major upgrades. Many experienced owners keep a dedicated “capital improvements file” from the day they close on the property.

Finally, consult both a U.S. tax advisor and a Mexican accountant before listing the home for sale. Coordinating advice from professionals in both countries can help prevent costly surprises.

Understanding Taxes Before You Sell

Selling property in Los Cabos can generate significant profit, especially as the region continues to attract international buyers. Nevertheless, tax planning should be part of the exit strategy.

By understanding how the United States taxes foreign property sales, how Mexico calculates capital gains tax, and how the foreign tax credit works, American owners can approach the process with confidence.

Equally important, proper documentation of improvements and accurate reporting of the purchase price can dramatically reduce the tax burden at closing.

With the right preparation, selling a Cabo property can remain a rewarding financial outcome rather than an unexpected tax challenge.

Disclaimer:
The information provided on this page is for general educational and informational purposes only and should not be interpreted as tax, legal, or financial advice. Tax laws and regulations vary by jurisdiction and may change over time. The tax treatment of buying or selling real estate in Mexico can differ depending on an individual’s circumstances, including residency status, ownership structure, and prior use of the property.

Before making any decisions related to the purchase or sale of property, buyers and sellers should consult with a qualified Certified Public Accountant (CPA), tax advisor, or attorney who is familiar with both United States and Mexican tax laws. The author and publisher assume no responsibility for actions taken based on the information presented here.