How to Report the Sale of Foreign Property to the IRS on Schedule D

When a US citizen sells property in Mexico, the IRS requires you to report the gain on your federal income tax return—even if Mexico already withheld tax at closing. The sale of a Mexican fideicomiso beneficial interest is treated as a sale of real property for IRS purposes, reportable on Schedule D and the underlying Form 8949. This guide walks through each step.

Step 1: Gather Your Documentation

Before you prepare the forms, collect:

• Original fideicomiso trust deed showing the purchase date and price in pesos (and any USD equivalent stated)
• Closing statement from original purchase (estado de cuenta from the notario) showing all costs paid
• Sale closing statement from the Mexican notario showing gross sale price, notario fees, and ISR withheld
• Exchange rates for both the purchase date and the sale date
• Capital improvement records (contractor invoices, permits, appraiser certificates) that you want to add to your basis
• Form showing Mexican ISR withheld (the notario's declaración remitted to SAT, or a certificate of retention)

Step 2: Calculate Your Cost Basis in USD

Your cost basis is the total USD equivalent of what you paid to acquire the property, plus qualifying capital improvements and closing costs.

Converting from pesos to USD:

The IRS requires you to use the exchange rate on the date of the transaction, not the current rate or an average. Acceptable sources:

• Federal Reserve H.10 release (foreign exchange rates)
• US Department of the Treasury exchange rates for the relevant year
• A recognized financial institution's rate on the transaction date

If you paid in USD (as most buyers at oceanfront developments like Panorama by Viento do), you use the USD amount directly.

Allowable additions to basis:

• Notario fees at original purchase
• Bank establishment fee for the fideicomiso
• Acquisition taxes (ISAI or derechos de registro) paid at closing
• Cost of qualifying capital improvements (not repairs)

What you cannot add to basis:

• Annual fideicomiso trust fees (these are investment expenses, not capital costs)
• Property tax (predial) payments
• HOA fees or maintenance costs

Step 3: Calculate the Gain or Loss

Gain = Sale proceeds (net of allowable selling costs) − Cost basis

Allowable selling costs that reduce your proceeds include notario fees at sale, real estate agent commissions, and certain transfer taxes. The ISR withheld by Mexico is not a reduction of proceeds—it is a tax you pay separately and claim as a credit.

Convert your sale proceeds to USD using the exchange rate on the closing date.

Example:

• Sale price: 11,200,000 MXN
• Exchange rate on sale date: 17.5 MXN/USD
• Sale proceeds in USD: $640,000
• Selling costs: $12,800 (notario, agent)
• Net proceeds: $627,200
• Cost basis: around half a million USD (original purchase in USD)
• Total gain: $237,200

Step 4: Determine Short-Term vs. Long-Term

The holding period begins on the date you acquired the beneficial interest in the fideicomiso (the closing date of your purchase). If you held the property for more than one year before selling, the gain is long-term and taxed at preferential rates (0%, 15%, or 20% depending on your taxable income). Short-term gains (held one year or less) are taxed at ordinary income rates.

Step 5: Complete Form 8949

Report each property sale separately on Form 8949 (Sales and Other Dispositions of Capital Assets):

• Column A: Description of property (e.g., "Beneficial interest in fideicomiso, Ensenada condo, Km 104 CTT")
• Column B: Date acquired (closing date of purchase)
• Column C: Date sold
• Column D: Sale proceeds in USD (net of selling expenses)
• Column E: Cost basis in USD
• Column H: Gain or loss

If Mexico tax was withheld and you are claiming the foreign tax credit (rather than deducting it), check box "F" (other codes) if there are adjustments, or leave codes blank and report on Form 1116 separately.

Step 6: Carry Totals to Schedule D

Transfer the totals from Form 8949 to the appropriate section of Schedule D:

• Part I for short-term gains (property held one year or less)
• Part II for long-term gains (property held more than one year)

Schedule D aggregates all your capital gains and losses for the year, including any US brokerage sales.

Step 7: Claim the Foreign Tax Credit on Form 1116

If Mexico withheld ISR at closing, you likely have a significant foreign tax credit available. File Form 1116 (Foreign Tax Credit):

• Category of income: Passive income (for investment property) or general limitation income (if mixed use)
• Country: Mexico
• Foreign taxes paid: The amount of ISR withheld, converted to USD at the rate on the date withheld
• Net foreign-source income: The gain attributable to the Mexican property

The credit is limited to the US tax attributable to foreign-source income, but for most Mexico property sellers, the Mexican tax exceeds the US liability on the gain, making the credit fully effective with unused amounts carried forward.

Section 121 Exclusion: Apply Before the Credit

If the property qualifies as your primary residence under Section 121 (owned and used as principal residence for at least 2 of the last 5 years), apply the exclusion ($250,000 single / $500,000 married) before calculating the remaining taxable gain. The foreign tax credit applies only to the portion of gain that remains taxable in the US.

Filing Deadline and Extensions

The sale is reported on your Form 1040 for the tax year in which the sale closed. If you need more time, file Form 4868 for a 6-month extension—but this extends the time to file, not the time to pay. If you expect to owe US tax after the foreign tax credit, pay an estimated amount by April 15.

Buyers considering an investment at Viento in Ensenada who want to model their eventual tax exit before purchasing—including the Schedule D calculation and foreign tax credit scenario—are encouraged to reach out to our team. We can connect you with a bilingual CPA familiar with Baja California real estate transactions. Contact us via WhatsApp or visit us at Km 104 Carretera Tijuana–Ensenada.