October 16, 2025
Thinking about selling your home in Los Barriles and not sure how capital gains tax works in Mexico? You are not alone. Whether you live here full-time or you are an international owner, a smooth sale starts with clear tax basics. In this guide, you will learn how Mexico taxes gains, when the primary residence exemption can help, what the notary does at closing, and the other local costs to expect in Baja California Sur. Let’s dive in.
Mexico taxes gains on the sale of real estate located in Mexico under the federal Income Tax Law (ISR). The law treats the sale as Mexican-sourced income. The rules and closing mechanics depend on whether you are a Mexican tax resident or a non-resident. You will handle most of this with the notary in La Paz municipality at closing. See the Income Tax Law overview.
Mexico allows an exemption for the sale of your primary residence (casa habitación) if you meet strict conditions. The exemption is capped by a limit expressed in UDIs, and any amount above that cap can be taxable. The sale must be formalized before a notary who will check your documents. Review the exemption in the law text.
You typically must be a Mexican tax resident and prove the property is your primary residence. Foreign owners may use the exemption only if they meet residency and documentation rules set out in the regulations. The notary will verify your status with SAT records and your paperwork.
You can generally claim the exemption only once in a set period, commonly enforced as not having used it in the previous 3 years. The notary will ask you to sign an under-oath statement confirming this. Always confirm timing and current rules before listing.
In Mexico, the notary (fedatario) is central to closing. The notary typically calculates any provisional income tax due at signing, issues the official tax receipt, and submits payment to the authorities within legal deadlines. Expect the notary to request proof for any exemption or deduction. See practical notes on fedatario procedures.
If you are a non-resident, the buyer or notary often must withhold tax at closing under the statute. In some cases, you can choose a gain-based calculation instead of a gross-proceeds withholding by appointing a qualified Mexican representative and following the legal steps. Ask the notary about your options early. Review the ISR withholding framework.
When withholding applies, it is usually handled at closing. If you must self-pay, the law sets short filing windows, often within 15 days of the sale. Your notary will confirm the exact deadline in your file. Learn more about filing mechanics.
ISAI is a state transfer tax that buyers typically pay at closing in Baja California Sur. The commonly cited local practice is about 2 percent of the higher of the transaction value, appraisal, or cadastral value, but the exact rate and calculation come from the notary. Always confirm your specific estimate before you sign. Understand ISAI basics.
Most resales of finished homes intended for habitation are exempt from VAT. New developer sales, commercial components, or certain construction services can trigger IVA. Confirm your facts with the notary and your accountant for your Los Barriles property. See the IVA exemption reference.
You will see line items for notary fees, registration in the Public Registry, and administrative certificates. The notary will provide a detailed cost sheet and will issue official receipts when taxes are paid. Who pays which items can be negotiated in the purchase contract. Read about typical notary documentation.
U.S. persons report worldwide income. You may qualify for the U.S. principal residence exclusion if you meet the ownership and use tests. Review examples and rules in IRS Publication 523.
If you pay Mexican income tax on the sale, you can usually claim a foreign tax credit on Form 1116. Keep your Mexican tax receipts and the notary’s official constancias for your return. Start with the Form 1116 instructions and Publication 514.
Selling in Los Barriles means working with a La Paz-area notary and aligning your marketing, pricing, and documents ahead of time. A clear plan helps you use any exemptions you qualify for and avoid surprise withholdings at the closing table. If you want white-glove, bilingual support and cross-border fluency, connect with Kitsya & Bruno Bourlon to map your sale from pricing to closing.
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After years in the fast-paced luxury market of Mexico City, this dynamic team now helps clients embrace a new life in La Paz—one of tranquility, opportunity, and beauty.