Current as of: April 4, 2026. This article reflects legal and regulatory authorities, administrative guidance, and market practice available as of the date above. Rules, thresholds, agency guidance, and administrative practice may change after that date, and the analysis may not apply the same way to every set of facts.
FIRPTA and the Mexican Seller: US Tax Withholding on Real Estate Dispositions by Foreign Persons
For Mexican nationals and family offices selling U.S. real estate, the closing process includes a withholding obligation that can materially reduce net proceeds if not planned for in advance. A foreign seller of U.S. real property generally faces withholding obligations that operate independently of the seller's final U.S. income tax liability. The FIRPTA and Section 1445 rules can materially affect closing proceeds, timing, and reporting, and they should generally be analyzed together with any parallel Mexican tax consequences.
Mexico itself may also tax the gain from US real property disposition. The interplay between US withholding and Mexican income taxation, together with any foreign tax credit relief available under applicable Mexican domestic law and the US-Mexico treaty's double-taxation relief provisions, requires coordination across both jurisdictions. A seller who satisfies US withholding but fails to file and pay Mexican taxes faces exposure in both countries.
Critical point on Mexican tax exposure: A Mexican tax resident who disposes of US real property must report and pay Mexican income tax on the gain under Mexican domestic law, in addition to any US tax or withholding. Mexico taxes its residents on worldwide income. This dual filing obligation is separate from and independent of the US FIRPTA withholding mechanics discussed below.
Key Points
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15% withholding applies by default: IRC §1445 generally requires the buyer to withhold 15% of the amount realized when purchasing a U.S. real property interest from a foreign person, subject to limited exceptions including the residence exception in IRC §1445(b)(5) if its statutory requirements are satisfied.
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Withholding is distinct from tax liability: The amount withheld may exceed or fall short of the seller's actual US tax on gain; excess withholding generates a refund claim, while under-withholding does not eliminate the seller's filing and payment obligations.
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Form 8288-B may reduce withholding, but timing should be planned conservatively. A seller may apply for a withholding certificate where the statutory and regulatory requirements are satisfied, but IRS processing timing is not fixed and should be verified against current practice rather than assumed from a standard estimate.
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USRPHC status extends FIRPTA to corporate interests: If a US corporation's assets are 50% or more real property by value (making it a USRPHC), the stock itself becomes a US real property interest subject to FIRPTA withholding for all shareholders, regardless of individual ownership percentage. USRPHC is a corporation-level classification that affects all shareholders equally.
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The buyer's failure to withhold creates serious consequences: If the buyer fails to withhold, the buyer may become liable to the IRS for the unpaid withholding plus penalties and interest; the seller remains liable for U.S. income tax, and the availability of any Mexican foreign tax credit depends on Mexican domestic law, treaty application, documentation, and the amount of qualifying U.S. income tax actually paid.
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US-Mexico treaty Article 13 grants both countries taxing rights: Article 13 is symmetric: both countries have primary taxing rights on gains from real property located in their territory. Both the US and Mexico may tax gains from real property disposition; the treaty does not prevent double taxation at the rate level, only provides credit mechanisms.
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Coordination with Mexican tax counsel is necessary: Filing requirements, depreciation recapture rules, and treaty elections operate on both US and Mexican timelines and carry penalties in both jurisdictions if missed. Dual-jurisdiction compliance requires attention to both filing deadlines.
I. FIRPTA and Section 1445 Basics
A. The statutory framework
IRC Section 897 establishes that a foreign person's gain from disposing of a US real property interest (USRPI) is taxable as income effectively connected with a US trade or business. This means the foreign seller is taxed as if the gain were effectively connected with a US trade or business; the applicable tax rate depends on the character of the gain, so long-term capital gain treatment may still apply where available, subject to recapture and other special rules. Section 1445 operationalizes this rule by imposing a withholding requirement on the buyer.
B. Definition of USRPI
A USRPI includes real property located in the United States and, subject to statutory exceptions, an interest in a domestic corporation that is or was a US real property holding corporation. Stock that is regularly traded on an established securities market may be excluded only if the transferor's ownership stayed within the applicable threshold during the relevant testing period. The definition is broad: it covers direct ownership of land, buildings, and improvements; leaseholds; and indirect ownership through partnership or trust interests. For Mexican investors in US real estate funds, interests in entities that hold US real property can raise FIRPTA issues, but partnership interests are analyzed under rules distinct from the USRPHC stock rules; transfers of partnership interests may implicate IRC §§897(g), 864(c)(8), and 1446(f), while stock of a domestic corporation may be a USRPI if the corporation is a USRPHC.
C. The withholding obligation
When a foreign person disposes of a USRPI, the transferee (buyer) must withhold and remit 15% of the amount realized. The "amount realized" includes cash proceeds, debt relief, and the fair market value of property received in exchange. This withholding is mandatory absent an exception or a withholding certificate from the IRS.
II. Withholding Rates and Exemptions
A. The 15% rate and its applicability
The general withholding rate under Section 1445 is 15% of the amount realized. This rate applies to dispositions on or after February 17, 2016, when the Protecting Americans from Tax Hikes (PATH) Act increased the rate from 10% to 15%. The rate does not fluctuate based on the seller's actual tax bracket or filing status. A seller with a capital loss pays 15% withholding. A seller with substantial capital gain beyond the amount realized must remit 15% on the documented proceeds.
B. The $300,000 residence exception
No withholding is required if the amount realized does not exceed $300,000 and the transferee is an individual who acquires the property for use as a residence within the meaning of Section 1445, based on the statutory occupancy test for the first two 12-month periods after the transfer. This exception applies only if the statutory requirements are met, including that the transferee be an individual acquiring the property for use as a residence; transactions involving entity sellers or more complex structures require separate analysis.
C. Reduced rate for residences between $300,000 and $1,000,000
If a residence sells for more than $300,000 but not more than $1,000,000, and the transferee is an individual acquiring the property for use as a residence within the meaning of Section 1445, withholding is reduced to 10% instead of 15%.
D. Actively traded stock exception
Stock of a domestic corporation that is regularly traded on an established securities market may be excluded from USRPI treatment only if the seller's ownership remained within the applicable statutory threshold during the relevant testing period. When this exception applies, it removes liquidity concerns for Mexican shareholders of publicly traded US real estate companies.
III. US Real Property Holding Corporations (USRPHCs)
A. The 50% test
A domestic corporation is a USRPHC if the fair market value of its USRPIs equals or exceeds 50% of the sum of the fair market value of (a) its US real property interests, (b) its interests in real property located outside the United States, and (c) any other assets used or held for use in a trade or business. USRPHC status is determined under the statutory asset-value test, and for stock-disposition purposes the inquiry includes whether the corporation is a USRPHC or was one during the relevant lookback period, subject to applicable cleansing rules. A Mexican investor who holds 10% of a US corporation with ten operating office buildings and one industrial warehouse may have a USRPHC on their hands. If the stock is treated as a USRPI (for example, stock of a domestic USRPHC that does not qualify for an applicable exception), a sale by a foreign shareholder generally triggers FIRPTA withholding on the amount realized for the stock sale, not merely on the portion attributable to the underlying real property.
B. Consequences for shareholders
A foreign shareholder's stock in a USRPHC is itself a USRPI. When the shareholder sells the stock, the buyer must generally withhold 15% of the amount realized on the stock sale. The shareholder cannot avoid this by claiming the gain is on the sale of corporate securities rather than real property. Certain distributions by entities holding US real property interests can raise separate FIRPTA and withholding issues, but the analysis depends on the type of entity, the character of the distribution, and the specific withholding regime applicable to the transaction.
C. Cleansing transactions
A corporation may eliminate USRPHC status by disposing of real property interests so that USRPIs fall below 50% of total assets. A corporation may cease to be a USRPHC for this purpose only if the statutory cleansing requirements are satisfied, including the rule that the corporation must not have held any USRPIs during the relevant testing period, subject to the requirement that prior dispositions be fully taxable, gain-recognition transactions. Stock of a former USRPHC can remain a USRPI during the applicable lookback period unless the corporation satisfies the statutory cleansing rules, which generally require full disposition of USRPIs in fully taxable, gain-recognition transactions. The timing of cleansing sales affects the withholding obligations of downstream share sales.
IV. The Withholding Certificate Process
A. Form 8288-B application
A foreign person may apply to the IRS on Form 8288-B for a withholding certificate to reduce or, in limited cases, eliminate withholding (for example, where the transfer is nonrecognition, the maximum tax due is less than the default withholding, or no tax will be due). The application must include detailed information about the property, the contract price, the estimated gain or loss, relevant deductions, and the basis calculation. The IRS will not act on an incomplete application. Common defects include failure to specify a transfer date or failure to provide current property valuations and debt payoff statements.
B. IRS processing timeline
As of 2026, IRS processing of Form 8288-B applications commonly exceeds 90 days. Applicants may wish to file well in advance of closing to account for current processing times. There is no statutory deadline and no expedited processing option. For a sale with a firm closing date, filing the application well in advance of the expected closing date is advisable to allow a buffer for IRS processing and any required supplemental submissions.
C. Burden and contents of the certificate
If the IRS determines under the Section 1445 regulations that the transferor's maximum tax liability is less than the default withholding amount, or that no tax is due or another regulatory basis applies, it may issue a certificate reducing or eliminating withholding. The IRS examines whether the seller will owe less tax than 15% of the amount realized after accounting for basis, depreciation recapture, capital loss carryforwards, and related deductions. The certificate binds the buyer: if the buyer receives a valid certificate, the buyer withholds the amount specified, not 15%.
D. Refund claims
If excess withholding is remitted, the seller may claim a refund by filing the appropriate US income tax return and relying on the stamped Form 8288-A provided through the IRS after the buyer files the withholding forms. The refund claim must be filed by the expiration of the statute of limitations (generally three years from filing, but potentially longer). A Mexican national who does not have a US tax identification number (EIN or ITIN) may request an ITIN before filing the return.
IV-A. State Nonresident Real Estate Withholding
Separate from federal FIRPTA, some states impose their own real estate or nonresident withholding rules on certain transfers, but these are state-specific regimes and are not FIRPTA. Their applicability varies significantly by jurisdiction and requires state-by-state analysis. Any applicable state withholding is in addition to federal withholding and affects the seller's net proceeds calculation and the buyer's compliance obligations.
V. FIRPTA Payment Methods
Executive Order 14247 (March 25, 2025) directed that all FIRPTA withholding payments be made electronically through the Electronic Federal Tax Payment System (EFTPS), originally effective September 30, 2025. However, the IRS subsequently postponed implementation (IR-2025-94), and as of the date of this article, paper check remittance with Forms 8288 and 8288-A remains accepted. Practitioners should monitor IRS guidance for any reinstatement of the electronic mandate. EFTPS enrollment requires advance planning (EIN validation and PIN receipt via mail), so parties to FIRPTA transactions may wish to establish EFTPS access proactively.
VI. Reporting and Buyer Liability
A. Form 8288 and Form 8288-A
The buyer must file Form 8288 with the IRS within 20 days of the date of transfer (closing date). The buyer must file Form 8288-A with the IRS together with Form 8288; the IRS then furnishes the stamped Form 8288-A to the foreign seller as evidence of the withholding. Form 8288-A documents the withheld amount and is essential for the seller's refund claim. Failure to file timely exposes the buyer to penalties and may delay or complicate the seller's ability to claim a refund of excess withholding. If the buyer files Form 8288-A late or inaccurately, the seller's refund claim may be delayed or rejected. The buyer must also report the transaction to the state real estate withholding authority in certain states.
B. Buyer's liability for failure to withhold
If the buyer fails to withhold and remit the required amount, the buyer becomes liable to the IRS for the unpaid withholding plus penalties and interest. This liability is separate from the seller's US income tax liability. A buyer who fails to withhold can be held liable to the IRS for the withholding tax, penalties, and interest, although the buyer may seek contractual indemnity or reimbursement from the seller if the transaction documents so provide. This creates an incentive for buyers to demand certification that the seller is not a foreign person; absent such certification, the buyer may consult a tax advisor before closing to assess exposure.
C. Affidavit of non-foreign status
A buyer may avoid withholding if the seller provides an affidavit under penalty of perjury stating that the seller is not a foreign person and providing a valid US tax identification number. This affidavit is unavailable if the seller is a foreign person for US tax purposes. A Mexican national may still qualify as a non-foreign person if the individual is a US citizen or is treated as a US resident for tax purposes (for example, under the substantial presence test); nationality alone does not determine FIRPTA status.
VI-A. Partnership Interest and Entity-Level FIRPTA
Transfers of partnership interests by foreign persons may trigger a separate withholding regime under IRC §1446(f), which applies because a portion of the gain may be treated as effectively connected under IRC §864(c)(8). This is distinct from Section 1445 FIRPTA withholding, and the applicable exceptions and certifications follow the Section 1446(f) regulations, not a simple asset-percentage test. This regime applies to transfers of partnership interests by foreign persons and is distinct from other withholding rules that may apply to partnership distributions or effectively connected income.
VII. US-Mexico Treaty Overlay
US-Mexico overlay. Article 13 of the US-Mexico Income Tax Convention provides that gains from the disposition of real property may be taxed in the country where the property is located (the source country). Article 13 is symmetric: both countries have primary taxing rights on gains from real property located in their territory. The US may impose its full Section 897 tax on a Mexican resident's gain from US real property, and Mexico may independently impose its full tax on the same gain. The treaty does not exempt the Mexican seller from US FIRPTA tax. The treaty preserves source-country taxing rights over gains from real property and addresses relief from double taxation, while the availability and mechanics of any Mexican foreign tax credit depend on the treaty read together with applicable Mexican domestic law.
The interaction between U.S. withholding and Mexican foreign-tax-credit mechanics can be complex, and the amount withheld at closing may not track the seller's final U.S. tax or the amount ultimately creditable in Mexico. The cross-border tax cost should therefore be modeled from the seller's actual basis, gain, and filing posture rather than from the withholding amount alone.
Mexican tax counsel will need to assess the total tax cost in both jurisdictions and to identify any planning opportunities available under Mexican law or the treaty. A seller may be entitled to reduced US withholding through Form 8288-B if the US tax is lower than 15%; this strategy only succeeds if the Mexican advisor confirms that the lower US payment will not create an adverse Mexican tax consequence.
VII-A. Buyer Status and Dual-Jurisdiction Compliance
The federal FIRPTA withholding obligation generally turns on the seller's status as a foreign person and whether the asset transferred is a USRPI; the buyer's own status does not ordinarily change the basic Section 1445 withholding framework, although other cross-border compliance issues may arise depending on the parties and structure. Mexican buyers acquiring from Mexican sellers face dual-jurisdiction compliance requirements.
VIII. Planning Considerations
A. Timing of withholding vs. filing
The withholding occurs at closing. The seller's actual US tax liability is determined on the seller's applicable US federal income tax return for the year of disposition (for example, Form 1040-NR for a nonresident alien individual or the appropriate return for a foreign entity). A refund claim is separate and may take months or years to process. For a Mexican seller, the interim period creates cash flow and potential cross-border tax uncertainty. If a complete Form 8288-B application is timely submitted, the parties may qualify to suspend remittance of withholding pending IRS action under the Section 1445 regulations, and an issued withholding certificate can reduce or eliminate the amount otherwise required to be withheld.
B. Blocker corporation structures
Some Mexican investors use a US holding company or blocker corporation to acquire and hold US real property. If the blocker is a US corporation, the corporation itself is subject to ordinary US corporate income tax rules on a later sale of the property; FIRPTA issues may arise instead when a foreign shareholder disposes of stock that is a USRPI or receives certain relevant distributions. The Mexican shareholder then exits the blocker in a separate transaction that may or may not be a USRPI sale depending on the blocker's classification and the treaty provisions. This structure adds complexity and generally shifts the manner and level at which US tax is imposed, rather than eliminating US tax exposure; the corporate-level tax and any later shareholder-level FIRPTA consequences must be analyzed separately.
C. Partnership and trust interests
A Mexican investor may hold an interest in a US partnership that owns real property. A transfer of a partnership interest by a foreign person may implicate the separate withholding regime under IRC §1446(f), rather than the 15% Section 1445 withholding rule that applies to direct transfers of USRPIs. The reporting and withholding mechanics depend on the Section 1446(f) regulations and related partnership certifications. The investor cannot avoid withholding by simply characterizing the interest as intangible or a securities interest.
IX. Compliance Checkpoints
A Mexican seller of US real property will coordinate with US and Mexican tax counsel on the following:
- Confirmation that the buyer or the buyer's counsel has complied with Form 8288 and Form 8288-A filing deadlines.
- Receipt of the stamped Form 8288-A furnished by the IRS and verification that the withholding amount is accurate.
- Determination of whether to file a Form 8288-B application before closing to reduce withholding.
- Preparation of Form 1040-NR for the year of disposition, including all deductions and depreciation recapture.
- Filing of a corresponding Mexican tax return and claim for foreign tax credit for US taxes paid.
- Confirmation that any applicable state nonresident real estate withholding obligations have been satisfied.
- For installment sales or other deferred-payment transactions, analysis of the special Section 1445 rules for determining and satisfying withholding on the amount realized, rather than assuming withholding occurs simply with each later payment.
This Insight is provided by HIRO LAW for general informational and educational purposes only. It does not constitute legal, tax, investment, or other professional advice and should not be relied upon as such. No attorney-client relationship is created by your receipt of or access to this material. The information contained herein may not reflect the most current legal developments and is not guaranteed to be complete, correct, or up to date. You should not act or refrain from acting based on any information in this Insight without first seeking qualified counsel licensed in the relevant jurisdiction(s). Each cross-border transaction, investment, and compliance matter involves unique facts and circumstances that require individualized analysis. Prior results do not guarantee a similar outcome.