Can a foreign seller defer FIRPTA gain into an opportunity zone fund?

The eligible-gain test is about US taxability, and FIRPTA gain passes it

Reg. section 1.1400Z2(a)-1(b)(11) defines an eligible gain as one that would be recognized for federal income tax purposes and subject to tax under subtitle A. For a nonresident alien most capital gains fail that test because they are not taxed in the United States at all. Gain on a US real property interest is the exception: section 897(a)(1) treats it as if it were effectively connected with a US trade or business, so it is taxed and it is eligible.

The IRS opportunity zone questions answer the point directly at question 20: nonresident aliens and foreign corporations may elect to defer eligible gains that are otherwise subject to federal income tax in their hands, and the IRS gives gain from selling US real property as an example. If a treaty would exempt the gain, the foreign person must waive the treaty benefit to elect.

The regulation spells out the waiver in paragraph (b)(11)(ix)(A): whether gain is subject to tax is determined after any treaty exemption, and a person who is not a United States person may not elect unless it irrevocably waives any treaty benefit that would exempt the gain, in a signed statement under penalties of perjury. Most US treaties preserve the US right to tax gains on US real property, so for most foreign sellers of rentals there is nothing to waive.

The deferral does not reduce FIRPTA withholding at closing

In a 1031 exchange, a foreign seller can at least file Form 8288-B on the nonrecognition ground and have the buyer hold the 15% rather than remit it. The opportunity zone deferral is different in kind: it is an election to exclude the gain from gross income for the year, made on the return after the investment is complete, not a nonrecognition provision the buyer can see at closing.

Treasury's April 2021 proposed regulations on foreign persons investing in qualified opportunity funds say why that matters: the existing section 1400Z-2 regulations do not coordinate the deferral election with the withholding rules in sections 1445, 1446(a) and 1446(f), and because a foreign person may claim the withholding as a credit or refund later, the withholding will not serve its purpose of ensuring the tax is collected. The proposal's answer is an eligibility certificate from the IRS, which a security-required person would have to obtain before electing, backed by an irrevocable standby letter of credit from a US bank; a certificate could then reduce or eliminate withholding on the transfer.

Those rules would apply only to transfers after the date the regulations are published as final, and no final rule was found. Until then the sequence is: the buyer withholds 15% and files Forms 8288 and 8288-A within 20 days, the seller invests the gain within 180 days from other funds, and the seller claims the withholding as a credit on Form 1040-NR line 25f with the stamped Form 8288-A, as described on getting FIRPTA withholding refunded.

The cash-flow problem: 180 days to invest while 15% sits with the IRS

Section 1400Z-2(a)(1) excludes the gain to the extent of the amount invested in a qualified opportunity fund during the 180-day period beginning on the date of the sale. Only the gain needs to be invested, not the whole price, which is the subject of investing the gain or the whole price. The refund of the withholding, however, arrives months after the 180 days have run, because the return cannot be filed until the year ends and the IRS says Form 8288-A refunds can take up to six months.

So a foreign seller funds the investment from the 85% that closes, or from other money. On a leveraged property, where the cash left after paying off the loan is less than the gain plus the withholding, the withholding can leave too little to invest the full gain. That is a reason to compare a 1031 exchange, where the certificate route keeps the 15% in play, against the fund.

The election itself goes on the return for the year of the sale: Form 8949 reports the deferral and Form 8997 tracks the investment each year. For a nonresident that return is Form 1040-NR, due June 15 of the following year when there are no US wages.

How long the deferral lasts, and what a foreign investor should weigh

For investments made after December 31, 2026, section 1400Z-2(b)(1) as amended by Public Law 119-21 brings the deferred gain into income in the year that includes the earlier of the date the fund interest is sold or the date five years after the investment. The rolling rule and the basis step-ups are on the five-year deferral for opportunity zone investments. The deferred gain remains effectively connected income when it comes in, so it is taxed on a later Form 1040-NR, and the section 897 statement regime that applies to a 1031 does not apply here.

A qualified opportunity fund interest is illiquid, its value can fall to zero, and nothing about the tax deferral protects the investment. A foreign investor should also ask who the fund's withholding agent is for distributions and for the eventual sale of the interest, since partnership withholding under section 1446 can apply to a foreign partner. The client's fund page is at opportunity zone funds.

Hypothetical: $400,000 of gain on a $1,000,000 sale

A nonresident sells a rental for $1,000,000 with a $600,000 adjusted basis and no mortgage. The buyer withholds $150,000 and remits it; the seller receives $850,000. All figures are hypothetical and rounded; model your own with a preparer who files Form 1040-NR.

Within 180 days the seller invests $400,000 in a qualified opportunity fund and keeps $450,000. On the 2026 Form 1040-NR, filed by June 15, 2027, the seller reports the $400,000 gain, elects to defer it, and claims the $150,000 of withholding on line 25f against a US tax of zero on the deferred gain. The refund follows, possibly six months later. Had the seller done a 1031 exchange instead, the full $1,000,000 would have had to go into replacement property, but a Form 8288-B filed by closing would have kept the $150,000 out of the IRS's hands.

Where this fits beside a 1031 for a foreign owner

A failed exchange can also end in a fund, on the timeline explained in plan B after a failed 1031.

• Use the fund when you want to take cash off the table and defer only the gain; use the exchange when you want to defer everything and keep the withholding in play.
• Confirm that no treaty position of yours exempts the gain, or be ready to waive it irrevocably.
• Count the 180 days from the closing date and do not rely on the withholding refund to fund the investment.
• File Form 1040-NR with Forms 8949 and 8997 for the year of sale, with the stamped Form 8288-A attached to the front.
• Watch for final regulations on the eligibility certificate; they would change the withholding step for transfers after their publication.