Key takeaways
- Section 1400Z-2(e)(2) defines related persons by reference to §267(b) and §707(b)(1), lowering the ownership threshold from more than 50% to more than 20%.
- A gain is not eligible for deferral if it arises from a sale or exchange with a related person under that 20% test.
- Qualified opportunity zone business property must be acquired by purchase, which under §179(d)(2) excludes acquisitions from related persons, from members of the same controlled group and with carryover basis.
- For the purchase rule, family attribution reaches only spouses, ancestors and lineal descendants; for other §267(b) purposes, brothers and sisters count too.
- Leases from related lessors are allowed, but rent cannot be prepaid more than 12 months ahead and the terms must be market rate.
- A landowner who sells a site to a QOZB owned by a fund in which the landowner's family holds more than 20% will generally fail the purchase requirement.
Where do related-party rules matter in an Opportunity Zone deal?
In three places: whether the investor's gain is eligible, whether the QOZB's property was acquired by purchase, and how the QOZB's leases are tested.
Fig. 1Related-party checkpoints from gain to zone property
- Checkpoint 1Investor's saleGain must not be from a sale to a related personInvest eligible gain
- QOFEquity investment within 180 daysBuy newly issued interest
- QOZBInterest acquired from the QOZB for cashPurchase or lease property
- Checkpoints 2 and 3Zone propertyPurchased from an unrelated seller, or leased on related-party terms
1. Eligible gain
Under the final regulations, a gain is eligible for deferral only if it does not arise from a sale or exchange with a related person, using the 20% test.4,5 An investor who sells a building to their own 25%-owned partnership cannot defer that gain in a QOF. See which capital gains qualify.
2. Property acquired by purchase
Qualified opportunity zone business property must be acquired by purchase as defined in §179(d)(2), with the 20% substitution.1 Treasury's §179 regulation explains that property is not acquired by purchase if it comes from a person whose relationship would disallow losses under §267 or §707(b), from another member of the same controlled group, or with a basis determined by reference to the seller's basis.3
3. Leases
Leased property can come from a related lessor, but the tenant cannot prepay more than 12 months of rent, the terms must be market rate, and leased personal property that is not original use triggers a requirement to acquire equal-value qualifying property.6,7 Details are in leased property rules.
Do family members count toward the 20% test?
Yes. An individual is treated as owning what their family owns, and the definition of family depends on which rule is being applied.
Under §267(c)(4), an individual's family includes brothers and sisters, a spouse, ancestors and lineal descendants.2 For the purchase rule, §179(d)(2) narrows family to a spouse, ancestors and lineal descendants, which is why Treasury's §179 regulation treats a purchase from a brother or sister as a qualifying purchase while a purchase from a spouse is not.3 Siblings therefore matter for eligible-gain and lease testing but not for the QOZB's purchase test.
Can a landowner sell land to a QOZB in a fund their family invests in?
Only if the landowner and the QOZB are not related at the 20% level after attribution; otherwise the land is not acquired by purchase.
Illustrative example. Assumptions: two parents own 100% of LandCo LLC, which owns a 300-acre site in a zone. A data center QOF owns 100% of a QOZB that wants to buy the site. Investors in the QOF include the parents (5% combined), their daughter (10%) and their son (8%). Everyone else in the fund is unrelated.
Fig. 2Illustrative: the parents' constructive ownership of the QOF
Illustrative- Parents, owned directly5%
- Daughter, attributed to parents10%
- Son, attributed to parents8%
- Parents' constructive total23%
% of QOF
The parents own 100% of LandCo and are treated as owning 23% of the QOF, and through it 23% of the QOZB. Two partnerships owned more than 20% by the same persons are related, so LandCo's sale to the QOZB is not a purchase under §179(d)(2). The land would not be QOZB property.1,3 Brothers and sisters are not attributed to each other under the purchase rule, but children and parents are.
| Option | Result | Trade-off |
|---|---|---|
| Family cuts its combined fund stake to 20% or less | LandCo is unrelated; the purchase qualifies | Family gets a smaller share of the fund |
| LandCo ground-leases the site to the QOZB at market rent | Leased land can qualify even from a related lessor | 12-month prepayment limit; no below-market purchase plan |
| LandCo sells to an unrelated buyer who later sells to the QOZB | Risky; the anti-abuse rule can recharacterize step transactions | Get advice before attempting |
| Parents sell the site and invest the gain in an unrelated QOF | Gain can be eligible if the buyer is unrelated | No interest in the data center project |
The general anti-abuse rule in the regulations lets the IRS recast a transaction whose significant purpose is to achieve a result inconsistent with the purposes of §1400Z-2.8 Confirm any landowner structure with your tax adviser. Landowner options are covered in Opportunity Zones for landowners.
Can a sponsor's affiliates do business with the fund?
Yes. Fees and service contracts with affiliates are not barred, but property purchases from affiliates usually fail and every related arrangement must be at market terms.
Fig. 3Common sponsor-affiliate arrangements
- PassAffiliate provides development or property management services for a feeNot a purchase of property; keep fees at market
- FailQOZB buys equipment or land from a 20%-plus affiliateNot acquired by purchase; not QOZB property
- WatchAffiliate leases land or equipment to the QOZBAllowed with market rent and the 12-month prepayment limit
- PassSponsor invests its own capital gains in the QOFGain eligible if it did not come from a related-party sale
- WatchSponsor receives a carried interest for servicesAn interest received for services is not a qualifying investment
- FailQOF buys an existing QOZB interest from the sponsorQOZB interests must be acquired from the QOZB itself, generally for cash
The requirement that a QOF acquire QOZB stock or partnership interests directly from the business, solely in exchange for cash, is in §1400Z-2(d)(2)(B) and (C).1 Interests received for services are excluded from qualifying investments under the regulations.10,11 Fund terms that should disclose these arrangements are covered in fund fees and terms.
Where do related-party issues come up in data center projects?
Most often with the land, with sponsor-owned equipment and with power or utility affiliates.
- Land: developers often control sites through affiliates. If the affiliate is related at 20% to the QOZB, a sale fails the purchase rule; a market-rate ground lease is the common alternative.
- Equipment: transformers, switchgear and generators bought from an affiliated supplier or a related QOZB may not be acquired by purchase. Buy new equipment from unrelated vendors.
- Power assets: an on-site substation or generation plant owned by a related entity and leased to the QOZB must be at market rent, with no long prepayments.
- Multiple QOZBs: two QOZBs owned by the same QOF are related, so moving equipment from one campus QOZB to another is not a purchase.
- Tenants: a tenant that also invests in the fund at more than 20% raises market-rate and active-business questions on the lease.
Data center budgets are large, so the stakes are too. One misclassified $20 million equipment purchase can move a QOZB's 70% tangible property percentage by several points. See the 70% tangible property test and buying land for an Opportunity Zone data center.
Recent proposed rules add reporting at the QOZB level, which will make transactions between related entities easier for the IRS to see.12 Those rules are proposed, not final.
Common questions
What ownership level makes parties related for Opportunity Zones?
More than 20%, counting direct and indirect ownership. Section 1400Z-2(e)(2) substitutes 20% for 50% in §267(b) and §707(b)(1).
Can I defer a gain from selling property to my own company?
Not if you own more than 20% of the buyer, directly or through attribution. A gain from a sale to a related person is not eligible for Opportunity Zone deferral.
Can a QOZB buy property from a sibling of the fund's sponsor?
For the purchase rule, siblings are not attributed to each other, so a sibling's sale is not automatically a related-party purchase. Entity ownership and other relationships must still be checked.
Can a QOZB lease property from a related party?
Yes. Leased property can come from a related lessor if the rent is market rate, no more than 12 months is prepaid, and the other leasing conditions are met.
Are a QOF and its QOZB related?
Yes, when the fund owns more than 20%, which is typical. That is fine for the QOF's investment in the QOZB, but property moving between them, or between two QOZBs of the same fund, is not a purchase.
Can a landowner contribute land to a QOF instead of selling it?
A landowner can contribute property, but an investment made with property rather than eligible gain cash generally produces an interest that is wholly or partly non-qualifying, and the QOZB would not acquire the land by purchase. Get advice before using this route.
Sources
Every numbered note in this guide links to the source below.
- 1.U.S. Government Publishing Office (GovInfo), “26 U.S.C. 1400Z-2: Special rules for capital gains invested in opportunity zones,” 2026. govinfo.gov
- 2.Legal Information Institute, Cornell Law School, “26 U.S. Code 267: Losses, expenses, and interest with respect to transactions between related taxpayers,” n.d. law.cornell.edu
- 3.Legal Information Institute, Cornell Law School, “26 CFR 1.179-4: Definitions (including purchase),” n.d. law.cornell.edu
- 4.Holland & Hart, “Taxpayer-Favorable Final Opportunity Zone Regulations Issued,” 2019. hollandhart.com
- 5.Steptoe, “Final Opportunity Zone Regulations Provide Some Much-Needed Clarity,” 2020. steptoe.com
- 6.Nelson Mullins, “Qualified Opportunity Zones Guidance: Second Set of Proposed Regulations Released,” 2019. nelsonmullins.com
- 7.Brownstein Hyatt Farber Schreck, “16 Takeaways from the Second Round of Opportunity Zone Regulations,” 2019. bhfs.com
- 8.EY Tax News, “Final regulations on Opportunity Zones retain same approach as proposed regulations, with a few big changes,” 2020. taxnews.ey.com
- 9.Gibbons P.C., “New Qualified Opportunity Zone Regulations Provide Clarity for the Development of Real Property,” 2019. gibbonslaw.com
- 10.Orrick, “Final Tax Regulations Offer More Certainty to Opportunity Zone Fund Managers and Investors,” 2020. orrick.com
- 11.K&L Gates, “Opportunity Zone Final Regulations: First Impressions,” 2019. klgates.com
- 12.Federal Register (GovInfo), “Information Reporting Regarding Qualified Opportunity Zones and Updated Qualified Opportunity Fund Certification and Decertification Procedures, 91 FR 57968,” 2026. govinfo.gov
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