Opportunity Zone fund structures

Opportunity Zone funds differ along four choices: how the fund is taxed, whether it owns property directly or through an operating business, how many projects it holds, and whether it qualifies as a rural fund. A Qualified Opportunity Fund (QOF) is an investment vehicle organized as a corporation or a partnership for the purpose of investing in qualified opportunity zone property, which must make up at least 90% of its assets.¹ The fund self-certifies by filing Form 8996 with its federal return; there is no IRS approval step.^3,4

Qualified opportunity zone property comes in three forms: stock in a Qualified Opportunity Zone Business (QOZB) that is a corporation, a partnership interest in a QOZB, and qualified opportunity zone business property (tangible property used in a trade or business in the zone) held directly by the fund.^1,2 Those three forms produce the two basic ownership models described below. For the definitions, see what a Qualified Opportunity Fund is and what a Qualified Opportunity Zone Business is.

For most real estate and infrastructure projects, a partnership is the better fit because it passes losses and debt basis to investors and widens the 10-year exclusion. Under the final regulations, an investor in a partnership or S corporation QOF who has held the investment for 10 years can elect to exclude capital gain and section 1231 gain (including depreciation recapture) that the fund or its lower-tier QOZB reports from selling assets, other than inventory.^5,6 An investor in a corporate QOF generally gets the 10-year benefit by selling the QOF stock itself; the regulations also let a 10-year investor in a QOF REIT elect to exclude certain capital gain dividends the REIT designates from its sales of qualifying property, so confirm the details with counsel.

Debt is the second reason. A partner's basis in a QOF partnership interest starts at zero for the deferred gain, but it rises by the partner's share of partnership liabilities under IRC §752. That basis can absorb depreciation losses and, within limits, support distributions. A distribution that exceeds the investor's basis is an inclusion event, and distributions soon after an investment, especially debt-financed ones, need review under the disguised sale rules, so model them with counsel.⁷ Shareholders of a corporation get no basis from corporate debt. See debt and financing in Opportunity Zone projects for the mechanics.

A corporate QOF can still make sense. A REIT structure can suit a fund with thousands of investors who prefer a Form 1099 to a K-1, and some investors (for example, tax-exempt holders of other assets, or non-U.S. persons) have their own reasons to prefer a blocker. The tradeoff is that the exit must usually be a sale of shares, and buyers of real assets rarely want to buy a corporation with embedded tax history.

Almost every development fund uses a two-tier structure, because the QOZB tests are more forgiving and only a QOZB can use the working capital safe harbor. A QOF that owns property directly must hold 90% of its total assets in qualified property on its semiannual testing dates. A QOZB, by contrast, needs only 70% of its tangible property to be qualified opportunity zone business property, may hold cash under a written working capital plan for up to 31 months, and must keep nonqualified financial property below 5% of its assets.^1,2,12

The two-tier model adds paperwork: the QOZB needs its own books, a written working capital plan, annual testing and, under the proposed reporting regulations, its own information for the QOF's annual return. Those costs are small relative to the flexibility for a multi-year build. The detailed tests are in our guides to the QOF 90% asset test, the QOZB 70% tangible property test and the working capital safe harbor.

A single-asset fund holds one project and lets the investor choose exactly what they own; a multi-asset fund spreads the investment across several QOZBs. A third model, the fund-of-one, is a QOF formed by a single investor or family office that invests alongside a sponsor in one project. Each model has its own fee, control and reporting profile, compared in single-asset vs. multi-asset Opportunity Zone funds.

Two tax points push toward smaller, cleaner structures. First, the 10-year exclusion applies to the investor's QOF interest as a whole, so a multi-asset fund that sells one project early (before the investor reaches 10 years) produces gain that is not excluded. A QOF has 12 months to reinvest proceeds from a sale of qualifying property before they count against the 90% test, but that rule protects the asset test only; it does not defer the gain.¹⁵ Second, investors who each want their own five-year inclusion date and 10-year clock get one per investment date, so funds that call capital in tranches create several clocks for the same investor.⁸

A Qualified Rural Opportunity Fund (QROF) is a QOF that holds at least 90% of its assets in qualified opportunity zone property located in zones made up entirely of rural areas, and its investors receive a 30% basis step-up after five years instead of 10%.⁹ A rural area is any area other than a city or town with more than 50,000 people and the urbanized area next to it.⁹ Property in wholly rural zones also needs only 50% (not 100%) of the building's basis in improvements over 30 months to meet the substantial improvement test.⁹

The step-up applies to amounts invested on or after January 1, 2027. On a $1,000,000 deferred gain held five years, the taxable amount is $900,000 in a standard QOF and $700,000 in a QROF. At a 23.8% federal rate (20% long-term capital gains plus 3.8% net investment income tax), that is $214,200 versus $166,600 of tax: a $47,600 difference. A fund that wants QROF status must keep the 90% rural test across its whole portfolio, which in practice means a rural-only mandate. See what a Qualified Rural Opportunity Fund is.

A data center fund usually puts the land, building, substation and mechanical and electrical plant in a QOZB, and the key structuring question is how that QOZB earns its revenue. The regulations treat owning and operating real property, including leasing it, as an active trade or business, but merely entering into a triple-net lease is not.¹¹ A QOZB that leases an entire powered shell to one hyperscaler on triple-net terms is the textbook risk case.^10,11

• Operating QOZB: the QOZB runs the facility (power, cooling, security, remote hands) and sells capacity to tenants. This fits the active business requirement most naturally.
• Landlord QOZB with real operating services: a modified-gross or turnkey lease where the QOZB's employees run critical facilities. This is defensible on the right facts.
• Single-tenant triple-net powered shell: highest risk. It needs careful review by tax counsel before any OZ money goes in.
• Phased campus: each phase gets its own written working capital plan so cash for later phases does not outrun the 31-month schedule.

Who owns the IT equipment matters too. Servers owned by a tenant sit outside the QOZB's 70% test entirely, while servers owned by the QOZB count in both the numerator and denominator and turn over every five to six years, well inside a 10-year hold. Our guides to powered shell and triple-net data centers and how a data center Opportunity Zone fund works go deeper. OZ Data Centers sponsors funds that use the operating-QOZB model.

Read the structure chart in the private placement memorandum against five questions; a fund that answers all five clearly is well organized.

Fund scale is a useful reality check. GAO reported that QOFs held more than $108 billion in assets at the end of 2024, mostly in urban real estate, and Novogradac tracked $43.61 billion of equity raised by reporting funds through the first quarter of 2026.^13,14 Data center funds are a small, specialized slice of that market, so structure and tax counsel quality vary widely between sponsors. For the setup steps, see how to set up a Qualified Opportunity Fund.