Investors looking to defer taxes on a gain often encounter several tools, and two that get compared are the Opportunity Zone fund and the 721 (UPREIT) exchange. They sound similar — both defer tax and involve pooled real estate — but they work very differently, serve different gains and goals, and produce different outcomes. An Opportunity Zone fund lets you defer almost any capital gain and, after a 10-year hold, make the new investment's appreciation tax-free. A 721 exchange lets a real estate owner contribute property to a REIT's operating partnership for OP units, gaining passive, diversified REIT exposure with deferral and a potential step-up at death. This guide compares the two — their basics, the gains eligible for each, income, liquidity and hold periods, the tax outcomes, and how to choose between them. Note that both areas involve technical, time-sensitive rules — verify the current rules with your tax and legal advisors; this is educational information, not tax, legal, or investment advice.
OZ funds vs. 721 exchange basics
At a basic level, these are two distinct structures. An Opportunity Zone fund is a Qualified Opportunity Fund you invest a capital gain into; the fund deploys capital into businesses or real estate in designated opportunity zones, you defer your original gain, and after a 10-year hold the new investment's appreciation can be tax-free. So an OZ fund is a gain-driven, zone-focused vehicle with a deferral-plus-exclusion benefit.
A 721 exchange (also called an UPREIT contribution) is a transaction in which a real estate owner contributes their property to a REIT's operating partnership in exchange for operating partnership (OP) units, under Section 721. The contribution is generally tax-deferred, the owner becomes a holder of OP units (and indirectly a participant in the REIT's diversified portfolio), and the OP units can typically be converted to REIT shares after a lock-up (a taxable event). So a 721 exchange is a real-estate-to-REIT contribution providing passive, diversified exposure with deferral.
So the basics differ fundamentally — an OZ fund invests a capital gain into zone property for deferral plus a tax-free exclusion, while a 721 exchange contributes real estate to a REIT for OP units and passive diversification. OZ funds vs. 721 exchange basics — the OZ fund being a gain-driven, zone-focused QOF investment with deferral and a 10-year exclusion, and the 721 exchange being a real-estate-to-REIT contribution for OP units providing passive, diversified exposure with deferral — establish two very different tools. They serve different starting points. Understanding the basics frames the comparison. An OZ fund invests a capital gain into opportunity-zone property (deferral plus a 10-year exclusion), while a 721 exchange contributes real estate to a REIT's operating partnership for OP units (passive diversification with deferral) — two distinct tools.
Eligible gains for each
The two tools differ sharply in what they can defer. An Opportunity Zone fund accepts virtually any capital gain — from stock, a business sale, cryptocurrency, real estate, or other capital assets — as long as it's the capital-gain portion (not ordinary income or recapture). So the OZ is broad: almost any capital gain can be redirected into a QOF within 180 days. This breadth is a defining OZ advantage.
A 721 exchange, by contrast, is fundamentally a real estate transaction — you contribute real property to a REIT's operating partnership. It is one-way and real-estate-based: you're contributing actual real estate (often property an owner already holds, or sometimes property acquired via a prior 1031 into a DST that later UPREITs). So the 721 deals in real property contributed to a REIT, not in arbitrary capital gains. Note that OP units received in a 721 are not themselves 1031-eligible (the 721 is generally a one-way road out of 1031 exchangeability).
So on eligible gains, the OZ is broad (almost any capital gain) while the 721 is narrow (real property contributed to a REIT). Eligible gains for each — the OZ fund accepting virtually any capital gain (stock, business, crypto, real estate; the capital-gain portion), and the 721 exchange being a real-estate-to-REIT contribution (real property, one-way, with OP units not 1031-eligible) — show a sharp divergence. The OZ is broad; the 721 is real-estate-specific. Understanding the eligible gains shows who can use each. The OZ defers almost any capital gain (stock, business, crypto, real estate), while the 721 contributes real property to a REIT for OP units — so the OZ is broad and gain-driven, the 721 narrow and real-estate-based.
The cleanest way to tell these tools apart is by the door you walk in through: the Opportunity Zone takes almost any capital gain, while the 721 takes real estate and only real estate.
Income, liquidity & hold periods
The investor experience — income, liquidity, and hold period — also differs. Income: a 721/UPREIT typically provides ongoing income through REIT distributions (the OP units generally entitle the holder to distributions akin to the REIT's dividends), so it can suit income-focused investors. OZ funds, often development vehicles, may emphasize appreciation over current income, with distributions varying by fund (some development funds pay little until stabilization).
Liquidity: a 721 into a publicly traded REIT can offer relative liquidity once OP units convert to REIT shares (which can be sold on the market, though conversion is taxable), so it provides an eventual liquidity path. OZ funds are illiquid private investments with limited or no secondary market, generally held to the fund's planned exit. Hold periods: the OZ's marquee benefit requires a 10-year hold; a 721's OP units have a lock-up (often around a year) before conversion, but the investment can be held long-term, with a step-up at death erasing the deferred gain.
So on income, liquidity, and hold, the 721 tends toward income and an eventual liquidity path, while the OZ tends toward appreciation, illiquidity, and a defined 10-year hold. Income, liquidity, and hold periods — the 721 offering REIT-distribution income and an eventual liquidity path (OP units converting to tradable REIT shares, a taxable event), versus the OZ's appreciation focus, illiquidity, and 10-year hold for the exclusion — distinguish the investor experience. The 721 leans income and liquidity; the OZ leans growth and a long hold. Understanding this shows the experiential difference. The 721 tends to offer income (REIT distributions) and eventual liquidity (convertible OP units), while the OZ emphasizes appreciation, illiquidity, and a 10-year hold — different investor experiences.
Tax outcomes compared
The tax outcomes are where the tools most clearly diverge. An OZ fund defers your original capital gain to a set recognition date (the original gain is still eventually taxed), and — its signature feature — makes the new investment's appreciation tax-free after a 10-year hold (an elective basis step-up to fair market value at sale). So the OZ's outcome is temporary deferral of the original gain plus permanent tax-free growth on the new investment.
A 721 exchange defers the gain on the contributed real estate (carryover basis into the OP units), and the deferral continues as long as you hold the OP units (converting to REIT shares is a taxable event that can trigger gain). Its powerful feature is the step-up in basis at death — if the OP units (or REIT shares) are held until death, heirs generally receive a stepped-up basis that can erase the deferred gain entirely. So the 721's outcome is deferral that can become permanent through the estate step-up, but with no separate tax-free-appreciation mechanism like the OZ's 10-year exclusion.
So the OZ offers deferral plus tax-free new-investment growth (after 10 years), while the 721 offers deferral that can be erased at death (carryover basis, step-up at death). Tax outcomes compared — the OZ deferring the original gain (still taxed at recognition) and making the new investment's appreciation tax-free after 10 years, versus the 721 deferring the contributed property's gain (carryover basis, conversion taxable) with a potential step-up at death erasing it — show two different tax paths. The OZ rewards a 10-year hold; the 721 rewards holding until death. Understanding the outcomes shows the tax difference. The OZ defers the original gain and makes new appreciation tax-free after 10 years; the 721 defers the property's gain with a possible step-up at death erasing it — two distinct tax outcomes. Verify the current rules with your tax advisor.
- OZ funds take almost any capital gain (stock, business, crypto, real estate); the 721 takes real property contributed to a REIT for OP units.
- The 721 tends toward income (REIT distributions) and eventual liquidity (convertible OP units); the OZ toward appreciation, illiquidity, and a 10-year hold.
- Tax: the OZ defers the original gain and makes new appreciation tax-free after 10 years; the 721 defers with a potential step-up at death erasing the gain.
- Choose by your starting gain and goals — broad-gain deferral with tax-free growth (OZ) vs. real-estate-to-REIT diversification, income, and estate planning (721).
Choosing between them
Choosing between an OZ fund and a 721 exchange depends mainly on your starting point and goals. The OZ fund fits an investor with a capital gain of almost any kind (stock, business, crypto, real estate) who wants to defer it and is willing to accept a long hold, illiquidity, and development risk in exchange for tax-free appreciation after 10 years. So the OZ suits a gain-driven, growth-oriented, patient investor.
The 721 exchange fits a real estate owner who wants to exit active ownership into passive, diversified REIT exposure — gaining income, relief from management, and estate-planning benefits (the step-up at death) while deferring the gain. So the 721 suits a real estate owner seeking passive diversification, income, and an estate-planning exit, rather than tax-free growth on a new gain. The two often aren't either/or for the same situation — they serve different starting points (any capital gain vs. owned real estate) and different goals (tax-free growth vs. passive income and estate planning).
So choose based on your gain type and objectives, ideally with your tax and legal advisors modeling the outcomes. Choosing between them — the OZ fund for an investor with almost any capital gain seeking deferral and tax-free 10-year growth (accepting illiquidity and development risk), and the 721 exchange for a real estate owner seeking passive, diversified REIT exposure with income and an estate-planning step-up — turns on your starting gain and goals. They serve different situations. Understanding the fit shows how to decide. Choose the OZ for broad-gain deferral with tax-free growth after 10 years, or the 721 for a real-estate-to-REIT exit offering passive income, diversification, and an estate step-up — based on your gain and goals, with professional guidance.
These tools rarely compete for the same investor. The question usually answers itself once you name the asset you're selling and the outcome you actually want from the next decade.
Other key differences to weigh
A few additional differences are worth weighing. Risk profile: OZ funds (often ground-up development in emerging areas) carry development and execution risk, while a 721 into an established, diversified REIT may carry more typical, diversified real estate risk (though REITs have their own market and interest-rate risks). So the underlying risk character differs. One-way nature: a 721 is generally a one-way road — once you hold OP units, they're not 1031-eligible, so you've left the 1031 universe; the OZ, similarly, is a commitment to the fund's path.
Geographic and asset constraints: OZ investments must be in designated zones and meet the program's property rules (original use or substantial improvement), constraining where and how capital is deployed; a 721 follows the REIT's existing, often diversified portfolio without zone constraints. Program permanence and evolution: the OZ program was recently made permanent and is evolving under the 2025 OZ 2.0 legislation (new zones, rolling deferral for post-2026 investments), so its rules are in transition; 721/UPREIT rules rest on longstanding partnership and REIT tax law.
So beyond gains, income, liquidity, and tax, the risk profile, one-way nature, geographic constraints, and program evolution further distinguish the tools. Other key differences to weigh — the differing risk profiles (OZ development risk vs. diversified REIT risk), the one-way nature of both (OP units not 1031-eligible; OZ a fund commitment), the OZ's zone and property constraints versus the REIT's diversified portfolio, and the OZ program's evolution under OZ 2.0 versus the 721's longstanding rules — round out the comparison. They affect the fit. Understanding them completes the picture. Beyond the headline factors, weigh the risk profiles, the one-way commitments, the OZ's zone constraints, and the OZ program's evolving rules — further distinctions between these two deferral tools. Verify the current rules with your advisors.
How Baker 1031 helps you compare
Baker 1031 Investments helps investors compare Opportunity Zone funds and 721 exchanges — understanding their basics, the gains eligible for each, the income, liquidity, and hold differences, the tax outcomes, and how to choose between them — so you can identify which tool (if either) fits your starting gain and your goals.
QOF interests and related securities, and 721/UPREIT-related investments, are offered through the broker-dealer, Aurora Securities, Inc. (member FINRA/SIPC), and any recommendation follows a suitability review (typically for accredited investors). We help you understand the structures and trade-offs and, where suitable, access OZ funds or 721/UPREIT opportunities aligned with your situation. We don't provide tax or legal advice — your CPA and attorney confirm your gain's eligibility, the tax outcomes, and the estate-planning implications, which are technical and time-sensitive — and we coordinate with them. Our role is to help you compare these very different tools accurately, recognize which serves your starting point (almost any capital gain vs. owned real estate) and your goals (tax-free growth vs. passive income and estate planning), and access suitable opportunities. The OZ and the 721 rarely compete for the same situation, and we help you see which (if either) is the right fit — coordinating with your tax and legal advisors so you decide with a clear, accurate understanding of each.
Frequently Asked Questions
What is the difference between an Opportunity Zone fund and a 721 exchange?
They are two very different tax-deferral tools. An Opportunity Zone fund is a Qualified Opportunity Fund you invest a capital gain into; the fund deploys capital into businesses or real estate in designated zones, you defer your original gain, and after a 10-year hold the new investment's appreciation can be tax-free. A 721 exchange (UPREIT contribution) is a transaction in which a real estate owner contributes property to a REIT's operating partnership for operating partnership (OP) units under Section 721, deferring the gain and gaining passive, diversified REIT exposure (with OP units convertible to REIT shares after a lock-up, a taxable event, and a potential step-up at death). So the OZ is a gain-driven, zone-focused vehicle offering deferral plus a tax-free exclusion, while the 721 is a real-estate-to-REIT contribution offering passive diversification, income, and an estate-planning step-up. They serve different starting points and goals. Verify the current rules with your tax and legal advisors.
What gains can I use for each?
An Opportunity Zone fund accepts virtually any capital gain — from stock, a business sale, cryptocurrency, real estate, or other capital assets — as long as it's the capital-gain portion (not ordinary income or recapture). So the OZ is broad: almost any capital gain can be redirected into a QOF within 180 days. A 721 exchange, by contrast, is fundamentally a real estate transaction — you contribute real property to a REIT's operating partnership, so it deals in real estate, not arbitrary capital gains. The 721 is also one-way: the OP units you receive are not themselves 1031-eligible. So on eligible gains, the OZ is broad (almost any capital gain) while the 721 is narrow (real property contributed to a REIT). This is one of the clearest distinctions — the OZ takes the gain from almost any sale, while the 721 takes real estate. Confirm your gain's eligibility with your tax advisor.
Which provides more income — OZ or 721?
Generally the 721/UPREIT tends to provide more current income. A 721 into a REIT typically entitles the OP-unit holder to ongoing distributions akin to the REIT's dividends, so it can suit income-focused investors. OZ funds, which are often development vehicles, may emphasize appreciation over current income — some development funds pay little until the project stabilizes, with distributions varying by fund. So if current income is a priority, the 721/UPREIT structure (or income-oriented funds generally) tends to fit better than a development-focused OZ fund. That said, income varies by the specific investment in both cases — some OZ funds target income-producing property, and REIT distributions depend on the REIT's performance. So the 721 leans toward income, the OZ toward appreciation, but evaluate the specific investment's income profile. Verify the income expectations and risks with the offering documents and your advisors.
Which is more liquid?
Generally the 721 offers more eventual liquidity. A 721 into a publicly traded REIT can provide relative liquidity once the OP units convert to REIT shares, which can be sold on the public market (though conversion itself is a taxable event). So there's an eventual path to liquidity. OZ funds, by contrast, are illiquid private investments with limited or no secondary market, generally held to the fund's planned exit around or after the 10-year mark. So if liquidity matters, the 721 (into a traded REIT) tends to offer a clearer path than an OZ fund. However, the 721's liquidity comes with a lock-up before conversion and a tax cost at conversion, and not all REITs are publicly traded. So neither is highly liquid in the short term, but the 721 into a traded REIT generally provides a more accessible eventual exit than an illiquid OZ fund. Verify the liquidity terms in the specific offering.
How do the tax outcomes compare?
They differ meaningfully. An OZ fund defers your original capital gain to a set recognition date (the original gain is still eventually taxed) and — its signature feature — makes the new investment's appreciation tax-free after a 10-year hold (an elective basis step-up to fair market value at sale). So the OZ's outcome is temporary deferral of the original gain plus permanent tax-free growth on the new investment. A 721 exchange defers the gain on the contributed real estate (carryover basis into the OP units), with the deferral continuing while you hold the OP units (converting to REIT shares is taxable), and a powerful step-up in basis at death that can erase the deferred gain entirely if held until death. So the OZ rewards a 10-year hold with tax-free new growth, while the 721 rewards holding until death with an estate step-up. Two distinct tax paths — verify both with your tax advisor.
What is the step-up at death in a 721 exchange?
The step-up at death is a powerful estate-planning feature of the 721/UPREIT path. When you contribute real estate to a REIT's operating partnership for OP units, you carry over your basis (deferring the gain). If you hold those OP units (or the REIT shares they convert into) until death, your heirs generally receive a stepped-up basis equal to the fair market value at your death — which can erase the deferred gain entirely, so it's never taxed. This makes the 721 attractive for investors using it as an estate-planning exit from active real estate, converting an illiquid, management-intensive property into passive, diversified REIT exposure that can pass to heirs with the gain wiped out. The OZ doesn't have this same mechanism (its benefit is the 10-year exclusion on new appreciation). So the step-up at death is a defining 721 advantage for estate planning — confirm how it applies to your situation with your tax and legal advisors, as these rules are technical.
Can I use a 721 for a stock or crypto gain?
No — a 721 exchange is fundamentally a real estate transaction. It involves contributing real property to a REIT's operating partnership in exchange for OP units, so it applies to real estate, not to stock, crypto, or other non-real-estate gains. If you have a stock, business-sale, or cryptocurrency gain and want to defer it, the Opportunity Zone fund is the relevant tool (it accepts almost any capital gain), not the 721. So the 721 won't help with a non-real-estate gain — that's precisely where the OZ's breadth is an advantage. So match the tool to your gain: a 721 for contributing real estate to a REIT, an OZ for deferring almost any capital gain (including stock and crypto). If your gain isn't from real estate, the 721 isn't an option, but the OZ may be. Confirm your gain's eligibility for the OZ with your tax advisor.
Which has a longer required hold?
Both involve long-term commitments, but in different ways. The OZ's marquee benefit (the tax-free exclusion) requires a 10-year hold from your investment date, so reaching that benefit means committing for a decade. A 721's OP units typically have a lock-up (often around a year) before they can convert to REIT shares, but the real estate planning power — the step-up at death — implies holding until death to fully erase the gain, which is effectively a very long (lifetime) hold. So the OZ has a defined 10-year hold for its exclusion, while the 721 has a shorter initial lock-up but rewards a lifetime hold for the estate step-up. Neither is a short-term play. So if you want to capture each tool's signature benefit, both require patience — the OZ for 10 years, the 721 ideally until death for the step-up. Verify the holding requirements and their tax effects with your advisors.
Are OP units from a 721 eligible for a 1031 exchange?
No — OP units received in a 721/UPREIT contribution are generally not 1031-eligible. The 721 is typically a one-way road: once you've contributed real estate to a REIT's operating partnership and hold OP units, you've left the 1031 universe (OP units are partnership interests, not real property, and aren't like-kind real estate for a future 1031). So you generally can't later 1031-exchange your OP units into other real estate. This is an important consideration — the 721 is often a final step (sometimes preceded by a 1031 into a DST that later UPREITs), trading future 1031 flexibility for passive REIT exposure and the estate step-up. So understand that a 721 generally ends your ability to do future 1031 exchanges with that capital. The OZ, similarly, is a commitment to the fund's path. So weigh the one-way nature of the 721 before contributing. Confirm the specifics with your tax advisor.
Which should I choose — OZ or 721?
It depends on your starting point and goals. The OZ fund fits an investor with a capital gain of almost any kind (stock, business, crypto, real estate) who wants to defer it and will accept a long hold, illiquidity, and development risk in exchange for tax-free appreciation after 10 years — so it suits a gain-driven, growth-oriented, patient investor. The 721 exchange fits a real estate owner who wants to exit active ownership into passive, diversified REIT exposure — gaining income, relief from management, and estate-planning benefits (the step-up at death) while deferring the gain. So choose based on your gain type and objectives: broad-gain deferral with tax-free growth (OZ) versus a real-estate-to-REIT exit with income, diversification, and an estate step-up (721). The two rarely compete for the same situation. Model the outcomes with your tax and legal advisors before deciding, as both involve technical, time-sensitive rules.
Can I do both an OZ and a 721?
In principle, an investor could use different tools for different assets — an OZ for a stock or business-sale gain, and a 721 for an exit from owned real estate — since they apply to different starting points. But you generally wouldn't use both for the same gain or property; each is a distinct path for a given asset. The OZ takes a capital gain into a QOF; the 721 contributes real estate to a REIT. So whether you use one, the other, or both across your portfolio depends on what assets you hold and what you want to accomplish with each. So they're not mutually exclusive at the portfolio level, but for any single gain or property you choose one path. So consider your whole situation — you might use an OZ for one gain and a 721 for a different real estate holding — with your advisors mapping each asset to the right tool. Verify the specifics for each transaction with your tax and legal advisors.
Is one tool riskier than the other?
They carry different risk profiles. OZ funds are often ground-up development in emerging areas, so they carry development and execution risk (construction, lease-up, business-plan execution) plus illiquidity and the program's evolving rules. A 721 into an established, diversified REIT may carry more typical, diversified real estate risk, though REITs have their own market, interest-rate, and management risks, and a publicly traded REIT's share price fluctuates. So the OZ's risk is concentrated and development-oriented, while the 721's is diversified but exposed to REIT-market dynamics. Neither is risk-free. So which is riskier depends on the specific investment and your perspective — the OZ may have higher project-level risk but the tax-free-growth upside, while the 721 offers diversification but market exposure and a taxable conversion. So weigh the risk profiles alongside the tax and income features. Evaluate the specific offerings and your risk tolerance with your advisors, and verify the current rules.
How does Baker 1031 help me compare?
We help you compare Opportunity Zone funds and 721 exchanges — understanding their basics, the gains eligible for each, the income, liquidity, and hold differences, the tax outcomes, and how to choose — so you can identify which tool (if either) fits your starting gain and goals. QOF interests and 721/UPREIT-related investments are offered through the broker-dealer, Aurora Securities, Inc. (member FINRA/SIPC), and any recommendation follows a suitability review (typically for accredited investors). We help you understand the structures and trade-offs and, where suitable, access OZ funds or 721/UPREIT opportunities aligned with your situation. We don't provide tax or legal advice — your CPA and attorney confirm your gain's eligibility, the tax outcomes, and the estate-planning implications — and we coordinate with them. We help you compare these very different tools accurately, recognize which serves your starting point and goals, and access suitable opportunities. The OZ and the 721 rarely compete for the same situation, and we help you see which (if either) is the right fit.
Glossary
- Opportunity Zone Fund
- A QOF investing a capital gain into zone property.
- 721 Exchange
- Contributing real estate to a REIT's operating partnership.
- UPREIT
- The umbrella-partnership REIT structure behind a 721.
- OP Units
- Operating partnership units received in a 721 exchange.
- REIT
- A real estate investment trust holding diversified property.
- Carryover Basis
- The original basis carried into the OP units.
- Step-Up at Death
- Heirs' basis reset that can erase the deferred gain.
- 10-Year Exclusion
- The OZ's tax-free appreciation after a decade.
- Capital-Gain Portion
- The OZ-eligible part of a gain (not ordinary income).
- One-Way Exchange
- The 721's nature: OP units aren't 1031-eligible.
- Lock-Up Period
- The wait before OP units convert to REIT shares.
- Conversion
- Exchanging OP units for REIT shares (a taxable event).
- Passive Exposure
- Hands-off, diversified REIT participation via the 721.
- Development Risk
- Construction and execution risk in OZ development funds.
- Deferral
- Postponing the tax on a gain (both tools provide it).
- Recognition Date
- When the OZ's deferred original gain is taxed.
Sources & References
- IRS. Opportunity Zones Frequently Asked Questions
- Cornell Legal Information Institute. 26 U.S. Code § 1400Z-2 — Special rules for capital gains invested in opportunity zones
- Cornell Legal Information Institute. 26 U.S. Code § 721 — Nonrecognition of gain or loss on contribution
- Cornell Legal Information Institute. 26 U.S. Code § 1031 — Exchange of real property held for productive use or investment
Disclosures
This article is published by Baker 1031 Investments, LLC for general educational purposes for accredited investors and is not an offer to sell or a solicitation of an offer to buy any security, nor is it tax, legal, accounting, or investment advice or a recommendation. Any securities offering is made solely through a sponsor’s private placement memorandum (PPM) following a suitability determination. Securities offered through Aurora Securities, Inc. (ASI), member FINRA / SIPC; Baker 1031 Investments is independent of ASI.
Oil & gas mineral and royalty interests and DST programs are speculative, illiquid securities sold only to verified accredited investors and involve substantial risk, including possible loss of principal, commodity-price and production-decline risk, lack of control, and the risk that an intended 1031 exchange fails to qualify for tax deferral. Whether a particular interest qualifies as like-kind real property is a fact-specific legal determination that varies by state and by the terms of the instrument. Tax results depend on your individual circumstances. Consult your own CPA and attorney before acting. Past performance does not guarantee future results.
