IRC Section 721 Explained: The Statute Behind the UPREIT Path (Plain English for Real Estate Investors)

What Is the Full Text of IRC Section 721?

The full text of IRC Section 721^[1] is shorter than most investors expect. The provision that governs DST-to-UPREIT contributions:

"No gain or loss shall be recognized to a partnership or to any of its partners in the case of a contribution of property to the partnership in exchange for an interest in the partnership."

Source: 26 U.S.C. Section 721^[1], Legal Information Institute, Cornell Law School.

Subsections 721(b) and 721(c) carve out exceptions for investment companies and foreign-partner partnerships. Both are narrow. Treasury Regulation Section 1.721-1^[3] provides the operational rules. For most individual real estate investors contributing a DST interest to a domestic REIT's operating partnership, Section 721(a) is the only subsection that applies.

Section 721(a), Section 721(b), Section 721(c): Which Subsection Applies to You?

Three subsections live inside IRC Section 721. Only one matters for most real estate investors, but knowing the other two protects you from confusion when an advisor or offering document references them.

Section 721(a): The general nonrecognition rule. This is the provision quoted above. It applies to any contribution of property to any partnership in exchange for a partnership interest, with no cap on value and no restriction by asset type. A retail investor contributing a DST interest falls under Section 721(a), and so does an institutional owner contributing a $50 million apartment complex directly.

Section 721(b): The investment company exception. This subsection denies nonrecognition when the contribution results in a "diversification of the transferors' interests" and the partnership qualifies as an investment company. The purpose is to prevent unrelated investors from pooling appreciated securities into a partnership to diversify without recognizing gain. Real property is excluded from the definition of a "readily marketable" asset, so this exception rarely applies to real estate contributions. If your CPA raises it in a real estate context, the concern is usually a mixed-asset portfolio.

Section 721(c): The foreign partner exception. Added by the Taxpayer Relief Act of 1997, with Treasury regulations issued in 2017 and finalized in 2020, this subsection requires gain recognition when a U.S. person contributes appreciated property to a partnership that has a "related foreign partner." It is an anti-abuse provision aimed at cross-border structures. If every partner in the operating partnership is a U.S. person, Section 721(c) does not apply.

According to Anchor1031, the practical takeaway is this: if you are a U.S. individual contributing real estate or a DST interest to a domestic REIT's operating partnership, Section 721(a) governs your transaction. Your CPA should confirm you clear the exceptions, but most individual 721 contributions never trigger 721(b) or 721(c).

What Are the Four Exceptions to Section 721 Non-Recognition?

IRC Section 721(a) is broad, but it is not absolute. Four situations can cause the IRS to treat a partnership contribution as a taxable event rather than a deferred exchange.

1. Disguised sale under IRC Section 707(a)(2)(B)^[4]. If a partner contributes property and receives an unusual payout shortly afterward, the IRS can recharacterize the transaction as a sale. Two years is a presumption rather than a deadline, and it decides who carries the argument: inside two years the transfers are presumed to be a sale unless the facts show otherwise, and after two years the presumption runs the other way. Routine operating distributions are excluded from this analysis. For DST-to-UPREIT investors, this is one reason sponsors often plan a seasoning period, which varies by structure and offering and is not a statutory requirement.

2. Investment company under Section 721(b). As described in the subsection comparison above, this applies when the partnership would function as a diversification vehicle for securities. Real estate contributions are generally exempt, but confirm with your CPA if the partnership holds a mix of real property and marketable securities.

3. Services contributed in lieu of property. Section 721 applies to contributions of property, not services. A partner who receives a partnership interest in exchange for future labor (carried interest, sweat equity) recognizes income at receipt. This exception is common in private equity fund structures. It does not apply to DST investors contributing property interests.

4. Debt in excess of basis under IRC Section 752^[5]. When a partnership assumes liabilities associated with contributed property, the contributing partner's share of the liability is reduced. If the reduction exceeds the partner's basis in the contributed property, the excess is treated as gain. I bring this up with almost every investor who is contributing a property with significant debt, because the arithmetic is not obvious until you run it. As a simplified hypothetical, if your basis is $300,000 and the partnership assumes $500,000 in associated debt while your net share of partnership liabilities drops by $400,000, the $100,000 difference between the $400,000 relief and your $300,000 basis is taxable gain, even though no cash changed hands. The example leaves out state taxes and how a specific partnership allocates its liabilities, so actual outcomes depend on individual circumstances.

The first two exceptions are the ones every DST-to-UPREIT investor should discuss with their CPA and estate attorney before contributing.

Why Does Section 704(c) Matter After a 721 Contribution?

IRC Section 721 generally defers the gain at contribution, though exceptions can apply. IRC Section 704(c)^[6] makes sure the gain does not shift to someone else.

Here is how it works, using a simplified hypothetical that leaves out depreciation, debt, and state taxes. You contribute a property worth $1 million with an adjusted basis of $400,000. You have $600,000 of capital gain. Under IRC Section 723^[7], the partnership takes a carryover basis of $400,000 in that property. Under Section 704(c), the $600,000 gap between fair market value and basis must be allocated back to you, the contributing partner, when the partnership later sells the property or when you exit.

In plain English: the other partners do not absorb your deferred gain. The $600,000 follows you. If the operating partnership sells that property five years later for $1.2 million, the first $600,000 of gain allocated to you is your built-in gain from the original contribution. The remaining $200,000 is post-contribution appreciation shared among partners.

This tracking is the reason the deferral works fairly. Without Section 704(c), a contributing partner could push their deferred gain onto partners who contributed cash. The rule prevents that, and it means the investor needs to understand that the deferred gain is not an abstraction. It is a specific dollar figure, tracked on the partnership's books, and it will surface on a K-1 when a triggering event occurs.

What Are OP Units in a 721 Exchange?

OP units are the partnership interests you receive when you contribute property, or a DST interest, to a REIT's operating partnership under IRC Section 721. They are not REIT shares. The distinction is structural: OP units are interests in the operating partnership one layer below the REIT parent, while REIT shares are equity in the REIT itself. That structural difference is why a qualifying Section 721 contribution generally does not trigger immediate gain at the moment of contribution, though exceptions can apply: Section 721 defers gain only when you exchange property for an interest in a partnership, not for stock in a corporation.

OP units track the deferred gain to you under Section 704(c). During the hold, you receive distributions on a Schedule K-1 rather than the 1099-DIV that REIT shareholders receive. When you eventually convert OP units to REIT shares, subject to the partnership agreement's terms and restrictions, IRC Section 731 treats the exchange as a taxable event and the deferred gain surfaces. When you hold OP units until death, IRC Section 1014 resets the basis under current law and the deferred gain, including the underlying depreciation recapture, is eliminated for your heirs.

How Does Section 721 Make the DST-to-UPREIT Path Work?

IRC Section 721 is the legal foundation. Revenue Ruling 2004-86^[8] is the bridge. Together they make possible one potential route for individual investors, which involves a qualifying 1031 exchange into a DST followed by a possible contribution to an operating partnership. The DST route is not universal, and timing and availability depend on the structure.

Revenue Ruling 2004-86 established that a properly structured Delaware Statutory Trust qualifies as a trust for federal tax purposes, which means DST interests qualify as like-kind real property under IRC Section 1031^[9]. That ruling opened the first step: sell a property, 1031 into a DST, defer the gain.

The second step is Section 721. If the REIT sponsor absorbs the trust into its operating partnership when the DST matures, each DST investor contributes their beneficial interest in exchange for OP units. That contribution is a property-to-partnership exchange under Section 721(a), so the gain generally stays deferred, though exceptions can apply. There can be no promise or guarantee at the time of DST purchase that a 721 transaction will happen, a compliance point that every credible sponsor discloses and that Anchor1031 treats as the first test of any 721-eligible offering.

The investor-facing power of this two-step sequence is that it can let individual owners access institutional REIT portfolios through a tax-deferred pathway that was originally designed for large direct contributors, depending on offering terms, eligibility, and transaction approval. The step-by-step 721 process covers the documents and timeline, and our guide to how the UPREIT structure uses Section 721 explains how the operating partnership fits inside the REIT wrapper. For a balanced view, read the pros and cons of a 721 exchange.

How Can a Section 721 Contribution Get "Blown Up"?

Section 721 deferral is durable, but it is not bulletproof. Four scenarios cause investors to trigger gain they expected to defer.

Disguised sale timing. This rule targets an extraordinary payout shortly after you contribute, a lump sum that looks like sale proceeds rather than a distribution. Ordinary quarterly distributions on your OP units are not the concern: the regulations carve out normal operating cash flow, reasonable preferred returns, and guaranteed payments. According to Anchor1031, what matters is the timing of anything unusual, because within two years the burden of proving it was not a sale sits with you.

Phantom income from debt shifts. When the DST carries debt and the REIT assumes it, the debt-to-basis arithmetic under Section 752 can produce taxable gain even though no cash changes hands. This is the trap that catches investors who do not run the numbers before contributing. If the liability relief exceeds your basis, the excess is taxable, and you owe tax on money you never received.

Forced conversion at depressed NAV. In a 721 Required DST-to-UPREIT structure, the sponsor sets both the conversion timeline and the valuation. If the conversion occurs during a downturn, the investor receives OP units valued below what the property might have brought in an open market sale. The conversion itself is generally still tax-deferred under Section 721, though exceptions can apply. The economic outcome, however, may be worse than what a 721 Optional election would have allowed. The seven UPREIT downsides every owner should weigh covers forced conversion in detail.

Forgetting that OP units still carry the deferred gain. Section 704(c) tracks the built-in gain to the contributing partner. Some investors treat the receipt of OP units as the end of the tax story. It is not. The deferred gain sits on the partnership's books until conversion, sale, or a debt restructuring triggers recognition. The statute defers the tax. It does not erase it.

What Does a Real Investor's Section 721 Contribution Look Like?

Consider a simplified hypothetical. Sarah, 74, owns a rental building worth $1 million with an adjusted basis of $400,000. Her capital gain is $600,000. She is in the 32% marginal tax bracket.

At contribution: Assuming the sponsor completes a 721 transaction, Sarah contributes her DST interest to the REIT's operating partnership in exchange for OP units. Under IRC Section 721, a qualifying contribution generally does not trigger immediate gain, though exceptions can apply. Her $600,000 built-in gain carries into the OP units under Section 704(c). Tax owed at contribution: would generally be $0, assuming no disguised sale or debt-relief gain.

During the hold: Sarah receives distributions on her OP units, reported annually on a Schedule K-1. The character of each distribution (ordinary income, capital gain, return of capital) varies by year and by the REIT portfolio's activity. Distribution rates are not guaranteed and may vary.

Path A, conversion at year 5: Sarah converts her OP units to REIT shares. The conversion is a recognition event under IRC Section 731^[10]. Her $600,000 deferred gain becomes taxable. At the assumed 32% rate, the approximate federal tax would be $192,000. Some investors convert in stages across multiple tax years to manage the bill. Consult your CPA on timing, because actual outcomes depend on individual circumstances.

Path B, hold to death: Sarah holds her OP units for the rest of her life. At death, IRC Section 1014 resets the basis of the OP units to fair market value under current law, which eliminates the $600,000 deferred gain for her heirs. Congress has repeatedly proposed limits on basis step-up, so treat this as current law rather than a permanent promise. Confirm with your estate attorney. The full treatment of how OP units qualify is in our guide to step-up in basis on OP units.

The estate-planning power of holding OP units to death is one reason some investors choose the 721 path over continued DST swaps, even when the swap path preserves more optionality during their lifetime.

This example is a simplified hypothetical that applies one assumed 32% federal rate to the whole gain and does not reflect fees. Actual tax outcomes depend on individual circumstances, including state taxes, depreciation recapture, and the specific composition of the REIT portfolio.

Should You Keep Swapping DSTs or 721 Into a REIT?

Keep swapping DSTs if you want to pick each offering, preserve 1031 optionality, and accept a new decision every 5-7 years. The swap path keeps every door open, including the door to a future 721 if you change your mind later.

Cross into a REIT through a 721 if you want finality. No more sponsor research, no more identification deadlines, no more midnight calls about the property. The one-way door closes behind an owner who has decided they are done with active real estate decisions. The tax deferral can continue, the diversification broadens, and the estate plan may simplify, depending on offering terms, eligibility, and transaction approval.

According to Anchor1031, neither path is wrong. One is for the investor who still wants to be in the room when decisions are made. The other is for the investor who wants to walk out of that room permanently and know the equity is still working. Run the comparison with your CPA before signing, because the 721 is permanent.

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Frequently Asked Questions

Next Steps for the Investor Who Wants to Use Section 721

IRC Section 721 is the statute. The DST-to-UPREIT pathway is one potential way individual investors use it, depending on offering terms, eligibility, and transaction approval. The strategy can run from property sale to 1031 exchange, from 1031 to DST, and from DST to a possible contribution for REIT operating partnership units, with the deferred gain either coming due at conversion or ending at death under current law.

The right next step is not reading another statute. It is matching the strategy to your specific portfolio, basis, and estate plan. You can browse 721-eligible DST offerings to see what is available today, or schedule a Section 721 strategy consultation to walk through your timeline and conversion options with an advisor who knows the structure.

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