1031 Exchange and DST Investing: A Complete 2026 Guide

Every year, thousands of landlords, retiring small-business owners, and heirs of long-held rental property run into the same wall: they want to sell an appreciated property, but the tax bill on the sale would gut the proceeds they’d have left to reinvest. Section 1031 of the Internal Revenue Code has offered a way around that wall since 1921, and it remains one of the few tools in the tax code that lets an individual investor defer a six- or seven-figure gain legally, repeatedly, and indefinitely.

What has changed is not the core statute — Congress narrowed it in 2017 to cover only real property, and it has stayed that way since — but the range of vehicles investors can use to satisfy it. Delaware Statutory Trusts have gone from a niche workaround for institutional sponsors into a mainstream option that regional broker-dealers, wirehouses, and independent real estate investment platforms actively market to exchangers who are tired of fixing furnaces at 11 p.m. Combined with elevated commercial mortgage rates, tighter underwriting on small multifamily loans, and an aging population of landlords looking to step back from active management, DSTs have become the default answer for a large slice of the exchange market.

Why This Matters Right Now

Three forces are converging in 2026 that make the mechanics of 1031 exchanges and DSTs more relevant than they were even five years ago.

First, a wave of Baby Boomer-owned rental property is changing hands. Many of these owners bought duplexes, small strip centers, or fourplexes decades ago at basis levels a fraction of today’s market value. Selling outright would trigger enormous depreciation recapture and capital gains exposure. Exchanging into a DST lets them convert an active, illiquid, management-heavy asset into a passive income stream without writing a check to the IRS.

Second, financing conditions have made small-balance commercial and residential-investment loans harder to underwrite quickly, which matters enormously inside the unforgiving 45-day identification clock. A DST interest can typically close in days because the debt, if any, is already placed at the trust level — there is no individual loan application, appraisal contingency, or rate lock to coordinate against a hard deadline.

Third, the tax law that reshaped bonus depreciation in 2025 renewed interest in cost-segregation-heavy real estate strategies generally, and many DST sponsors structure offerings around assets — self-storage, industrial, medical office, build-to-rent housing — where accelerated depreciation on personal-property and land-improvement components can meaningfully shelter the trust’s distributable income, even though the real property itself still depreciates on the standard schedule.

The Core Mechanics of a Section 1031 Exchange

Before layering a DST on top, it helps to be precise about what a 1031 exchange actually requires, because the DST only solves one part of the puzzle — sourcing a compliant replacement property fast enough.

Like-Kind Real Property, Held for Business or Investment

Since the Tax Cuts and Jobs Act eliminated personal-property exchanges effective 2018, Section 1031 now applies exclusively to real property. “Like-kind” is interpreted broadly within that category: a farm can exchange into an apartment building, a warehouse can exchange into raw land, and a single-family rental can exchange into a fractional DST interest in a national retail portfolio. The property must be held for productive use in a trade or business or for investment — a primary residence does not qualify, and a property flipped for quick resale generally does not either, because it isn’t held with investment intent.

The Qualified Intermediary Requirement

An exchanger can never touch the sale proceeds. If the seller receives the cash directly, even briefly, the exchange is disqualified under the doctrine of constructive receipt. Instead, a qualified intermediary (QI) — an independent third party unrelated to the exchanger — holds the funds in escrow between the sale of the relinquished property and the purchase of the replacement property. Choosing a QI with fidelity bond coverage and segregated, FDIC-insured accounts matters more than most exchangers realize, since QI insolvency has wiped out exchange funds in past cycles.

The 45-Day Identification Window and the 200% and 95% Rules

The clock starts the day the relinquished property closes, not the day the investor decides to sell. Within 45 calendar days, the exchanger must identify potential replacement properties in writing to the QI. Most exchangers use the three-property rule, naming up to three properties of any value. Fewer people use the 200% rule, which allows identifying more than three properties as long as their combined fair market value doesn’t exceed 200% of the value of what was sold, or the rarely used 95% rule, which allows unlimited identifications as long as 95% of the identified value is actually acquired.

The 180-Day Exchange Period

The purchase of the replacement property must close within 180 calendar days of the relinquished property’s sale, or by the due date of the exchanger’s tax return for that year (including extensions), whichever comes first. There is no extension for a slow closing, a financing delay, or a title dispute — missing the deadline by even a day collapses the entire exchange and the gain becomes taxable in the year of the original sale.

What a Delaware Statutory Trust Actually Is

A Delaware Statutory Trust is a legal entity formed under Delaware’s trust statute that holds title to one or more properties on behalf of multiple beneficial owners. Each investor buys a beneficial interest in the trust, not a direct deed interest in the underlying real estate, yet the IRS treats that beneficial interest as real property for 1031 purposes under a set of conditions the agency laid out in Revenue Ruling 2004-86.

Why the IRS Treats a DST Interest as Real Property

Ordinarily, an interest in a trust or partnership does not qualify for 1031 treatment, because it’s treated as personal property — an interest in an entity, not in the dirt itself. Revenue Ruling 2004-86 carved out a narrow exception for trusts that meet a specific list of restrictions, often nicknamed the “seven deadly sins” of DST structuring. A qualifying DST cannot: accept additional capital contributions after the initial offering closes; renegotiate the terms of existing loans or borrow new money once the offering is sold out; reinvest sale proceeds from the property into new real estate; enter into new leases or materially renegotiate existing ones, other than for a bankrupt or insolvent tenant, without unanimous investor consent; make capital improvements beyond routine maintenance and minor, non-structural upgrades; hold cash reserves in anything other than short-term, low-risk instruments between distributions; and distribute all net cash generated by the property, rather than retaining earnings.

These restrictions exist precisely so that the trust behaves as a passive holder of real estate rather than an operating business, which is what preserves its status as “real property” in the eyes of the tax code. The tradeoff for investors is total loss of operational control — a DST beneficial owner cannot vote to fire the property manager, approve a lease, or refinance the debt. The trustee, appointed by the sponsor, runs the asset for the life of the trust.

Fractional Ownership and the 100-Investor Practical Ceiling

DST offerings are securities, sold under Regulation D private placement exemptions, almost always to accredited investors, and typically distributed through a licensed broker-dealer. Minimum investments commonly range from $25,000 to $100,000, which lets an exchanger split a single relinquished property’s proceeds across several DSTs holding different property types and geographies — something almost impossible to do with a directly owned replacement property. Most sponsors cap the number of investors per trust well below the statutory limits to keep the offering manageable and to preserve reasonable minimums, and a single DST can end up owned by anywhere from a handful of investors to several hundred.

Master Leases and How Debt Gets Assigned to Investors

Many DSTs are structured with a master lease between the trust and an affiliate of the sponsor, which simplifies cash flow and gives the trust a predictable income stream even if underlying tenants have variable performance. When a DST carries a mortgage — and many do, financed at the trust level before the offering launches — each investor’s pro-rata share of that debt is treated, for tax purposes, as if the investor personally borrowed that amount. This detail matters enormously for exchangers trying to satisfy the debt-replacement rule described below, because a leveraged DST lets a small investor absorb a proportional debt obligation without ever signing a loan document or qualifying with a lender.

Boot, Depreciation Recapture, and the Debt-Replacement Trap

Full tax deferral in a 1031 exchange requires meeting two tests simultaneously: the exchanger must reinvest all of the net equity from the sale, and must acquire replacement property with a value equal to or greater than the value of what was sold, while replacing any debt that was paid off (or making up the difference with additional cash).

Cash Boot

Any exchange proceeds that end up in the exchanger’s pocket rather than reinvested — sometimes because a replacement property closed under budget, or because the exchanger simply pulled some cash out — are called “cash boot,” and that amount is taxable in the year of the exchange, even though the rest of the gain stays deferred.

Mortgage Boot (Debt-Relief Boot)

Less intuitively, reducing debt also creates boot. If an exchanger pays off an $800,000 mortgage on the relinquished property but only takes on $500,000 of new debt on the replacement side, the $300,000 difference is treated as boot — as if the exchanger had received that amount in cash — unless it’s offset with additional cash invested into the deal. This is the single most common way well-intentioned exchangers accidentally generate a tax bill: they successfully avoid cash boot but still owe tax because their new debt load is smaller than their old one.

Depreciation Recapture Doesn’t Disappear, It Carries Forward

A 1031 exchange defers recognition of both the capital gain and the accumulated depreciation recapture; it doesn’t erase either. The replacement property inherits the relinquished property’s adjusted basis (carried-over basis), plus any additional amount invested above the amount realized. When the replacement property is eventually sold outside of another exchange, both the original deferred gain and any new appreciation become taxable at that time, with the recapture portion still taxed separately from the capital-gain portion.

A Worked Example: Selling a Rental Duplex and Splitting Into a Direct Property and a DST

Numbers make this concrete. Consider an investor who bought a small apartment building a decade ago for $900,000, put in $50,000 of capital improvements over the years, and has claimed $350,000 of depreciation. Her adjusted basis is therefore $600,000.

She sells the property for $2,000,000. Selling costs (commissions, transfer taxes, closing fees) run $120,000, leaving an amount realized of $1,880,000. An existing $800,000 mortgage is paid off at closing, so the qualified intermediary receives net equity of $1,080,000 to hold for the exchange.

To defer the entire $1,280,000 gain, she needs to acquire replacement property worth at least $1,880,000 total, reinvest the full $1,080,000 of net equity, and replace the $800,000 of retired debt. Within her 45-day window, she identifies two properties under the three-property rule:

• Property A — a directly owned 24-unit apartment building priced at $1,400,000, financed with a new $800,000 acquisition loan and $600,000 of exchange equity.
• Property B — a beneficial interest in a Delaware Statutory Trust holding a portfolio of grocery-anchored retail centers, requiring $480,000 of equity and closing nine days after she wires funds, well inside the 180-day deadline.

Total replacement value: $1,880,000. Total new debt: $800,000. Total equity reinvested: $1,080,000. Every threshold is met exactly, so the exchange defers the full $1,280,000 gain with zero boot.

Now compare a variant: suppose the DST placement falls through and she only closes on Property A. Total replacement value drops to $1,400,000 against an amount realized of $1,880,000 — a $480,000 shortfall. That $480,000 becomes taxable boot in the year of sale, taxed first against the unrecaptured Section 1250 gain and then against the remaining capital gain, even though she successfully deferred the rest. This is exactly the scenario DSTs are built to prevent: a small, precisely sized allocation that can close on short notice and absorb whatever equity a directly owned property purchase doesn’t use up.

Minimum Investment: DST vs. Tenants-in-Common vs. Direct Ownership

One reason DSTs have grown so quickly as a 1031 landing spot is the entry-point gap between them and the alternatives.

Comparing the Three Structures Side by Side

Common Mistakes Exchangers Make With DSTs

Waiting Too Long to Line Up a Qualified Intermediary

The QI agreement has to be in place before the relinquished property closes. An exchanger who sells first and calls a QI afterward has already blown the exchange — the funds went to the seller directly, and constructive receipt has occurred.

Treating the 45-Day Identification as a Soft Deadline

It isn’t. Identification must be in writing, delivered to the QI (or another party to the exchange, per the regulations), and unambiguous about which properties are being named. A verbal mention to a broker doesn’t count.

Not Checking Sponsor Track Record and Fee Load

DST sponsors charge acquisition fees, asset management fees, and disposition fees that can total 8-12% of equity raised across the life of the offering. Two DSTs holding similar property types can produce materially different net returns purely because of fee structure. Reading the private placement memorandum’s fee table matters as much as evaluating the real estate itself.

Overlooking the Loss of Control

Some exchangers discover only after closing that they cannot vote to replace an underperforming property manager, approve a new lease, or force a sale before the sponsor decides to exit. If retaining some decision-making authority matters, a TIC structure or a directly owned property may be a better fit despite the larger check size.

Forgetting About the Debt-Replacement Rule

As shown in the worked example above, exchangers frequently reinvest all of their cash but still end up with mortgage boot because their new debt load doesn’t match what was paid off. A DST with debt already baked in at the trust level is one of the more reliable ways to solve this without personally qualifying for a new loan.

Assuming Liquidity Exists Where It Doesn’t

DST interests are illiquid securities. There’s no public market to sell into if personal circumstances change; a secondary market exists but transactions are infrequent and often occur at a discount.

Practical Checklist Before Exchanging Into a DST

• Engage a qualified intermediary and sign the exchange agreement before the relinquished property closes.
• Confirm the sale will produce an amount realized and adjusted basis that make deferral worthwhile — small gains may not justify the complexity and fees.
• Calculate the exact equity and debt-replacement targets needed to avoid cash boot and mortgage boot.
• Request the private placement memorandum for any DST under consideration and review the fee schedule, leverage level, tenant concentration, and lease expiration schedule.
• Verify accredited investor status with the broker-dealer or registered investment advisor placing the DST.
• Identify replacement properties in writing within 45 days, using the three-property, 200%, or 95% rule as appropriate.
• Confirm the DST’s projected closing date leaves a comfortable buffer before the 180-day deadline.
• Ask how the sponsor has handled prior full-cycle dispositions, including whether targeted holding periods were met.
• Discuss with a CPA how the carried-over basis and depreciation recapture will be treated in the replacement property’s records.
• Plan for the eventual exit — a later sale, another 1031 exchange into a new DST, or a step-up in basis at death.

Key Takeaways

• Section 1031 defers, rather than eliminates, tax on real estate gains — the deferred gain and depreciation recapture carry over into the replacement property’s basis.
• The 45-day identification and 180-day closing deadlines are fixed by statute and are not extended for financing, title, or appraisal delays.
• A Delaware Statutory Trust interest qualifies as like-kind real property under Revenue Ruling 2004-86, provided the trust follows a strict set of passive-ownership restrictions.
• Full deferral requires reinvesting all net equity, acquiring replacement value equal to or greater than the amount realized, and replacing any debt that was paid off.
• DSTs are commonly used to solve small equity gaps or debt-replacement shortfalls that are hard to fill with a directly owned property inside the exchange deadlines.
• DST investors give up operational control entirely; the trustee, not the beneficial owners, runs the property.

The rise of DSTs also reflects a broader shift already underway across institutional real estate portfolios, where large allocators have been reallocating toward professionally managed, passively held property structures rather than direct, operator-intensive ownership — a trend that individual exchangers are now able to access at a much smaller check size than was possible even a decade ago.

Frequently Asked Questions

What is a 1031 exchange and what does it defer?

A 1031 exchange is a transaction under Section 1031 of the Internal Revenue Code that allows an investor to sell real property held for business or investment use and reinvest the proceeds into another like-kind real property, deferring both the capital gains tax and the depreciation recapture tax that would otherwise be due in the year of sale.

How does a Delaware Statutory Trust qualify as 1031 replacement property?

The IRS confirmed in Revenue Ruling 2004-86 that a beneficial interest in a Delaware Statutory Trust can be treated as real property for 1031 purposes, as long as the trust follows a strict list of restrictions, including no new capital contributions after the offering closes, no new borrowing, no reinvestment of sale proceeds into new property, and mandatory distribution of net cash to investors.

What are the 45-day and 180-day deadlines in a 1031 exchange?

The exchanger has 45 calendar days from the closing of the relinquished property to identify potential replacement properties in writing, and 180 calendar days from that same closing date (or the tax return due date, if earlier) to close on the purchase of the replacement property. Both deadlines are strict and are not extended for financing or closing delays.

What is boot in a 1031 exchange and how does it get taxed?

Boot is any value received in the exchange that isn’t reinvested into replacement real estate — either cash that isn’t reinvested (cash boot) or a reduction in debt that isn’t replaced with new debt or additional cash (mortgage boot). Boot is taxable in the year of the exchange, generally taxed first against depreciation recapture and then against remaining capital gain, even while the rest of the transaction’s gain stays deferred.

Can I combine a directly owned replacement property with a DST interest in the same exchange?

Yes. Many exchangers split their proceeds between a directly owned property and one or more DST interests, using the DST portion to absorb a remaining equity or debt-replacement gap that a directly owned property purchase alone doesn’t fully solve, particularly when timing inside the 45-day and 180-day windows is tight.

What happens if I never complete another 1031 exchange and just hold the property until death?

If an exchanger holds the final replacement property until death rather than selling it, the property typically receives a step-up in basis to its fair market value at death under current estate tax rules, which can eliminate the deferred capital gains tax and depreciation recapture entirely for the heirs, a strategy often referred to informally as “swap until you drop.”

References

• Internal Revenue Service: Publication 544, Sales and Other Dispositions of Assets
• Internal Revenue Service: Like-Kind Exchanges Under IRC Code Section 1031
• Internal Revenue Service: Revenue Ruling 2004-86, governing the tax treatment of Delaware Statutory Trusts as like-kind replacement property
• Cornell Law School Legal Information Institute: 26 U.S. Code Section 1031, Exchange of Real Property Held for Productive Use or Investment
• Delaware Department of State, Division of Corporations: Delaware Statutory Trust Act, Title 12, Chapter 38
• U.S. Securities and Exchange Commission: Accredited Investor Definition and Requirements