Like-Kind Exchange Scope After Reform: What Section 1031 Still Covers

A real estate investor selling an office building today faces a much narrower version of Section 1031 than someone who sold the same building a decade ago. The mechanics of deferring tax on a swap of property go back to 1921, but the scope of what counts as eligible property changed dramatically with the 2017 tax law commonly known as the Tax Cuts and Jobs Act. That law didn’t touch the core deferral concept for real estate, but it stripped out an entire category of transactions that used to qualify: exchanges of equipment, franchise licenses, aircraft, artwork, and other tangible personal property.

That change matters more now than it did in the first year or two after the reform, because the businesses that used to structure personal-property exchanges have had years to adjust — and many still stumble into the assumption that a trade-in of, say, farm equipment or a fleet of trucks still gets 1031 treatment. It does not. Meanwhile, the real estate side of the rule has become more heavily used and more heavily scrutinized, since it’s now the only game in town for deferring gain through an exchange rather than a sale. Investors who also lean on other real estate income strategies to build long-term wealth often run into a 1031 decision at the exact moment they’re trying to reposition a portfolio, so understanding exactly where the boundary lines sit isn’t an academic exercise.

Why the Scope Question Got So Much More Complicated

Before 2018, Section 1031 covered a wide universe of “like-kind” property: real estate, sure, but also equipment, collectibles, intellectual property licenses, and even some intangible business assets. The definition of “like-kind” for personal property was notoriously loose — a fleet of delivery vans could be exchanged for a different fleet, and gain on the trade-in value was deferred rather than recognized. Congress eliminated that entire branch of the statute in the 2017 tax overhaul, effective for exchanges completed after December 31, 2017 (with a narrow transition rule for exchanges already underway).

What survived is real property, defined broadly but not infinitely. Land, buildings, and certain permanent structures on land still qualify. So do many long-term leasehold interests and specific categories of intangible rights tied to real estate, which is where a lot of the current confusion lives. The IRS and Treasury have since issued regulations clarifying what “real property” means for these purposes, and the definition leans heavily on state law characterization combined with a functional test of whether the asset is permanently affixed to land or is an inherently permanent structure.

The practical effect is that the pool of eligible transactions shrank, but the ones that remain eligible get scrutinized more closely. A cost segregation study that reclassified part of a building into personal property for depreciation purposes now creates a real question at exchange time: does that reclassified component still ride along in the exchange, or does it need to be treated separately? That tension between accelerated depreciation strategies and 1031 eligibility is one of the more technical wrinkles advisors have to walk clients through today.

What Still Qualifies: The Real-Property-Only Scope

Real Property vs. Personal Property After the 2017 Reform

Under the current rule, eligible property must be real property held for productive use in a trade or business or for investment, exchanged for real property of the same character. The regulations define real property to include land and improvements to land, unsevered natural products of land, and certain water and air rights. Improvements include buildings, structural components, and other inherently permanent structures — think parking structures, permanent greenhouses, and in-ground irrigation systems that are integral to the land’s use.

Personal property attached to a building — movable partitions, certain machinery used in a manufacturing process, decorative fixtures that aren’t structural — generally falls outside the definition even though it might sit inside a qualifying building. This distinction rarely mattered under the old rules because personal property could be exchanged on its own. Now, if a portion of a sale price is allocated to non-qualifying personal property, that portion is simply outside the exchange and produces immediately recognized gain (or loss), regardless of what happens with the real property portion.

Intangible Real-Property Interests That Still Count

Several categories of intangible interests survive as eligible “real property” if state law treats them as real property interests: fee simple interests obviously qualify, but so do many leasehold interests with 30 years or more remaining (including renewal options), easements, and certain mineral, oil, and gas interests that are treated as real property under the applicable state’s law. Co-ownership interests such as tenancy-in-common shares in real estate can also qualify, which is part of why some investors use fractional ownership structures — often paired with a Delaware statutory trust — to complete an exchange when they can’t find a single replacement property large enough to absorb their proceeds.

One area that trips people up: transferable development rights, air rights, and certain water rights can qualify as real property in some states and not in others, since the federal test borrows from state-law characterization. An investor moving proceeds between states should not assume that an interest treated as real property in the state where the relinquished property sits will automatically be treated the same way in the state where the replacement property sits.

The Two Clocks That Can Kill an Exchange: 45 Days and 180 Days

Two deadlines run from the day the relinquished property closes, and both are measured in calendar days, not business days, with no extensions for weekends or federal holidays (short of a formally declared disaster postponement). Miss either one and the exchange collapses into a taxable sale.

The identification period runs 45 days from the closing date of the relinquished property. Within that window, the taxpayer must identify potential replacement property in a written notice delivered to the qualified intermediary or another party involved in the exchange — not simply thought about, not verbally mentioned to a broker, but documented and unambiguously described (typically by legal description or street address).

Identification Rules: The Three-Property and 200% Tests

The identification rules allow flexibility through two main tests. Under the three-property rule, a taxpayer can identify up to three replacement properties regardless of their combined value. Under the 200% rule, a taxpayer can identify more than three properties as long as their combined fair market value doesn’t exceed 200% of the value of the relinquished property. There’s also a 95% exception allowing identification of any number of properties regardless of value, provided the taxpayer actually acquires at least 95% of the aggregate value identified — a test almost nobody relies on because it leaves no margin for a deal falling through.

The exchange period then runs 180 days from the same closing date (not 180 days after the identification period ends), and the replacement property must be received by the earlier of that 180th day or the due date of the taxpayer’s tax return for the year of the transfer, including extensions. That return-due-date trap catches people who close late in the calendar year and don’t file an extension — a sale in November leaves fewer than 180 days before the following April filing deadline unless the taxpayer extends the return.

What Happens If You Miss a Deadline

There’s no administrative relief for a routine missed deadline. If the 45-day identification isn’t made properly, the entire exchange fails and the transaction is treated as a straight sale, with gain recognized in the year of the original closing. If replacement property is identified correctly but not acquired within 180 days, the same result follows — the qualified intermediary returns the held funds (usually early in the following tax year, given how escrow timing works, which can create a whole separate problem of taxable income in a year the taxpayer didn’t expect it).

Why a Qualified Intermediary Is Non-Negotiable

An exchange only defers gain if the taxpayer never has actual or constructive receipt of the sale proceeds. That’s the core rule, and it’s why a qualified intermediary — an independent party with no other relationship to the taxpayer — has to hold the funds between the sale of the relinquished property and the purchase of the replacement. If proceeds pass through the taxpayer’s own hands, even briefly, the exchange typically fails regardless of intent.

A qualified intermediary cannot be the taxpayer’s employee, attorney, accountant, real estate agent, or anyone who has acted in one of those capacities for the taxpayer within the two years before the exchange (with narrow exceptions for routine title, escrow, or attorney work unrelated to the exchange itself). Choosing one deserves real diligence: intermediaries hold large sums of client money in escrow-like accounts, and the industry has seen intermediary failures and even fraud cases that wiped out client funds entirely. Look for a qualified intermediary that carries fidelity bond coverage and errors-and-omissions insurance, keeps exchange funds in segregated, qualified escrow accounts (not commingled with operating funds), and provides written assurances about how interest on held funds is handled. A cheap fee quote from an intermediary with no audited financials is not a bargain if the funds aren’t there when it’s time to close on the replacement property.

Boot, Partial Exchanges, and the Mechanics of Taxable Gain

Very few exchanges are perfectly even trades. Whenever the taxpayer receives something other than qualifying like-kind real property — cash left over, personal property thrown into the deal, or a reduction in debt that isn’t matched by new debt or added cash — that value is called boot, and it triggers recognized gain up to the amount of the boot, even though the exchange as a whole still qualifies for partial deferral.

There are two flavors worth separating. Cash boot is straightforward: any exchange proceeds not reinvested into the replacement property, returned to the taxpayer at the end of the exchange period, count as boot. Mortgage boot (also called debt relief boot) is more commonly misunderstood: if the debt paid off on the relinquished property exceeds the debt taken on for the replacement property, that net reduction in liabilities is treated as boot, because it functions economically like receiving cash — the taxpayer’s balance sheet obligations dropped without a matching cash outlay. Debt relief boot can be offset by contributing additional cash to the deal, but it cannot be offset by cash boot going the other direction; the two categories aren’t netted against each other in the taxpayer’s favor. A taxpayer who takes on more debt on the replacement property than they had on the relinquished one doesn’t get an extra deduction — excess debt assumed simply doesn’t help; it just isn’t boot.

The amount of gain recognized from boot equals the lesser of the boot received or the total realized gain, which means an exchange can never trigger more tax than an outright sale would have, only a portion of it. Basis carries forward on the deferred amount, which sets up the depreciation recapture questions covered later.

Worked Example: A Warehouse Sale With a Partial Cash-Out

Consider an investor who has owned a single warehouse for twelve years. The original purchase price plus improvements totals $700,000, and cumulative depreciation deductions of $200,000 bring the adjusted basis down to $500,000. The property now sells for a net price of $1,150,000 after selling costs, and an existing mortgage of $300,000 is paid off at closing.

• Realized gain: $1,150,000 − $500,000 = $650,000
• Net equity delivered to the qualified intermediary: $1,150,000 − $300,000 = $850,000

Within 45 days, the investor identifies a distribution facility priced at $1,000,000. The purchase closes on day 140 of the exchange period, financed with $700,000 of the held exchange funds and a new mortgage of $300,000 — the same debt level as before, so there’s no mortgage boot. That leaves $150,000 of exchange funds unused, which the qualified intermediary returns to the investor as cash boot once the exchange period closes.

Using a simplified blended rate of 30% (combining unrecaptured Section 1250 gain treatment with federal capital gains and a representative state tax, for illustration only — actual rates depend on the taxpayer’s bracket, depreciation history, and state of residence), the difference between the two paths looks like this:

The investor ends the transaction with $105,000 in after-tax cash (the $150,000 boot minus roughly $45,000 in tax on it) plus $700,000 of equity working in a new, larger warehouse — versus $655,000 in after-tax cash and no replacement property if they’d simply sold. Whether that trade makes sense depends entirely on whether the investor wants to keep operating in real estate or wants liquidity, which is a judgment call no tax rule can make for them.

Depreciation Recapture and Cost Segregation Complications

Depreciation taken on the relinquished property doesn’t disappear in an exchange — it carries forward embedded in the lower basis of the replacement property, which means the eventual recapture liability travels with the deferral rather than escaping it. Section 1250 property (real property) generally avoids the harsher ordinary-income recapture that applies to Section 1245 personal property, but unrecaptured Section 1250 gain — the portion attributable to straight-line depreciation — is still taxed at a rate up to 25% when it’s eventually recognized, whether that’s on the boot in the current exchange or on a future sale of the replacement property.

Cost segregation studies complicate this further. A study that reclassifies portions of a building into shorter-lived personal property components (certain carpeting, specialty electrical, decorative millwork) accelerates depreciation deductions during ownership, which is valuable on its own. But those reclassified components generally do not qualify as real property for exchange purposes under the post-2017 rules. If a taxpayer who did aggressive cost segregation on the relinquished property tries to fold the entire sale price into a 1031 exchange, the portion of value attributable to those personal-property components can be treated as boot or as a separate, fully taxable sale — even if the buyer and seller never separately itemized it that way in the purchase agreement.

The practical fix is to get an allocation of sale price between real property and any remaining personal-property components before closing, rather than discovering the issue on the tax return. Investors who ran cost segregation early in the hold period and have already recaptured most of the accelerated deductions through years of ordinary use face a smaller exposure than someone who cost-segregated shortly before selling.

Common Mistakes That Sink an Otherwise Good Exchange

Most failed exchanges don’t fail because the underlying real estate strategy was bad. They fail on process.

Treating the 45-day window as flexible is probably the single most frequent error — taxpayers assume they can identify property informally through a broker conversation and formalize it later, only to find the intermediary requires a specific, signed identification notice that never got delivered inside the window.

Assuming any co-investment structure counts as real property is another recurring trap. Partnership interests in an entity that owns real estate do not qualify for 1031 treatment, even though the entity itself owns qualifying property — only direct ownership interests (including tenancy-in-common and certain Delaware statutory trust interests) pass muster.

Underestimating debt replacement is a third one. Investors focus on matching or exceeding the sale price of the relinquished property but forget that the new mortgage also needs to match or exceed the old mortgage balance, or they need to bring cash to cover the shortfall — otherwise mortgage boot shows up as a surprise on the tax return.

Waiting too long to engage a qualified intermediary rounds out the list. The intermediary agreement needs to be in place before the relinquished property closes; bringing one in after the sale has already closed is generally too late to salvage deferral treatment.

Practical Checklist Before You Close

• Confirm the relinquished property qualifies as real property held for business or investment use, not primarily for personal use or as inventory (dealer property doesn’t qualify).
• Engage a qualified intermediary and sign exchange documents before the relinquished property closes — not after.
• Calendar day 45 and day 180 from the actual closing date, and build in a buffer of at least a week before each deadline for document delivery.
• Draft the written identification notice with specific legal descriptions or addresses, and deliver it to the intermediary (not just a broker or attorney) before day 45.
• Model the debt-replacement math early: new mortgage plus any added cash needs to equal or exceed the debt paid off on the relinquished property.
• Get a sale-price allocation between real property and any cost-segregated personal-property components before signing the purchase agreement.
• Decide in advance how any anticipated cash boot will be handled on the tax return, including estimated tax payments for the year of sale.
• Verify the qualified intermediary’s bonding, insurance, and fund-segregation practices before wiring a single dollar of proceeds.

Key Takeaways

• Personal property exchanges no longer qualify for deferral — only real property held for business or investment use is eligible since the 2017 reform.
• Two deadlines run concurrently from the closing date of the relinquished property: 45 days to identify replacement property, 180 days to close on it.
• A qualified, well-bonded intermediary must hold sale proceeds throughout the exchange period; any actual or constructive receipt by the taxpayer breaks the deferral.
• Boot — cash left over or a net reduction in mortgage debt — triggers recognized gain up to the amount of the boot, even in an otherwise valid exchange.
• Cost-segregated personal-property components generally fall outside the exchange, so sale-price allocation deserves attention before closing.

Frequently Asked Questions

Can I still do a 1031 exchange on equipment or vehicles?

No. Exchanges of personal property such as equipment, vehicles, artwork, and franchise licenses lost eligibility for like-kind exchange treatment starting with transactions completed after December 31, 2017. Only real property held for business or investment use still qualifies.

What counts as “real property” for a like-kind exchange today?

Land, buildings, and other inherently permanent structures qualify, along with certain long-term leaseholds, easements, and mineral or water rights that state law treats as real property interests. Movable fixtures and machinery inside a building, along with components separated out through a cost segregation study, generally do not qualify.

What happens if I miss the 45-day identification deadline?

The exchange fails entirely. The transaction is treated as an ordinary taxable sale, and the qualified intermediary returns the held proceeds, typically triggering full gain recognition in the year of the original sale.

Do the 45-day and 180-day periods run one after the other?

No, they run concurrently from the same closing date. The 180-day exchange period is not extended by the length of the 45-day identification window; both are measured from day zero, the date the relinquished property closes.

Can I use exchange funds for personal expenses and still defer some gain?

Any funds you receive outside of what’s reinvested into qualifying replacement property are treated as boot and produce recognized gain up to the amount received, up to the total realized gain. The rest of the exchange can still qualify for deferral, but the portion you touch as cash is taxable.

Does depreciation recapture disappear if I do a like-kind exchange?

No. The lower carryover basis in the replacement property preserves the recapture exposure rather than eliminating it. Unrecaptured Section 1250 gain attributable to prior depreciation is taxed, at a rate up to 25%, whenever it’s ultimately recognized — on boot now or on a future sale.

Who can serve as my qualified intermediary?

Anyone independent of the taxpayer who hasn’t served as the taxpayer’s employee, attorney, accountant, or real estate agent within the two years before the exchange (subject to narrow exceptions). Most taxpayers use a dedicated exchange company rather than trying to structure it themselves, given the strict rules against actual or constructive receipt of funds.

References

• Internal Revenue Code Section 1031, as amended by the Tax Cuts and Jobs Act of 2017, Pub. L. 115-97.
• Treasury Regulation Section 1.1031(a)-3, Definition of Real Property.
• Internal Revenue Service, Form 8824 Instructions, Like-Kind Exchanges.
• Internal Revenue Service, Publication 544, Sales and Other Dispositions of Assets.