For Missouri real estate investors, few tax tools are as valuable — or as easy to fumble — as the 1031 exchange. Under 26 U.S.C. § 1031, you can sell an investment property, reinvest the proceeds into a like-kind replacement property, and defer the federal capital gains tax that would otherwise come due at closing. The tax is postponed, not forgiven: it follows your basis into the new property and resurfaces when you eventually sell without exchanging again.

The modern rules exist because a taxpayer once fought the IRS and won. In Starker v. United States, 602 F.2d 1341 (9th Cir. 1979), the Ninth Circuit accepted a delayed exchange in which the replacement property was acquired years after the relinquished property was transferred. Congress responded by writing deferred exchanges directly into the statute, and Treasury followed with the regulations that now govern every exchange. Since the Tax Cuts and Jobs Act of 2017, Section 1031 applies only to real property — exchanges of equipment, artwork, or other personal or intangible property no longer qualify.

Used correctly, a 1031 exchange preserves equity and accelerates portfolio growth. Used carelessly, it creates a surprise tax bill plus penalties. This guide explains how the rules work, what changed for Missouri taxpayers in 2025, and the errors that most often destroy an exchange.

How a 1031 Exchange Works

A 1031 exchange lets you sell investment or business real estate (the relinquished property) and acquire replacement real estate of "like-kind" while deferring recognition of gain. Like-kind does not mean identical: a single-family rental can be exchanged for a commercial building, vacant land, or a multi-unit complex, because the standard is the nature or character of the property, not its grade or quality. One firm limit does apply — real property located in the United States is not like-kind to real property outside the country.

Both properties must be held for productive use in a trade or business or for investment. Your primary residence does not qualify, and neither does property held primarily for sale, such as a house you bought to flip. A vacation home used mainly for personal enjoyment is also out; the IRS looks at how the property was actually used, not how you describe it on a form.

Two more statutory limits matter. First, if you receive cash or other non-like-kind property in the deal — called "boot" — you recognize gain up to the amount of the boot, so pulling cash out of the exchange partially defeats it. A loss, by contrast, can never be recognized in an exchange. Second, exchanges between related persons carry a two-year holding requirement under 26 U.S.C. § 1031(f); if either side disposes of its property within two years, the deferred gain is generally triggered.

The 45-Day and 180-Day Deadlines

Every deferred exchange runs on two clocks, both defined in 26 C.F.R. § 1.1031(k)-1, and both start the day you close on the sale of the relinquished property.

The 45-day identification period requires you to identify potential replacement properties in a written, signed document delivered to the qualified intermediary or another permitted party. The identification must be unambiguous — a street address or legal description, not "a retail strip in St. Charles County." Treasury Regulation § 1.1031(k)-1(c)(4) gives you three identification options, and meeting any one of them is enough:

The three-property rule: identify up to three properties of any combined value.
The 200% rule: identify any number of properties whose total fair market value does not exceed 200% of what you sold.
The 95% rule: identify any number of properties, provided you actually acquire at least 95% of their combined value.

The 180-day exchange period requires you to receive the replacement property within 180 days of the sale, or by the due date of your federal return for that year (including extensions), whichever comes first. Investors who sell late in the calendar year sometimes need to extend their tax return just to preserve the full window.

These deadlines are jurisdictional in practice. The Tax Court applied them strictly in DeCleene v. Commissioner, 115 T.C. 457 (2000), denying exchange treatment where the taxpayer's paperwork never properly identified the property he ultimately acquired. The one narrow safety valve is disaster relief: under the framework of Rev. Proc. 2018-58, the IRS may postpone the 45-day and 180-day deadlines for taxpayers affected by a federally declared disaster. Absent such relief, there are no extensions, no hardship exceptions, and no grace periods.

The Qualified Intermediary and Constructive Receipt

You may not touch the sale proceeds at any point. If you receive the money — or even have the legal right to receive it — the doctrine of constructive receipt treats the gain as taxable, and the exchange fails. The standard solution is a qualified intermediary (QI), an independent third party who receives the proceeds at closing, holds them during the exchange period, and applies them to acquire the replacement property. The QI arrangement is itself a regulatory safe harbor under Treasury Regulation § 1.1031(k)-1(g)(4), but the regulation also disqualifies intermediaries who are your agent — your own attorney, accountant, broker, or employee generally cannot serve.

The QI holds your money, sometimes for months. That creates real counterparty risk, and it is not theoretical. In Teruya Brothers, Ltd. v. Commissioner, 580 F.3d 1038 (9th Cir. 2009), the intermediary collapsed into bankruptcy with the taxpayers' exchange funds tied up in its estate; the Ninth Circuit held that the resulting gain was taxable in the year of the sale, equitable hardship notwithstanding. Vet your intermediary before you sign anything:

Confirm the QI carries meaningful fidelity bonding and errors-and-omissions insurance, and ask for certificates.
Ask whether exchange funds are held in segregated, dual-signature accounts rather than a commingled operating account.
Ask who owns the QI and what else the company does with client funds; a small shop that invests the float is a different risk than a bonded national provider.
Get the exchange documents reviewed by your own counsel before the relinquished property closes, because the paperwork must be in place before you are entitled to the money.

Missouri-Specific Tax Considerations

Missouri starts its individual income tax calculation from federal adjusted gross income, so a federally valid exchange ordinarily defers Missouri tax on the same gain. The bigger story is new. For tax years beginning on or after January 1, 2025, RSMo § 143.121 allows individuals to subtract 100% of income reported as a capital gain for federal purposes when computing Missouri adjusted gross income. A parallel subtraction for corporations takes effect only after Missouri's top individual rate falls to 4.5% or lower.

That subtraction changes the planning question, not the federal law. An individual Missouri seller may now owe little or no state income tax on a straight sale, so the exchange decision turns almost entirely on the federal side — up to 20% capital gains tax, up to 25% on unrecaptured depreciation, and the 3.8% net investment income tax. On a property with substantial appreciation and years of depreciation, deferral still routinely preserves six figures of reinvestment capital. An exchange also remains the cleaner path for taxpayers who hold property through an entity, because the corporate subtraction is conditional.

Two practical Missouri points deserve attention. Missouri does not impose a real estate transfer tax — the Missouri Constitution (art. X, § 25) prohibits new taxes on the sale or transfer of real estate — so your transaction costs are limited to modest county recording fees and ordinary closing costs, which a 1031 exchange does not defer. And property taxes are independent of the exchange: Missouri reassesses real property in odd-numbered years, and your bill on the replacement property will reflect that property's own market value and assessment ratio, not the carried-over income tax basis. If you exchange into another state, check that state's rules with your tax advisor; a few states assert the right to collect tax later if you eventually sell in a taxable transaction, a topic we cover in our multi-state tax overview.

Exchange Structures: Delayed, Reverse, and Improvement

The delayed exchange described above — sell first, then buy inside the two windows — accounts for the overwhelming majority of transactions and carries the lowest cost and complexity.

A reverse exchange inverts the order: you acquire the replacement property before the relinquished property sells. Because you cannot own both and still meet the statute's sequencing, Rev. Proc. 2000-37 provides a safe harbor in which an exchange accommodation titleholder parks title to one of the properties for up to 180 days. Reverse exchanges cost more in fees and financing, but they solve a real problem in a fast market where the right replacement property will not wait for your sale to close.

An improvement (build-to-suit) exchange uses exchange proceeds to fund construction or renovation on the replacement property during the exchange period. To count toward the exchange value, the improvements must be in place before you take title and before the 180-day period expires, which demands tight coordination among the QI, contractor, and lender. Both advanced structures should be planned alongside your purchase contracts and broader investment strategy, not bolted on after a deal is signed.

Mistakes That Disqualify an Exchange

Most failed exchanges trace to a short list of preventable errors:

Touching the money. Even briefly holding the proceeds — depositing the buyer's check before wiring it to the QI — is constructive receipt and ends the exchange.
Missing the 45-day identification. This is the single most common failure. Start scouting replacement properties before your sale closes, not after.
Trading down. To defer all of the gain, you must reinvest all net proceeds into replacement property of equal or greater value and replace the debt you paid off; any shortfall is taxable boot.
Changing the taxpayer. The same taxpayer who sold must buy. Selling through a single-member LLC and buying in your own name can work, but swapping between distinct entities or adding a spouse mid-exchange invites disqualification.
Exchanging with a related party without a plan. The two-year holding rule of § 1031(f) applies to both sides of a related-party swap.
Partnership reshuffling at the closing table. A partnership itself can exchange, but distributing property to partners so each can exchange separately — the "drop and swap" — draws IRS scrutiny when the distribution and sale are close together. Raise it with counsel months in advance.
Sloppy reporting. Every exchange must be reported on IRS Form 8824 with your return for the year of the sale, and the form's questions about dates, values, and related parties mirror the exact places exchanges break.

How Ott Law Firm Can Help

At Ott Law Firm, we work with Missouri real estate investors to structure 1031 exchanges that comply with every IRS requirement and fit the investor's larger plan. We review exchange agreements before the first closing, coordinate with your qualified intermediary, broker, and tax advisor, and make sure the entity that sells is the entity that buys. For long-term holders, we also integrate exchanges with estate planning, because property held until death generally receives a stepped-up basis that can erase the deferred gain entirely for your heirs.

Whether you are executing your first exchange or managing a portfolio of Missouri and out-of-state properties, early legal review is far cheaper than a failed exchange. Schedule a consultation with Ott Law Firm at (314) 710-2740 before you list the relinquished property.

Frequently Asked Questions

Can I do a 1031 exchange on my primary residence?

No. Section 1031 reaches only property held for productive use in a trade or business or for investment, and a primary residence fails that test. If you convert a former residence into a genuine rental and hold it as an investment for a reasonable period first, exchange treatment may become available; discuss timing with your tax advisor before acting.

Is there a limit on how many 1031 exchanges I can do?

No. The statute contains no numerical cap, and serial exchanging across decades is a common wealth-building pattern. Each exchange carries the deferred gain forward into the next property, and property still held at death generally receives a stepped-up basis under 26 U.S.C. § 1014, which is why exchanges are often coordinated with an estate plan.

What happens if I cannot find a replacement property within 45 days?

If no property is properly identified by day 45, the exchange fails and the gain is taxable in the year of the sale. The intermediary will typically return the funds after the identification period lapses. This is why experienced investors line up candidate properties — including backup identifications under the three-property rule — before their relinquished property closes.

Do I still need a 1031 exchange now that Missouri exempts capital gains for individuals?

Often yes, because the Missouri subtraction enacted for 2025 addresses only Missouri income tax. The federal tax — capital gains, depreciation recapture, and the 3.8% net investment income tax — is untouched, and it is almost always the larger number. Entity owners have an additional reason: the corporate version of the Missouri subtraction is contingent on future rate reductions.

This article is for informational purposes only and does not constitute legal advice. Every case is different, and tax outcomes depend on facts no article can capture. Contact Ott Law Firm at (314) 710-2740 for advice specific to your situation.

1031 Exchanges in Missouri