A 1031 exchange is a provision of the U.S. tax code that lets an investor defer capital gains tax on the sale of real property held for business or investment use by reinvesting the proceeds into another real property of “like kind,” within strict identification and closing deadlines.
In plain terms
Sell an investment property, buy another one, and the IRS treats the two transactions as a continuation rather than a cash-out — so long as the proceeds never land in the seller’s own hands and the replacement property is identified and closed within fixed windows. Nothing about the strategy forgives the gain; it rolls the original property’s low cost basis into the replacement, so the tax bill is deferred rather than erased, and resurfaces whenever the investor eventually sells without exchanging again.
How it works
Since 2018, under changes made by the Tax Cuts and Jobs Act, Section 1031 like-kind exchange treatment applies only to real property — personal property such as equipment, artwork, or vehicles no longer qualifies, only land and buildings held for business or investment. The property given up and the property received must both meet that test; a primary residence does not qualify.
In a typical deferred exchange, the seller never takes possession of the sale proceeds. A qualified intermediary holds the cash, the seller identifies a replacement property in writing within 45 days of closing the sale, and the exchange must close on the replacement within 180 days of that same closing date — or by the seller’s tax-return due date including extensions, if that falls earlier. Missing either deadline collapses the exchange into an ordinary taxable sale. The transaction is reported to the IRS on Form 8824, which reconciles the basis carried over, any cash (“boot”) received, and any gain that must be recognized despite the exchange.
The numbers
- Identification window: 45 days after the relinquished property closes.
- Exchange completion window: 180 days after that closing, or the extended tax-filing deadline if earlier.
- Eligible property: real property held for business or investment use only, a rule in effect since the 2018 tax year.
- Reporting form: IRS Form 8824, filed with the return for the year of the exchange.
What people get wrong
That a 1031 exchange eliminates the tax rather than postponing it. The deferred gain travels with the replacement property’s basis, and if that property is eventually sold outright, the original gain and any further appreciation are taxed together. The other common error is holding the sale proceeds personally, even briefly, between closings — any receipt of cash before the exchange is complete, no matter how short the gap, forfeits the deferral on that portion, which is exactly why a qualified intermediary holds the funds rather than the taxpayer. There is one way the deferred gain can disappear entirely: if the replacement property is held until death, it receives the same step-up in basis as any other inherited asset, wiping out the accumulated deferral along with the rest of the gain.
Related
Read more: Real Estate as an Investment: How the Wealthy Actually Use Property · Taxes: How Wealth Is Structured and Preserved
See also: Step-up in basis · Cost segregation · Depreciation recapture