1031 Like-Kind Exchanges: Deferring Gain on Investment Property

Quick answer: A 1031 like-kind exchange lets you sell real property held for investment or business use and defer the tax on the gain by reinvesting in other like-kind real property. You must use a qualified intermediary to hold the sale proceeds, identify replacement property within 45 days, and close on it within 180 days. Any cash or debt relief you do not reinvest, called boot, is generally taxable.

For landlords and investors who plan to keep owning real estate, a 1031 exchange can be one of the most valuable tools available. Instead of paying tax on years of appreciation and depreciation when you sell, you carry your basis into the next property and keep the full proceeds working. We have seen exchanges done well, and we have seen them fall apart over a missed deadline. The rules are strict, but they are manageable with planning.

What a 1031 exchange does

Section 1031 of the Internal Revenue Code says no gain or loss is recognized when real property held for productive use in a trade or business or for investment is exchanged for like-kind real property held for the same purposes.

The key word is defer. The gain is not forgiven. Your old property's basis carries over to the new one, adjusted for any additional cash you invest or boot you receive. When you eventually sell the replacement property in a taxable sale, the deferred gain, including the portion tied to past depreciation, comes due. Many investors exchange several times over a lifetime and never sell in a taxable transaction.

Since 2018, like-kind exchange treatment is limited to real property. Equipment, vehicles, and other personal property no longer qualify.

What property qualifies

Both the property you give up and the property you acquire must be held for investment or for use in a business. "Like-kind" is broad for real estate. Generally, any U.S. real property held for investment is like-kind to any other U.S. real property held for investment. A two-family in Syracuse can be exchanged for a small commercial building in Utica, vacant land, or an apartment complex in another state.

Property that does not qualify includes:

Your primary residence
Property held primarily for sale, such as fix-and-flip houses or lots held by a developer
Foreign real property exchanged for U.S. real property

Vacation homes and properties with mixed personal and rental use are a gray area, and the IRS has provided a safe harbor with specific rental and personal-use requirements. Those situations deserve careful review.

The deadlines you cannot miss

Most exchanges today are delayed exchanges: you sell the old property first, then buy the replacement. Two deadlines run from the day the old property closes, and they run at the same time:

45-day identification period. You must identify potential replacement properties in writing, signed and delivered to the proper party, within 45 calendar days.
180-day exchange period. You must close on the replacement property within 180 calendar days of the sale, or by the due date, including extensions, of your tax return for the year of the sale, whichever comes first.

There are no extensions for weekends or holidays, and generally no extensions at all except in federally declared disasters. If a sale closes late in the year, the 180-day period may run past your tax return's due date, so you may need to extend your return to get the full period.

Identification is subject to limits as well. Most investors use the three-property rule, which lets you identify up to three properties of any value. Other rules allow more properties under value-based limits.

The qualified intermediary

You cannot touch the sale proceeds. If the money is paid to you, or is available to you, even briefly, the exchange generally fails. That is why delayed exchanges use a qualified intermediary, an independent party who holds the funds and handles the exchange documents.

The intermediary must be engaged before the sale of the old property closes. Your attorney, real estate agent, or accountant who has acted for you recently generally cannot serve as your intermediary. Choose an established firm, and ask how the funds are held and protected.

Understanding boot

To defer all of the gain, you generally need to buy replacement property of equal or greater value, reinvest all the net cash proceeds, and take on equal or greater debt, or replace any debt paid off with additional cash.

Anything you receive that is not like-kind property is boot. Common examples:

Cash left over after buying the replacement
A reduction in mortgage debt that is not offset by new cash invested
Sale proceeds used to pay non-transaction costs, such as security deposit transfers or prorated rents, depending on how they are handled at closing

Boot is taxable up to the amount of your gain. Exchanges with some boot can still be worthwhile, but you should know the number before you close. The exchange is reported on Form 8824.

New York and other practical points

New York generally follows the federal treatment of like-kind exchanges, so gain deferred federally is usually deferred for New York as well. Nonresidents selling New York real property face withholding-style estimated tax requirements at closing, with an exemption process that may apply for exchanges. The New York State Department of Taxation and Finance has the current forms.

Before you list a property, talk with your accountant about whether an exchange makes sense compared to simply selling. Our article on depreciation and selling a rental shows what a taxable sale would cost, which is the number an exchange is meant to defer.

Frequently asked questions

Can I do a 1031 exchange on my primary residence?

No. Your home is not held for investment or business use. A home sale may instead qualify for the separate exclusion for the sale of a principal residence, which has its own ownership and use rules.

What happens if I miss the 45-day or 180-day deadline?

The exchange generally fails and the sale is treated as taxable. There are no extensions for weekends or holidays, and relief is generally limited to federally declared disaster situations.

Do I have to buy a more expensive property to defer all the tax?

Generally yes. To defer the full gain, the replacement property should be of equal or greater value, you should reinvest all the net proceeds, and any debt paid off should be replaced with new debt or cash. Falling short creates taxable boot.

Can I exchange a rental property for land or a commercial building?

Usually, yes. U.S. real property held for investment or business use is generally like-kind to other U.S. real property held for the same purposes, regardless of whether it is improved or unimproved.

This article is general information for 2026, not tax or legal advice for your situation. Tax rules and figures change; confirm current amounts with the IRS, New York State, or your accountant before acting.