What Is a 1031 Exchange? How Real Estate Investors Defer Capital Gains Taxes

Selling an investment property often means a large capital gains tax bill. But there is a legal strategy that allows real estate investors to defer those taxes indefinitely — sometimes for a lifetime — while continuing to grow their portfolio. It is called a 1031 exchange, and it is one of the most powerful tax deferral tools available to real estate investors.

What Is a 1031 Exchange?

A 1031 exchange (named for Section 1031 of the Internal Revenue Code) allows you to sell one investment property and reinvest the proceeds into another “like-kind” property without immediately paying capital gains taxes on the sale. The tax is not eliminated — it is deferred until you eventually sell a property without doing another 1031 exchange.

If you continue doing 1031 exchanges throughout your lifetime and your heirs inherit the properties, they receive a stepped-up basis at your death, which can effectively eliminate the deferred capital gains taxes entirely.

What Properties Qualify?

Both the property being sold (the “relinquished property”) and the property being purchased (the “replacement property”) must meet certain criteria:

Held for investment or used in a trade or business. Your primary residence does not qualify. Vacation homes usually do not qualify unless they are genuinely investment properties.
Like-kind. “Like-kind” is broadly defined for real estate. You can exchange an apartment building for a strip mall, raw land for a rental house, or commercial office space for industrial property.
Located in the United States. Foreign properties do not qualify for a 1031 exchange with U.S. properties.

The Timeline: 45 Days and 180 Days

45-day identification rule. You have 45 days from the close of the sale of your relinquished property to identify potential replacement properties in writing to your Qualified Intermediary. You can identify up to three properties regardless of value, or more if their total value does not exceed 200% of the relinquished property’s value.

180-day closing rule. You must close on the purchase of your replacement property within 180 days of the sale — or by the due date of your federal tax return for the year of the sale, whichever comes first.

The Qualified Intermediary: Required

A 1031 exchange requires a Qualified Intermediary (QI), also called an exchange facilitator. The QI holds the proceeds from your property sale in escrow — you cannot touch the money, or the exchange is disqualified. You must engage the QI before you close on the sale of your relinquished property. QI fees typically range from $500 to $1,500 for a straightforward exchange.

Boot: When You Owe Some Tax Anyway

“Boot” is any value received in an exchange that is not like-kind real property — cash, debt relief, or other property. Boot is taxable in the year of the exchange.

To fully defer capital gains taxes, you must:

Reinvest all the proceeds from the sale into the replacement property
Acquire replacement property of equal or greater value
Replace any mortgage on the relinquished property with equal or greater debt on the replacement property

Types of 1031 Exchanges

Delayed (forward) exchange. The most common type. You sell first, then buy the replacement property within the 45/180-day window.

Reverse exchange. You acquire the replacement property first, then sell the relinquished property within 180 days. More complex and expensive, but useful when you need to secure the replacement property before your current one sells.

Improvement (construction) exchange. You use exchange funds to make improvements on the replacement property before taking title.

Delaware Statutory Trust (DST). You exchange into fractional ownership of a large commercial property. Useful for investors who want to exit active property management while maintaining 1031 eligibility.

Does 1031 Apply to Personal Property?

Before the 2017 Tax Cuts and Jobs Act, 1031 exchanges applied to some types of personal property — aircraft, artwork, equipment. The TCJA eliminated the like-kind exchange treatment for all personal property. Since January 1, 2018, Section 1031 applies only to real property.

The Long-Term Power of Repeated Exchanges

Each time you do a 1031 exchange, you defer the tax from the previous property and carry the deferred gain into the new property, reducing its basis. At death, if your heirs inherit the property, they receive a stepped-up basis equal to the property’s fair market value at the date of death, erasing all that deferred gain permanently.

Bottom Line

A 1031 exchange is one of the most powerful tax strategies available to real estate investors. By deferring capital gains taxes on each sale, you keep more money working in investments — compounding your returns over time. But the rules are strict: you must use a Qualified Intermediary, meet the 45-day and 180-day deadlines, and reinvest all proceeds to fully defer taxes. Work with a tax professional experienced in real estate exchanges before initiating any 1031 transaction.

For more on this topic, see our guide on how Qualified Opportunity Zones compare to 1031 exchanges for deferring capital gains.