What Is a 1031 Exchange and How Does It Work? (2026 Guide)

A 1031 exchange lets you sell an investment property and defer all capital gains taxes by reinvesting the proceeds into a "like-kind" replacement property. Named after Section 1031 of the Internal Revenue Code, this strategy has been used since 1921 to build real estate wealth tax-free. In 2026, the rules remain unchanged: swap one investment property for another, follow the timelines, and pay zero capital gains tax at the time of the exchange.

How a 1031 Exchange Works

The concept is straightforward. You sell a rental property for $500,000 that you bought for $300,000. Without a 1031 exchange, you owe federal capital gains tax on the $200,000 gain — roughly $30,000–$47,600 depending on your income bracket, plus depreciation recapture tax at 25% and any state capital gains tax.

With a 1031 exchange, you reinvest the full proceeds into a replacement property of equal or greater value. The tax bill drops to zero. Your cost basis carries over to the new property, and you can repeat the process indefinitely — deferring gains across multiple exchanges throughout your lifetime.

At death, your heirs receive a stepped-up basis, eliminating the deferred gains permanently. This is why experienced real estate investors call the 1031 exchange "swap 'til you drop."

The 1031 Exchange Timeline

Two deadlines govern every exchange, and missing either one kills the tax deferral:

45-Day Identification Period: Starting from the day you sell your relinquished property, you have exactly 45 calendar days to identify potential replacement properties in writing. You can identify up to three properties regardless of value (the "three-property rule"), or more than three if their combined value doesn't exceed 200% of the sold property's value (the "200% rule").

180-Day Exchange Period: You must close on the replacement property within 180 calendar days of selling the relinquished property. This deadline runs concurrently with the 45-day identification period — not after it. So you actually have 135 days after identification to close.

These deadlines are absolute. No extensions for weekends, holidays, market conditions, or financing delays. Plan backward from day 180 when structuring your exchange.

Types of 1031 Exchanges

Delayed (Forward) Exchange

The most common type. You sell first, then buy the replacement property within the 45/180-day windows. A Qualified Intermediary (QI) holds your sale proceeds in escrow during the exchange period. You never touch the money — if the proceeds hit your bank account, the exchange fails.

Reverse Exchange

You buy the replacement property before selling the relinquished property. This eliminates the risk of not finding a replacement in time, but adds complexity and cost. An Exchange Accommodation Titleholder (EAT) holds title to the new property until you sell the old one. Reverse exchanges cost $5,000–$15,000 in additional fees.

Improvement (Build-to-Suit) Exchange

You buy a replacement property and use exchange funds to improve it before the 180-day deadline. The improvements must be completed within the exchange period. This lets you customize the replacement property to your specifications while still qualifying for tax deferral.

Delaware Statutory Trust (DST) Exchange

DSTs allow you to exchange into fractional ownership of institutional-grade properties — apartment complexes, medical offices, industrial warehouses — managed by professional operators. DSTs solve the identification problem: multiple DST offerings are available at any time, making the 45-day deadline far less stressful. Learn more in our guide on what is a DST 1031 exchange.

Platforms like 1031 Crowdfunding specialize in connecting exchangers with DST investment opportunities.

1031 Exchange Rules and Requirements

Like-Kind Property: In real estate, virtually any investment property qualifies as "like-kind" to any other. An apartment building can exchange into a retail center, farmland, or a portfolio of single-family rentals. The property must be held for investment or business use — your primary residence does not qualify.

Equal or Greater Value: To defer 100% of the gain, the replacement property must be equal to or greater in value than the relinquished property. If you sell for $500,000 and buy for $450,000, you pay tax on the $50,000 difference (called "boot").

All Cash Must Be Reinvested: The full net proceeds (after closing costs and loan payoff) must go into the replacement property. Keeping any cash triggers taxation on the amount retained.

Debt Replacement: Your new mortgage must be equal to or greater than the mortgage on the sold property. If you sell a property with a $300,000 mortgage and buy a replacement with a $200,000 mortgage, the $100,000 difference is taxable boot.

Qualified Intermediary Required: You must use a QI to hold funds between the sale and purchase. The QI cannot be your attorney, accountant, real estate agent, or anyone who has acted as your agent in the prior two years. QI fees typically run $750–$1,500 for a standard exchange.

How to Execute a 1031 Exchange Step by Step

1. Engage a QI before listing your property. The QI must be in place before closing on the sale. Interview at least two and verify they carry fidelity bonds and errors-and-omissions insurance. Your QI holds hundreds of thousands of your dollars — their financial stability matters.

2. Sell the relinquished property. Proceeds flow directly from the closing agent to the QI. You never take constructive receipt of the funds.

3. Identify replacement properties within 45 days. Submit a written, signed identification to your QI. Be specific: include street addresses and legal descriptions. Start searching before you sell, not after.

4. Conduct due diligence on replacement properties. Inspect, appraise, and underwrite the replacement property just as you would any acquisition. The tax deferral doesn't help if you overpay for a bad property.

5. Close on the replacement within 180 days. The QI sends funds to the closing agent. Title transfers to you. The exchange is complete.

6. File IRS Form 8824 with your tax return for the year of the exchange.

Common 1031 Exchange Mistakes

Starting too late. The 45-day identification window is brutally short in competitive markets. Investors who wait until after selling to start searching often make desperate choices or miss the deadline entirely.

Using an unreliable QI. Several QIs have gone bankrupt or committed fraud, taking exchange funds with them. QIs are not regulated at the federal level. Choose one with institutional backing, significant assets under management, and segregated (not commingled) escrow accounts.

Ignoring depreciation recapture. A 1031 exchange defers depreciation recapture as well as capital gains. But the deferred depreciation carries forward indefinitely. If you eventually sell without exchanging, you'll owe recapture at 25% on all accumulated depreciation from every property in the chain.

Confusing tax deferral with tax elimination. A 1031 exchange defers taxes — it doesn't eliminate them (unless you hold until death and your heirs get a stepped-up basis). Each exchange carries forward a lower cost basis, meaning larger potential tax liability in the future.

For more on how real estate tax strategies work together, read our article on tax benefits of real estate investing.

1031 Exchange Costs

| Cost | Typical Range | |------|--------------| | Qualified Intermediary fee | $750–$1,500 | | Legal review | $1,000–$3,000 | | Reverse exchange (if applicable) | $5,000–$15,000 | | DST sponsor fees | Built into offering | | Standard closing costs | 2–5% of sale price |

The tax savings dwarf these costs. On a $200,000 gain, you defer $50,000–$75,000 in combined federal and state taxes. The exchange itself costs $2,000–$5,000.

Frequently Asked Questions

Can I do a 1031 exchange on my primary residence?

No. Section 1031 applies only to property held for investment or business use. Your primary residence does not qualify. However, if you convert your primary residence to a rental property and rent it for at least one to two years, it may then qualify. Consult a tax advisor for the specific holding period requirements in your situation.

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

No limit exists. You can exchange properties repeatedly throughout your lifetime. Many seasoned investors chain exchanges over decades, deferring millions in capital gains. Each exchange carries the accumulated deferred gain forward through a reduced cost basis on the replacement property.

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

The exchange fails entirely. You owe capital gains tax, depreciation recapture, and any applicable state taxes on the original sale — as if you never attempted an exchange. No extensions or exceptions exist, even for natural disasters or market disruptions. This deadline is the single biggest risk in any 1031 exchange.

Can I exchange into a property in a different state?

Yes. Like-kind requirements are very broad for real estate. You can exchange a rental house in California for an apartment building in Texas, farmland in Iowa, or a commercial property in Florida. Be aware that some states (notably California) track deferred gains and may tax them if you sell the replacement property.

How does a DST 1031 exchange work?

A Delaware Statutory Trust holds title to investment real estate. You exchange into a fractional interest in the DST, satisfying 1031 requirements. The DST's sponsor manages the property, distributes income, and eventually sells. DSTs offer passive, hands-off real estate ownership and solve the 45-day identification challenge since multiple DST offerings are typically available. 1031 Crowdfunding provides access to these offerings.

What is boot in a 1031 exchange?

Boot is any value received in an exchange that doesn't qualify as like-kind property. Common examples: cash kept from the sale proceeds, a reduction in mortgage debt, or personal property received in the transaction. Boot is taxable in the year of the exchange. To avoid boot, invest all proceeds and maintain or increase your debt level.

ModernAlts is an independent research platform. Nothing in this article constitutes investment, legal, or tax advice. Alternative investments involve risk including possible loss of principal.