The Complete Guide to a 1031 Exchange

What a 1031 exchange actually does

A 1031 exchange (named for Section 1031 of the Internal Revenue Code) lets you sell investment or business real estate and defer the capital gains tax and depreciation recapture you'd normally owe — as long as you reinvest the proceeds into another "like-kind" property.

The key word is defer, not avoid. You aren't erasing the tax; you're postponing it. Your old (adjusted) cost basis carries forward into the new property, so the gain you built up rides along with you. Many investors keep exchanging for years — "swap till you drop" — and ultimately pass the property to heirs, who may receive a stepped-up basis that can wipe out the deferred gain entirely.

This is educational information, not tax or legal advice — confirm the details with your CPA and attorney before acting.

Why investors use a 1031 exchange

The power of a 1031 comes from keeping your full equity working instead of handing a slice to the IRS. Consider an illustrative example:

• ›You bought a rental years ago for $300,000 and have depreciated it down to an adjusted basis of roughly $200,000.
• ›You sell today for $800,000, leaving a realized gain of about $600,000.
• ›A fully taxable sale might cost you $150,000+ in combined federal capital gains, depreciation recapture, net investment income tax (NIIT), and state tax.

If you exchange instead, that $150,000 stays invested in your next property — compounding for you rather than gone forever. Over multiple exchanges, the deferred dollars can dramatically outpace what you'd have left after repeated taxable sales.

What property qualifies

The rules are broad for real estate but specific in a few ways:

• ›Both the property you sell (the relinquished property) and the one you buy (the replacement property) must be held for investment or productive use in a trade or business — not a personal residence or property held primarily for resale (a "flip").
• ›Since the 2017 Tax Cuts and Jobs Act, only real property qualifies. Equipment, vehicles, artwork, and other personal property no longer do.
• ›"Like-kind" is interpreted generously for real estate. You can swap an apartment building for raw land, a retail strip center for a single-family rental, a warehouse for farmland, or a fee-simple property for certain long-term leasehold interests.

The general rule of thumb to fully defer: buy a replacement of equal or greater value, reinvest all your net proceeds, and carry equal or greater debt.

The five basic steps

1. Engage a Qualified Intermediary (QI) before closing your sale. This must happen first — you cannot fix it later. 2. Sell the relinquished property. The QI receives the proceeds; you never touch them. 3. Identify replacement property within 45 days in a signed written notice. 4. Close on the replacement within 180 days, with the QI wiring the parked funds to complete the purchase. 5. Report the exchange on IRS Form 8824 with your tax return for the year of the sale.

The key deadlines

Two clocks start the day your sale closes, and there are no extensions (outside of rare IRS disaster relief):

• ›45 calendar days to identify your replacement property in writing.
• ›180 calendar days to close on the purchase.

Miss either deadline and the exchange fails — the sale becomes fully taxable. These windows run concurrently, not back-to-back, so the 45-day clock eats into your 180 days. Using all 45 identification days leaves only 135 days to close.

The Qualified Intermediary

You cannot touch the sale proceeds. If the money hits your bank account — even for a single day — the IRS treats it as constructive receipt and the exchange is dead.

Instead, a neutral third party called a Qualified Intermediary (QI), also known as an accommodator or exchange facilitator, holds the funds, prepares the exchange documents, and transfers the cash into your replacement purchase. The QI cannot be someone who has acted as your agent in the prior two years — so not your CPA, attorney, broker, employee, or relative. Choosing a reputable, bonded QI is one of the most important decisions in the process.

Identification rules in brief

When you identify replacement candidates within 45 days, you must follow one of three rules:

• ›Three-property rule: identify up to three properties of any value (most common).
• ›200% rule: identify any number, as long as their combined fair market value doesn't exceed 200% of what you sold.
• ›95% rule: identify any number at any value, but you must actually acquire at least 95% of the total value identified.

Common ways exchanges fail

• ›Taking cash out (called "boot") — that portion is taxable in the year of sale.
• ›Buying down — purchasing a property worth less than what you sold, which creates boot.
• ›Reducing debt without offsetting it with new cash (mortgage boot).
• ›Missing the 45- or 180-day deadline, even by a day.
• ›Touching the proceeds directly instead of using a QI.
• ›Title mismatch — the taxpayer who sold must be the taxpayer who buys. An individual can't sell and have an LLC buy unless it's a disregarded entity.

What this means for you

A 1031 exchange is a powerful tool, but it rewards planning. The single biggest mistake is treating the replacement side as an afterthought. Line up your QI and your replacement candidates before you close the sale, not after — including a backup option such as a Delaware Statutory Trust (DST) interest, which can be acquired quickly if your first choice falls through. Run the numbers with your CPA so you know exactly what's deferred and what (if anything) is taxable before you sign.