The Complete Guide to 1031 Exchanges

A 1031 exchange lets you sell an investment property and reinvest the proceeds into another one without paying capital gains tax at the time of the sale. Named after Section 1031 of the tax code, it’s one of the most powerful tools in real-estate investing — and, once you strip away the jargon, it’s simpler than it looks. This guide walks through the whole thing in plain language.

What a 1031 exchange actually is

Normally, when you sell an appreciated investment property you owe tax on the profit. A 1031 exchange lets you defer that tax by rolling the entire proceeds into a new "like-kind" property. You’re not selling and buying so much as swapping — and because you never pocket the cash, the IRS lets you postpone the bill.

The tax isn’t erased; it’s deferred. Your original cost basis carries forward into the new property, so the gain rides along until you eventually sell without exchanging. Many investors defer again and again through successive exchanges — and under current law, the built-up gain can be wiped out by the step-up in basis when the property passes to heirs.

The two deadlines that define every exchange

The moment your old property (the "relinquished property") closes, two clocks start ticking — on the same day:

• The 45-day identification deadline: you have 45 calendar days to name, in writing, the replacement property you intend to buy.
• The 180-day exchange deadline: you have 180 calendar days to actually close on that replacement property.

A common myth is that you get 45 days plus another 180. You don’t — the 45 sits inside the 180, and both start at closing. It’s 180 days total.

These deadlines are strict: weekends and holidays count, and the only recognized extensions are for federally declared disasters. You can see exactly where your dates fall using our free 45/180-day deadline calculator.

Why you need a Qualified Intermediary

Here’s the catch that surprises most first-timers: you’re not allowed to touch your own sale money during the exchange. If the proceeds land in your bank account — even briefly — the IRS calls it constructive receipt and the exchange fails. So a neutral third party called a Qualified Intermediary (QI) holds the money for you, then uses it to buy your replacement property.

The QI must be genuinely independent — not you, your relatives, or your recent agents — and must be in place before your sale closes. You cannot add one after the fact. This is the single most common way people accidentally disqualify an otherwise-valid exchange, so line it up early. Start an exchange before your closing date.

What qualifies as like-kind

For real estate, "like-kind" is broad. Almost any real property held for investment or business use can be exchanged for almost any other: raw land for an apartment building, a rental condo for a triple-net retail property, one asset for several. What matters is how you hold the property, not its type. Your personal home doesn’t qualify, and neither does property you hold mainly to resell.

What taxes you defer

A 1031 defers more than just capital gains. It also defers depreciation recapture — tax on the depreciation you deducted over the years, which can be taxed at up to 25% federally — plus the 3.8% net investment income tax where it applies, and usually your state capital gains tax too. On a long-held, heavily depreciated rental, recapture alone can be the biggest piece of the bill.

To defer the full amount, reinvest all your net proceeds and buy property of equal or greater value with equal or greater debt. Anything you keep — cash or debt relief — is boot, and it’s taxable. Estimate your potential deferral with our capital gains calculator.

The steps, start to finish

• Engage a Qualified Intermediary before your sale closes.
• Close on your relinquished property — the QI receives the proceeds into escrow.
• Identify your replacement property in writing by day 45.
• Close on the replacement property by day 180, with the QI sending the funds.
• Report the exchange on IRS Form 8824 with that year’s tax return.

That’s the whole arc. If you want to go deeper on the deadlines, read the 45 & 180-day rules explained; for the numbers, see what a 1031 exchange costs. Still have a specific question? Browse the answers hub.