1031 exchange

A federal tax rule letting investors defer capital gains tax by rolling proceeds from one investment property into another. Strict timelines apply: 45 days to identify the new property, 180 days to close.

Also called like-kind exchange, starker exchange · Taxes & insurance · Updated September 2026

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Part 1 of 4

Why a seller cares

Selling an investment property and buying another through a 1031 exchange defers the capital gains tax. The clocks are strict, the intermediary has to be in place first, and it never applies to the home you live in.

Part 2 of 4

A simple example

You sell a rental for $400,000 with a $200,000 gain and buy a $450,000 replacement through an intermediary within the deadlines. The tax is deferred.

1031 exchange: a simple example
The deadlineWhat has to happen
Before the sale closesA qualified intermediary is engaged
Day 45Replacements identified in writing
Day 180The replacement closes

A 1031 is a deferral with three deadlines. Miss one and the gain is taxed this year.

Part 3 of 4

What people get wrong

That it is tax-free. It is tax-deferred; the gain follows you into the next property and is taxed when you sell without exchanging.

Part 4 of 4 · where to read next

Where it appears in the sale

What a definition is, and what it isn't

Keighbor is a software company, not a law firm, brokerage, or tax adviser. This is general information, not legal, tax, financial, or real estate advice about your sale. Your situation may differ. Before acting on a contract, disclosure, title, tax, or pricing question, ask an appropriately licensed professional in your state.

Written and researched by Keighbor Research · drawn from the reference glossary · how we research and check what we publish

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