Definition
A 1031 exchange lets an owner of investment property defer paying capital gains tax on a sale by reinvesting the proceeds into another qualifying property rather than pocketing the cash. Strict deadlines apply: you have 45 days after closing to identify potential replacement properties and 180 days total to close on one of them, with a qualified intermediary required to hold the sale proceeds the entire time. This strategy only applies to investment or business-use property, not the house you actually live in as your primary residence. For a seller who owns a rental or other investment property, a 1031 exchange can preserve a significant amount of money that would otherwise go to taxes, but it requires advance planning and cannot be set up after the fact. Missing either deadline can disqualify the exchange and trigger the full tax bill. Because the rules are technical, most sellers work with a qualified intermediary and a tax professional before listing the property.
Example
Frank sells a rental property for $340,000 with a significant built-in gain from years of appreciation, and his accountant estimates he'd owe tens of thousands of dollars in capital gains tax if he simply took the cash. Instead, Frank works with a qualified intermediary to set up a 1031 exchange before his closing even happens, since the exchange has to be arranged in advance. Within 45 days of closing, Frank identifies three potential replacement properties, ultimately choosing a larger duplex in a neighboring town. He closes on the duplex within the required 180-day window, with the intermediary transferring the held proceeds directly toward the new purchase. By following each deadline carefully, Frank defers the tax bill he would have otherwise owed on the sale, allowing his full equity to keep working for him in the new property instead of going to taxes.