What Is a 1031 Exchange? Rules, Timeline, and Limits

A 1031 exchange lets a real estate investor sell an investment property and roll the proceeds into another investment property without paying capital gains tax in the year of the sale. The tax is not forgiven, it is deferred, and it stays deferred for as long as you keep exchanging into qualifying replacement property. The name comes from Section 1031 of the Internal Revenue Code. Investors also call it a like-kind exchange or a Starker exchange. The idea is simple. The execution is unforgiving: miss a deadline by one day, take the sale proceeds into your own bank account for one hour, or buy something that does not qualify, and the exchange collapses into an ordinary taxable sale. One note before the details. This article is general information, not tax advice. A real 1031 exchange requires a qualified intermediary and a CPA who knows your specific situation. Treat what follows as a map, not a substitute for professional guidance.

How does a 1031 exchange actually work?

A standard delayed exchange runs in a fixed sequence, and the order matters more than most investors expect. 1. Engage a qualified intermediary before you close the sale. The intermediary, often called a QI, is an independent third party who holds the proceeds. Sign the closing documents without one in place and the exchange is generally dead, with no way to fix it afterward. 2. Sell the relinquished property. The proceeds wire directly from the closing table to the QI, never to you. Touching the money, even briefly, is called constructive receipt and it disqualifies the exchange. 3. Identify replacement property within 45 days. In writing, signed, delivered to the QI, describing the property unambiguously. 4. Close on the replacement within 180 days. Same clock start, running at the same time as the 45 days, not after it. 5. The QI wires the funds to the replacement closing. You never handle them. 6. Report the exchange on IRS Form 8824 with that year's return. Every step in that list has caused a failed exchange for someone.

What property qualifies as like-kind?

For real estate, like-kind is much broader than most people assume. Almost any real property held for investment or for productive use in a trade or business can be exchanged for almost any other real property held the same way. The properties do not need to be similar in type, size, or quality. The 2017 tax law narrowed Section 1031 to real property only, so equipment and personal property exchanges no longer qualify.

What are the 1031 exchange deadlines?

Two clocks start on the day the relinquished property closes, and they run at the same time.

The 180-day window includes the first 45 days. It is not 45 plus 180. There is also a hard ceiling most investors miss: the exchange must be completed by the earlier of 180 days or the due date of your tax return for that year, including extensions. If you close in November, you likely need to file an extension to get the full 180 days. Neither deadline moves for weekends or federal holidays. If day 45 lands on Christmas, day 45 is still Christmas. The main exception is federally declared disaster relief, issued by specific IRS notice. For the full mechanics, see our breakdown of the 45-day and 180-day rules.

What are the limits on a 1031 exchange?

To defer 100 percent of the gain, three things generally need to be true of your replacement purchase:

• •Equal or greater value. The replacement property should cost at least as much as the net sale price of the property you sold. - All equity reinvested. Every dollar of net proceeds held by the QI goes into the new property. - Debt replaced or exceeded. If you paid off a $180,000 mortgage on the sale, you generally need at least $180,000 of new debt, or you need to add that much cash. Anything you keep back, whether it is cash or a reduction in your debt load, is called boot, and boot is taxable up to the amount of gain you realized. That is the single most common way investors end up with a surprise tax bill on a deal they thought was fully sheltered. We cover the offsets and traps in what boot is and how to avoid it.

A worked example (illustrative only)

These numbers are made up to show the arithmetic. They are not a projection of any real property or a promise of any tax outcome. An investor bought a rental in 2016 for $220,000 and has taken $64,000 of depreciation. They sell it today for $520,000 with 7 percent in selling costs.

If they simply sold, the federal bill would break into two pieces. Depreciation recapture on the $64,000 is taxed at up to 25 percent, which is $16,000. The remaining $263,600 of gain at a 15 percent long-term capital gains rate is $39,540. That is roughly $55,540 of federal tax, before any state income tax and before the 3.8 percent net investment income tax that applies to some filers. In a properly structured exchange, that $55,540 stays in the deal instead of leaving it. At 25 percent down, roughly $55,000 of preserved equity supports about $220,000 of additional purchase price. That is the entire argument for the strategy: it is not tax savings, it is compounding on money the IRS would otherwise hold. You can run your own version of this in the free 1031 exchange calculator, and compare it against the straight-sale outcome in the capital gains tax calculator. Neither requires a signup.

What happens to your basis after the exchange?

Your basis carries over. The replacement property's basis is generally its purchase price minus the gain you deferred, so a $700,000 replacement in the example above would carry a basis near $372,000 rather than $700,000. That means a smaller annual depreciation deduction every year going forward, which is the quiet cost of the deferral. For most investors the trade is clearly worth it. For an investor with a small gain, it may not be.

When does a 1031 exchange not make sense?

• •The gain is small. If the deferred tax is $12,000 and the intermediary fee plus the extra closing friction is a few thousand dollars, the math gets thin fast. - You need the cash. Exchange proceeds you keep are boot and are taxable. If you want liquidity, a 1031 is fighting you. Forty-five days is short, and buyers under exchange pressure are known to overpay. - The replacement deal is worse than the tax. Overpaying by $60,000 to defer $50,000 of tax is not a win. Underwrite the replacement on its own merits first. That last point is the one to take seriously. Before you commit to a replacement property under a ticking clock, run it as a normal deal: check the rent, the expenses, and the return. The rental property calculator and the deal analyzer will tell you whether the replacement stands up without the tax story attached to it. If the deal only works because of the deferral, it is not a deal. Again, this is general information only. Every exchange needs a qualified intermediary engaged before closing and a CPA reviewing the structure, and the penalty for getting the rules wrong is the full tax bill you were trying to defer.