The 1031 Exchange, and Its Two Clocks
Selling a rental property that has been held for decades produces two tax bills at once: the capital gain on the appreciation, and recapture of the depreciation claimed along the way. A like-kind exchange defers both into a replacement property. It is genuinely powerful, and it runs on two deadlines that do not move.
- Real property only:: Since the rules changed, the provision applies to real property held for business or investment, not to other assets.
- Two deadlines:: Identify replacement property within 45 days; complete the exchange within 180 days. Neither is extendable.
- You cannot touch the money:: A qualified intermediary must hold the proceeds. Receiving them ends the exchange.
- Deferral, not exemption:: The gain carries into the replacement property's basis and is taxed when that is eventually sold.
Where the AI summary above gets this wrong
"A 1031 exchange lets you sell a property without paying tax."
That's surface-true. Here's what it misses:
- The tax is deferred into the next property, not removed — The replacement property takes a basis reduced by the deferred gain, so the liability travels with it. Sell that property without another exchange and the whole accumulated gain becomes taxable at once — which is why exchanges tend to continue rather than conclude.
- Depreciation recapture travels too, and is taxed differently — Years of depreciation deductions reduced basis and therefore increased the gain. That recaptured portion is taxed at a higher rate than long-term capital gain, and it is frequently the larger part of the bill on a property held for decades. Both are deferred by the exchange.
- The deadlines are absolute and the money must not be touched — Forty-five days to identify and 180 days to close, running from the sale, with no extension for a failed deal or a slow lender. And the proceeds must go to a qualified intermediary — receiving the money, even briefly, ends the exchange and makes the sale taxable.
01 What qualifies and what the clocks are
The provision now applies only to real property held for use in a trade or business or for investment. Property held primarily for resale, and a personal residence, do not qualify. Like-kind is interpreted broadly within real property: an apartment building can be exchanged for raw land or a commercial unit.
Two deadlines run from the day the relinquished property is transferred. Replacement property must be identified in writing within 45 days, subject to rules limiting how many properties can be named. The exchange must be completed within 180 days.
Neither deadline can be extended for an ordinary difficulty. A deal falling through on day 44 does not buy more time, which is why experienced parties identify more than one property and line up financing before selling.
02 What is actually deferred
Two amounts. The capital gain on appreciation, and the recapture of depreciation claimed over the holding period. For a property owned for thirty years, depreciation may have reduced basis substantially, and the recaptured portion is taxed at a higher rate than the long-term gain.
The replacement property takes a carryover basis reduced by the deferred gain, so the tax has moved rather than gone. Depreciation on the new property is computed on that lower basis, which reduces the annual deduction going forward — an ongoing cost of the deferral that rarely features in the decision.
Where the replacement property is worth less, or debt is reduced, the difference is boot and is taxable immediately. Getting the values and the debt to match is a large part of what makes an exchange work, and it interacts with the rest of the year's realised gains if any boot arises.
Shows: the tax on the whole gain, including depreciation recapture, that a qualifying exchange defers into the replacement property. Ignores: that recapture and long-term gain are taxed at different rates, the net investment income tax, state tax, and the exchange's own costs.
Source: Publication 527
03 Where it ends
An exchange defers. It does not forgive. Each subsequent exchange carries the accumulated gain forward, and a final sale without an exchange brings the whole of it into charge in one year.
The traditional endpoint is death. Property held until then receives a step-up in basis, and the deferred gain is never taxed at all — which is why the phrase 'swap till you drop' exists and why exchanges suit an owner intending to hold real estate for life.
For someone who wants to stop being a landlord, the calculation is different. The alternatives are paying the tax, spreading the sale over years through an installment arrangement, or offsetting the gain with losses. Continuing to exchange purely to avoid tax means continuing to own property, which for a retiree may be exactly the thing they were trying to stop doing.
The exchange is a good tool and it comes with a condition people accept too readily: you have to keep owning property. For someone at 68 who has spent thirty years dealing with tenants and roofs, deferring the tax by buying another building is a decision to remain a landlord for another decade. Sometimes that is right. Frequently the honest answer is to pay the tax, spread the sale if it helps, and be finished.
FAQ
Does a 1031 exchange eliminate the tax?
No. It defers it. The gain carries into the replacement property's basis and becomes taxable when that property is sold without a further exchange.
What are the 1031 deadlines?
Replacement property must be identified in writing within 45 days of the sale, and the exchange completed within 180 days. Neither deadline can be extended for ordinary difficulties.
Can I exchange a rental into a home I will live in?
Not directly. The provision requires property held for business or investment, and converting a replacement property to personal use has its own rules and holding requirements. It is a question for a professional before the exchange, not after.
Sources
Regulator references
- Like-kind exchanges: real estate tax tips · Internal Revenue Service · 2026What qualifies, the identification and completion deadlines, and the role of the intermediary.Last verified: 2026-09-07
- Publication 527 · Internal Revenue Service · 2026Depreciation on rental property, which an exchange defers along with the gain.Last verified: 2026-09-07
- Topic 409: capital gains and losses · Internal Revenue Service · 2026The tax an exchange defers rather than eliminates.Last verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-09-07 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.