The Ultimate 1031 Exchange Guide

What is a 1031 exchange

A 1031 exchange is a tax-deferral strategy named after Section 1031 of the Internal Revenue Code. It lets real estate investors sell one property and buy another “like-kind” property without paying capital gains tax at the time of sale. The tax doesn't disappear — it rolls into the new property's cost basis and gets deferred until a future non-exchange sale. Held until death, it can be erased entirely through the stepped-up basis.

If you sell a $1M rental with $400k of gain, federal tax alone (capital gains + depreciation recapture) can exceed $100k. Add state tax in California or New York and you're looking at $130-180k. A 1031 exchange lets you keep every dollar of that working in your next property.

Why it exists

Section 1031 was written into the tax code in 1921. The theory: if you're not cashing out — if you're simply moving your investment from one form to another — the government shouldn't tax the paper gain. It encourages capital to stay deployed in productive assets rather than sit idle to avoid the taxable sale.

1031 exchanges have survived every major tax reform since, including the 2017 Tax Cuts and Jobs Act (which eliminated 1031 for personal property but preserved it for real estate) and the 2024-2026 budget debates. Talk of eliminating 1031 surfaces every few years and has never passed. Real estate investors can rely on it.

How a 1031 exchange works, step by step

The mechanics look simple from the outside: sell property, buy property, pay no tax. Under the hood there are six distinct steps, and every one of them has a way to go wrong.

Step 1: Engage a qualified intermediary before you list

The single most common mistake is closing your sale before setting up the exchange. Once you have constructive receipt of the funds — even for five minutes — the exchange is dead. Your QI must be in place, the exchange agreement signed, and the assignment language embedded in your sale contract before closing day. Lead time: two weeks minimum for a forward exchange, four to six for a reverse.

Step 2: Sell the relinquished property

At closing, the title company wires the proceeds directly to your QI's segregated exchange account. You never see the funds. The day of closing becomes Day 0 of your exchange clock.

Step 3: Identify replacement properties within 45 days

By midnight on Day 45, you must deliver a written, signed identification notice to your QI listing your potential replacement properties. You can use one of three identification rules (the 3-property rule, 200% rule, or 95% rule — covered below). After Day 45 you can't add to or swap out properties on your list.

Step 4: Negotiate and go under contract

While the 45-day clock is running you're also negotiating the purchase. Good practice: have at least one property in contract before Day 45 so identification isn't happening simultaneously with due diligence.

Step 5: Close on the replacement within 180 days

By midnight on Day 180 (from the original sale date, not from Day 45), you must close on a property on your identification list. Your QI wires the funds to the closing. You take title.

Step 6: File Form 8824

The exchange gets reported on IRS Form 8824 with your tax return the year of the exchange. Your CPA calculates the new basis in the replacement property, carrying over deferred gain and depreciation.

See the full 1031 exchange timeline for deadline details and the rules page for the IRS requirements at each step.

The core rules

Six rules define every 1031 exchange. Break any one and the tax deferral collapses.

The 45- and 180-day timelines

Two clocks start the day your relinquished property closes. They run concurrently, not sequentially.

The 45-day identification period

From Day 0 to Day 45, you must identify in writing the properties you intend to buy. The identification must be signed, delivered to your QI (not your agent, not your attorney — the QI), and specify properties unambiguously by address or legal description.

You get one of three identification rules. Pick the one that fits your strategy:

• 3-property rule: Identify up to 3 properties regardless of total value. The most common choice.
• 200% rule: Identify any number of properties as long as their combined fair market value doesn't exceed 200% of the relinquished property's sale price. Useful when you want a long shortlist.
• 95% rule: Identify any number of properties of any value, but you must close on properties representing at least 95% of the total identified value. Very risky — rarely used.

The 180-day exchange period

From Day 0 to Day 180, you must close on a replacement. Day 180 is absolute — even if your tax return due date arrives sooner (April 15 or extended), you can't close after Day 180 and still qualify. There's also a secondary rule: if your tax return is due before Day 180 and you haven't filed an extension, the exchange must close by the earlier date.

See the 1031 exchange timeline pillar for a visual chart and edge cases.

The qualified intermediary (QI)

The QI is the linchpin of the exchange. Without a QI, the tax code considers you to have received the sale proceeds — constructive receipt — and the exchange is void. The QI holds the money, signs the assignment documents, and facilitates the paperwork. You never touch the funds.

Critically, there's no federal licensing requirement to call yourself a QI. Anyone can open a bank account and start holding exchange funds. This creates real fraud risk — there have been cases where QIs commingled or embezzled funds and investors lost millions.

What to look for:

• Certified Exchange Specialist (CES) designation — voluntary certification through the Federation of Exchange Accommodators, requires five years of experience and passing an exam.
• Segregated accounts per client — your money sits in its own sub-account, not commingled.
• Fidelity bond and E&O insurance — financial backstop if something goes wrong.
• State-level bonding where required — California, Nevada, and a few others require QIs to hold bonds or written guarantees.
• References from CPAs and attorneys you trust — the real test.

Full details on the qualified intermediary pillar page.

Types of 1031 exchanges

Forward (delayed) exchange

The most common structure. Sell first, identify within 45 days, close within 180. What most people mean when they say “1031 exchange.” Fees typically $750–$1,500.

Reverse exchange

Buy the replacement before selling the relinquished property. Useful in competitive markets where you can't risk losing the replacement while you wait for your sale. Requires an Exchange Accommodation Titleholder (EAT) to hold the replacement until your sale closes. Complex and more expensive — typically $5,000–$10,000 in fees. See the reverse 1031 pillar for full details.

Improvement (construction) exchange

Use exchange funds to improve the replacement property before taking title. Lets you exchange into a property that's worth less than your relinquished sale by building value during the exchange period. Must be fully improved and transferred to you within 180 days.

DST (Delaware Statutory Trust) exchange

Exchange into a pre-packaged institutional property owned through a trust. You buy a fractional interest, receive monthly distributions, and have no landlord duties. Popular with investors who want to exit active management without exiting real estate. See the DST 1031 exchange page for how they work and common pitfalls.

What property qualifies

Since the 2017 Tax Cuts and Jobs Act, only real property held for investment or productive use qualifies. Personal property (equipment, vehicles, art) no longer qualifies.

Qualifying:

• Residential rental property (single-family, duplex, small multi-family)
• Apartment buildings and commercial multifamily
• Commercial office, retail, industrial, warehouse
• Hotels, motels, self-storage
• Vacant land held for investment
• Farmland and ranchland
• Mineral rights, water rights, oil and gas interests
• Leasehold interests of 30+ years

Not qualifying:

• Your primary residence (can be converted, but not exchanged directly)
• Vacation homes used primarily for personal use
• Fix-and-flip inventory (property held primarily for sale)
• Stock, bonds, REITs (REITs don't qualify as real property for 1031)
• Partnership interests (LLC interests have workarounds)
• Foreign property (US to US only — or foreign to foreign, but not mixed)

Edge cases — vacation rentals, short-term rentals, mixed-use properties, property held in LLCs — are where investors get into trouble. When in doubt, ask before you list.

Boot and partial exchanges

“Boot” is anything you receive in an exchange that isn't like-kind replacement property. Boot is taxable in the year of the exchange.

Three common sources:

• Cash boot: You sell for $1M, buy for $800k, walk away with $200k cash. That $200k is boot and is taxable.
• Mortgage boot (debt reduction): You sell with $500k of debt, buy with $400k of debt. The $100k debt reduction is boot, even though no cash changed hands.
• Non-like-kind property: Receiving personal property or non-qualifying assets as part of the trade.

Partial exchanges are legal and sometimes useful — if you want to cash out a portion of your equity and defer the rest, you simply accept boot on the cashed-out portion. Run the numbers carefully: the tax on boot can still be meaningful, especially with depreciation recapture stacked on top.

The 1031 exchange calculator will show you exactly how much boot you'd incur at different replacement property values.

Cost of a 1031 exchange

The QI fee is the bulk of the cost. Ranges by exchange type:

Minor additional costs: overnight shipping for documents, wire fees, and possibly a state filing fee. Total: the fee is almost always a fraction of 1% of the deal and a small fraction of the tax being deferred.

Top mistakes that kill a 1031 exchange

1. Missing the 45-day deadline. The number-one exchange killer. Start lining up replacements before you even list your sale.
2. Constructive receipt. If the sale proceeds touch your account, your attorney's trust account, or any account you have signature authority over — exchange void.
3. Using a disqualified person as QI. Your CPA, attorney, agent, or employee can't be your QI. IRS rule, not a preference.
4. Buying down. Replacement property smaller than sale price creates boot. Either buy equal/greater or accept you'll pay tax on the difference.
5. Debt down. Replacement mortgage smaller than old mortgage is mortgage boot, even with no cash out. Offset with cash from outside the exchange.
6. Using exchange funds for repairs. Exchange funds can only be used to acquire the replacement property, not to fix it up after closing. (Improvement exchanges have a specific structure for this.)
7. Exchanging into a property you'll live in too quickly. Converting a 1031 property to a primary residence has a 2-year holding rule. Move in at 6 months and the IRS can retroactively void the exchange.
8. Related-party exchanges without a 2-year hold. Exchanges between family members or controlled entities face a 2-year rule on both sides.

My free guide “Top 7 Mistakes That Kill a 1031 Exchange” walks through the most common failures from real client situations.

Is a 1031 exchange worth it for you

Three questions cut through the math:

1. What's your tax bill without it?

Federal capital gains at 15-20%, plus 25% depreciation recapture on years of depreciation taken, plus state tax at 0-13.3%, plus potentially NIIT at 3.8%. For most investors who've held a property 7+ years, total tax is 20-30% of the sale price. Run your actual number on the capital gains calculator.

2. Are you staying in real estate?

1031 defers tax, it doesn't eliminate it (until death). If you're exiting real estate entirely, you're just postponing the inevitable. If you're staying invested and want your equity compounding in the next property, 1031 is almost always correct.

3. Do you have time to do it right?

The 45-day identification deadline trips up even experienced investors. If you can't commit to shortlisting replacements before you list your sale, consider whether a 1031 will work or whether you're better off paying the tax.

Frequently asked questions