IRC 1031 Like-Kind Exchange: Complete Rules, Timelines, and Qualification Requirements for Real Estate

By Yarik Yarosh, CPA ·September 5, 2026 ·7 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

The 1031 like-kind exchange is the single most powerful tax deferral tool available to real estate investors. Under IRC 1031, a taxpayer who sells real property held for investment or business use and reinvests the proceeds into replacement real property can defer recognition of all capital gains, depreciation recapture, and net investment income tax. The deferral is not a reduction in tax but a postponement: the gain is preserved in a lower basis in the replacement property. However, through sequential 1031 exchanges and the stepped-up basis at death (IRC 1014), the deferred gain can be permanently eliminated, making the 1031 exchange one of the few ways to legally avoid capital gains tax entirely. The rules are technical and unforgiving: missing the 45-day identification deadline by even one day disqualifies the exchange entirely, and constructive receipt of the proceeds (even momentarily) can blow the entire deferral. Working with a qualified intermediary and understanding the identification rules, boot rules, and related-party restrictions is essential for a successful exchange.

✓Key takeaway

1031 exchange requirements:

Requirement	Rule
Property type	Real property only (since TCJA 2017); personal property does not qualify
Held for	Investment or productive use in a trade or business (NOT primary residence, NOT inventory/property held for sale)
Like-kind definition	Any real property for any other real property (apartment for office, raw land for warehouse, etc.)
Qualified intermediary (QI)	Required; holds the proceeds between sale and purchase; cannot be the taxpayer, their agent, attorney, accountant, or employee
45-day identification period	Must identify replacement property(ies) within 45 calendar days of closing on the relinquished property
180-day exchange period	Must close on the replacement property within 180 calendar days of closing on the relinquished property
Equal or greater value	To defer ALL gain, the replacement property must be equal to or greater than the relinquished property in both value and equity
Boot	Any cash or non-like-kind property received is taxable (to the extent of gain)

Identification rules (45-day deadline):

Rule	Limit
3-property rule	Identify up to 3 properties (any value)
200% rule	Identify any number of properties, but their combined FMV can’t exceed 200% of the relinquished property’s FMV
95% rule	Identify any number of properties of any value, but must acquire at least 95% of the aggregate FMV of identified properties

How does a 1031 exchange work step by step?

Hypothetical example

Round numbers. An investor sells a rental property (the “relinquished property”) for $1,000,000.

Relinquished property details:

Item	Amount
Original purchase price	$500,000
Depreciation taken	$150,000
Adjusted basis	$350,000
Sale price	$1,000,000
Selling costs (commissions, closing)	$60,000
Net proceeds	$940,000
Total gain	$590,000

Tax if sold without a 1031 exchange:

Tax Component	Amount	Rate	Tax
Depreciation recapture ($150,000)	$150,000	25%	$37,500
Capital gain ($590,000 - $150,000 = $440,000)	$440,000	20%	$88,000
NIIT on all gain	$590,000	3.8%	$22,420
Total tax without exchange			$147,920

1031 exchange timeline:

Day	Action
Day 0	Close on sale of relinquished property; proceeds go to qualified intermediary ($940,000)
Day 1-45	Identify replacement property(ies) in writing to the QI
Day 45	Identification deadline (no extensions, no exceptions)
Day 46-180	Close on replacement property; QI sends proceeds directly to closing
Day 180	Exchange deadline

Replacement property requirements to defer ALL gain:

Requirement	Needed	Example
Value = or > relinquished	$1,000,000 or more	Buy property for $1,200,000
Equity = or > relinquished equity	$940,000 or more (net proceeds)	Put $940,000 from exchange + $260,000 new mortgage
Use all exchange proceeds	$940,000 (entire QI-held amount)	All proceeds go to the purchase
No cash received (no boot)	$0	QI sends all funds to closing

Result if fully deferred:

Item	Amount
Tax deferred	$147,920
Replacement property basis	$560,000 ($1,200,000 purchase price - $590,000 deferred gain - $50,000 adjustment for new debt)
Carryover depreciation schedule	Restart depreciation from the new (lower) basis

What creates “boot” (taxable portion):

Situation	Boot Amount	Taxable?
Cash left over with the QI	Whatever the QI holds after closing	Yes (to extent of gain)
Mortgage on replacement property is LESS than mortgage on relinquished property	The difference (net debt relief)	Yes
Replacement property value is LESS than relinquished property	The difference	Yes
Non-real-property received (personal property, fixtures separately priced)	FMV of non-real property	Yes

Example with partial boot:

Item	Amount
Relinquished property sale price	$1,000,000
Mortgage paid off at closing	$300,000
Net proceeds to QI	$640,000
Replacement property purchase price	$800,000
New mortgage	$200,000
Exchange funds used	$600,000
Cash boot (remaining with QI)	$40,000
Mortgage boot (net debt relief: $300K old - $200K new)	$100,000
Total boot	$140,000
Tax on boot (to extent of gain, at applicable rates)	~$32,000

Reverse exchange (buy replacement first):

Step	Action
1	Exchange Accommodation Titleholder (EAT) purchases the replacement property
2	EAT holds the replacement property (for up to 180 days)
3	Taxpayer sells the relinquished property
4	EAT transfers the replacement property to the taxpayer
5	Same 45-day identification and 180-day exchange deadlines apply

Reverse exchanges are more expensive (the EAT charges fees, and financing the EAT’s holding period adds costs), but they allow the taxpayer to secure a replacement property before selling the relinquished property.

Related-party rules (IRC 1031(f)):

Rule	Details
Exchanges with related parties	Permitted, but gain is recognized if either party disposes of the property within 2 years
Related parties	Family members (siblings, spouse, ancestors, lineal descendants), entities with 50%+ common ownership
Holding requirement	Both parties must hold for 2 years; any disposition within 2 years triggers the deferred gain

“Swap till you drop” strategy:

Step	Action
1	Investor performs 1031 exchanges throughout lifetime, deferring all gains
2	At death, all deferred gains are eliminated by the IRC 1014 stepped-up basis
3	Heirs inherit the final replacement property with FMV basis
4	Heirs can sell immediately with zero capital gains tax
Total gain permanently eliminated	Could be millions of dollars over a lifetime of exchanges

Disqualified property (can’t use 1031):

Property	Why
Primary residence	Not held for investment or business use
Property held for sale (flips, dealer inventory)	Held for sale to customers, not investment
Stock, bonds, partnership interests	Not real property
Personal property (vehicles, equipment, art)	TCJA 2017 eliminated 1031 for personal property
Property outside the U.S. (if relinquished property is domestic)	Must exchange domestic for domestic, or foreign for foreign

Illustrative numbers only, not a real client and not advice for your facts.

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Cite this page

Yarik Yarosh, CPA. "IRC 1031 Like-Kind Exchange: Complete Rules, Timelines, and Qualification Requirements for Real Estate." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/small-business-like-kind-exchange-1031-rules-requirements-timeline

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.