Form 8824 — Like-Kind Exchanges: The Complete Practitioner Guide to 1031 Exchange Reporting, Boot Calculation, Basis Carryover, and Depreciation Recapture in 2026
Form 8824 is the IRS form used to report like-kind exchanges under IRC §1031, one of the most powerful tax deferral tools available to real estate investors. A properly executed 1031 exchange allows a taxpayer to defer all capital gains tax and depreciation recapture on the sale of investment or business property by reinvesting the proceeds into a replacement property of like kind. For tax practitioners, Form 8824 is both a compliance document and a planning tool — the basis carryover rules, boot calculations, and depreciation recapture rules create significant planning opportunities and traps that require expert guidance. This guide provides the complete Form 8824 framework for 2026, including the strict timeline requirements, the boot calculation, the basis carryover formula, and the interaction with the depreciation recapture rules under IRC §1245 and §1250.
What Qualifies as a Like-Kind Exchange After TCJA
The Tax Cuts and Jobs Act of 2017 significantly narrowed the scope of like-kind exchanges. Prior to TCJA, like-kind exchanges were available for both real property and personal property (equipment, vehicles, artwork, collectibles). After TCJA, IRC §1031 applies only to real property. Personal property exchanges are no longer eligible for like-kind exchange treatment for exchanges completed after December 31, 2017.
For real property exchanges, “like-kind” is interpreted broadly. Any real property held for investment or productive use in a trade or business can be exchanged for any other real property held for investment or productive use in a trade or business. An apartment building can be exchanged for a commercial office building, a vacant lot, a farm, or a net-lease retail property. The properties do not need to be of the same type, quality, or value — they only need to be real property held for investment or business use. The following properties do not qualify for 1031 exchange treatment: (1) property held primarily for sale (dealer property, inventory); (2) stock in trade; (3) stocks, bonds, or other securities; (4) partnership interests; (5) certificates of trust or beneficial interests; and (6) personal residences (though the §121 exclusion may apply to the personal residence portion of a mixed-use property).
The Three Identification Rules: How to Identify Replacement Properties
The taxpayer must identify potential replacement properties in writing within 45 days of the closing of the relinquished property. The identification must be in writing, signed by the taxpayer, and sent to the qualified intermediary or the person obligated to transfer the replacement property. The IRS provides three identification rules, and the taxpayer must comply with at least one:
| Rule | Description | Best Used When |
|---|---|---|
| 3-Property Rule | Identify up to 3 replacement properties of any value | Taxpayer has 1–3 specific properties in mind; most commonly used rule |
| 200% Rule | Identify any number of properties as long as their total FMV does not exceed 200% of the relinquished property’s FMV | Taxpayer wants flexibility to identify more than 3 properties; useful in competitive markets |
| 95% Rule | Identify any number of properties of any value, but the taxpayer must actually receive 95% of the total FMV of all identified properties | Rarely used; very difficult to satisfy in practice |
Practitioners should advise clients to identify the maximum number of properties allowed under the applicable rule to preserve flexibility. If the identified property falls through, the client has backup options. The identification is irrevocable after the 45-day deadline — the taxpayer cannot add new properties to the identification list after the deadline, even if the originally identified properties are no longer available.
Boot: When the 1031 Exchange Becomes Partially Taxable
Boot is any property or cash received in a 1031 exchange that is not like-kind real property. Under IRC §1031(b), boot is taxable to the extent of the gain realized on the exchange. The most common types of boot are: (1) cash received from the exchange (including net debt relief); (2) non-like-kind property received; and (3) mortgage relief (if the taxpayer’s debt on the relinquished property exceeds the debt on the replacement property, the difference is treated as cash boot).
Boot Calculation Example
Client sells a rental property for $800,000 (adjusted basis: $300,000; outstanding mortgage: $400,000). Client acquires a replacement property for $700,000 (new mortgage: $350,000). Boot calculation:
- Gain realized: $800,000 − $300,000 = $500,000
- Cash received: $800,000 − $400,000 (mortgage payoff) − $700,000 (replacement property cost) + $350,000 (new mortgage) = $50,000 cash boot
- Mortgage relief boot: $400,000 − $350,000 = $50,000 (offset by cash paid for replacement property)
- Total boot: $50,000 cash + $50,000 net mortgage relief = $100,000 boot recognized
- Gain recognized: $100,000 (lesser of boot received or gain realized)
- Gain deferred: $500,000 − $100,000 = $400,000
Frequently Asked Questions
When the replacement property costs less than the relinquished property, the difference is treated as cash boot received by the taxpayer. The gain recognized equals the lesser of (1) the total boot received (cash + net mortgage relief) or (2) the total gain realized on the exchange. For example, if the client sells a property for $1,000,000 with an adjusted basis of $400,000 (gain realized: $600,000) and acquires a replacement property for $800,000, the client receives $200,000 of boot (the difference in value). The gain recognized is $200,000 (lesser of $200,000 boot or $600,000 gain realized), and the remaining $400,000 of gain is deferred. The $200,000 of recognized gain is taxed based on its character: first, any unrecaptured §1250 gain (depreciation on real property) is taxed at 25%; then, any remaining gain is taxed at the applicable long-term capital gains rate (0%, 15%, or 20% depending on the taxpayer’s income). The §1245 recapture rules also apply if the property includes any personal property components (e.g., appliances, equipment) that were depreciated as personal property rather than real property. Practitioners should model the tax cost of the partial exchange and compare it to the alternative of selling the property outright and paying all taxes, to determine whether the exchange is still beneficial despite the boot.
The basis carryover rules under IRC §1031(d) require that the adjusted basis of the relinquished property carry over to the replacement property, adjusted for any boot received or paid. The formula is: Basis of replacement property = Adjusted basis of relinquished property + Boot paid − Boot received + Gain recognized. This means the taxpayer’s low adjusted basis in the relinquished property carries over to the replacement property, which reduces future depreciation deductions and increases the gain on the eventual taxable sale of the replacement property. For depreciation purposes, the replacement property is treated as having two components: (1) the “exchanged basis” (the carryover basis from the relinquished property), which continues to be depreciated over the remaining useful life of the relinquished property; and (2) the “excess basis” (any additional cost paid for the replacement property above the carryover basis), which begins a new depreciation schedule over the full 27.5-year (residential rental) or 39-year (commercial) recovery period. This dual-depreciation treatment is required under Rev. Proc. 2004-11 and must be tracked carefully to ensure accurate depreciation deductions and correct gain calculations on the eventual sale.
The eligibility of a vacation home or second home for 1031 exchange treatment depends on how the property has been used. IRC §1031 requires that both the relinquished property and the replacement property be “held for productive use in a trade or business or for investment.” A personal vacation home that is used exclusively for personal purposes does not qualify for 1031 exchange treatment. However, a vacation home that has been rented to third parties and reported on Schedule E may qualify, depending on the extent of personal use. The IRS issued Revenue Procedure 2008-16, which provides a safe harbor for vacation homes: a vacation home qualifies as investment property for 1031 exchange purposes if (1) the taxpayer owned the property for at least 24 months before the exchange; (2) during each of the two 12-month periods before the exchange, the taxpayer rented the property at fair market rent for at least 14 days; and (3) during each of the two 12-month periods before the exchange, the taxpayer’s personal use of the property did not exceed the greater of 14 days or 10% of the number of days the property was rented at fair market rent. Properties that meet the Rev. Proc. 2008-16 safe harbor qualify for 1031 exchange treatment. Properties that do not meet the safe harbor may still qualify, but the taxpayer bears the burden of proving investment intent, which is a facts-and-circumstances analysis.
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