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Like-Kind Exchange (1031) on the CPA Exam

Think CPA Team-July 15, 2025

Section 1031 like-kind exchanges are a staple of the REG section of the CPA exam. The concept is straightforward in theory, you swap one piece of qualifying property for another and defer the gain, but the details and calculations can get tricky. The exam loves to test your ability to calculate recognized gain, deferred gain, and the basis in the new property, especially when boot is involved.

This guide covers everything you need to know about like-kind exchanges for the CPA exam, from the basic requirements to the most common calculation patterns you will see on test day.

What Qualifies as Like-Kind Property

Under current law (post-2017 Tax Cuts and Jobs Act), Section 1031 applies only to real property. Before 2018, personal property could also qualify, but the TCJA eliminated that. This is a critical point for the exam: if a question involves an exchange of equipment, vehicles, or other personal property, Section 1031 does not apply.

For real property, the like-kind requirement is quite broad:

  • Improved real property can be exchanged for unimproved real property.
  • A commercial building can be exchanged for farmland.
  • A rental house can be exchanged for a strip mall.
  • Domestic real property cannot be exchanged for foreign real property.

The key requirement is that the property must be held for productive use in a trade or business or for investment. Property held primarily for sale (like inventory or a property flipped by a dealer) does not qualify. Personal-use property like a primary residence also does not qualify.

Understanding Boot

Boot is anything received in the exchange that is not like-kind property. Common examples of boot include:

  • Cash received
  • Personal property received (equipment, vehicles)
  • Net debt relief (when the other party assumes more of your liabilities than you assume of theirs)

When boot is received, gain is recognized to the extent of the boot. However, the recognized gain can never exceed the total realized gain. Here is the critical formula:

Recognized gain = lesser of (1) gain realized or (2) boot received.

Important: a taxpayer who receives boot can recognize gain but can never recognize a loss in a like-kind exchange. Losses are always deferred, regardless of boot.

Boot Netting Rules

When both parties exchange liabilities along with property, you need to net the liabilities to determine boot. Debt relief is treated as boot received, and debt assumed is treated as boot paid. The exam frequently tests this concept:

  • If you are relieved of a $200,000 mortgage and assume a $150,000 mortgage, your net boot received is $50,000.
  • Cash paid can offset debt relief, but cash received cannot offset debt assumed.
  • Net boot received triggers gain recognition; net boot paid does not.

Basis Calculation in the New Property

The basis of the property received in a like-kind exchange is calculated to preserve the deferred gain. There are multiple formulas that get you to the same answer. Here is the most reliable approach for the exam:

Basis of new property = FMV of new property - deferred gain + deferred loss.

You can also think of it as:

Basis of new property = adjusted basis of old property - boot received + boot paid + gain recognized.

The deferred gain is built into the lower basis of the new property. When the taxpayer eventually sells the new property in a taxable transaction, the deferred gain will be recognized at that time. This is the fundamental policy behind Section 1031: gain is deferred, not forgiven.

Step-by-Step Calculation Example

Let us work through a typical exam-style problem:

A taxpayer exchanges a warehouse (adjusted basis $300,000, FMV $500,000, subject to a mortgage of $100,000) for an office building (FMV $450,000, subject to a mortgage of $50,000). The taxpayer also receives $10,000 in cash.

  1. Gain realized: FMV received ($450,000 + $50,000 debt relief + $10,000 cash) minus adjusted basis and liabilities ($300,000 + $100,000 assumed) = $510,000 - $400,000 = $110,000 total. Actually, let us be more precise. Amount realized = FMV of new property ($450,000) + cash received ($10,000) + debt relief ($100,000) - debt assumed ($50,000) = $510,000. Gain realized = $510,000 - $300,000 basis = $210,000.
  2. Boot received: Net debt relief ($100,000 - $50,000 = $50,000) + cash received ($10,000) = $60,000.
  3. Gain recognized: Lesser of gain realized ($210,000) or boot received ($60,000) = $60,000.
  4. Deferred gain: $210,000 - $60,000 = $150,000.
  5. Basis of new property: FMV of new property ($450,000) - deferred gain ($150,000) = $300,000.

Timeline Requirements: Deferred Exchanges

Most like-kind exchanges are not simultaneous. In a deferred (or Starker) exchange, the taxpayer uses a qualified intermediary to facilitate the transaction. The IRS imposes strict timeline requirements:

  • 45-day identification period: The taxpayer must identify potential replacement properties within 45 days of transferring the relinquished property.
  • 180-day exchange period: The taxpayer must receive the replacement property within 180 days of transferring the relinquished property (or by the due date of their tax return, including extensions, if earlier).
  • Three-property rule: The taxpayer may identify up to three potential replacement properties regardless of their value, or any number of properties as long as their combined FMV does not exceed 200 percent of the relinquished property's FMV.

These deadlines are strict and cannot be extended, even for weekends or holidays. Missing either deadline disqualifies the exchange from Section 1031 treatment, making the transaction fully taxable.

Related Party Rules

Section 1031(f) imposes special rules for exchanges between related parties. If either the taxpayer or the related party disposes of the exchanged property within two years of the exchange, the original exchange is disqualified and the deferred gain is recognized. Related parties include family members (siblings, spouse, ancestors, lineal descendants) and entities with more than 50 percent common ownership.

Exceptions apply when the disposition is due to death, involuntary conversion, or when the IRS is satisfied that tax avoidance was not a principal purpose.

Common Exam Traps

  • Personal property: Remember that Section 1031 no longer applies to personal property after 2017.
  • Losses: A loss is NEVER recognized in a like-kind exchange, even when boot is received.
  • Boot given vs. boot received: Only boot received triggers gain. Boot paid (cash or additional liabilities assumed) does not.
  • Depreciation recapture: On exchange of real property, any Section 1250 recapture may be triggered by the exchange.
  • Primary residence: A personal residence does not qualify. It must be held for business use or investment.

Practice Strategy

Like-kind exchange problems are almost always calculation-based on the CPA exam. The best way to prepare is to practice the three-step process repeatedly: (1) calculate gain realized, (2) determine boot received and gain recognized, and (3) compute basis in the new property. If you can do these three steps correctly and quickly, you will nail any 1031 question on the exam.

Think CPA includes a full set of 1031 exchange practice problems in the REG course, ranging from basic two-party exchanges to complex deferred exchanges with multiple properties and debt netting. Mastering these calculations through repetition is the key to exam success.

With a solid understanding of qualifying property, boot treatment, basis formulas, and timeline rules, you will be ready to handle whatever Section 1031 questions appear on your exam.