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- What IRC Section 1031 actually does
- Only qualifying real property is eligible
- “Like kind” is broad for domestic real estate
- A sale followed by a purchase is not automatically an exchange
- The 45-day and 180-day clocks run concurrently
- Identification has quantity and value limits
- Cash and other property create partial recognition
- Basis carries the deferred gain forward
- Related-party exchanges receive special scrutiny
- Vacation homes need a genuine investment purpose
- Reporting closes the loop
- Sources
Key Facts
- Federal level: IRC Section 1031 generally defers—not permanently erases—gain or loss when qualifying real property is exchanged solely for like-kind real property.
- Federal level: For exchanges completed after 2017, Section 1031 applies only to real property held for business or investment, not personal property.
- Federal level: Real property held primarily for sale, such as dealer inventory, does not qualify.
- Federal level: A deferred exchange generally requires written identification within 45 days and receipt by the earlier of 180 days or the tax-return due date, including extensions.
- Federal level: Cash, debt relief, or other non-like-kind property can trigger current gain even when the real-property exchange otherwise qualifies.
- Federal level: Form 8824 reports the exchange, and related-party exchanges can require follow-up reporting for two years.
What IRC Section 1031 actually does
Section 1031 is a federal income-tax nonrecognition rule for an exchange of qualifying real property. When its conditions are met, current gain or loss is generally not recognized on the like-kind portion of the exchange.
“Nonrecognition” usually means deferral. The replacement property’s basis generally carries forward the unrecognized economics of the relinquished property, so a later taxable disposition can bring the deferred gain into account.
The rule is not a special tax rate, a deduction, or permission to ignore a sale. It changes when gain or loss is recognized and how basis is computed.
Only qualifying real property is eligible
Since the Tax Cuts and Jobs Act change effective for most exchanges completed after December 31, 2017, Section 1031 has been limited to real property. Vehicles, machinery, equipment, artwork, securities, partnership interests, and other personal or intangible property do not independently qualify under the modern rule.
Both the relinquished property and replacement property must be held for productive use in a trade or business or for investment. Real property held primarily for sale is expressly excluded, making the taxpayer’s purpose and conduct important when property resembles dealer inventory or development stock.
A personal residence used solely as a home does not satisfy the business-or-investment holding requirement. Mixed-use and former rental homes require allocation and purpose analysis, while Section 121 may separately affect qualifying principal-residence gain.
“Like kind” is broad for domestic real estate
For real property, like kind refers to nature or character rather than grade or quality. Improved real estate can generally be like kind to unimproved land, and one investment real-estate interest can be like kind to another despite differences in location, use, or building quality.
The real-property regulations address land and improvements, certain options and similar interests, shares in qualifying mutual ditch or irrigation companies, and other intangible interests that can be treated as real property. Assets classified as real property under state or local law often qualify, but the federal regulatory tests still control.
Real property in the United States is not like kind to real property outside the United States. A domestic-to-foreign swap therefore cannot rely on Section 1031’s like-kind rule.
Readers focused on classification rather than the statute’s full structure can compare the rules for a like-kind 1031 exchange.
A sale followed by a purchase is not automatically an exchange
Section 1031 requires an exchange. A taxpayer who sells property, takes unrestricted control of the proceeds, and later purchases another property generally has a taxable sale followed by a separate acquisition.
Deferred exchanges commonly use a qualified intermediary under a regulatory safe harbor. The intermediary is not simply the taxpayer’s agent holding money; the exchange agreement and restrictions on the taxpayer’s access to proceeds are central to the safe harbor.
A related party or a person who served as the taxpayer’s agent during the relevant period can be a disqualified person and generally cannot act as the qualified intermediary. Choosing the structure before the transfer is critical because receiving proceeds cannot ordinarily be undone later.
The 45-day and 180-day clocks run concurrently
Replacement property in a deferred exchange must be identified in a signed writing within 45 days after transfer of the relinquished property. The description must be clear and recognizable, and the writing must be delivered to a permitted person involved in the exchange.
The replacement property must then be received by the earlier of 180 days after the transfer or the due date, including extensions, of the return for the transfer year. The 180-day period begins on the same transfer date as the 45-day period; it does not begin when identification ends.
The regulations generally do not extend these periods merely because the deadline lands on a weekend or holiday. Federally declared disasters can produce specific IRS postponement relief, but relief must be confirmed for the affected taxpayer, area, act, and deadline.
Identification has quantity and value limits
A taxpayer can generally identify up to three replacement properties without regard to value. Alternatively, more properties may be identified if their aggregate fair market value does not exceed 200% of the aggregate fair market value of all relinquished properties.
If neither limit is met, the identification may still be respected under the 95% rule when the taxpayer actually receives identified property worth at least 95% of the aggregate value of all identified properties. These are identification rules, not promises that every listed acquisition will otherwise qualify.
Property already received before the end of the identification period is treated as identified. A later substitution after the deadline generally cannot repair a failed or ambiguous identification.
Cash and other property create partial recognition
An exchange can include money or non-like-kind property, often called “boot,” and still qualify in part. The taxpayer generally recognizes gain up to the money and fair market value of other non-like-kind property received, limited by realized gain.
Liabilities complicate the computation. Debt from which the taxpayer is relieved can be treated as money received, while liabilities assumed or paid can offset that amount under the applicable rules.
A loss is generally not recognized in an otherwise qualifying exchange even when boot is received. The recognized-gain and replacement-basis calculations should reconcile consideration, liabilities, exchange expenses, adjusted basis, and fair market values.
Basis carries the deferred gain forward
The basis of replacement property generally starts with the adjusted basis of property transferred, then reflects money paid or received, recognized gain, recognized loss where allowed, and other property involved. The Form 8824 computation produces the basis reported for the like-kind property received.
Lower carryover basis is the mechanism that preserves deferred gain. If replacement property is later sold in a taxable transaction, the difference between proceeds and adjusted basis can include gain deferred from the earlier exchange.
Depreciation adds another layer. Depreciation methods, remaining basis, additional basis, and potential recapture or unrecaptured Section 1250 gain can require separate calculations even when Section 1031 defers part of the overall gain.
Related-party exchanges receive special scrutiny
Section 1031(f) limits exchanges between related persons. If either party disposes of property received within two years after the last transfer, deferred gain or loss generally becomes reportable unless a statutory exception applies.
Death, certain involuntary conversions, and dispositions shown not to have tax avoidance as a principal purpose can fall within exceptions. Transactions structured through an intermediary to avoid the related-party rule can be disqualified.
Form 8824 asks related-party questions, and the form generally remains required for each of the two years following the exchange. Indirect ownership and disregarded entities can matter when identifying a related person.
Vacation homes need a genuine investment purpose
A vacation home does not qualify merely because it may appreciate. Revenue Procedure 2008-16 provides an optional safe harbor for dwelling units that meet ownership, fair-rental, and limited personal-use standards.
For relinquished property, the safe harbor generally requires ownership for at least 24 months immediately before the exchange and qualifying rental in each of the two 12-month periods. For replacement property, corresponding requirements apply during the 24 months immediately after the exchange.
Within each relevant 12-month period, the unit generally must be rented at a fair rental for at least 14 days, and the taxpayer’s personal use cannot exceed the greater of 14 days or 10% of the days rented at a fair rental. Falling outside the safe harbor does not automatically decide the issue, but the taxpayer must establish investment or business holding under the broader facts.
Reporting closes the loop
Form 8824 is filed with the federal return for the year the taxpayer transfers relinquished property. It records the properties, dates, related-party information, value and basis figures, recognized gain, and basis of replacement property.
Recognized amounts may also flow to Form 4797, Schedule D, Form 6252, or another return schedule depending on the property and transaction. Multiple-property exchanges and mixed Section 121/1031 transactions can require worksheets or attachments described in the instructions.
Records should include closing statements, the exchange agreement, assignment notices, identification delivery evidence, deeds, appraisals or value support, liability figures, expense allocations, depreciation schedules, and the filed Form 8824. These records support both the current deferral and basis on a later disposition.
