Involuntary Conversions Under Section 1033: Replacement Periods for Real Estate and Farm Clients

A fire, a condemnation or a forced livestock sale can produce a taxable gain even though the owner did not choose to sell. Section 1033 lets the client defer that gain by reinvesting in similar property within a set period. The client has to make the election and then watch the clock. For farm and real estate clients, the replacement deadline is a calendar item that the CPA firm should own.

The rule

Section 1033(a)(1) provides that if property is compulsorily or involuntarily converted as a result of destruction in whole or in part, theft, seizure, or requisition or condemnation, or the threat or imminence of it, into property similar or related in service or use, no gain is recognized. Under section 1033(a)(2), if the proceeds are in money or dissimilar property, the taxpayer may elect to recognize gain only to the extent the amount realized exceeds the cost of qualifying replacement property purchased to replace the converted property. Property bought before the disposition qualifies only if the taxpayer still holds it on the date of the disposition (Treas. Reg. 1.1033(a)-2(c)(5)). Property received by gift or inheritance does not qualify.

The replacement period

The period begins on the date of disposition, or the earliest date of the threat or imminence of requisition or condemnation, whichever is earlier. Under section 1033(a)(2)(B) it ends 2 years after the close of the first taxable year in which any part of the gain is realized, or at a later date the Secretary designates on the taxpayer's application. The application goes in before the period expires, and Publication 544 states that high market value or scarcity of replacement property is not sufficient grounds for an extension.

Three special rules matter to our clients:

• Condemned real property. Under section 1033(g), if real property held for productive use in a trade or business or for investment (not stock in trade or property held primarily for sale) is condemned or sold under threat of condemnation, like-kind real property held for productive use in a trade or business or for investment is treated as similar or related in service or use. A landlord can replace a condemned building with different real estate. Under section 1033(g)(4), the period for this property is 3 years after the close of the first year gain is realized. Fire and theft do not qualify for the 3-year period.
• Livestock sold because of weather. Under section 1033(e), the sale of livestock (other than poultry) held for draft, breeding or dairy purposes, in excess of the number the farmer would sell under usual practices, is an involuntary conversion if the sale is solely on account of drought, flood or other weather-related conditions. If the area is designated as eligible for federal assistance, the replacement period is 4 years. Section 1033(f) allows reinvestment of the proceeds in other farm property where reinvestment in livestock is not feasible because of drought, flood, weather or soil or other environmental contamination.
• Federally declared disasters. Under section 1033(h), the period for a principal residence converted in a federally declared disaster is 4 years, and tangible business property in a disaster area can be replaced with other tangible property held for productive use in a trade or business.

How the election works

No form is filed. Under Treas. Reg. 1.1033(a)-2(c)(2), the taxpayer reports the details of the conversion on the return for the year gain is realized and includes in income only the gain not covered by replacement. Excluding the gain from income without recognizing it is itself treated as the election. Publication 544 calls for a statement attached to the return, and a second statement with the replacement details on the return for the year the replacement is bought.

If the client does not replace in time, or replaces at a lower cost than expected, tax for the affected years is recomputed on an amended return. A client who paid tax and later decides to elect before the period ends files a claim for refund. A deficiency tied to the gain can be assessed until 3 years after the taxpayer notifies the IRS of the replacement or of the decision not to replace.

Worked example: fire loss on a warehouse

A client's warehouse is destroyed by fire in March 2026. Adjusted basis is $400,000. Insurance pays $900,000 in 2026, the year the gain is realized. The client buys a replacement building in 2027 for $780,000.

• Realized gain: $900,000 minus $400,000, or $500,000.
• Replacement deadline: 2 years after the close of 2026, which is December 31, 2028.
• Excess of amount realized over replacement cost: $900,000 minus $780,000, or $120,000. Gain recognized is the lesser of that excess and the realized gain, so $120,000.
• Gain deferred: $500,000 minus $120,000, or $380,000.
• Basis of replacement building: cost of $780,000 minus deferred gain of $380,000, or $400,000.

If the client buys another $120,000 of qualifying replacement property by December 31, 2028, the remaining gain is deferred too, and the CPA files an amended return for 2026.

Worked example: condemned farmland

A state notifies a farm client in November 2025 that it has decided to acquire 40 acres for a highway, and the client has reasonable grounds to believe condemnation will follow if the land is not sold. The client sells under that threat in 2026 for $300,000. Basis in the 40 acres is $90,000.

• Period starts: November 2025, the earlier of the threat and the disposition.
• Realized gain: $300,000 minus $90,000, or $210,000, all in 2026.
• Deadline: 3 years after the close of 2026, which is December 31, 2029. Farmland held for business use is condemned real property, so the 3-year period applies and replacement can be any like-kind real property held for business or investment.
• The client buys other farmland for $350,000 in 2027. Cost exceeds the $300,000 amount realized, so no gain is recognized.
• Basis of the new land: $350,000 minus $210,000, or $140,000.

Common errors

• Counting the replacement period from the date of the casualty instead of from the close of the first year gain is realized.
• Applying the 3-year period to fire, theft or a voluntary sale. It applies only to condemnation or a sale under threat of condemnation.
• Treating a replacement bought before the conversion as qualifying when the client did not hold it on the disposition date.
• Reducing basis of the replacement by the realized gain instead of the deferred gain.
• Missing the amended return when the client buys a cheaper replacement or lets the period lapse.

Client engagement steps

• Identify the date of conversion and the year gain is realized, then calendar the replacement deadline.
• Collect insurance settlement statements and appraisals, and allocate proceeds among building, contents and business interruption.
• Document replacement purchases and show the purpose of replacement.
• Attach the election statement to the return for the first year gain is realized.
• Review section 1231 treatment of any recognized gain in the section 1231 guide and recapture in the section 1245 and 1250 guide.
• For farm clients, see the farm audit guide for livestock and government payment issues.

Sources

• Legal Information Institute, 26 U.S.C. 1033, Involuntary conversions: https://www.law.cornell.edu/uscode/text/26/1033
• Treasury Regulation 1.1033(a)-2, election, replacement period and replacement property acquired before the conversion: https://www.law.cornell.edu/cfr/text/26/1.1033(a)-2
• Internal Revenue Service, Publication 544, Sales and Other Dispositions of Assets: https://www.irs.gov/publications/p544

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