What is a 1031 tax-deferred exchange, what timeline rules must be followed, and what is the treatment of boot (cash or other property received)?

Topic: Taxation Updated: April 2026
Quick Answer

A 1031 exchange (Section 1031 of the Internal Revenue Code) allows real estate investors to defer capital gains taxes by selling one property and purchasing another similar property. The exchangor must identify a replacement property within 45 days of sale and close on it within 180 days of the sale. If the exchangor receives boot (cash or other property in excess of the property exchanged), that boot is subject to capital gains tax, potentially limiting the tax deferral benefit.

Key Takeaways

  • The exchangor must identify a replacement property within 45 days of sale and close on it within 180 days of the sale.
  • If the exchangor receives boot (cash or other property in excess of the property exchanged).
  • Rules vary by state; always learn your specific state's requirements.

Taxation on the Real Estate Exam

1031 exchanges are a powerful tax deferral tool used extensively by real estate investors to build portfolios without triggering capital gains taxes. Real estate agents working with investment clients need to understand 1031 exchange mechanics to identify potential strategies, recognize timing requirements, and work effectively with qualified intermediaries who facilitate these transactions. Agents who understand 1031 exchanges can provide valuable guidance to investor clients and position themselves as knowledgeable professionals in the investment market.

Understanding Taxation: Key Concepts

A 1031 exchange is a tax deferral strategy that allows property owners to sell real property and reinvest the proceeds in other real property of equal or greater value without triggering capital gains taxes on the sale. Section 1031 of the Internal Revenue Code permits this deferral because the tax law views the transaction as a swap or exchange of similar assets rather than a taxable sale. In practice, 1031 exchanges require a qualified intermediary (a third party) to hold the sale proceeds because if the seller touches the money, the Internal Revenue Service disqualifies the exchange and taxes all capital gains. Qualified intermediaries are typically title companies, real estate attorneys, or specialized 1031 exchange companies who handle the money and documentation.

Strict timelines govern 1031 exchanges and failing to meet them disqualifies the exchange and triggers immediate taxation. The first timeline is the 45-day identification period, which begins on the day the original property closes (not the contract date) and requires the exchangor to identify potential replacement properties by written notice to the qualified intermediary. The exchangor may identify up to three properties without limitation, or more properties if their total value does not exceed 200% of the relinquished (sold) property's value, or an unlimited number of properties if the exchangor closes on at least 95% of the identified properties by the 180-day deadline. The second timeline is the 180-day exchange period, which begins on the same day as the 45-day period and requires the exchangor to actually close on at least one identified replacement property by day 180.

Boot is any property or cash received by the exchangor that is not real property of like-kind. Boot can come in several forms: cash received from the exchange (if the replacement property is less valuable than the relinquished property), other types of property received, or debt relief (if the replacement property assumes a smaller mortgage). Boot received is subject to capital gains taxation to the extent of boot received or gain realized, whichever is less. For example, if an investor sells a property with a $100,000 gain and receives $20,000 in boot (cash or other property), tax is owed on the $20,000 boot received. This partial tax recognition allows investors to reduce the value of replacement property below the sale price while still deferring taxes on the core reinvested amount. The concept of like-kind has been interpreted broadly to include most real property, including residential, commercial, raw land, apartment buildings, and even exchange of direct ownership for partnership interests in real property.

Taxation Rules by State

Each state has its own rules when it comes to taxation. Here are a few examples of how requirements differ:

California

California recognizes federal 1031 exchanges for state income tax purposes, allowing deferral of California state capital gains tax in addition to federal tax. This makes 1031 exchanges particularly valuable in California due to the state's high income tax rates, up to 13.3%. However, California taxes any boot received at ordinary income rates. A 1031 exchange in California provides substantial tax savings compared to a standard sale-and-purchase because it defers both federal and state capital gains taxes, though investors must be careful to follow the strict timelines. Many California investors use 1031 exchanges to build portfolios efficiently.

Texas

Texas has no state income tax, so 1031 exchanges in Texas provide deferral of federal capital gains taxes only. The benefit is less dramatic than in high-income-tax states, but investors still benefit from tax deferral allowing compounding of reinvested capital. Many Texas investors use 1031 exchanges for portfolio expansion and to move capital among properties efficiently. The mechanics and timelines are identical to federal law, and qualified intermediaries in Texas follow the same 45-day and 180-day rules.

Florida

Florida has no state income tax, so like Texas, 1031 exchanges provide federal capital gains tax deferral only. Florida investors benefit from the same strategic advantages as other investors, including timing flexibility and portfolio rebalancing without triggering capital gains tax. The warm climate and growing real estate market make Florida attractive for investors executing 1031 exchanges, particularly for retirees and those relocating from high-tax states. Florida's real estate market provides many replacement property options for investors meeting the 45-day and 180-day timelines.

Exam Tip

Remember the two critical timelines: 45 days to identify and 180 days to close. If the exchangor touches the money, the exchange fails. Boot is taxable up to the amount received or gain realized, whichever is less. Like-kind exchanges apply to most real property but not cryptocurrency, personal property, or securities. A qualified intermediary must hold proceeds, not the exchangor. Understand that deferral is the benefit, not elimination; taxes are owed eventually when property is sold without another 1031 exchange.

Rules vary across all 50 states

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