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1031 Exchange Boot and When Tax May Be Due

Writer: Taxulo Real Estate & 1031 Team
Taxulo Real Estate & 1031 Team
Oct 7
3 min read
Real estate investor and tax advisor reviewing property closing documents.

A 1031 exchange can postpone tax, but you may still owe tax if you receive cash or other nonqualifying value. This is commonly called boot. Receiving boot does not necessarily disqualify the entire exchange.


The amount you owe depends on the gain from the exchange and the value you receive outside qualifying real estate. Understanding those amounts before closing helps you decide how much to reinvest and how much cash, if any, to keep. A partial exchange can still support your investment goals when the tax cost is planned.


  • Common types of boot

Boot can include cash you keep instead of reinvesting, furniture or equipment received with the replacement property, and certain net debt relief. Some closing costs and adjustments can also affect the taxable result.

Cash boot often occurs when the qualified intermediary returns unused exchange proceeds to you. Noncash boot can arise when a purchase includes assets that do not qualify for Section 1031 treatment. A furnished rental, for example, may include furniture that needs separate treatment from the building. The purchase price should be allocated carefully.

  • A simple cash example

An investor exchanges property worth $700,000 with an adjusted tax basis of $300,000 for qualifying property worth $650,000 and $50,000 in cash. Ignoring debt and expenses, the gain is $400,000. The cash may cause $50,000 of gain to be taxable now, while the remaining gain may be deferred.

In this example, the $50,000 is taxable gain, not the amount of tax owed. The actual tax depends on the investor’s circumstances, including the character of the gain and the property’s depreciation history. Real transactions also include closing costs and financing, so this simplified example should not replace a full calculation.

  • Debt changes affect the calculation

Paying off a mortgage on the old property without replacing that debt or contributing enough additional cash may create taxable boot. A lower replacement mortgage does not automatically mean tax is due; the complete transaction must be calculated.

This is why reviewing only the selling price and purchase price is not enough. Your advisor also needs the mortgage payoff, replacement loan amount, cash contribution, and settlement costs. These details show whether the replacement transaction offsets the debt relief and how much gain may need to be reported now.

  • Plan the amount you reinvest

For full deferral, a common planning guideline is to reinvest all net exchange proceeds and buy property of equal or greater value. Debt, closing expenses, and other assets still need separate review. Boot is generally taxable only up to the realized gain, and the applicable tax treatment depends on the property and its history.

Review the draft closing statement before the transaction is finalized. Brokerage commissions and certain legal or title costs may be treated differently from loan fees, property taxes, rent adjustments, repairs, and security deposits. Do not assume that every payment made from exchange funds counts toward a fully deferred exchange.

  • Review the numbers before closing

Taxulo can help calculate potential taxable gain and review closing statements so you understand the tax cost before completing the exchange.

Bring your original purchase records, improvement costs, depreciation schedules, mortgage information, and proposed replacement purchase details to the review. These records help establish your adjusted tax basis and support a clearer estimate of the result. Plan for any tax due as part of your cash needs, alongside reserves and the costs of operating the new property.



Frequently asked questions

Does boot cancel the entire 1031 exchange?

Not necessarily. A qualifying exchange can be partially taxable. Some gain may be taxed now while the remaining qualifying gain is deferred.urposes.

Yes, but keeping cash may create taxable gain. Review the expected tax cost before closing.

No. Additional cash contributed and other transaction details can offset debt relief. The full exchange calculation determines the result.

No. Boot may create recognized gain, generally limited by the gain realized. The tax owed depends on the applicable tax treatment and your circumstances.



Not Sure If Your 1031 Exchange Will Trigger Tax?

Receiving cash or debt relief in a 1031 exchange may create taxable “boot.” Taxulo can help you understand when tax may be due and review your exchange before closing.




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