‘Boot’ is cash or other property added to an exchange to make the value of the traded goods equal. Cash boot is allowed to be part of a nonmonetary exchange under U.S. Generally Accepted Accounting Principles. However, for the exchange to qualify as nonmonetary, the value of the boot should be 25% or less of the total fair value of the exchange.
Boot in 1031 Exchanges refers to non-like-kind property received in an exchange. Usually boot is in the form of cash, an installment note, debt relief or personal property and is valued to be the “fair market value” of the non-like-kind property received.