1031 Exchange Boot Calculator Pro (USA)
Accurately estimate your Capital Gains Tax & Mortgage Boot
Understanding 1031 Exchange Boot & Tax Implications
A 1031 Exchange allows real estate investors in the USA to defer paying capital gains taxes on the sale of a property, provided they reinvest the proceeds into a “like-kind” property. However, if the exchange is not perfectly balanced, the IRS taxes the difference, known as “Boot”.
What is “Boot”?
Boot is any cash or fair market value of non-like-kind property received by the taxpayer in an exchange. There are two main types:
- Cash Boot: When you pull out cash that is not reinvested. (Example: Selling for $500k and only buying for $400k).
- Mortgage Boot: When your mortgage debt decreases (i.e., you pay off a loan and don’t take on an equal or larger new loan).
How to Avoid Boot Tax?
To fully defer taxes and avoid Boot calculated by this tool, you must follow the Three Rules of 1031:
- Buy Equal or Greater Value: The purchase price of the new property must be equal to or greater than the net sale price of the old property.
- Reinvest All Equity: All cash from the sale (minus closing costs) must be used to buy the new property.
- Equal or Greater Debt: The new mortgage must be equal to or greater than the mortgage paid off on the old property (or bring cash to close the gap).
Disclaimer: This 1031 Exchange Boot Calculator Pro (USA) is for estimation purposes only. Please consult with a qualified CPA or tax advisor for official tax filings.

