1031 Exchange Calculator

A 1031 exchange lets real estate investors defer capital gains tax by selling one investment property and reinvesting the proceeds into a 'like-kind' replacement property.

Instant Result
Realized Gain -
Taxable Boot Received -
Recognized (Taxable) Gain -
Deferred Gain -
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What Is a 1031 Like-Kind Exchange Calculator?

A 1031 exchange lets real estate investors defer capital gains tax by selling one investment property and reinvesting the proceeds into a 'like-kind' replacement property. If you reinvest everything (and more), the gain is fully deferred; if you take cash out or buy something cheaper, that portion (called 'boot') becomes immediately taxable.

How to Use This 1031 Like-Kind Exchange Calculator

  1. Enter the sale price of the property you're giving up (relinquished property).
  2. Enter your original purchase price (basis) in that property.
  3. Enter the price of the replacement property you're acquiring.
  4. Click Calculate to see your realized gain, any taxable boot, the recognized (taxable now) gain, and the gain you're able to defer.
  5. This is a simplified estimate — actual 1031 exchanges involve strict timelines and rules, so consult a qualified intermediary and tax advisor.

Formula

Worked Example

You sell a property for $400,000 (basis $250,000) and buy a replacement for $380,000. Realized Gain = $150,000. Boot = $400,000 − $380,000 = $20,000. Recognized Gain = min($20,000, $150,000) = $20,000 taxable now. Deferred Gain = $150,000 − $20,000 = $130,000 deferred.

Frequently Asked Questions

What is a 1031 exchange?

A 1031 exchange (named after IRS Section 1031) lets a US real estate investor defer capital gains tax by reinvesting the proceeds from a sold property into a new "like-kind" property, instead of cashing out.

What happens if I don't reinvest the full sale amount?

Any cash you keep out of the exchange (called "boot") is taxable in the year of the sale, even if the rest of the transaction qualifies for deferral.

Is this calculator tax or legal advice?

No. It gives a quick estimate of deferred gain based on the numbers you enter. Always confirm the details with a qualified intermediary or tax professional, since 1031 rules have strict timelines and requirements.

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