Boot and partial 1031 exchanges for Miami investors in 2026

Last updated: July 2026

1031 exchange boot is any value you receive in a like-kind exchange that is not like-kind real property: cash pulled out, or net debt relief when your new loan is smaller than the loan you paid off. Boot matters because it is the trigger for tax. Under IRC Section 1031, gain you would otherwise defer becomes recognized gain to the extent of the boot you receive, and recognized gain is capped at the lesser of your realized gain or the boot received [1]. A partial exchange is simply an exchange in which some boot exists, so you defer part of the gain and pay tax on the rest. To avoid boot entirely, an investor generally has to trade equal or up on both purchase value and debt, and reinvest all of the net equity. This post walks through cash boot, mortgage (debt-relief) boot, the equal-or-up rule, and two worked examples for a Miami investor, one trading up and one trading down. It is general information, not individualized tax advice.

What counts as boot

Boot falls into two common buckets.

Cash boot is money or non-like-kind property you receive in the exchange. If your qualified intermediary hands you leftover proceeds at closing, or you take cash out because the replacement property costs less than what you sold, that cash is boot.

Mortgage boot, also called debt-relief boot, is the net reduction in your liabilities. If the loan you paid off on the property you gave up is larger than the loan you take on the replacement, the difference is treated as boot even though you never touched a dollar of it. You can offset debt-relief boot by adding new cash to the purchase, but reducing debt without replacing it creates boot.

A useful rule to remember: receiving boot triggers gain, but paying boot does not create a loss you can use. A loss on the relinquished property stays deferred even when boot is involved.

How partial exchanges trigger partial gain

The mechanics are set by IRC Section 1031 and reported on IRS Form 8824. Gain is recognized to the extent of the money and other non-like-kind property received, and the Form 8824 instructions direct you to report the smaller of the boot received or the realized gain, but not less than zero [1]. That is the ceiling and the floor in one sentence: you never recognize more than your actual economic gain, and you never recognize less than the boot you pulled out.

So a partial exchange is not a failed exchange. If you sell a Miami rental with a large embedded gain and take some cash out, you defer most of the gain and pay tax on the boot portion. The rest of the deferral stays intact, and your basis in the replacement property carries over and is adjusted for the gain you recognized.

The two deadlines still apply

Boot does not change the timeline. In a delayed exchange you must identify replacement property in writing no later than 45 days after you transfer the property you gave up, and you must receive the replacement by the earlier of 180 days after that transfer or the due date, including extensions, of your return for that year [2]. The 45-day and 180-day clocks start on the same day and run concurrently. Missing either deadline can disqualify the whole exchange, which is a far more expensive outcome than a little boot.

One more foundational point since the 2017 Tax Cuts and Jobs Act: Section 1031 now applies only to exchanges of real property. Personal property such as vehicles, equipment, and collectibles no longer qualifies for like-kind treatment for exchanges completed after December 31, 2017 [3]. For a real estate investor that is rarely a problem, but it is why older 1031 guidance that mentions swapping personal property is out of date.

The equal-or-up rule

To defer 100% of your gain, the working guideline is equal or up on both value and debt, plus full reinvestment of equity:

Value: the replacement property should cost at least as much as the net sale price of the property you gave up.
Debt: the new loan should be at least as large as the loan you retired, or you should replace any shortfall with new out-of-pocket cash.
Equity: all of the net proceeds held by your qualified intermediary should go into the replacement property.

Trade down on value, pull equity out, or reduce debt without adding cash, and you create boot in the amount of the shortfall. That is the entire logic of a partial exchange.

Worked example one: a Miami investor trading up

Assume an investor sells a Brickell condo used as a rental for $800,000. The adjusted basis is $400,000, so the realized gain is roughly $400,000 before selling costs. The old mortgage is $300,000, leaving about $500,000 of net equity with the qualified intermediary.

The investor buys a replacement fourplex for $1,000,000, takes a new $500,000 loan, and puts the full $500,000 of equity toward the purchase. Value is up, from $800,000 to $1,000,000. Debt is up, from $300,000 to $500,000. No cash comes back. There is no boot, so no gain is recognized and the full $400,000 gain is deferred. If you are weighing a trade like this, a current valuation of what you would relinquish is the first input, and you can start with a listing valuation.

Worked example two: a Miami investor trading down

Now assume the same $800,000 sale, $400,000 basis, and $300,000 old mortgage, but the investor buys a smaller replacement condo in Aventura for $650,000 with a new $150,000 loan.

Two kinds of boot can show up here:

Cash boot. The replacement costs $650,000. With a $150,000 loan, the investor needs $500,000 of cash, which happens to match the equity available, so in this version no cash comes back. If instead the investor took a $250,000 loan and only needed $400,000 of the $500,000 equity, the remaining $100,000 would return as cash boot.
Mortgage boot. Debt drops from $300,000 to $150,000, a $150,000 net reduction. Unless the investor adds $150,000 of new cash to offset it, that $150,000 is debt-relief boot.

In the version with $150,000 of unoffset debt relief, recognized gain is the lesser of the $150,000 boot or the $400,000 realized gain, so $150,000 is taxable and $250,000 stays deferred [1]. The exchange still works; it is just partial. Investors weighing a trade-down should model the tax on the boot against the reason for downsizing before committing. If you want to think through acquisition targets, a buyer consultation is a reasonable next step.

Practical notes for Miami investors

Three things tend to matter locally. First, closing costs and prorations paid from exchange funds can create small amounts of boot, so review the settlement statement with your intermediary and tax advisor. Second, condo and short-term-rental properties are still real property for 1031 purposes, but personal property included in a sale, such as furnishings in a turnkey rental, is not like-kind, so allocate value carefully. Third, taxes deferred are not taxes erased; the deferred gain and carryover basis follow you into the next property until a later taxable sale or a step-up event.

None of this replaces advice from a CPA or tax attorney who can run your specific numbers. The point here is to make the vocabulary and the math legible so the conversation with your advisor is faster. You can browse more investor explainers on the blog.

Frequently asked questions

Does taking boot ruin my 1031 exchange?

No. Boot makes the exchange partial. You recognize gain up to the amount of boot received, capped at your realized gain, and defer the rest [1]. The exchange remains valid as long as the identification and receipt deadlines are met.

How is recognized gain calculated when there is boot?

Recognized gain is the smaller of the boot received or the total realized gain, and never less than zero, as reported on IRS Form 8824 [1]. You cannot be taxed on more than your actual economic gain.

Can I offset debt-relief boot?

Yes. Adding new out-of-pocket cash to the replacement purchase can offset a reduction in debt. Cash paid into the deal offsets mortgage boot, though cash you take out is itself boot.

What are the 1031 exchange deadlines?

You must identify replacement property in writing within 45 days of transferring the relinquished property, and receive the replacement within 180 days or by your return due date including extensions, whichever is earlier [2]. The two periods run concurrently from the same start date.

Does 1031 still apply to anything other than real estate?

Not since the 2017 tax law. For exchanges completed after December 31, 2017, Section 1031 applies only to real property; personal and intangible property no longer qualifies [3].

Gabriel

Sources

---

Gabriel A. Moyers, PA. eXp Realty. Florida License #3407280. Equal Housing Opportunity. This article is general information as of July 2026 and is not legal, tax, or financial advice. Verify current figures against authoritative sources before acting.