1031 Exchange Boot and Suspended Losses: Size It to Fit

Take boot up to the size of your losses and the cash comes out with little or no tax on the gain. Go past that line and you pay on the excess. Nobody sizes the 1031 or the Delaware statutory trust to fit your stuck losses. That is the whole idea, and it starts with one number: the carryforward on your Form 8582.

An example, from the engine

A couple sells a $3,000,000 building with a $900,000 basis. They hold $1,000,000 of stuck losses and $150,000 of other income.

• Take $1,000,000 of boot over 10 years. The boot gain is covered by the losses, and their total tax bill goes down by $107,250. The same cash with no losses would cost $150,000.
• Take $500,000 of boot in one year. Inside the losses, the tax bill goes down by $12,505. With no losses, the same cash costs $90,405.
• Take $700,000 of boot when you hold $300,000 of losses. The boot is past the sweet spot. Only $300,000 is covered, and the tax bill goes up by $58,895. Without any losses it would be $138,005.

Spreading the boot over years matters because new losses soak up each year's slice too. The book version of this: a partial 1031 plus $600,000 of structured boot paid over three years used all $750,000 of stuck losses by year 4, and the $600,000 came out with no federal tax on that gain, which would otherwise have cost about $172,800. The price is that $600,000 less stays invested and deferred.

What boot is

Boot is everything you receive that is not like-kind property. You recognize the lesser of your realized gain or the net boot you received. Cash taken at closing is boot. So is debt you pay off and do not replace, and that kind cannot be spread over years. Only cash boot can go on a schedule (§453(f)(6)).

Why a 1031 alone frees nothing

A 1031 is not a sale in which all the gain is recognized, so the old building's losses stay on Form 8582 (§469(g)(1)(A)). The official 1986 explanation of the law says an exchange "does not trigger suspended losses," and that boot gain "is treated as passive activity income, against which passive losses may be deducted."

Who this helps, including the broker

Sizing the boot does not cancel the exchange. The client still buys a replacement, so the purchase side of the deal stays. What changes is that the cash-out slice stops costing them tax. I size the plan. A securities professional places any Delaware statutory trust.

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When this does not fit

• You do not need money out in the next few years. Do the full 1031 and keep the deferral.
• The boot is small. Roughly $100,000 to $150,000 of gain or less, just pay it. Ask your CPA to price that simply.
• You hold no stuck losses. Then boot is just a cost.
• The sale is a related-party deal. Different rules apply. Ask before you plan around it.

Bring your Form 8582 balance and the sale price to the call.

Frequently asked

Q: Can suspended passive losses offset 1031 exchange boot? A: Yes. A 1031 exchange does not release suspended losses, but recognized boot is passive income, so the losses from that activity can be deducted against it.

Q: How much boot should I take? A: About the size of your stuck losses, capped at your realized gain. Past that line the extra boot is taxed. Spreading it over years lets new losses soak up each slice.

Q: Does taking boot free my suspended losses? A: Only as boot gain uses them. The exchange itself frees none. Whatever the boot does not use stays suspended until a later fully taxable sale.

Q: Can I spread 1031 boot over several years? A: Cash boot can be paid on an installment schedule (§453(f)(6)). Debt relief that is not replaced counts in year one and cannot be spread.

Q: What if I do not know my suspended loss number? A: It is on your most recent Form 8582, Part VII, column (c). California keeps a separate carryforward on FTB 3801.

Law as of October 30, 2026. Every figure is an estimate from 2026 federal and California tables, not tax, legal or financial advice. Ask your CPA to confirm against your own Form 8582.