Many investors assume a 1031 exchange is all-or-nothing — either you reinvest everything and defer the whole gain, or you sell and pay tax on all of it. In fact, there's a middle path: the partial exchange, where you reinvest most of your proceeds tax-deferred and intentionally keep some cash, paying tax only on the portion you take. This flexibility is genuinely useful — it lets you free up cash for a specific need while still deferring the bulk of your gain. The key is to do it deliberately, understanding that the cash you keep (and any debt you don't replace) is taxable 'boot.' Done knowingly, a partial exchange is a practical tool; done accidentally, the boot is just unnecessary tax. This guide explains how partial exchanges work, when they make sense, and how to plan one so the taxable amount is exactly what you intend.
What is a partial exchange?
A partial 1031 exchange is one where you don't reinvest all of your proceeds (or replace all of your debt) into the replacement property, so part of your gain is deferred and part is recognized and taxed. The exchange still works for the portion you reinvest — that gain is deferred just as in a full exchange — but the portion you keep as cash, or the debt you fail to replace, is taxable. It's a hybrid: a tax-deferred exchange for most of the transaction and a taxable sale for the remainder.
The mechanism is the same as any 1031 — you use a qualified intermediary, identify replacement property, and meet the deadlines — but instead of directing all the proceeds into the replacement, you take some out. The amount you take is 'boot,' a term meaning cash or non-like-kind value received in an exchange. Boot is taxable up to the amount of your gain, so taking cash out of an exchange triggers tax on that cash (to the extent of your gain) while the rest stays deferred.
The appeal of the partial exchange is its flexibility. You're not forced to choose between deferring everything and deferring nothing. If you want to keep some cash — to fund a need, reduce your real estate exposure, or for any reason — you can, while still deferring the gain on the majority of your proceeds. The trade-off is simply that the cash you keep is taxed. Understanding and planning that trade-off is what turns the partial exchange from a trap into a tool.
How cash-out creates taxable boot
The most direct way to create boot is to take cash out of the exchange — to have some of your sale proceeds come to you rather than being reinvested into the replacement. This 'cash boot' is taxable up to the amount of your gain. If you sell a property and direct, say, $100,000 of the proceeds to yourself while reinvesting the rest, that $100,000 is recognized gain (assuming your total gain is at least that much) and is taxed, while the reinvested portion stays deferred.
Cash boot can arise deliberately — you choose to keep some proceeds — or accidentally, which is where investors get hurt. Accidental boot happens when proceeds inadvertently reach you, when you reinvest into a cheaper replacement than what you sold (the value shortfall is boot), or when you don't reinvest all your equity. The lesson is that to fully defer, you must reinvest all your equity into equal-or-greater-value property; any equity you don't reinvest becomes cash boot. A partial exchange simply makes this intentional.
An important nuance is the ordering of what gets taxed. When boot triggers recognition, the gain recognized can include recaptured depreciation, which is taxed at less favorable rates than long-term capital gain. So the tax on boot isn't always at the lowest rate — part of it may be ordinary-income recapture, depending on your property's history. This is why even a deliberate cash-out should be modeled with your CPA: the same dollar of boot can carry different tax depending on how much of your gain is recapture versus capital gain. Knowing the actual tax on the cash you take is essential to planning the partial exchange.
Cash you keep, value you don't replace, and debt you don't match are all boot — taxable up to your gain. A partial exchange just makes that trade-off intentional.
How reducing debt creates boot too
Cash isn't the only source of boot — debt matters too, and it's the source investors most often overlook. If your relinquished property had a mortgage that gets paid off at sale, that debt relief is treated as if you received cash. To avoid 'mortgage boot,' you must replace that debt on the replacement property — by taking on new debt of at least the same amount, or by adding equivalent cash out of pocket. If your replacement carries less debt than you paid off, the shortfall is mortgage boot and is taxable.
This means a partial exchange can happen through debt as well as cash. If you sell a property with a $400,000 mortgage and buy a replacement with only a $250,000 loan, you have $150,000 of mortgage boot — unless you contribute $150,000 of additional cash to close the gap. Investors who reduce their leverage in an exchange without realizing it create boot inadvertently, which is one of the most common accidental-partial-exchange traps. Understanding the debt-replacement requirement is essential to controlling boot.
The interaction of cash and debt boot is where the full-deferral math comes together: to defer the entire gain, you must reinvest all your equity AND replace all your debt (or substitute cash for debt). Falling short on either creates boot. In a deliberate partial exchange, you might choose to take cash boot, or to reduce debt (deleverage) and accept the mortgage boot, or some combination — but you should plan which, and how much, with your CPA, because the two sources of boot combine to determine your total taxable amount. Controlling both is what lets you set the deferred-versus-taxed split exactly where you want it.
When a partial exchange makes sense
A partial exchange makes sense whenever you want to keep some cash but still defer the bulk of your gain. The most common reason is a specific cash need — funding a non-real-estate purpose, covering a major expense, paying down other debt, or simply taking some chips off the table — that you'd rather meet from the sale proceeds than by other means. Rather than choosing between a full exchange (no cash) and a full sale (all taxed), the partial exchange lets you take exactly the cash you need while deferring the rest.
Partial exchanges also suit investors who want to reduce their real estate exposure or leverage without exiting entirely. An investor who's overweight real estate might take some cash to diversify into other assets while keeping most of their capital in a deferred exchange. An investor who wants to deleverage might deliberately accept mortgage boot, reducing their debt on the replacement and paying tax on the difference. In both cases, the partial exchange is a tool for rebalancing while preserving most of the deferral.
The decision often comes down to weighing the tax cost of the boot against the value of having the cash. Because boot is taxable (sometimes including ordinary-income recapture), keeping cash through a partial exchange has a real cost — you're paying tax to access that money. Whether that's worthwhile depends on what you need the cash for and the alternatives. For a genuine need that the proceeds best serve, the partial exchange is usually the right tool; if the cash isn't really needed, deferring it all preserves more wealth. Your CPA can quantify the tax cost so you can weigh it against the benefit.
Calculating your deferred vs. taxed portion
Calculating a partial exchange comes down to determining your total boot — cash kept plus unreplaced debt — and applying it against your gain. Your recognized (taxable) gain is the lesser of your total boot or your total realized gain. The rest of your gain is deferred. So if you have $400,000 of total gain and take $100,000 of boot (cash plus debt shortfall), you recognize $100,000 of gain and defer $300,000. If your boot exceeded your gain, you'd recognize the full gain (a partial exchange can't make you recognize more than your actual gain).
The mechanics require tracking several figures with your CPA: your realized gain (sale price minus adjusted basis and selling costs), your cash boot (proceeds not reinvested), and your mortgage boot (debt paid off minus debt replaced, net of any cash added). These combine to determine recognized gain and the resulting tax — which, as noted, may include depreciation recapture at higher rates on part of the recognized amount. The replacement property's basis is also adjusted to reflect the partial nature of the exchange, affecting your future depreciation there.
Because the calculation involves the interplay of cash, debt, gain, and recapture, it's not something to estimate casually — your CPA should model it so you know precisely the tax on any given amount of boot before you decide how much to take. The value of this modeling is control: it lets you dial the cash-out up or down to hit a target — a specific amount of cash, a specific tax cost, or a specific deferred percentage — rather than discovering the tax after the fact. A well-planned partial exchange is one where you knew the exact deferred-versus-taxed split before you closed.
- A partial exchange defers most of your gain while letting you keep some cash, which is taxable boot.
- Boot comes from cash kept, value not reinvested, AND debt not replaced — control all three to set your taxable amount.
- Recognized gain is the lesser of your total boot or your total gain; the rest is deferred (boot can include higher-rate recapture).
- Plan the split deliberately with your CPA so the cash you take and the tax you pay are exactly what you intend.
Planning a partial exchange
Planning a partial exchange well means deciding the cash-out deliberately and in advance, not stumbling into boot. Start by clarifying why you want cash and how much — a specific need translates into a target cash amount. Then work with your CPA to model the tax on that amount, accounting for the cash-and-debt boot interaction and any recapture, so you know the true cost of accessing the cash. With the target and its tax cost known, you can confirm the partial exchange is worthwhile and structure it precisely.
Structurally, a partial exchange runs like any 1031 — qualified intermediary engaged before closing, replacement identified within 45 days, closed within 180 days — with the cash-out built in. You arrange for the intended boot to come to you (and the rest to flow into the replacement) in a way that's clean and intentional, so the taxable amount is exactly your planned figure. The qualified intermediary and your CPA coordinate this so the cash you take and the deferral you keep are both precisely controlled.
The overarching principle is intentionality. The difference between a smart partial exchange and an accidental boot problem is entirely whether it was planned. An investor who decides up front to take a known amount of cash, models the tax, and structures the exchange accordingly gets a useful, controlled outcome. An investor who reinvests carelessly — pulling cash, buying down, or reducing debt without realizing the tax — gets an unwelcome surprise. Planning is what makes the partial exchange a tool rather than a trap, and it's why the cash-out decision belongs in the planning phase with your CPA and advisor, before the exchange is underway.
A worked partial-exchange example
Make it concrete. Suppose you sell a rental for a net sale price of $700,000, with a $300,000 mortgage paid off at closing and an adjusted basis of $250,000 — so your realized gain is $450,000. You want to keep $80,000 of cash for a specific need and exchange the rest. To plan the partial exchange, you and your CPA work out the boot: the $80,000 cash you take is cash boot, and you'll need to address the $300,000 of debt relief on the replacement side.
If you reinvest the remaining $620,000 of equity into a replacement worth at least $620,000 and replace the full $300,000 of debt (so no mortgage boot), your only boot is the $80,000 cash. Your recognized gain is the lesser of total boot ($80,000) or realized gain ($450,000) — so $80,000 is taxed, and $370,000 is deferred. The tax on that $80,000 might include some depreciation recapture at higher rates, which your CPA quantifies, but you've deferred the large majority of the gain while freeing the cash you needed.
Now suppose instead you also reduce the debt — replacing only $200,000 of the $300,000 — to deleverage. That $100,000 debt shortfall is mortgage boot, adding to your $80,000 cash boot for $180,000 of total boot. Your recognized gain rises to $180,000 (still less than the $450,000 gain), with $270,000 deferred. The example shows how cash and debt boot combine to set the taxable amount: by dialing each up or down, you control the deferred-versus-taxed split precisely. The figures are illustrative; your CPA should model your actual numbers, but the structure shows how a planned partial exchange lets you hit an exact target.
How Baker 1031 helps with partial exchanges
Baker 1031 Investments helps investors plan partial exchanges deliberately — clarifying your cash need, coordinating with your CPA to model the tax on the boot (including the cash-and-debt interaction and any recapture), and structuring the exchange so the cash you take and the gain you defer are precisely what you intend. We help you weigh the tax cost of the cash-out against the value of having the cash, so the partial exchange is a controlled tool rather than an accidental tax surprise.
Where the reinvested portion goes into replacement property, we help identify and vet it; securities such as DSTs are offered through the broker-dealer, Aurora Securities, Inc. (member FINRA/SIPC), with any recommendation following a suitability review. Our role is to make sure your partial exchange is planned, not stumbled into — so you free up exactly the cash you need while deferring the maximum of the rest, with no unwelcome boot.
Frequently Asked Questions
What is a partial 1031 exchange?
An exchange where you reinvest most of your proceeds tax-deferred but intentionally keep some cash (or don't replace all your debt), so part of your gain is deferred and part is recognized and taxed. The cash you keep is 'boot,' taxable up to your gain. It's a hybrid — a deferred exchange for most of the transaction and a taxable sale for the remainder.
Can I take cash out of a 1031 exchange?
Yes — that's a partial exchange. You can keep some of your proceeds while reinvesting the rest, but the cash you take is taxable boot (up to your gain). A 1031 isn't all-or-nothing; you can defer most of the gain and pay tax only on the cash you keep. The key is planning the cash-out deliberately so the tax is what you intend.
What is boot?
Cash or non-like-kind value you receive in an exchange — including cash you keep, value you don't reinvest, and debt you don't replace. Boot is taxable up to the amount of your gain. In a partial exchange, the boot is the intentional portion you keep; the rest of the proceeds, fully reinvested, stays deferred.
How does reducing my debt create boot?
If you pay off a mortgage at sale and the replacement carries less debt, the shortfall is 'mortgage boot' — debt relief treated like cash received — and is taxable unless you offset it with additional cash. So you can create boot by deleveraging, not just by keeping cash. To fully defer, replace all your debt (or substitute cash for it).
How much of my gain is taxed in a partial exchange?
Your recognized (taxable) gain is the lesser of your total boot (cash kept plus unreplaced debt) or your total realized gain; the rest is deferred. So $100,000 of boot against $400,000 of gain means $100,000 recognized and $300,000 deferred. Boot can't make you recognize more than your actual gain. Note part of the recognized gain may be higher-rate recapture.
When does a partial exchange make sense?
When you want to keep some cash but still defer the bulk of your gain — to fund a specific need, reduce real estate exposure or leverage, or take some chips off the table. Rather than choosing between a full exchange (no cash) and a full sale (all taxed), a partial exchange lets you take exactly the cash you need while deferring the rest.
Is the tax on boot at the capital gains rate?
Not always entirely. When boot triggers recognition, the recognized gain can include recaptured depreciation, taxed at higher rates than long-term capital gain. So the tax on the cash you take may be partly ordinary-income recapture, depending on your property's depreciation history. This is why a deliberate cash-out should be modeled with your CPA to know the true tax.
How do I calculate my deferred vs. taxed portions?
With your CPA, track your realized gain (sale price minus adjusted basis and selling costs), your cash boot (proceeds not reinvested), and your mortgage boot (debt paid off minus debt replaced, net of cash added). Recognized gain is the lesser of total boot or total gain; the rest defers. The replacement's basis is also adjusted for the partial nature.
Can I accidentally trigger a partial exchange?
Yes — that's the danger. Accidental boot happens when proceeds inadvertently reach you, you reinvest into a cheaper replacement (the value shortfall is boot), or you reduce debt without realizing it. To fully defer, reinvest all equity into equal-or-greater value and replace all debt. Planning prevents accidental partial exchanges and the surprise tax they bring.
How do I plan a partial exchange?
Decide your cash need and target amount, model the tax on that boot with your CPA (accounting for the cash-and-debt interaction and recapture), confirm it's worthwhile, then structure the exchange so the intended boot comes to you and the rest flows into the replacement. The qualified intermediary and CPA coordinate this so the cash and the deferral are both precisely controlled.
Is keeping cash through a partial exchange worth the tax?
It depends on what you need the cash for. Because boot is taxable (sometimes at higher recapture rates), accessing cash this way has a real cost. For a genuine need the proceeds best serve, it's usually worthwhile; if the cash isn't really needed, deferring it all preserves more wealth. Your CPA can quantify the tax so you can weigh it against the benefit.
Does a partial exchange affect my replacement property's basis?
Yes. The replacement's basis is adjusted to reflect the partial nature of the exchange — generally your carryover basis plus any additional investment, affected by the boot taken. This in turn affects your future depreciation on the replacement. Your CPA computes the adjusted basis as part of reporting the partial exchange on Form 8824.
Can I take cash and also keep debt low in the same exchange?
Yes — and both create boot that combines. Cash you keep is cash boot, and debt you don't replace is mortgage boot; they add together to determine your recognized gain (up to your total gain). By dialing each up or down with your CPA, you control the deferred-versus-taxed split precisely. Just plan both deliberately so the total taxable amount is what you intend.
Is there a limit on how much boot I can take?
No statutory limit — you can take any amount of boot, up to and including all your proceeds (which would be a fully taxable sale). But your recognized gain is capped at your actual realized gain; boot beyond your gain doesn't create additional taxable gain. The practical limit is your own plan: take only the cash you need, since each dollar of boot is taxed.
Will I still owe tax if my boot is less than my selling costs?
Selling costs reduce your realized gain and can offset some boot, but the interaction is specific to your numbers. Generally, recognized gain is the lesser of net boot or realized gain, and selling costs factor into both. Your CPA computes the exact figures, so don't assume costs eliminate the tax on boot — model it to know the real recognized amount.
Should I take cash now or do a full exchange and refinance later?
It's worth comparing. Taking cash via a partial exchange is taxable boot now, whereas completing a full exchange and later refinancing the replacement can pull out cash tax-free (a loan isn't taxable), preserving the full deferral. Refinancing has its own costs and risks, but for accessing cash without triggering tax it's often preferable. Discuss both with your CPA and advisor.
Glossary
- Partial Exchange
- A 1031 where part of the gain is deferred and part is recognized because not all proceeds or debt are reinvested/replaced.
- Boot
- Cash or non-like-kind value received in an exchange; taxable up to the amount of gain.
- Cash Boot
- Sale proceeds the exchanger keeps rather than reinvesting; taxable.
- Mortgage Boot
- Taxable gain from replacing less debt than was paid off, unless offset with cash.
- Realized Gain
- Total gain on the sale — proceeds minus adjusted basis and selling costs.
- Recognized Gain
- The portion of gain actually taxed — the lesser of total boot or realized gain.
- Deferred Gain
- The portion of gain not recognized, carried forward into the replacement property.
- Depreciation Recapture
- Tax on prior depreciation, at higher rates, which can be part of recognized boot.
- Equal-or-Greater-Value Rule
- The requirement to acquire replacement value at least equal to the net sale price to fully defer.
- Debt Replacement
- Taking on new debt (or adding cash) at least equal to the debt paid off, to avoid mortgage boot.
- Adjusted Basis
- Original cost reduced by depreciation; used to compute realized gain.
- Carryover Basis
- The relinquished property's basis transferred to the replacement, adjusted in a partial exchange.
- Qualified Intermediary (QI)
- The independent party that holds proceeds and coordinates the intended cash-out.
- Form 8824
- The IRS form reporting the exchange, including any boot and the basis calculation.
- Deleveraging
- Reducing debt on the replacement, which creates mortgage boot unless offset with cash.
- Net Sale Price
- Gross sale price minus selling costs; the basis for the equal-or-greater-value target.
Sources & References
- IRS. Like-Kind Exchanges Under IRC Section 1031 (FS-2008-18)
- IRS. Instructions for Form 8824 (Like-Kind Exchanges)
- IRS. Topic No. 409, Capital Gains and Losses
- Cornell Legal Information Institute. 26 U.S. Code § 1031
Disclosures
This article is published by Baker 1031 Investments, LLC for general educational purposes for accredited investors and is not an offer to sell or a solicitation of an offer to buy any security, nor is it tax, legal, accounting, or investment advice or a recommendation. Any securities offering is made solely through a sponsor’s private placement memorandum (PPM) following a suitability determination. Securities offered through Aurora Securities, Inc. (ASI), member FINRA / SIPC; Baker 1031 Investments is independent of ASI.
Oil & gas mineral and royalty interests and DST programs are speculative, illiquid securities sold only to verified accredited investors and involve substantial risk, including possible loss of principal, commodity-price and production-decline risk, lack of control, and the risk that an intended 1031 exchange fails to qualify for tax deferral. Whether a particular interest qualifies as like-kind real property is a fact-specific legal determination that varies by state and by the terms of the instrument. Tax results depend on your individual circumstances. Consult your own CPA and attorney before acting. Past performance does not guarantee future results.
