The down payment is the constraint that stops most qualified buyers, not the mortgage. A $700,000 property at 25% down needs $175,000 plus closing costs plus a furnishing budget, and that money has to come from somewhere that does not wreck the rest of your balance sheet.
Home equity on a primary residence
A HELOC or home equity loan on a primary residence is the most common source of a first short-term rental down payment, because most high earners have substantial equity sitting idle in a house they already own.
A HELOC is a revolving line, usually at a variable rate, drawn only as needed. That flexibility is genuinely useful during an acquisition, since you can draw for the down payment and the furnishing budget separately and repay as cash flow arrives. The variable rate is the corresponding risk.
A fixed-rate home equity loan trades that flexibility for rate certainty. If you are drawing the full amount at once and have no intention of repaying it quickly, the fixed structure is usually the better fit.
Both structures secure the debt against your primary residence. That is a real risk transfer: a short-term rental that underperforms now threatens the house you live in. Size the draw so that a bad first year is survivable from income alone.
Cash-out refinance
If your existing mortgage rate is above current market, a cash-out refinance can pull equity out and improve the rate at the same time. If your existing rate is well below market, which is true for anyone who financed or refinanced during the low-rate window, a cash-out refinance means giving up that rate on the entire balance to access a fraction of it.
That arithmetic is why HELOCs have been the dominant choice for the last several years. A HELOC leaves a favorable first mortgage untouched and prices only the new money.
The calculation is worth running rather than assuming. The break-even depends on the spread between your current rate and market, the size of the cash-out relative to the balance, and how long you intend to hold.
1031 exchange from an existing property
If the down payment is coming from selling another investment property, a 1031 exchange defers the capital gain rather than realizing it, which leaves substantially more capital available for the next purchase.
The mechanics are unforgiving on timing. You have 45 days from the sale to identify replacement property in writing and 180 days to close. A qualified intermediary must hold the proceeds; touching the money personally disqualifies the exchange.
That 45-day identification window is the practical difficulty, and it is where a done-for-you acquisition process has real value. Finding, underwriting and getting under contract on a genuinely good short-term rental inside 45 days is difficult if you are starting from scratch when the clock begins.
- 45 days to identify replacement property in writing.
- 180 days from sale to close.
- A qualified intermediary must hold proceeds throughout.
- Replacement property must be like-kind investment real estate.
- Debt and equity generally need to be replaced to fully defer.
Partnerships and the refund loop
Partnering splits the down payment and splits the return. It works when the roles are genuinely complementary, typically one partner supplying capital and the other supplying the operating attention. It fails when both partners expected the other to handle the work.
For short-term rental partnerships specifically, the material participation question needs to be settled in advance. The tax benefit that makes these purchases attractive to high earners depends on meeting a participation test, and a passive capital partner may not meet it, which changes the after-tax return for that partner substantially.
The refund loop is the pattern that funds the second property for many of our clients. A cost segregation study on the first property, paired with a short-term rental that meets the seven-day average stay and material participation tests, can generate a first-year deduction large enough to produce a substantial tax refund. That refund becomes the down payment on the next property.
It is not automatic and it is not universal. It depends on your marginal rate, your ability to meet the participation tests, and the specifics of the property. But when it works, it compresses the timeline between the first purchase and the second dramatically.
This page explains how the rules work. It is not tax advice. My BnB Accelerator, LLC is a real estate acquisition firm, not a CPA firm. Work with a qualified professional. Our independent partner firm is AE Tax Advisors.
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Frequently asked questions
Can I use a HELOC for a short-term rental down payment?
Yes, and it is the most common source for a first purchase. The tradeoff is that the debt is secured against your primary residence, so size the draw such that a poor first year for the rental is survivable from income alone.
Should I do a cash-out refinance or a HELOC?
It depends on your existing rate. If your current mortgage is well below market, a cash-out refinance means repricing the whole balance to access part of it, which is usually worse than a HELOC that leaves the first mortgage untouched.
How does a 1031 exchange work for buying a short-term rental?
You have 45 days from selling the relinquished property to identify replacement property in writing and 180 days to close, with a qualified intermediary holding the proceeds. The 45-day window is the practical difficulty, since finding and contracting a good property that fast is hard from a standing start.
Can a tax refund fund the next property?
For some clients, yes. A cost segregation study on a property meeting the seven-day average stay and material participation tests can produce a large first-year deduction and a substantial refund. Whether that happens depends on your marginal rate and your specific facts, so confirm it with your CPA before relying on it.