How to Use a HELOC Down Payment on a Short-Term Rental

The Quick Read: Open a home equity line on property you already own, draw the cash, and bring it to the purchase as the down payment. A DSCR lender then reviews the rental separately, so you need two approvals, and the purchase lender decides whether borrowed money counts.

• The HELOC lender underwrites you: equity, credit, and combined loan-to-value.
• The DSCR lender underwrites the rental: coverage, leverage cap, credit floor, and reserves.
• Many programs limit or condition borrowed down payment funds. Ask before you draw.
• The HELOC payment sits outside the DSCR ratio but still comes out of your cash.
• Short-term rental income swings by season, which makes two payments riskier.

Some investors draw the line first and ask the purchase lender second. This guide walks through the order that keeps the file clean.

What Is a HELOC Down Payment on a Short-Term Rental?

A HELOC is a revolving line secured by property you own. You draw against it during a set period, then repay. The CFPB’s HELOC brochure explains that some plans allow interest-only payments during the draw period, a repayment period follows (often ten or 15 years), and variable pricing means payments can change even if you draw nothing more.

The line puts no limit on how you spend the money. The limit comes from the lender buying the rental. A HELOC cannot buy the property alone. It supplies cash. A separate loan, usually a DSCR loan, finances the purchase.

DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. The lender qualifies the file primarily on property-level rental income covering the payment, subject to lender guidelines. Lendmire’s complete DSCR loans guide covers that framework in full.

Which Property Can Secure the Line?

Collateral must be something you already own. You cannot open a HELOC on the rental you haven’t bought yet.

On Lendmire’s wholesale network, the ceiling depends on occupancy. An investment-property line tops out at 70% CLTV and a $500,000 maximum line, with a 700 minimum credit score. Primary-residence and second-home lines reach higher, up to 90% CLTV, but only at a 720-or-better credit profile. State the ceiling for the property that actually secures the line. Don’t borrow the primary-home number for a rental.

Other rules matter here too. Title must sit with an individual or a revocable living trust. An LLC cannot hold title on the line, which is a real difference from a DSCR loan. These lines are available only in Lendmire’s 16 full-service states, a smaller footprint than the 41-market DSCR platform. Everything is subject to lender guidelines and full file review.

How Underwriting Treats the Two Loans, Step by Step

Here is the sequence that works.

1. Check equity and credit first. Combined loan-to-value sets the line size. On an investment-property line the program ceiling is 70% CLTV. On a primary residence, higher tiers exist at 720 and above. Debt-to-income runs up to 50%, and it is calculated on the interest-only payment at the maximum draw.

2. Ask the purchase lender how borrowed funds are treated. This is the step most files skip. Across the network, treatment tends to fall into three groups. Some programs accept documented line proceeds. Some cap the borrowed share and want part of the money to be your own seasoned cash. Strict programs require an unborrowed down payment. There is no single rule across non-QM lenders, so get the answer for the specific program before you draw.

3. Open the line and draw. At least 75% of the line is drawn at closing on these programs, so plan the payment on that balance from day one. Pricing floats and never converts to fixed.

4. Build the paper trail. Keep the HELOC closing documents, the draw confirmation, bank statements showing the cash landing, and a credit report showing the new liability. The lender wants a clean path from the line to your account to escrow.

5. Underwrite the short-term rental income. This is the second test, covered below.

6. Confirm reserves separately. Borrowed money may count toward the down payment but not toward reserves. Don’t assume HELOC proceeds can do both jobs.

7. Close the purchase. The DSCR lender compares rent to the property’s own principal, interest, taxes, insurance, and any HOA dues.

How Is the Short-Term Rental Income Underwritten?

The rental has to carry itself. The typical evidence is a 12-month platform history, a market projection from a data tool, or an appraiser’s short-term rental analysis. On Lendmire’s network, short-term rental purchases run up to 75% LTV, with a 640 or better score and about 12 months of hosting history expected. Refinances run around 70%, and cash-outs 70%. Coverage starts at 1.00 on purchases and refinances. Those are select-program floors, and stronger coverage opens better leverage and terms. Some select lenders go below 1.00 with leverage and terms adjusted. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.

Appraisal is where files wobble. HousingWire reports that the standard rent schedule form was built for long-term rent and fits short-term income poorly, and it suggests a narrative addendum. Class Valuation makes the same point and notes that non-QM lending is not bound by agency eligibility rules.

Two practical consequences follow. Projected platform income and appraised income are not always the same number, and the underwriter uses the lender-determined figure. If a long-term rent schedule is the fallback, qualifying income can come in lower than your booking data suggests. Run your coverage on the conservative number.

Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income.

Where the HELOC Payment Shows Up

Does the HELOC payment count against the DSCR? Generally no. The ratio compares rent to the rental’s own housing payment, and a line secured by another property sits outside it. A conventional file would instead add that debt to a DTI test.

That does not make the payment free. It is a real monthly cost paid from your pocket and from rental cash flow. Clearing 1.00 is also not the same as positive cash flow. Repairs, vacancy, management, utilities, and capex all sit outside the calculation.

Picture a rental that clears 1.2x on appraised short-term income. The coverage looks healthy. Now add the interest-only HELOC payment on a mostly drawn line, and cut bookings by a quarter in the slow season. The property can still clear the purchase loan’s coverage while the combined obligations run you short. Stress-test three cases: base bookings, soft bookings, and a higher cost on the line. If you only survive the base case, the structure is too thin.

Structures and Variations

The line itself comes in two draw structures on primary residences and second homes: a 3-year interest-only draw with a 17-year repayment, or a 5-year draw with a 25-year repayment. Investment lines run the 5-year draw and 25-year repayment structure only. The CFPB brochure describes the shift when the draw ends. Payments move from interest-only to amortizing, which is a real step up. Plan for it at the start.

Lines can sit in first or second lien position, run from $25,000 to $750,000 (a line above $500,000 is primary-residence only and needs a full appraisal), and carry a $1,000 minimum for later draws in most states. A borrower can hold up to three lines.

On the purchase side, most DSCR files land at 75%-80% LTV, and select programs reach 85% LTV with roughly a 700+ score. Short-term rental purchases cap at 75%. A larger down payment lowers the monthly payment and can lift coverage. It never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.

Where the General Rule Breaks

A 100% borrowed down payment. Programs that require some of your own funds can reject the file on that point alone, even with strong rent.

Reserves. Reserves vary by lender, leverage, loan size, and transaction type, commonly around 6 months of PITIA. Drawing the whole line for the down payment and leaving nothing behind is a classic failure.

Seasonal markets. Vacation-driven markets tend to see tighter coverage thresholds or lower leverage. Slow months pressure a variable payment.

Entity ownership. The rental can often be vested in an LLC under a DSCR program, subject to lender program eligibility. The HELOC cannot. If a property is already deeded to an LLC, it needs a vesting change before it can secure a line.

Ineligible property types. Manufactured homes, log homes, and barndominiums are not offered in the network’s DSCR programs. Condotels and co-ops are also ineligible for the HELOC.

Timing on listings. In some states, a property listed for sale within the past 60 days is ineligible for the line.

Why Doesn’t a Big HELOC Make This Simple?

Because the risk stacks. Total leverage can approach the full price when a purchase loan and a line sit together. Investor discussions show the common plan: use the line as short-term capital, then cash-out refinance the rental to repay it. That plan depends on the property performing, appraising, and meeting cash-out leverage tests later. Cash-outs on standard rentals top out around 75% LTV, with about 6 months of seasoning expected. On short-term rental collateral the cash-out ceiling is 70%. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.

Nasdaq’s HELOC explainer notes that missed payments can put the primary residence at risk of foreclosure. Only use this strategy if the rental can cover both debts, you have cash outside the line, and you accept the risk to the collateral home.

When a HELOC Is the Wrong Tool

• The purchase lender won’t accept borrowed down payment funds.
• Your credit sits below the line’s floor for the collateral you have.
• Cash flow only works in your best booking season.
• You would draw the entire line and hold no reserves.
• Your equity sits in an LLC-titled property.

In those cases, a cash-out refinance on an existing rental or a larger cash contribution fits better. Lendmire’s piece Short-Term Rental DSCR Down Payment Rules on a Purchase vs Cash-Out walks through that comparison.

Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.

Key Terms Defined

HELOC: A revolving line of credit secured by property you own.

CLTV: Combined loan-to-value, which adds every loan on the property and divides by its value.

Draw period: The stretch when you can borrow from the line, often with interest-only payments.

DSCR: Debt service coverage ratio, the property’s rent divided by its monthly housing payment.

Seasoning: How long funds or ownership must exist before a lender counts them.

Reserves: Liquid funds held after closing, measured in months of payments.

What the Decision Looks Like in Practice

Work backward from the purchase. Get the DSCR program’s rule on borrowed funds in writing. Confirm the leverage and coverage for short-term rental collateral. Then size the line to cover only the gap your own cash can’t fill, and keep reserves outside it. If you want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals. Reach the team at 828-256-2183 or request a quote through the quote page. Any calculator on this site is an illustrative estimate only, and nothing here is a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage broker. Home equity lines of credit — on a primary residence, a second home or an investment property — are arranged through wholesale lenders in Lendmire’s 16 full-service states, and every line is underwritten by the lender under its program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB HELOC brochure (print)

2. HousingWire: Short-term rentals are breaking the appraisal playbook

3. Class Valuation: Appraisal Form 1007 and short-term rentals

4. Nasdaq: How to use a HELOC for a down payment