Yes, you can use a HELOC to buy a car. Once your line is open and past the mandatory waiting period, you can write a HELOC check at the dealership, use a linked card, or transfer funds to your checking account and pay cash. The lender doesn’t restrict what you spend draw-period money on. Whether you should is a different question, and the honest answer is that a car purchase is one of the weaker uses of home equity: you lose tax deductions you’d otherwise get, you take on a variable rate, and your home rather than the car secures the debt.
How You Actually Pay for the Car
After approval, a HELOC enters a draw period that typically lasts 10 years, during which you can borrow against the line as needed.1Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit Most lenders give you access through checks tied to the line, a linked card, or online transfers.
For a car, the cleanest approach is usually to transfer the purchase amount into your checking account a few days ahead of time and walk into the dealership as a cash buyer. That sidesteps dealer financing entirely and can strengthen your negotiating position. Some lenders require a minimum initial draw when the line opens, anywhere from a few hundred dollars to $10,000 depending on the lender and the size of the credit line, so confirm that figure before you plan around a specific purchase date.
One practical upside of paying this way: because the lender’s lien is recorded against your home, not the vehicle, the car title comes to you free and clear. There’s no bank listed on it, registration is simple, and you can sell the car whenever you want without paying off a car-specific loan first.1Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit
Plan Around the Three-Day Waiting Period
Federal law gives you three business days after signing the HELOC agreement to cancel, and the line isn’t active during that window.2eCFR. 12 CFR 1026.23 – Right of Rescission The right of rescission exists because a HELOC puts your home at risk, and regulators want borrowers to have time to reconsider.1Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit
If you’re closing on a HELOC to fund a specific car purchase, don’t schedule the dealership visit for the same day. Funds simply won’t be available. And the HELOC process from application to accessible money generally takes two to six weeks, depending on how quickly the appraisal comes together, so this is not a way to buy a car this weekend.
The Rate Isn’t Fixed
Most HELOCs carry a variable interest rate that adjusts with a benchmark index, most commonly the prime rate.3Consumer Financial Protection Bureau. What Is a Home Equity Line of Credit (HELOC)? When prime rises, your HELOC rate rises with it, and so does your payment. Traditional auto loans are almost always fixed: the payment on day one is the payment on the last day.
As of early 2026, average HELOC rates and average new-car loan rates are in a similar range, generally in the high-6% to mid-7% area. The starting numbers look comparable. The difference is what happens next. An auto loan rate is locked. A HELOC rate can climb over the years you carry the balance, and federal rules require the lender to disclose the lifetime maximum the rate can reach.4eCFR. 12 CFR 1026.40 – Requirements for Home Equity Plans Read that cap before signing. In a rising-rate stretch, the gap between your starting rate and the ceiling can be substantial.
Some HELOCs let you convert part or all of the balance to a fixed rate, but the fixed rate offered at conversion is usually higher than the variable rate at that moment.
You’ll Lose the Tax Deduction, and You Can’t Claim the New Car One Either
This is the piece most buyers miss. HELOC interest is deductible only when the money is used to buy, build, or substantially improve the home that secures the loan.5Internal Revenue Service. Publication 936, Home Mortgage Interest Deduction Spend the money on a car and none of the interest qualifies, whether or not you itemize.
The vehicle loan interest deduction created for tax years 2025 through 2028 under the One, Big, Beautiful Bill Act allows up to $10,000 per year in deductible interest on qualifying new-car loans.6Internal Revenue Service. One, Big, Beautiful Bill Act: Tax Deductions for Working Americans and Seniors It doesn’t rescue the HELOC buyer. That deduction requires the loan to be secured by a lien on the vehicle itself. A HELOC is secured by your home, so it doesn’t qualify.
The net effect is that financing a new car through a HELOC costs you both deductions: the home mortgage interest deduction (because the money didn’t go into your home) and the new vehicle loan interest deduction (because the debt isn’t secured by the car). Depending on the loan size and your bracket, that can add up to thousands in lost tax savings over the life of the debt.
The Payment Jump When the Draw Period Ends
During the draw period, many HELOCs allow interest-only payments, and that low monthly cost is a big part of the appeal.1Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit It’s also temporary. When the draw period ends, usually after 10 years, you stop being able to borrow and start repaying principal and interest, typically over 10 to 20 years.3Consumer Financial Protection Bureau. What Is a Home Equity Line of Credit (HELOC)? The monthly payment often jumps hard at that transition.
On a $25,000 balance at 9%, interest-only comes out to about $188 a month. Shift to a 10-year repayment on the same balance at the same rate and it becomes roughly $317, close to a 70% increase. If the variable rate has climbed to 11% by then, the payment is about $344. And by that point the car may be a decade old with little value left, while the payments are still coming.
Some lenders let you make principal payments during the draw period. If you’re going to use a HELOC for a car anyway, paying down principal while the vehicle still has value is the sensible way to avoid ending up with big payments on a car worth nothing.
Your Home Is the Collateral, Not the Car
With an auto loan, missing payments can cost you the car. With a HELOC, missing payments can cost you the house.1Federal Trade Commission. Home Equity Loans and Home Equity Lines of Credit That’s true whether the car still runs, has been sold, or was totaled in a crash. The debt survives the vehicle.
Federal rules do provide a floor of protection. A loan servicer generally cannot start foreclosure until you’re more than 120 days behind, and during that window the servicer must evaluate you for loss mitigation options like modification or a repayment plan.7eCFR. 12 CFR 1024.41 – Loss Mitigation Procedures Those protections matter, but they don’t change the underlying structure: a HELOC-financed car ties a depreciating asset to your most valuable one.
When It Might Still Make Sense
A HELOC can be a reasonable way to buy a car when you already have the line open, plan to pay the balance down quickly rather than stretch it across the full draw period, and want to walk into the dealership as a cash buyer. The absence of a lien on the title is a real convenience if you tend to trade or sell cars often.
For a standard new-car purchase you intend to finance over several years, a fixed-rate auto loan is usually the stronger choice: the rate is locked, the deduction under the 2025–2028 rule is available if the loan qualifies, and the worst case for missed payments is losing the car rather than the house.