Can you use a HELOC to buy a car? What to weigh first

You found the right car. Now you need the right way to pay for it. Technically, you can use a home equity line of credit (HELOC) to buy a car. HELOC funds are flexible, and most lenders don’t restrict how you spend them.

A HELOC is a mortgage, however. Using a HELOC for a vehicle means your home secures an asset that could lose value quickly. 

For most buyers, an auto loan is the more straightforward option. Certain situations, like locking in a lower rate or a discount for paying the dealer in cash, could make a HELOC worth considering. Here’s what to weigh before you decide.

Can you use a HELOC to buy a car?

Yes, you could use HELOC funds to buy a car. You can spend HELOC funds on nearly anything, including a vehicle, as long as the lender doesn't prohibit it (and it's legal). 

Most lenders let you transfer funds to a bank account or write checks drawn against your HELOC. The credit line is tied to your home, not to what you buy with the money, and lenders don’t typically monitor individual purchases.

The real question is whether a HELOC is actually the right financing tool for your auto purchase. Most vehicles lose value the moment you drive off the lot—while your HELOC balance stays on the books.

HELOC vs. auto loan for buying a car

The biggest difference between buying a car with an auto loan or a HELOC is collateral, or what backs up the loan: 

• An auto loan uses the vehicle as collateral. If you don't repay, the lender could repossess the vehicle. 

• A HELOC uses your home as collateral. If you don’t repay, you could lose your home.

Rate structures are often different, too. Auto loans usually have a fixed interest rate, which means the payment stays the same from the first month through payoff. 

Most HELOCs carry a variable interest rate, so monthly payments could change over time. While uncommon, fixed-rate HELOCs are available. Achieve Loans offers one that locks your rate for the life of the loan.

The longer repayment window for a HELOC could be tempting, but while it could mean lower monthly payments, it might cost you more. Even with identical interest rates, a longer repayment window means you'll generally pay more in total interest over the life of the loan.

The risks of using a HELOC to buy a car

The collateral difference could be a risk if you're not comfortable putting your home on the line. A HELOC uses your home as the collateral. If you don’t repay the loan, you could lose your home, even though the money went toward a car.

Also consider that cars usually depreciate quickly. The common wisdom is that a vehicle starts losing value the day you drive it off the lot. Your HELOC balance likely won’t shrink at the same pace as your car's value. Over time, you could owe more on the credit line than the car is worth, commonly known as being underwater on your car.

The possibility of being underwater is even riskier when you buy a car with a HELOC, because you typically can’t buy GAP (guaranteed asset protection) insurance. GAP insurance covers the difference between an auto loan balance and the car’s value in the event of a total loss.

Imagine you owe $40,000 on a car that’s now worth $30,000. If you have an auto loan with GAP insurance, the insurance could cover that $10,000 difference if your car is totaled. If you used a HELOC for the purchase, you’d still owe the full $40,000, even though insurance would likely only cover up to $30,000.

Variable rates could also add uncertainty. Most HELOCs carry a variable rate, so your payment and monthly interest costs could rise if interest rates climb. A fixed-rate auto loan doesn’t carry that risk.

For most homeowners, these trade-offs outweigh the potential savings. Consider auto loans first, as this type of loan tends to be the most suitable option for vehicle purchases.

Is HELOC interest tax-deductible when you buy a car?

No, HELOC interest isn’t tax deductible under the mortgage interest rules when the money is used to buy a car. Under IRS rules, home equity interest is deductible only when the borrowed funds buy, build, or substantially improve the home that secures the loan. A car purchase doesn’t qualify.

You may also be giving up a tax deduction by purchasing a car with a HELOC. A federal car loan interest deduction is available for the 2025 to 2028 tax years as part of the One Big Beautiful Bill Act. Qualified borrowers can deduct up to $10,000 of car loan interest per year. The deduction has several qualification requirements and is only available with auto loans, not HELOCs used to buy a car.

This article is for informational purposes and is not tax advice. Consult a tax professional for guidance specific to your situation.

When using a HELOC for a car might make sense

A HELOC could work in certain situations:

• Your HELOC rate is meaningfully lower than available auto loan rates. This depends on your credit profile and the rates you qualify for. Run the numbers on total interest and fees over the life of each loan, not just the monthly payment.

• You plan to pay the balance off quickly. A short, disciplined payoff schedule (think months, not years or decades) reduces total interest and limits your exposure to rate changes.

• You have a fixed-rate HELOC. A fixed rate eliminates the variable-rate risk and could help shift the scales.

Even in these cases, your home still serves as collateral. Factor that in alongside the other risks and total costs when comparing a HELOC to an auto loan.

A fixed-rate HELOC option from Achieve Loans

If a HELOC fits your plan, Achieve Loans offers a fixed-rate HELOC that locks your rate for the life of the loan. Unlike most home equity lines of credit, your rate stays the same even if market rates move.

Talk to a mortgage advisor to find out if you qualify.