Using a HELOC to pay off high-interest debt

By King of HELOC Editorial · Reviewed by Luke Orren, Head of Content · Last updated

A HELOC lets you borrow against your home equity at rates typically far below credit-card or car-loan rates, then use those funds to pay off the higher-rate balances. The interest savings can be substantial, but your home secures the debt and discipline is required to avoid running balances back up.

Can a HELOC actually save you money on high-interest debt?

For many homeowners, the answer is yes — but the savings are not automatic. The math depends on the gap between what you currently pay on credit cards or car loans and what a HELOC would charge, and whether you manage the line responsibly after using it.

Credit card rates in the US often run from approximately 20% to 30% APR. Auto loans for borrowers with average credit frequently sit in the 8%–14% range, depending on the lender and loan term. A HELOC, secured by your home equity, is typically offered at rates significantly below either of those benchmarks — often in the 7%–10% range, though your actual rate will depend on your credit profile, your lender, and the broader rate environment at the time you open the line.

That gap is the engine of the strategy. Redirecting the same monthly dollars toward a lower-rate balance means more principal gets retired each month.

How the debt-payoff strategy works step by step

  1. Assess your existing high-rate balances. List every card and loan balance, its current rate, and its minimum payment.
  2. Estimate your available equity. Most lenders allow you to borrow up to 80%–90% of your home’s appraised value, minus your existing mortgage balance.
  3. Open a HELOC for the amount you need. During the draw period — often 10 years — you can take funds as needed and pay interest only on what you use.
  4. Use the draw to pay off your target balances in full. Paying a balance to zero stops the high-rate interest clock immediately.
  5. Direct your former card/loan payments toward the HELOC. Apply that same monthly cash flow to reduce the HELOC balance while the rate is lower.
  6. Close or cut up paid-off cards (or at minimum freeze spending on them) to prevent balances from rebuilding.

Rate comparison at a glance

Debt typeTypical rate rangeSecured by home?
Credit card20%–30% APRNo
Auto loan (average credit)8%–14% APRNo (vehicle)
Personal loan10%–20% APRNo
HELOC7%–10% APR (variable)Yes

Rates shown are illustrative ranges, not guarantees. Your rate will vary based on lender, credit score, loan-to-value ratio, and market conditions.

What makes this strategy work — and what can break it

The discipline requirement

The most common reason this approach fails is not the interest rate — it is behavior. Paying off a credit card with HELOC funds frees up that card’s limit. Without a firm commitment to leave those cards at zero, many homeowners find themselves with both a HELOC balance and rebuilt card balances within 12–18 months. At that point, their total debt is higher, and their home is on the line for part of it.

Before drawing your HELOC, be honest about what created the balances. If it was a one-time event — a medical bill, a job gap, a car repair — and your cash flow is now stable, the strategy has a reasonable foundation. If the balances reflect ongoing spending above your income, address the spending first.

Variable-rate risk

HELOCs almost always carry a variable rate tied to an index like the prime rate. If rates rise after you open the line, your interest payments rise too. Model your repayment assuming rates 2–3 percentage points higher than today to confirm the strategy still makes sense under that scenario.

Closing costs and fees

Some lenders charge origination fees, annual fees, or early-closure penalties on HELOCs. Factor these costs into your break-even calculation before proceeding.

Your home is now the collateral

Credit card debt is unsecured. If you default, your credit score suffers and collectors may pursue you — but your home is not at risk. A HELOC default can lead to foreclosure. This is the most important distinction to internalize before using home equity to retire consumer debt.

Is the interest tax-deductible?

HELOC interest used for debt consolidation is generally not deductible under current IRS rules. The deduction is limited to interest on funds used to buy, build, or substantially improve the home that secures the loan. Always consult a tax professional before assuming a deduction applies to your situation.

When this approach makes the most sense

If those conditions are in place, a HELOC can be one of the more efficient tools a homeowner has for reducing the total cost of high-rate debt. The equity you have built becomes a practical asset rather than an idle number on a statement.

Frequently asked questions

Is it safe to use a HELOC to pay off credit card debt?

It can reduce your interest cost significantly, but you are converting unsecured debt into debt secured by your home. If you miss payments, you risk foreclosure — a consequence credit card debt does not carry. Only do this if you have addressed the spending habits that created the card balances.

Does using a HELOC to consolidate debt hurt my credit score?

Opening a HELOC involves a hard inquiry, which may temporarily lower your score. However, paying off revolving card balances usually reduces your credit utilization ratio, which can improve your score over time.

Is the interest on a HELOC used to pay off debt tax-deductible?

Generally no. The IRS limits the deduction to interest on funds used to buy, build, or substantially improve the home that secures the line. Consult a tax professional for guidance specific to your situation.

What happens to my HELOC payments if interest rates rise?

Most HELOCs carry a variable rate tied to an index such as the prime rate. If rates rise, your draw-period interest payments increase and your eventual repayment obligation grows. Factor that risk into your decision.