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
- Assess your existing high-rate balances. List every card and loan balance, its current rate, and its minimum payment.
- 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.
- 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.
- Use the draw to pay off your target balances in full. Paying a balance to zero stops the high-rate interest clock immediately.
- 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.
- 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 type | Typical rate range | Secured by home? |
|---|---|---|
| Credit card | 20%–30% APR | No |
| Auto loan (average credit) | 8%–14% APR | No (vehicle) |
| Personal loan | 10%–20% APR | No |
| HELOC | 7%–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
- You have significant equity in your home (typically at least 20% remaining after the draw).
- Your card or loan balances are large enough that the rate savings justify the setup costs and the added risk.
- Your income is stable and you can realistically repay the HELOC balance within a defined timeframe.
- You have a credible plan — and the discipline — to keep paid-off cards at zero.
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.