Using a HELOC to Pay Off Credit Cards: The Math and the Foreclosure Catch

On paper, this is the easiest arbitrage in personal finance. Credit cards have been averaging north of 22% APR as of mid-2026, while home equity lines of credit have typically run somewhere around 9% — roughly 13 points cheaper, on the same dollar of debt. Move $30,000 from cards to a HELOC and the interest math swings five figures in your favor over a five-year payoff. Banks will happily show you that math; it's the whole pitch.

What the pitch soft-pedals is what you're actually trading. Credit card debt is unsecured: if everything goes wrong — job loss, illness, divorce — the worst case is collections, a lawsuit, maybe a judgment, and it's dischargeable in bankruptcy. HELOC debt is a lien on your house. Same dollars, radically different worst case: default on a HELOC and the lender's remedy is foreclosure.

So this is not a "should you" article with a clean answer. It's the honest version of both columns: the genuine five-figure savings, and the three ways this specific move loses people their homes. Both halves are the article.

How a HELOC actually works (and the fixed-rate alternative)

A HELOC is a revolving credit line secured by your home equity. Typical structure: a draw period of about 10 years, when you can borrow, repay, and re-borrow — often with interest-only minimum payments — followed by a repayment period of roughly 10–20 years, when the line closes and you amortize what's left. Rates are usually variable, priced off the prime rate plus a margin, so your rate moves when the Fed moves.

Qualifying typically means keeping your combined loan-to-value (your mortgage plus the HELOC, divided by the home's value) under roughly 80–85%, with credit scores of about 620–680 as a common floor and the best pricing well above that. Expect closing costs anywhere from near-zero (often with a clawback if you close the line early) to a few percent, plus possible annual or inactivity fees.

The sibling product, a home-equity loan, is a fixed-rate, fixed-term lump sum. For a one-time debt payoff, it's often the better-shaped tool: you don't need a reusable line, and a fixed rate removes the variable-rate risk entirely — usually at a slightly higher starting rate than a HELOC. If the flexibility of a line is what attracts you, notice that flexibility is exactly the feature that enables the failure mode in the second half of this article.

Two payoff-specific warnings on the structure itself. First, interest-only minimums during the draw period are a trap for this use case — pay only the minimum for ten years and you'll owe the same $30,000 the day repayment starts, having spent a decade renting your own debt. Set your own amortizing payment from day one. Second, HELOC interest is generally not tax-deductible when the money pays off credit cards (the post-2017 rules tie the deduction to buying, building, or substantially improving the home), so don't let anyone pad the pitch with a tax break you won't get.

The math: $30,000 of cards versus a 9% HELOC

Take $30,000 of card debt at roughly 24% APR (a realistic blended rate once penalty pricing and cash advances are in the mix), and compare paying it off over five years in place versus moving it to a HELOC at roughly 9% — self-imposing the same five-year amortization rather than coasting on interest-only minimums:

| | Cards at ~24% | HELOC at ~9% | |---|---|---| | Balance | $30,000 | $30,000 | | Monthly payment (5-year payoff) | ~$863 | ~$623 | | Total paid over 60 months | ~$51,780 | ~$37,380 | | Total interest | ~$21,780 | ~$7,380 | | Interest saved | | ~$14,400 |

Subtract, say, $500–$1,500 in closing costs and annual fees and the honest net is still in the neighborhood of $13,000–$14,000 — plus a payment that drops by about $240 a month. You can pocket the payment relief, or better, keep paying the full $863 against the HELOC and be done in roughly three and a half years instead of five. The math is real. That's precisely why the next section deserves equal weight.

The catch: you're converting the safest kind of debt into the most dangerous

Unsecured to secured is a one-way door. Card debt is legally weak debt — collectors can call and sue, but nobody forecloses over a Visa balance, and in a true catastrophe it's dischargeable in bankruptcy. The moment you pay cards with a HELOC, that $30,000 becomes a lien with your house as collateral. You've traded a worst case of "ruined credit and a judgment" for a worst case of "the lender sells your home." The 13-point rate discount isn't generosity; it's the price of the collateral you just posted. If your income is shaky — variable commissions, an industry doing layoffs, health issues — the discount is not worth the door you're walking through.

Variable rates cut both ways. A HELOC priced around 9% today is priced off prime. If rates climb three points over your payoff window, your ~$623 payment drifts toward $670 and your interest savings shrink. That risk is manageable inside a 5-year self-imposed payoff — and is exactly why a fixed home-equity loan (or a fixed-rate lock option many HELOCs offer on drawn balances) deserves a look. Compare against current consolidation loan rates before assuming the HELOC wins.

And the one that actually loses houses: the freed-up cards. Pay off $30,000 of cards and you now hold $30,000 of open, zeroed credit lines. Statistically, a large share of people who consolidate run the cards back up — the debt didn't have a rate problem, it had a spending-exceeds-income problem, and the consolidation treated the symptom. Two years later that person owes the HELOC and a rebuilt $15,000–$20,000 of card debt, on a budget that couldn't handle the original balance. Now the overload is attached to the house. If you can't say precisely why the balance existed and what changed, you're not ready for this move — close or freeze the cards the week the HELOC pays them, keep one for utility with the limit slashed, and fix the underlying cash flow with a real payoff plan first.

When the worse rate is the better trade

A personal consolidation loan at 12–15% looks inferior next to a 9% HELOC — until you price the collateral. On the $30,000 example, a 5-year personal loan at 13% costs roughly $11,000 in interest: about $3,600 more than the HELOC, in exchange for keeping the debt unsecured, the rate fixed, and your house out of it. For anyone with unstable income, that's cheap insurance. A debt management plan through a nonprofit credit counselor — negotiated card rates often in the mid-to-high single digits, no new borrowing, cards closed as part of the deal — can beat both while structurally preventing the run-it-back-up failure. And if you're far enough underwater that settlement is on the table, read consolidation versus settlement before pledging collateral against debt you might otherwise have negotiated down: settling unsecured debt is sometimes possible; settling a lien on your own house is not.

The HELOC wins when all four are true: stable income, a genuinely fixed spending leak (the cause of the debt is identified and closed), equity to spare well under the 80–85% combined LTV ceiling, and the discipline to self-impose an amortizing payment and freeze the cards. Miss any one, and take the smaller, safer win.

The verdict and your next steps

The math is real: roughly $13,000–$14,000 net savings on $30,000 over five years is not marketing fiction. But you buy it by converting dischargeable, unsecured debt into a foreclosure-backed lien, at a variable rate, while re-arming the exact cards that created the problem. The rate spread is the price of your house being on the table. Take the deal only if your income is stable, the spending cause is fixed, and the freed-up cards get frozen the same week — otherwise a personal loan or a DMP at a worse rate is the better trade.

This week:

1. Write down why the card debt exists and what specifically has changed — if you can't, stop here and fix that first.
2. Get real quotes for all three: a HELOC, a fixed home-equity loan, and an unsecured personal loan; compare total 5-year interest plus fees, not monthly payments.
3. If you proceed with equity: set an amortizing payment (ignore the interest-only minimum) and close or freeze all but one paid-off card the day the balances clear.
4. If your income is shaky or the spending leak isn't fixed, get a free consultation with a nonprofit credit counselor about a DMP before signing anything secured.

This article is for general education. Rates cited (~9% HELOCs, 22%+ card APRs, quoted LTV and credit ranges) are typical ranges as of mid-2026 and vary by lender, borrower, and market conditions; no specific lender's pricing is quoted as fact. This is not financial, tax, or legal advice — decisions that put your home at risk deserve a conversation with a fiduciary advisor or HUD-approved housing counselor.