Forty thousand dollars on credit cards at a 24% APR burns through roughly $800 a month in interest before a single dollar touches the principal. That number is usually what pushes a homeowner to look at the equity in their house and ask whether it can be put to better use.
A cash-out refinance can retire that debt in one transaction. It can also stretch a two-year problem into a thirty-year one and attach it to the roof over your head. Which of those happens comes down to a handful of numbers that most people never actually sit down and calculate.
How the transaction works, mechanically
You replace your current mortgage with a larger one. The old loan gets paid off, the new loan closes, and the difference lands in your bank account a few days later. That cash is yours to spend, and the lender does not police what you do with it.
Here’s a real shape for it. Say the house appraises at $340,000 and you owe $198,000 at 4.1%. A lender allowing 80% loan-to-value will lend up to $272,000. Subtract the $198,000 payoff and you have $74,000 available before costs. Closing costs on a loan that size typically run 2% to 3%, so figure $5,500 to $8,000 comes off the top. Net cash in hand: somewhere around $66,000. Enough to clear the cards, a car note, and still leave a cushion.
The comparison people get wrong
Card debt at 24% versus a mortgage at 6.75% looks like an obvious win. It usually is, on the rate alone. But the rate is only half the equation, and the other half is how long you’ll be paying it.
$40,000 of card debt at 24% paid over five years costs about $1,150 a month. The same $40,000 folded into a 30-year mortgage at 6.75% costs roughly $260 a month. The monthly relief is enormous and real. Total interest on the mortgage version, though, comes to about $51,000 over three decades instead of $29,000 over five years.
That’s not an argument against doing it. It’s an argument for doing it with a plan to pay the new balance down faster than the amortization schedule suggests. A refinance debt consolidation calculator will show you both the payment drop and the lifetime cost side by side, and the gap between those two figures is where the honest decision lives.
Run the break-even, not the monthly payment
Closing costs are the entry fee. Divide them by the monthly savings to see how many months it takes to get your money back. If you’re saving $600 a month and paying $7,000 in costs, the break-even is just under a year. If you’re saving $90 a month, it’s six and a half years, and you should probably leave the paperwork in the drawer.
The trap: repricing a cheap mortgage
Anyone who refinanced in 2020 or 2021 is sitting on a rate in the low threes. Rolling a 3.1% mortgage into a 6.8% loan reprices every dollar of the existing balance, not just the new cash.
On a $300,000 balance, moving from 3.1% to 6.8% adds about $640 a month in interest on money you already owed. If consolidating $30,000 of card debt saves you $600 a month, you’ve effectively gone sideways, and you’ve handed the lender a fresh set of closing costs for the privilege.
In that situation a home equity loan or HELOC, which sits behind the first mortgage and leaves it untouched, is usually the better instrument.
What it actually costs
- Closing costs: 2% to 6% of the new loan amount, covering origination, appraisal, title, and recording.
- VA funding fee: 2.15% for most first-time VA users, higher on subsequent use, waived for borrowers with a service-connected disability.
- Mortgage insurance: required on FHA cash-out loans and on conventional loans above 80% LTV.
- Lost interest deduction: mortgage interest is generally only deductible when the money bought, built, or improved the home. Interest on the portion spent clearing credit cards usually isn’t.
- Foreclosure exposure: the debt is now secured. Miss enough payments and the house is the collateral, which was never true of the cards.
Will you actually qualify?
Conventional cash-out loans typically want a 620 credit score and a maximum LTV of 80%, with a six-month seasoning period after purchase. FHA allows scores down to 500 with tighter equity limits. VA cash-out goes to 100% LTV for eligible veterans. Investment properties usually cap at 75% and carry a rate premium.
Credit is the hurdle that stops most people. Lenders price cash-out loans more harshly than rate-and-term refinances, and a 600 score can mean an add-on of a full percentage point or more. If your file is thin or bruised, read what lenders will actually approve for a cash-out refinance with bad credit before you pay for an appraisal.
The second hurdle is debt-to-income ratio. Most lenders cap total DTI at 50% for cash-out, and 43% to 45% is more comfortable. Here’s the wrinkle most people miss: the cards you’re paying off still carry their minimum payments on the application until they’re actually closed. Pull your numbers first with a refinance debt-to-income calculator so you know whether the new payment fits before a lender tells you it doesn’t.
When the strategy holds up
Cash-out refinancing works best in a fairly narrow set of conditions. You’re holding a mortgage rate that’s close to today’s market, so you’re not repricing cheap money. Your equity is deep enough that you stay at or below 80% LTV after the cash comes out. The debt you’re clearing is genuinely high-interest and revolving. And you have a realistic plan to keep those cards at zero, because a consolidation loan followed by a fresh balance is how people end up with a second mortgage and the same card debt eighteen months later.
If any of those pieces is missing, the deal gets worse fast. Someone with a 550 score, for instance, may still qualify, but the rate spread and fees can erase most of the savings, as this breakdown of refinancing with a 550 credit score lays out in detail.
Alternatives worth pricing the same week
A home equity loan gives you a fixed rate and a fixed term without disturbing a low first mortgage. A HELOC is cheaper to open and works well if you’ll clear the balance within a few years, less well once the introductory period ends. A 0% balance transfer can buy 15 to 21 months of interest-free runway if the total debt fits inside the credit limit. A personal loan at 11% is unsecured and leaves the house alone. None of them are universally better. Price two or three in the same week and the comparison becomes obvious instead of theoretical.
Six things to nail down before you sign
Ask for the Loan Estimate on the same day from two lenders. Compare the total closing costs line, not the interest rate alone. A rate that’s 0.25% lower with $4,000 more in fees can take years to repay.
Check whether the lender requires the cards to be closed. Some do, some don’t. Closing them helps your DTI at the margin and hurts your credit score slightly. Know which trade you’re making.
Confirm there’s no prepayment penalty. You want the option to attack that balance aggressively without being fined for it.
Do a hard look at the post-refinance budget. If the new payment leaves you with $200 of slack each month, one unexpected repair puts you back on the cards.
Keep a written payoff schedule. Something as simple as adding $300 a month to the new mortgage payment can cut years and tens of thousands in interest off the back end.
Ask what happens if the appraisal comes in low. A $20,000 shortfall in value can shrink your cash-out by a third, and you’ll have paid for the appraisal either way. Have a fallback number in mind so you’re not making the decision under pressure at the closing table.