Should I Refinance My Low-Rate Mortgage to Pay Off Debt?
Sometimes, yes, even if your current mortgage rate is low. What matters is the total cost of all your debt, not just the rate on your mortgage. If you're carrying credit card balances, car loans or personal loans at much higher rates, using your home equity to pay them off may lower your total monthly payments and the interest you pay overall. But it isn't right for everyone, and there are two very different ways to do it: keep your current mortgage and add a HELOC or home equity loan, or replace your mortgage with a cash-out refinance.
I'm Paul Mattos, a mortgage broker with Refine Mortgage, licensed in North Carolina and South Carolina. A lot of homeowners I talk with have a great rate on their mortgage and a lot of equity, but their other debts have gotten expensive. Here's how I help them decide whether to use that equity, and how.
Why Your Mortgage Rate Isn't the Whole Picture
Many homeowners won't consider touching a low mortgage rate, and that makes sense. But your mortgage is usually only one of the debts you're paying each month.
According to the Federal Reserve, the average bank credit card rate was about 21% in August 2026, and about 22% on accounts that were charged interest. Personal loans averaged close to 12%, and new car loans more than 7%. When you add those debts to a low-rate mortgage, the average rate you're paying on everything you owe can be a lot higher than your mortgage rate alone.
That's the number to compare. Lenders call it a blended rate: the average of all your debt rates, weighted by how much you owe on each one.
Option 1: Keep Your Mortgage and Add a HELOC or Home Equity Loan
This option lets you keep your low first mortgage rate and borrow against your equity with a second loan.
HELOC: a credit line you draw from as needed. Rates are usually variable, and many have interest-only payments during the draw period, so the payment usually rises later.
Home equity loan: one lump sum with a fixed rate and a fixed payment.
This may fit when:
Your current mortgage rate is much lower than today's rates
The debt you want to pay off is a smaller share of what you owe compared with your mortgage
You want to pay the new loan off fairly quickly
Learn more on my HELOC page, which also has online application options.
Option 2: A Cash-Out Refinance
A cash-out refinance replaces your current mortgage with a new, larger one. The extra money pays off your other debts, often directly at closing, and you're left with one mortgage payment instead of several.
This may fit when:
Your other debts are large compared with your mortgage balance
You want one fixed payment and a single loan
Your current rate isn't far from today's rates
You also want to remove mortgage insurance or change your loan term
The trade-off is that your new rate applies to the whole balance, including the part that used to be at your old rate, and you'll pay closing costs on the full loan. See cash-out refinance explained.
HELOC vs. Cash-Out Refinance: How I Compare Them
I don't think there's one right answer. When a client asks me about paying off debt, I run both options side by side and show:
What you're paying now across all your debts each month
Your blended rate today
Your total monthly payments and blended rate with a HELOC or home equity loan
Your total monthly payments and rate with a cash-out refinance
The closing costs for each option
How long each option would take to pay off, and the total interest along the way
If you'd rather keep your mortgage and do a HELOC, that's a perfectly good choice. My job is to show you the trade-offs. For more, see HELOC vs. cash-out refinance.
The Part Most People Skip: What You Do With the Savings
If paying off your debts lowers your total monthly payments, you have a choice about that money.
You can keep it in your budget. Or you can put some or all of it toward the principal on your mortgage or HELOC each month. Because extra principal payments lower the balance that interest is charged on, doing this consistently can pay your home off years sooner than your scheduled term, and lower the total interest you pay.
How much sooner depends on the amount, the rate and how consistent you are. I can show you your own numbers. Before you count on this, confirm that your loan has no prepayment penalty. Most standard mortgages don't.
The Risks to Think About First
Using home equity to pay off debt can help, but it isn't free money. Before you decide:
You're turning unsecured debt into debt secured by your home. If you can't make the payments, your home is at risk.
Stretching debt over a longer term can cost more in total, even with a lower rate, if you only make the minimum payment.
Closing costs can offset part of the savings, especially on a cash-out refinance.
The debts can come back. This only works if the credit cards stay paid off. If the balances build up again, you'll have both the bigger mortgage and the cards.
HELOC rates are usually variable, so the payment can rise.
The tax deduction may not apply. Interest on home equity debt used to pay off cards or a car generally isn't deductible. The deduction usually applies only when the money is used to buy, build or substantially improve your home. See IRS Publication 936 and check with your tax professional.
What Lenders Look At
Requirements vary by loan program and lender, but most will look at:
Your equity: for a cash-out refinance, most conventional and FHA loans allow you to borrow up to about 80% of your home's value. HELOC limits vary by lender, often up to about 80% to 90% combined with your first mortgage.
Credit score and history
Debt-to-income ratio: debts paid off at closing usually no longer count against you, which can help.
Income and employment
How long you've owned the home and had your current loan, since seasoning rules apply to cash-out refinances
To see your estimated equity, try my free home equity report.
Debt Payoff FAQs
Does it ever make sense to refinance a low-rate mortgage?
It can, when the combined cost of your other debts is high enough that a new loan lowers your blended rate and total payments. It depends on your balances, rates and plans, so it's worth running the numbers.
Is a HELOC or a cash-out refinance better for paying off credit cards?
If your mortgage rate is low and the card balances are modest compared with your mortgage, a HELOC or home equity loan often makes more sense. If the debts are large, a cash-out refinance may. I'll show you both.
Will paying off debt with my home equity hurt my credit?
Opening a new loan can cause a small, temporary dip. Paying down card balances usually lowers your credit utilization, which can help over time.
Can I pay off a car loan with a HELOC?
Usually, yes. Just remember the car will lose value faster than the loan is paid off if you stretch the payments out over many years.
What if I only need to pay off a small amount?
Closing a new loan may not be worth it for a small balance. A budget plan, a balance transfer card or paying it down directly may cost less.
How long does it take?
It depends on the lender, the appraisal and title work. For a HELOC or cash-out refinance on your primary home, there's also a three-day right to cancel after closing before funds are released.
Let's Compare Your Options
If you're a homeowner in North Carolina or South Carolina with a low mortgage rate and higher-rate debts, I'll compare keeping your mortgage and adding a HELOC with a cash-out refinance. You'll see your blended rate, total monthly payments, closing costs and how long it takes to be debt-free with each one, so you can decide what fits.
Schedule a mortgage consultation or start your mortgage application.
Paul Mattos
Mortgage Broker | Refine Mortgage
Carolina Home Financing
NMLS# 2339069 | Licensed in NC and SC
Call or text: 980-221-4959
Email: paulm@refinemortgage.net
Refine Mortgage Inc. | NMLS# 2417960 | Equal Housing Lender. This article provides general educational information and is not a commitment to lend, a rate quote, an offer of specific credit terms, or tax, legal or financial advice. Savings are not guaranteed; consolidating debt may increase the total interest paid if repaid over a longer term, and your home secures any home equity loan, HELOC or refinance. HELOC rates are usually variable and can increase. Average rates cited are from the Federal Reserve and are not rates offered by Refine Mortgage. Financing is subject to credit, income verification, property valuation, title and underwriting requirements. Not all applicants will qualify.
