Should I Refinance My Mortgage to Pay Off Debt?
By Tiffany Quaye · Last reviewed 2026-08-01
The short answer
Refinancing to pay off debt usually makes sense when the interest rate gap is large, you have equity below the 80% ceiling, and you have a plan for the freed-up cash flow. It rarely makes sense when the penalty is large, the balances are small, or the spending that created the debt hasn't changed.
Start with the rate gap
The case for consolidating rests on one number: the difference between what you're paying on your debt and what you'd pay on a mortgage. A $40,000 balance at 22% costs about $733 a month in interest alone. The same balance at mortgage rates costs a fraction of that. When the gap is that wide, the monthly maths tends to work.
When the gap is narrow — say a car loan at 6% — the benefit shrinks quickly, and stretching that balance over 25 years can cost more than it saves.
Then check the penalty
If you're mid-term on a fixed mortgage, the penalty is the greater of three months' interest or the interest rate differential. IRD penalties can run into five figures. Compare the penalty to twelve months of interest savings: if it takes years to break even and your renewal is eighteen months away, waiting is often the better play.
Then be honest about the pattern
The version that works
- Consolidate at the lowest available cost, ideally at renewal to avoid a penalty.
- Close or reduce the limits on the cards that got paid out, at least temporarily.
- Take part of the monthly savings and set it up as an automatic prepayment.
- Revisit at your next renewal, when the plan can be tightened again.
Questions people ask
Is it smart to use home equity to pay off credit cards?
It's often financially efficient because of the rate difference. It becomes unwise if the balances rebuild, because you've converted unsecured debt into debt secured against your home.
How much equity do I need to consolidate debt?
Enough that your existing mortgage plus the debt being consolidated plus costs stays at or under 80% of your home's appraised value.
Want this applied to your actual numbers?
Articles are general. Your file isn't. Bring your balances and your renewal date and I'll tell you what I'd do in your position.
Related reading
Not sure which option fits your situation?
Bring your numbers — mortgage balance, balances you're carrying, and what's stressing you out. I'll walk you through what's realistic, including when doing nothing is the better call.