How debt consolidation into a mortgage works
If you have equity in your home (i.e., your property is worth more than you owe on it), you can remortgage to a higher amount and use the extra cash to pay off other debts. For example: your home is worth £300,000, you owe £150,000 on the mortgage, and you have £30,000 in credit card and loan debt. You remortgage to £180,000 and use the additional £30,000 to clear the other debts.
Alternatively, you can take out a secured loan (second charge mortgage) alongside your existing mortgage rather than disturbing the current deal.
The financial case for debt consolidation
The appeal is straightforward: credit card debt at 20–25% APR becomes mortgage debt at 4–6% APR. On £30,000 of credit card debt at 22%, you're paying £6,600 in interest per year. At a mortgage rate of 5%, that same £30,000 costs £1,500 in interest — a saving of £5,100 per year.
Monthly payments also usually drop significantly, improving cash flow and reducing financial stress.
The critical risks to understand
Your home is now at risk. Unsecured debts (credit cards, personal loans) cannot lead to your home being repossessed if you can't pay. Secured debts can. By consolidating unsecured debt into your mortgage, you've converted it to secured debt — a fundamental change in the risk profile.
The total interest paid may actually increase. While the rate is lower, mortgage terms are much longer. Paying off £30,000 over 20 years at 5% costs roughly £19,800 in total interest. Paying it off over 3 years at 22% costs roughly £11,000. The lower monthly payment often means higher total interest paid over the full term.
Early repayment charges on your current mortgage. If you're mid-deal, remortgaging to consolidate may trigger significant ERCs. A debt consolidation broker will calculate whether it's worth paying these.
When debt consolidation into a mortgage makes sense
- You have significant equity in your home
- Your existing mortgage deal is ending or has low ERCs
- The monthly payment relief materially improves your financial position
- You have the discipline not to accumulate the same debts again
- You understand and accept the risk of securing the debt against your home
When it probably doesn't make sense
- The debts are relatively small and manageable at current rates
- You have significant ERCs on your current mortgage
- You're close to paying off the unsecured debts anyway
- You've consolidated debt before and accumulated similar debt again
The right approach
Get independent advice from a debt consolidation broker who will calculate the total cost of every option — not just the monthly payment. They'll compare a debt consolidation remortgage, a secured consolidation loan, and keeping the debts unsecured, and tell you honestly which is the most cost-effective approach for your specific situation. Nesto matches you with an independent adviser for free. Think carefully before securing any debt against your home — your home may be repossessed if you do not keep up repayments.