Consolidating Credit Card Debt into Your Mortgage

Why Credit Cards Are So Expensive

The average UK credit card charges around 20% to 25% APR, with some store cards and subprime cards charging even more. If you're only making minimum payments, the majority of each payment goes to interest rather than reducing the balance. A £5,000 credit card balance at 22% APR with minimum payments could take over 25 years to clear and cost more than £7,000 in interest.

This is why consolidating credit card debt into a mortgage at 4% to 5% looks so attractive. The interest rate drop is enormous, and your monthly payment towards the debt falls significantly. But the decision isn't as straightforward as comparing interest rates alone.

The Monthly vs Total Cost Trade-Off

Let's work through a real example. Suppose you have £12,000 in credit card debt at 22% APR. On a structured three-year repayment plan, you'd pay about £4,200 in interest (total repayment: £16,200) with monthly payments of around £450.

If you added that £12,000 to a 25-year mortgage at 5%, your monthly payment on the extra borrowing would be about £70 — a huge reduction. But the total interest over 25 years would be approximately £9,000 (total repayment: £21,000). You'd pay more than double the interest, despite the rate being less than a quarter of the credit card rate.

The lesson is clear: if you consolidate, you should plan to overpay the extra mortgage borrowing as quickly as possible to minimise total interest.

How the Process Works

When you remortgage to consolidate credit card debt, your solicitor typically pays your credit card companies directly from the remortgage proceeds. This ensures the debts are definitely cleared and gives the lender confidence that the funds are being used as stated. You'll need to provide recent credit card statements showing the balances to be consolidated.

Some lenders may require that your credit card accounts are closed after they're paid off, to prevent you running up new balances. Others leave this to your discretion. Either way, it's important to have a plan for managing spending going forward to avoid falling back into credit card debt.

Avoiding the Debt Cycle

The biggest risk of consolidating credit card debt into your mortgage is the temptation to start spending on credit cards again. You've freed up thousands of pounds in available credit, and it can be easy to slip back into old habits. If you consolidate £12,000 in credit card debt and then build up £12,000 more, you've doubled your total borrowing.

To avoid this, consider reducing your credit card limits, setting up direct debits to pay cards in full each month, or switching to a debit card for everyday spending. Some people find it helpful to keep one card for genuine emergencies and cut up the rest. The goal is to use the consolidation as a genuine fresh start, not a temporary fix.