Debt consolidation remortgage: how it works

A debt consolidation remortgage replaces the current mortgage with a larger one and uses the extra borrowing to pay off other debts, such as credit cards, personal loans or car finance. The debts are cleared, and the borrower is left with one monthly mortgage payment instead of several separate payments to different lenders.

The new mortgage is usually at a lower rate than credit cards or many personal loans, so the monthly cost can fall. But the debts are repaid over the mortgage term, which is often much longer than the original terms, so the total interest paid can be higher even when the rate is lower.

Moving short-term debt onto a long mortgage term lowers the monthly payment because the balance is spread over more years. The total interest paid depends on the rate and the time taken to repay, so a lower rate over a longer period can still cost more in total than a higher rate repaid over a short period.

Some borrowers keep the consolidated amount on a shorter term, or overpay the mortgage, to clear it faster. Arrangement, valuation and legal fees, and any early repayment charges on the current mortgage or the debts being cleared, add to the cost. Comparing the total repaid under each option shows the real difference.

The biggest change is that debts which were unsecured become secured on the home. If payments on a credit card or personal loan are missed, the lender can chase the debt, but the home is not directly at risk. Once those debts are part of the mortgage, the home is at risk if the mortgage payments are not kept up.

For that reason, FCA mortgage rules (MCOB, FCA Handbook, accessed 20 Oct 2026) require a firm advising on debt consolidation to consider whether securing the debts is suitable, including whether other ways of repaying them would fit better and whether the debts should be repaid over a shorter period.

Lenders ask for a list of the debts to be cleared, with balances and statements, and they often pay some debts directly to the creditors at completion. They assess affordability on the new mortgage, check credit history and look at how the debts arose, because a pattern of growing debt can suggest the problem may return.

Some lenders limit how much of the new loan can go to debt consolidation, or restrict it to certain types of debt. Borrowers with recent missed payments may find fewer lenders open to them, and the remortgage with bad credit page explains how lenders weigh credit problems.

A remortgage is one way to consolidate debt, but not the only one. Unsecured consolidation loans, balance transfer cards and agreeing payment plans with creditors leave the home out of it. A second charge mortgage adds a separate secured loan without changing the first mortgage, which can avoid an early repayment charge on a current deal.

Borrowers struggling with repayments can get free, confidential debt help from MoneyHelper, the government-backed guidance service, and from debt charities, who can explain options such as debt management plans before any new borrowing is taken on.

Clearing cards and loans with a remortgage only helps if the old debts do not build up again. Many borrowers close the cleared accounts or reduce their limits, set a budget and keep an emergency fund, so that unexpected costs do not go back on credit. Lenders may ask for some accounts to be closed at completion.

Reviewing the mortgage when the new deal ends, and overpaying where the terms allow, can shorten the time the consolidated debt stays on the mortgage.