Santander UK customers overpaid their mortgages by more than £894 million in the first four months of 2026, as borrowers sought to reduce interest costs and build greater financial resilience.
The lender said regular and one-off overpayments between January and April were more than £200,000 higher than in the same period in 2025.
The figures suggest that, despite pressure on household finances from higher borrowing costs and everyday spending, some homeowners are continuing to use spare funds to reduce their mortgage debt.
Graham Sellar, head of Santander for intermediaries, said: “We know that many headlines paint a bleak picture for homeowners, with rising borrowing and living costs leading to a tightening of finances.
“That’s why seeing over £200,000 more in overpayments from customers in the first four months of 2026 is a really encouraging sign that, even with stretched budgets, homeowners are taking confident steps to reduce what they owe, save on interest in the long-run and build more security for the future.”
Santander mortgage customers can overpay up to 10% of the outstanding capital on their mortgage before incurring any early repayment charges.
Overpayments can be made as a one-off payment or through regular monthly payments starting from £10 a month, using the Santander app, online or over the phone.
The lender also offers an online overpayments calculator, which allows customers to assess the effect of overpaying on the amount of interest saved and the time taken to repay the mortgage.
In June 2025, Santander introduced the ability for brokers to make an early repayment charge-free overpayment for clients before accepting a product transfer, without affecting the borrower’s existing early repayment charge-free overpayment allowance.
