The stock of interest-only mortgages in the UK has significantly declined, with outstanding loans dropping by nearly 18% to 445,000 by the end of 2025, according to recent data from UK Finance. This trend indicates a substantial shift in borrowing patterns, reflecting both lender caution and borrower responsiveness to repayment strategies.
TL;DR: The number of interest-only mortgages has decreased by 18% to 445,000; this decline affects borrowers and lenders, suggesting improved repayment strategies among homeowners.
What caused the decline in interest-only mortgages?
The reduction in interest-only mortgages can be attributed to several factors. Firstly, the total stock of interest-only and part-repayment mortgages has fallen by over 81% since 2012, highlighting a long-term trend away from this borrowing type. In 2025 alone, the number of interest-only loans with loan-to-values (LTVs) above 75% fell by 27%, now representing only 4% of the total interest-only stock. This decline reflects a shift towards more responsible lending practices and borrower behaviour, with many opting for repayment plans sooner rather than later.
How are borrowers responding to their interest-only loans?
Borrowers with interest-only mortgages are increasingly proactive in managing their repayment strategies. The data shows that 114,000 fewer interest-only mortgages were recorded at the end of 2025 compared to the start of the year. This indicates that many homeowners are either repaying capital early, switching to repayment mortgages, or exploring refinancing options. Furthermore, the number of interest-only loans set to mature by 2027 has halved to 60,000, suggesting that borrowers are taking steps to address their repayment plans well ahead of their mortgage terms ending.
What does this mean for homeowners and lenders?
For homeowners, the decline in interest-only mortgage stock signifies a more robust financial position, with over two-thirds of remaining borrowers having an LTV ratio of less than 50%. This strong equity position allows homeowners greater flexibility in their financial decisions, whether they choose to refinance, switch to a repayment mortgage, or consider later-life lending options. For lenders, the proactive engagement with borrowers is yielding positive results, as evidenced by the reduction in maturing loans and the overall health of the interest-only mortgage book. This trend may encourage lenders to continue offering tailored solutions that support borrowers in managing their repayment strategies effectively.
Frequently asked questions
What is an interest-only mortgage?
An interest-only mortgage is a type of loan where the borrower only pays the interest on the loan for a set period, without repaying the principal amount. This can result in lower monthly payments but requires a plan for repaying the principal later.
Are interest-only mortgages still available?
Yes, interest-only mortgages are still available, but lenders have become more cautious. They often require borrowers to demonstrate a clear repayment strategy, especially for loans with higher LTV ratios.