Nearly Half of UK Mortgages Now High Loan-to-Income Deals

Nearly half of all mortgage advances issued in the second quarter were made to borrowers taking on high loan-to-income ratios, according to data from the Financial Conduct Authority and the Bank of England, as reported by PropertyWire. The figure stood at 46%, up sharply from 41.4% a year earlier. That jump, in the space of just twelve months, marks one of the clearest signals yet that borrowers are stretching further than before to get on or move up the property ladder.

For UK property investors and market watchers, this is not a marginal shift. Loan-to-income ratios are one of the key metrics regulators use to gauge systemic risk in the mortgage market, precisely because they capture how exposed borrowers are to changes in interest rates, employment conditions or income shocks. A rising share of high loan-to-income lending suggests that affordability pressures, rather than easing as some had hoped following recent shifts in the base rate environment, are instead intensifying. Buyers are borrowing more relative to what they earn, which leaves less headroom if their circumstances change or if mortgage rates move against them at the point of remortgaging.

The practical implications differ markedly depending on where in the country a buyer is purchasing. In high-value markets such as London and Surrey, where property prices have long outstripped average earnings, high loan-to-income borrowing has effectively been a structural feature of the market for years. The rise to 46% nationally implies that this pattern is spreading, with buyers in cities such as Manchester, Birmingham, Leeds and Liverpool, traditionally viewed as more affordable alternatives, increasingly having to borrow at levels that would once have been associated almost exclusively with the South East. Newcastle, often cited as one of the more accessible major UK markets, is likely to see this trend arrive later and less acutely, but the direction of travel across the country points the same way.

First-time buyers sit at the centre of this story. Many have little choice but to borrow at higher multiples of income simply to afford a deposit-sized gap between their savings and asking prices, particularly in city centres where demand remains robust. The danger is that this generation of buyers enters homeownership with far thinner financial buffers than previous cohorts, leaving them more vulnerable to income shocks, job losses or unexpected cost increases. Lenders and regulators have historically used loan-to-income caps and stress testing precisely to guard against this kind of fragility building up in the system, so a rise of this magnitude will not go unnoticed by the FCA and the Bank of England as they assess whether current macroprudential settings remain appropriate.

Buy-to-let landlords and commercial investors face a different but related calculus. Higher loan-to-income lending among owner-occupiers tends to support house price resilience in the short term, since it reflects sustained buyer demand and a willingness among lenders to extend credit further up the income multiple scale. That can be good news for landlords looking to sell into a liquid market, or for developers relying on strong owner-occupier demand to underpin new-build sales. But it also signals a market where affordability is being engineered through leverage rather than through wage growth or falling prices, a dynamic that tends to be less durable over a multi-year horizon. Developers planning schemes aimed at first-time buyers should take particular note, since any tightening of lending criteria in response to this data could dampen demand for exactly the price points they are building towards.

Looking ahead to the next six to twelve months, PropertyNews analysis suggests three things are worth watching closely. First, whether the Bank of England and FCA respond to this increase with tighter guidance or stress-testing requirements for lenders, given that high loan-to-income lending is one of the few levers regulators control directly. Second, whether mortgage rates move in a direction that either eases or exacerbates the pressure on these highly leveraged borrowers, since even modest rate rises could have an outsized effect on affordability for those already stretched. Third, whether regional markets outside London and the South East continue to converge towards higher loan-to-income norms, which would mark a genuine shift in how affordability is being managed across the UK rather than a London-specific phenomenon.

The data points to a mortgage market where growth in lending is increasingly reliant on borrowers taking on greater income-multiple risk rather than on structural improvements in affordability. That is a trend regulators, lenders and buyers alike will need to monitor carefully, because a market built on expanding leverage is inherently more sensitive to shocks than one underpinned by rising incomes or falling prices. Investors should treat this rise as an early warning indicator rather than a one-off statistical blip.