How Much More Can You Borrow After the 2026 UK Affordability Easing?
Published 28 July 2026
UK mortgage affordability loosened in 2026. After the Financial Conduct Authority (FCA) reminded lenders they could apply their stress tests more flexibly, several large lenders cut the rate they test you against, letting many people borrow around £28,000 more. At the same time, regulators are relaxing the rule that limited how much of a lender's book could go to borrowers taking 4.5 times their income or more. The practical effect is striking: a household that could borrow about £270,000 on a 4.5-times-income basis can, at a lender offering 5.5 times, reach roughly £330,000. Bank Rate, meanwhile, sits at 3.75% as of mid-2026.
What changed in 2026?
Two separate levers moved. First, the FCA reminded lenders that its rules never required a rigid interest-rate stress margin, and lenders responded: Nationwide, for example, cut its stress rates by between 0.75 and 1.25 percentage points, which it said lets applicants borrow about £28,000 more on average, with up to six times income available to first-time buyers through its Helping Hand range.
Second, the Bank of England is easing a structural limit. Since 2014 its Financial Policy Committee has capped lending at or above 4.5 times income to 15% of each lender's new mortgages. An interim measure has let individual lenders exceed that 15% since 2025, and in April 2026 the regulators consulted on making the change permanent, with new rules expected in the second half of 2026. The system-wide 15% aggregate still stands as a guardrail, so this is a relaxation of the firm-level cap rather than the end of the loan-to-income limit.
How much more can you borrow?
Your maximum turns on two numbers: the income multiple a lender will apply, and the rate it tests you against. Take a household on £60,000 a year. On the long-standing 4.5-times default that is about £270,000. At a lender now offering 5.5 times as standard it is about £330,000, roughly £60,000 more, and a few lenders reach six times, about £360,000, for stronger profiles or through first-time-buyer schemes.
The stress-rate change works on top of that. Because you are judged on whether you could still pay at an assumed higher rate, trimming that assumed rate lifts the figure the model allows, which is where Nationwide's £28,000 comes from. Your own number depends on income, existing debts, your deposit, and the individual lender, so treat the UK mortgage affordability calculator as a starting estimate rather than a promise.
Does borrowing more mean you can afford more?
No. A bigger loan is a bigger monthly payment. On a 25-year term at 4.5%, £270,000 costs about £1,501 a month, while £330,000 costs about £1,834, roughly £333 more each month, close to £4,000 a year. If that loan later reset to 5.5%, the £330,000 payment would rise to about £2,026 a month. The rules set what you are allowed to borrow; your own budget sets what you should. The aggregate 15% cap and each lender's own affordability model also mean the top multiples reach a minority of borrowers, not everyone.
How to work out your own limit
Start with your real income and monthly commitments in the affordability calculator for a realistic range, then confirm with a broker, since lenders treat self-employment, bonuses, and existing credit very differently. If you are approaching the end of a fixed deal, the remortgage calculator shows what moving to a new rate could save, which often matters more than squeezing out the last few thousand pounds of borrowing capacity.
A note on accuracy
The figures here reflect the UK market in mid-2026, with Bank Rate at 3.75%. The loan-to-income change is a proposal expected to take effect in the second half of 2026, with an interim measure already in force, and income multiples vary widely between lenders. For the source detail see the FCA mortgage rule review and the Bank of England consultation, and confirm your own position with a regulated mortgage broker.