UK mortgage rates could be heading higher again as lenders respond to rising wholesale borrowing costs and growing uncertainty over the Bank of England’s next interest-rate decision.
Mortgage pricing has already started to move, with swap rates — which heavily influence the cost of fixed-rate mortgages — recently reaching their highest levels in around three years.
That could mean some of the mortgage deals currently available disappear or become more expensive over the coming weeks.
Lenders Start Raising Rates
Coventry Building Society has already increased some of its mortgage rates, and other banks and building societies could follow if wholesale funding costs remain elevated.
According to figures reported by The Negotiator, the average two-year fixed mortgage is currently around 5.59%, while the average five-year fix stands at approximately 5.63%.
Fixed mortgage rates do not simply follow the Bank of England base rate. Lenders also look closely at financial-market expectations and swap rates when deciding how much to charge borrowers.
This means mortgage rates can rise even if the Bank of England chooses to leave its official rate unchanged.
Could The Bank Raise Interest Rates?
Bank Rate currently stands at 3.75%, but there has been increasing disagreement within the Bank of England over whether rates should rise.
At the Bank’s most recent meeting, six members of the Monetary Policy Committee voted to keep rates at 3.75%, while three — including Chief Economist Huw Pill — wanted an increase to 4%.
Huw Pill has since argued that the Bank may need to act more quickly to stop temporary inflation pressures becoming embedded in the economy.
The Bank’s next interest-rate decision is due on 17 September 2026.
However, a rate rise is far from guaranteed. A recent Reuters survey of economists found that most still expect the Bank to leave rates unchanged, despite renewed concerns over inflation and energy prices.
Why Are Mortgage Rates Rising?
The main problem is uncertainty in global financial markets.
Higher energy prices, inflation concerns and rising government borrowing costs have pushed bond yields and swap rates higher.
For mortgage lenders, that can increase the cost of funding fixed-rate deals.
As a result, lenders may increase their mortgage rates to protect their margins even before the Bank of England makes any change to Bank Rate.
What Does This Mean For Property Buyers?
For anyone buying a property or approaching the end of a fixed mortgage deal, the recent moves are worth watching closely.
A relatively small increase in mortgage rates can make a noticeable difference to monthly repayments.
For example, on a £200,000 repayment mortgage over 25 years, moving from a 4.5% rate to 5.5% increases the monthly payment from roughly £1,112 to £1,228 — around £116 extra per month.
For landlords with larger mortgages, the difference can be considerably greater.
The bigger message is that borrowers should not automatically assume mortgage rates will continue falling just because inflation has previously been moving down.
With wholesale borrowing costs rising and some members of the Bank of England openly supporting higher interest rates, the mortgage market could face another period of increasing rates.
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