16th September 2026
The Bank of England faces an increasingly difficult decision tomorrow after UK inflation rose to 3.1% in August, according to the latest figures from the Office for National Statistics.
CPI inflation increased from 2.9% in July to 3.1%, moving further above the Bank's 2% target.
The rise was driven largely by transport costs, particularly motor fuels, as the global oil price remains above $100 a barrel amid continuing disruption in the Middle East.
The Bank is widely expected to leave interest rates at 3.75% on Thursday, but today's inflation figures could make the message accompanying the decision particularly important.
Oil creates a difficult problem
The Bank faces a problem it cannot easily solve.
Higher interest rates can reduce demand in the economy, but they cannot produce more oil or repair damaged energy infrastructure.
With Brent crude recently trading above $100 a barrel, higher fuel and energy costs are feeding into household and business costs.
That could keep inflation higher for longer.
There is, however, some encouraging news for the Bank.
Core CPI remained at 2.6%, while services inflation was unchanged at 3.4%. This suggests that, so far, the latest increase in headline inflation has not resulted in a broad acceleration in underlying price pressures.
Analysts are becoming more cautious
While most economists expect the Bank to hold rates tomorrow, some major financial institutions have become more concerned about the outlook.
Goldman Sachs expects the Bank to raise rates by 0.25 percentage points in November, while Citi is forecasting increases later this year and in early 2027.
Financial markets have also been adjusting their expectations as oil prices have risen.
That means tomorrow's announcement could be less about what the Bank does immediately and more about what it says about the months ahead.
What does it mean for mortgages?
For homeowners and borrowers, a hold at 3.75% would provide no immediate change in Bank Rate.
But it does not necessarily mean mortgage rates will fall.
If markets begin to expect another Bank rate increase later this year, fixed mortgage rates could remain under pressure.
Savers, meanwhile, could benefit if interest rates remain higher for longer.
The key question
The Bank must decide whether the latest rise in inflation is primarily a temporary energy shock or the beginning of a more persistent inflation problem.
At present, the evidence is mixed.
Headline inflation is moving higher, but core and services inflation remain broadly stable. Meanwhile, the UK labour market has been showing signs of weakness.
That leaves policymakers with a difficult balancing act: raising rates could help prevent inflation becoming entrenched, but higher borrowing costs could further weaken economic growth.
Tomorrow's expected decision to hold Bank Rate at 3.75% may therefore be only the first part of the story.
The real message will be whether the Bank believes inflation will fall back towards its 2% target — or whether the latest oil shock means interest rates may have to stay higher for longer.
With oil prices still elevated, that question is unlikely to disappear anytime soon.