Bank of England raises interest rates to 4%: what it means for savers and investors

Inflation had been moving closer to the Bank’s 2% target earlier this year, but that progress has since reversed. UK Consumer Prices Index (CPI) inflation rose to 3.5% in September, up from 3.1% in August, with higher transport costs, particularly motor fuels, making the largest contribution to the increase.

Only a few months ago, the outlook for interest rates appeared very different. CPI inflation had fallen as low as 2.6% in June, raising expectations that interest rates could continue to fall. But since then, inflation has started to rise again. 

The conflict in the Middle East has disrupted energy supplies and transport, contributing to higher prices for oil and gas. The Bank of England now expects inflation to rise to around 5% by the middle of 2027 as higher energy costs feed through to household bills and the wider economy.

So far, there is limited evidence that higher energy costs are having significant knock-on effects on other prices and wages. However, the Bank believes there is now enough inflationary pressure in the pipeline to justify raising rates, particularly as economic activity has been stronger than expected in recent months.

Today’s decision therefore represents a change in direction, but it does not necessarily mean we are entering a sustained period of interest rate rises. The Bank has stressed that monetary policy is not on a pre-set path and that future decisions will depend on how inflation, wages, prices and the wider economy develop.

By raising the base rate, inflationary pressures may reduce over time. But it may also affect mortgage costs, investment markets, and broader financial planning decisions. Retail banks and financial institutions may increase their savings accounts rates as the base rate rises. 

But a higher base rate also leads to higher borrowing costs. Mortgage costs may increase for some borrowers, particularly those coming to the end of fixed-rate deals or with variable-rate mortgages. Other types of debt products, such as personal loans and credit cards, may also become more expensive.

Rising rates may also have an impact on other types of investment assets. In the bond market, existing bonds could become less attractive when newer ones offer higher rates of interest, which can put downward pressure on bond prices and increase yields.

For savers, today’s announcement could bring some welcome news.

Savings providers often adjust the rates they offer in response to changes in the base rate. An increase to 4% could therefore support savings rates and potentially lead to more competitive deals becoming available, although providers are not obliged to pass on base rate changes in full.

However, the broader inflation picture remains important. With the Bank of England expecting inflation to rise further, the real, inflation-adjusted value of cash savings could still be eroded, even if the interest rate you receive increases.

This could be a good time to review whether your money is working hard enough and whether the amount you hold in cash remains appropriate for your needs and longer-term goals.

For investors, today’s rate rise is another reminder that the path for interest rates can change as economic conditions evolve.

Higher interest rates can create headwinds for some parts of financial markets because they increase borrowing costs for businesses and can affect the valuations investors are prepared to pay for certain assets. Bond markets may also react as investors reassess the outlook for inflation and future interest rates.

However, one rate rise does not necessarily signal the start of a prolonged cycle of increases. The Bank of England has made clear that today's decision should not be viewed as the first in an inevitable sequence of rate rises, although further increases remain possible if inflationary pressures persist. 

For long-term investors, trying to predict the timing and direction of every interest rate decision can be difficult. A diversified portfolio can help spread risk across different types of investments and market conditions, while keeping the focus on longer-term financial goals rather than short-term market movements.

Amid continued global uncertainty, today’s decision is a reminder of the value of:

• Diversification: Spreading investments across different asset classes, sectors and regions can help manage risk during uncertain market conditions.
• Cash management: Higher interest rates may create opportunities for savers, but it is still important to consider the impact of inflation and whether your savings strategy remains aligned with your financial goals.
• Long-term planning: Markets and interest rates will change over time. Keeping your financial plan focused on your longer-term objectives can help avoid reacting to short-term developments.

The Bank of England’s decision to raise rates reflects a changing inflation outlook, particularly as higher energy prices continue to work their way through the economy. But future interest rate decisions will depend on how those pressures develop. 

For savers and investors, this may be a useful moment to review your financial plan rather than make significant changes in response to a single interest rate decision.

This article is for information purposes only. It is not intended as investment advice.

The value of investments and the income from them can fall as well as rise and are not guaranteed. Investors might not get back their initial investment.

There is no guarantee by investing money it will keep level or beat inflation, particularly when inflation is high.

Any views expressed are our in-house views as at the time of publishing.