Introduction
On 5 November 2026 the Bank of England raised Bank Rate from 3.75% to 4%. This Bank Rate rise is the first increase since August 2023, and it ends three years in which the only direction of travel was downwards. If you hold a Stocks and Shares ISA, a SIPP or a cash savings account, the useful question is not whether a quarter of a percentage point is a lot. It is which parts of your money the decision actually reaches.
The short version is this. A Bank Rate rise moves the return on cash and short-dated government debt quickly, moves savings rates with a lag and at each provider’s discretion, and reaches a diversified holding of shares only indirectly. The detail most coverage skips is that the new rate still sits below the level at which the Bank itself expects inflation to peak.
The value of investments can fall as well as rise and you may get back less than you invest. This article is for information and education only and is not financial advice. Tax rules, allowances and interest rates can change.
What The Bank Rate Rise Actually Changed
The Monetary Policy Committee met on 4 November 2026 and published its decision the following day. Eight of the nine members voted for a quarter point increase to 4%. One member, Catherine L Mann, voted for a half point increase to 4.25% instead.
The Committee’s stated reason was inflation. CPI was 3.5% in the year to September 2026, released by the Office for National Statistics on 21 October 2026, against a target of 2%. The Bank’s November projections have headline CPI rising further before it falls back, which is why a Bank Rate rise arrived rather than another cut.
| Measure | Figure |
|---|---|
| Bank Rate before | 3.75% |
| Bank Rate after | 4.00% |
| Decision announced | 5 November 2026, meeting ended 4 November 2026 |
| Vote | 8 to 1 for a quarter point rise |
| The dissent | 1 member for a half point rise, to 4.25% |
| CPI, year to September 2026 | 3.5% |
| Projected CPI, 2027 Q1 | around 4.5% |
| Projected CPI, 2027 Q2 | around 5% |
| Previous increase | August 2023, to 5.25% |
| Next scheduled decision | 17 December 2026 |
Source: Bank of England Monetary Policy Summary and Minutes, November 2026, and Monetary Policy Report, November 2026; Office for National Statistics Consumer Price Inflation, September 2026. Verified 12 November 2026.
Why The Bank Rate Rise Does Not Close The Inflation Gap
This is the part that matters more than the headline. A Bank Rate of 4% is higher than it was, but the Bank’s November projections put CPI at around 4.5% in the first quarter of 2027 and around 5% in the second. If those projections are roughly right, the return available on cash would sit below the rate at which prices rise, even after the increase.
That gap is what a negative real return means in practice. It does not make cash useless, because cash does a job nothing else does: it is the money you can reach on the day you need it, and its nominal value does not fall. It does mean that money left in cash for years rather than months tends to lose purchasing power, and a higher headline rate does not by itself fix that. Our explainer on what the 3.5% inflation reading means for investors works through the arithmetic.
Savings vs inflation
UK inflation 3.5%CPI, September 2026
Are your savings beating inflation?
Prices are rising by 3.5% a year. Any rate below that means your money buys less each year.
In 5 years, your £10,000 would buy what £9,296 buys today. That is £704 less.
To keep up you need at least 3.50%. Over 5 years, the best Cash ISA in our table (Hargreaves Lansdown, 4.52%) would leave you £503 ahead of inflation, tax-free.
CPI from the ONS, updated automatically. Cash ISA rates checked 11 November 2026. Rates are variable.
Who The Bank Rate Rise Actually Affects
A policy rate is a wholesale price. It reaches different parts of a portfolio at very different speeds, and in one case barely at all.
Cash And Cash ISAs: Expect A Lag
Providers set their own savings rates and are under no obligation to pass on the full quarter point. Some pass on most of it within weeks, others pass on very little at all.
Short-Dated Gilts And Money Market Funds: The Closest Link
These are the mainstream holdings that track the policy rate most directly, because the yields inside them reset over weeks and months rather than years.
Longer-Dated Bonds: Largely Priced In Already
Longer bond prices move on where the market thinks rates are heading, not on the rate set today. A widely expected rise is usually in the price before it is announced.
Shares: The Slow, Indirect Route
A higher rate feeds through to company borrowing costs and to how future profits are valued. That is a real mechanism, but it is slow, indirect and easily swamped by everything else moving at the same time.
What A Bank Rate Rise Means Inside An ISA, A SIPP And A General Account
The wrapper does not change what a Bank Rate rise does to an asset. It changes what happens to the return afterwards.
Interest earned on cash held outside a wrapper is taxable income, and the rates charged on savings interest are due to rise from 6 April 2027. Interest earned inside a cash ISA or a Stocks and Shares ISA is not taxed at all, and it never enters your total income for any other tax test. A SIPP shelters it as it accrues, although withdrawals are taxed as income later.
There is a practical point that often goes unnoticed. A higher Bank Rate also lifts the interest platforms themselves earn on uninvested cash sitting in client accounts, and how much of that interest each platform passes on to you varies a great deal. That is a charges question rather than a rates question, and the answer sits in your provider’s own published terms rather than in any Bank of England statement.
See what UK platforms charge, and what they pay you on uninvested cash.
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Timeline And What To Watch
The next scheduled decision is 17 December 2026. The Committee was explicit that it is not following a predetermined path, and said it will reassess the evidence at each meeting, with pay, pricing behaviour and the amount of slack in the economy as the things it is watching.
Members disagreed in public about what comes next. Alan Taylor described the increase as insurance and said “this is not the start of a hiking cycle”. Others indicated that a single quarter point move may not prove enough on its own. Treating either comment as a forecast would be a mistake, and nobody needs to guess correctly in order to invest sensibly.
What Is Worth Watching, And What Is Not
Worth watching: the next CPI release, the December decision, and whether the rate on your own cash has actually moved. Less useful: daily commentary predicting where rates go next.
Key Takeaways
The Bank Rate Rise Is Real, But Small
Bank Rate moved from 3.75% to 4% on 5 November 2026, on an 8 to 1 vote. It is the first increase since August 2023.
A Higher Rate Is Not The Same As A Positive Real Return
The Bank projects CPI at around 5% in the second quarter of 2027, above the new Bank Rate, so cash can still lose purchasing power.
Your Provider Decides What You Actually Receive
A change in Bank Rate is not a change in your savings rate. Check what your own account and platform pay rather than assuming the quarter point arrives.
A Long-Term Plan Does Not Need Rebuilding Around A Quarter Point
One policy move is not a reason to redesign a diversified, long-term portfolio. Cost, diversification and how long you stay invested matter far more.
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Sources: Bank of England, Monetary Policy Summary and Minutes, November 2026; Bank of England, Monetary Policy Report, November 2026; Office for National Statistics, Consumer Price Inflation, September 2026; Bank of England, Monetary Policy Summary and Minutes, August 2023. All verified 12 November 2026.
The value of investments can fall as well as rise and you may get back less than you invest. This article is for information and education only and is not financial advice. Tax rules, allowances and interest rates can change.
