JPMorgan Chase chief executive Jamie Dimon has warned the UK government that higher taxes on banks could put investment and jobs at risk as pressure builds ahead of the 28 October Autumn Budget.
Dimon met Prime Minister Andy Burnham and Chancellor John Healey in London on 9 September. His warning comes as unions and campaign groups push for banks to pay more after another period of strong profits.
No new bank tax has been announced. However, the debate is becoming more important as the Budget gets closer.
Why Jamie Dimon’s Warning Matters
JPMorgan has a major presence in the UK. The bank employs around 23,000 people and is planning a £3 billion new European headquarters in Canary Wharf.
The proposed headquarters is more than a property project. It represents a major long-term investment in London. JPMorgan has previously linked the project to the UK maintaining a positive and predictable business environment.
Dimon has argued that higher taxes could make global banks rethink where they invest and hire. He has also pointed to New York as an example of how, in his view, heavier tax pressure can push financial jobs elsewhere.
That makes the debate relevant beyond the banking sector. Investment decisions by large financial groups can affect jobs, commercial development and confidence in London as a global financial centre, an environment closely watched by finance professionals across the City.
Why Calls for Higher Bank Taxes Are Growing
The government is also under pressure from groups that believe banks can afford to contribute more.
The TUC said HSBC, Barclays, Lloyds and NatWest made around £29 billion in pre-tax profit during the first half of 2026. It has called for an increase in the Bank Corporation Tax Surcharge to help fund lower household energy bills.
The four largest banks have also generated more than £200 billion in pre-tax profits over five years. Supporters of higher taxes argue that these earnings give the government room to raise more revenue from the sector.
Banks already face the 25% main Corporation Tax rate, alongside a 3% Bank Corporation Tax Surcharge on qualifying profits above the £100 million group allowance and the separate Bank Levy.
UK Finance estimates that the banking sector contributed £43.3 billion in total taxes in the year to March 2025. Its model London bank had a 46.4% total tax rate in 2025, higher than comparable rates in New York, Dublin and Frankfurt.
What Could This Mean for UK Businesses?
For business owners, the immediate message is simple: nothing has changed yet.
A higher bank tax has not been confirmed. Businesses should therefore avoid making financial decisions based on Budget rumours.
However, companies that rely on bank finance, outside investment or major expansion should follow the debate closely, especially those in financial services. Any final decision could affect how banks view future UK investment and could send a wider signal about the government’s approach to business taxation.
Ignoring these developments could leave firms with less time to respond if tax or financing conditions change after the Budget.
What Should Businesses Do Now?
Businesses should review cash flow, borrowing needs and planned investment before 28 October, supported by accurate bookkeeping throughout the year. They should also separate confirmed tax changes from political speculation and wait for the official Budget before making major tax decisions.
At Lanop Business & Tax Advisors, we monitor UK tax and fiscal developments and explains what confirmed changes mean for businesses. With support across corporate tax, cash-flow planning and business advisory, we can help companies assess the impact and respond once the government sets out its final policy. Contact Lanop today to book a free consultation and get ahead of any changes from the Autumn Budget.
