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Jamie Dimon warns UK chancellor against raising bank taxes at October budget

The JPMorgan chief's intervention brings the investment and employment stakes of Britain's bank-tax debate directly into the chancellor's preparations for his first budget.

A private meeting brings bank taxes into the budget debate

JPMorgan chief executive Jamie Dimon warned UK Chancellor John Healey that higher bank taxes could put British investment and employment at risk, the Guardian reported after the two met on September 9. The intervention came as Healey prepared his first budget, scheduled for October 28, amid speculation that the government could consider additional levies on banks and energy companies.

No new bank tax had been announced, and the Guardian said the prime minister had not made a specific commitment. That distinction is important: Dimon's warning was an attempt to influence an unresolved fiscal decision, not a response to published legislation. The immediate development was the meeting itself and the direct presentation of JPMorgan's concerns to the chancellor.

Investment, revenue and financial stability are in tension

JPMorgan has substantial exposure to the outcome. The bank employs about 23,000 people in Britain and has discussed a large new Canary Wharf headquarters. Dimon has previously linked the investment to a supportive business environment. His argument is that a heavier tax burden could alter decisions about jobs and capital, though the meeting produced no publicly verified commitment from the government.

Britain already applies sector-specific charges. Banks pay the standard corporation-tax framework alongside a surcharge and a separate levy linked to balance sheets. HM Revenue and Customs tracks receipts from corporation tax, payroll taxes, the bank levy and the bank surcharge. Its latest official release schedule confirms that updated 2026 banking-sector tax statistics are due on October 1, giving policymakers fresh data before the budget.

The government is simultaneously presenting itself as pro-investment. In a September 7 growth speech, Healey promised faster decisions, regulatory reform and support for expanding companies while reaffirming his commitment to fiscal rules. The budget will show how he balances those objectives against demands for additional revenue and cost-of-living relief. What to watch is whether ministers formally consult banks, propose a windfall measure, adjust existing surcharges or leave the sector's tax structure unchanged.