Britain's largest banks are anticipating a potential windfall tax on their significant profits as the new Chancellor, John Healey, seeks revenue streams to manage the nation's finances. Senior industry analysts suggest that banks are prime targets for additional taxation as the government aims to balance the books while adhering to fiscal rules limiting public borrowing.
The scale of these profits is expected to become clearer this week with the release of financial results from major institutions like Lloyds, NatWest, and Barclays. City forecasts indicate these banks are on track to collectively earn nearly £19 billion this year, an increase from approximately £16 billion in 2025. This profit surge is largely attributed to sustained higher interest rates, which have widened the net interest margin—the difference between interest paid to savers and charged to borrowers.
The prospect of a new tax has drawn attention from various political factions, with industry observers deeming a windfall tax highly probable. Ed Firth of investment bank KBW stated that the likelihood of such a tax is around 95%, noting that banks are generating profits far exceeding their cost of equity and are returning substantial capital to shareholders. Gary Greenwood of Shore Capital added that consistently strong profits make banks vulnerable to political scrutiny.
Bank executives have voiced concerns that a windfall tax could reduce lending capacity, potentially hindering economic growth. Jamie Dimon, CEO of JP Morgan, recently cautioned Prime Minister Andy Burnham against increasing taxes on banks, warning that it could jeopardize plans for a new £3 billion headquarters in London and deter investment in Britain.
Potential Tax Mechanisms
Experts suggest that the government might increase the bank surcharge, a tax levied at 3% on top of the standard 25% corporation tax for banks earning over £100 million annually. The Trades Union Congress estimates that reversing the reduction of this surcharge from 8% to 3% in 2023 could generate £9 billion over four years. This move could help finance increased spending on welfare, defense, and cost-of-living measures, such as support for energy bills.
Another potential revenue source being considered is the limitation of a 'reserve tiering' scheme, which critics describe as a stealth subsidy costing taxpayers an estimated £20 billion annually. Under this scheme, banks receive interest on reserves they hold at the Bank of England. These reserves, built up significantly following the 2008 financial crisis quantitative easing program, now yield interest at 3.75% due to the elevated Bank of England base rate. John Cronin, founder of SeaPoint Insights, noted that while reserve tiering is a possibility, the surcharge appears to be a more straightforward adjustment.
Previously, former Chancellor Rachel Reeves had resisted calls for a windfall tax on banks, despite strong lobbying efforts. Simultaneously, regulations designed to enhance bank security after the financial crisis are undergoing relaxation. The trade body UK Finance has argued that a new banking tax would negatively impact Britain's international competitiveness and impede government growth objectives. According to PwC, banks paid a total of £43 billion in taxes last year.