The prospect of a new "windfall" tax on UK banks has re-emerged on the political agenda, driven by campaigners like the Trades Union Congress (TUC) and Positive Money, who point to the $200 billion in pre-tax profits generated by the four largest UK lenders (HSBC, NatWest, Barclays, Lloyds Banking Group) over the past five years. These groups argue that such a tax could help fund measures to address the cost of living crisis.
However, industry representatives and some financial analysts are strongly opposing the idea. They warn that additional taxation would exacerbate an already complex tax system for banks, which currently includes a 25% corporation tax, a 3% banking surcharge on profits exceeding $135.6 million, and a bank levy expected to raise around $1.4 billion in 2025-2026. Concerns are also raised about the potential negative impact on lending, investment, and the UK's attractiveness as a global financial center. JPMorgan Chase CEO Jamie Dimon has reportedly warned that higher bank taxes could have "adverse consequences," and a potential $3 billion Canary Wharf head office plan depends on a "continuing positive business environment in the UK."
Critics of a windfall tax, including a founding partner of Veritum Partners, contend that current higher returns are cyclical, not sustained windfalls, and that such "retribution taxes" are economically flawed. They argue that higher taxes could reduce retained profits for customer lending, increase banks' cost of capital as global investors seek other markets, and lead banks to pass costs onto customers through higher borrowing costs or lower deposit returns. Since 2009, existing measures like the bonus tax, bank levy (2011), and bank tax surcharge (2015) have already raised nearly $50 billion from the sector, which has seen a return on equity of less than 6% since 2009, below its cost of capital. The debate highlights a conflict between raising additional revenue and maintaining the UK's competitiveness in the international banking sector, with a potential tax raid being seen as an attractive, albeit economically debatable, target for Chancellor John Healey's upcoming budget.
