Dimon Sounds Alarm: Higher Bank Taxes Risk Capital Flight from London

JPMorgan Chase CEO Jamie Dimon has warned the new UK government against raising taxes on banks, citing potential capital flight and a negative impact on London's financial sector. Speaking on a podcast released July 21, 2026, just one day after Prime Minister Andy Burnham took office, Dimon stated that an uncompetitive tax system can lead to capital leaving a country.

Dimon specifically mentioned the £3 billion JPMorgan headquarters project in Canary Wharf, which he said may not happen if the tax environment becomes hostile. He framed the current corporation tax surcharge of 3% on profits above a set threshold as a direct hit to shareholders, including pension funds and retail investors, who have already paid $5 billion due to this regime.

The UK government faces an uncomfortable calculus: raising bank taxes may poll well politically but could lead to investment losses in the long run. A rate increase would likely weigh on sentiment across the sector, while a commitment to hold or reduce the surcharge could be seen as a positive signal for institutions with large UK operations.