The chairman and chief executive of one of the world's biggest banks has said countries have "got to be careful" with their budgets and ask themselves what a tax rise is for.
Bank of America's Brian Moynihan was speaking about the UK budget to Sky's Wilfred Frost on his The Master Investor Podcast.
While Mr Moynihan said the recent UK fiscal announcement was "fine with Bank of America", he added that governments must be careful with financial markets' reaction.
"All countries have to understand that the simple question a business asks is, you want higher taxes... higher taxes for what? If the 'for what' is not something that makes sense, that's when you get in trouble," Mr Moynihan said.
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The American executive was complimentary of the UK as a centre for financial services, saying, "You've got to realise this is one of your best industries".
"You have many other good industries, but a great industry for you is financial services".
The power of London
While Paris was looked to in the wake of Brexit, London has pulling power for Bank of America and its staff, Mr Moynihan said.
"London is a great city for young kids to come work. People from all over the world will come work here a while and leave, and others will stay here permanently.
"That's the advantage you have. You're built. And while other financial centres are trying to build.... you're built, you're there."
London, he said, is Bank of America's "headquarters of the world".
Mr Moynihan was upbeat about the prospects for the country too. "It's more upside for the UK right now than anything else," he said.
Bank of America is the second-largest bank in America with a market capitalisation of nearly $300bn - making it roughly 10 times bigger than Barclays, Lloyds and NatWest, and more than three times bigger than HSBC.
Having met with the King again on his latest trip to the UK, the CEO said, "his briefing and his knowledge and his passion... it not only impresses me, but I've seen it in front of so many people over the last six years. It impresses everybody".
Mr Moynihan - one of the longest-serving Wall Street chief executives - has been leading Bank of America since 2010, when he was brought after the financial crisis.
(c) Sky News 2025: Bank of America boss Brian Moynihan warns countries to 'be careful' when raising tax
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