Bill Gates has become the latest billionaire to express concern for presidential hopeful Elizabeth Warren’s plan for a new tax on the super-rich.
At a conference, the philanthropist and Microsoft founder said it would stifle business innovation in America.
Ms Warren, a Democratic front-runner in the 2020 presidential race, has offered to meet Mr Gates in response.
It comes after criticism of Ms Warren’s policy from figures like Jamie Dimon, head of banking giant JP Morgan.
Under the original plan, households with a net worth between $50m (£39m) and $1bn (£780m) will be charged with a 2% “wealth tax” every year. This would rise to 3% for any households with a net worth of over $1bn.
But last week, Ms Warren suggested doubling the latter rate – from 3% to