Per the Guardian,
James Henry, former chief economist at consultancy McKinsey and an expert on tax havens, has compiled the most detailed estimates yet of the size of the offshore economy in a new report . . . . He shows that at least £13tn – perhaps up to £20tn – has leaked out of scores of countries into secretive jurisdictions such as Switzerland and the Cayman Islands with the help of private banks.Note, that's 13 to 20 trillion British pounds, which per my computer's converter = more than 20 to 31 trillion US dollars.
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"The problem here is that the assets of these countries are held by a small number of wealthy individuals while the debts are shouldered by the ordinary people of these countries through their governments," the report says.
The sheer size of the cash pile sitting out of reach of tax authorities is so great that it suggests standard measures of inequality radically underestimate the true gap between rich and poor. According to Henry's calculations, £6.3tn of assets is owned by only 92,000 people, or 0.001% of the world's population – a tiny class of the mega-rich who have more in common with each other than those at the bottom of the income scale in their own societies.
"These estimates reveal a staggering failure: inequality is much, much worse than official statistics show, but politicians are still relying on trickle-down to transfer wealth to poorer people," said John Christensen of the Tax Justice Network.
P.S.: Based on current US census estimates, that's nearly $64,000 for every man, woman, and child in the US. And that's just the offshored stuff; you also have to add in whatever they haven't managed to hide.