If you are wondering how they avoid tax avoid no more. Here are thre experts explaining it some better than others.
The 12th of November was a day of unusually entertaining political theatre at Westminster.
Three executives from large multinational corporations were ritually flagellated by Parliament's Public Accounts Committee as penance for the alleged tax sins of their employers.
Starbucks' head of finance, Troy Alstead, was forced to portray his company as a perennial commercial flop, in order to account for its peculiar failure to record a taxable profit in the UK for 14 out of the last 15 years.
He was followed by Amazon's Andrew Cecil, who was reduced to stuttering when he was accused of being "pathetic" for his inability to disclose something as basic as how much of his firm's European sales came from the UK last year.
Last up was Google's Matt Brittin. In contrast to his two peers, Mr Brittin did not seek to evade or apologise.
Yes, of course Google minimises its tax bill, by operating in Bermuda and Ireland, he said. Google had a duty to its shareholders to minimise its costs. And besides, the UK still benefited from Google's many free products, not least its search engine, which were engineered by thousands of employees in California.
But although Mr Brittin acquitted himself best by virtue of sheer bravado, was his confidence justified?
Why do major insurance companies have offices in one of the tax havens?