Every time people say "What's the problem if they're obeying the law?"<p>These companies are using very complicated schemes, bought from well funded well staffed multinational accountancy companies (any single one of the big four has more staff in an off shore tax haven than the HMRC has in total). Don't forget that law consists both of statute and case law - a bunch of this stuff has never been before a judge so we don't know if it's legal or not.<p>These schemes are not normal tax planning. While they're not tax evasion (use of clearly illegal methods to not pay tax) they're borderline, and may not actually be legal. For these schemes to be legal requires a suspension of disbelief - for example, Starbucks doesn't make any profit in the UK[1]. (Baffling if you've ever bought a £4 coffee.)<p>Forensic accounts investigation is complex, time consuming, and expensive. It's not surprising that overworked under funded understaffed tax offices can't spare the resources to investigate companies who are trying to obfuscate their tax arrangements. When companies are caught they negotiate deals to repay some, but not all, of the tax. Not paying your tax and risking getting caught is just a cost of doing business.[2]<p>A company using English staff, in English offices, to sell English products to English staff working for other English companies, using English money through English banks should probably be paying tax in England, even if the company have arranged for someone in an Irish office to sign a bit of paper at the end of the chain.<p>And we've got ourselves into this weird situation. The big four firms lend staff to HMRC to help draft tax law. The big four firms then use their inside knowledge of these laws, that they helped to draft, to create schemes on the edge of legality[3ab].<p>What I'm gently worried about is an employee of Google (apparently from an accounts department but maybe I got that wrong) siphoning off 100,000 emails, and keeping them for <i>years</i> before coming forward. That feels like a significant fail, but I have no idea of the law around that kind of thing. I trust that Google has much tighter controls around user data.<p>[1] (<a href="http://www.independent.co.uk/news/uk/home-news/starbucks-is-right-not-to-pay-uk-tax-because-it-makes-no-profit-says-coffee-chains-tax-advisor-8589459.html" rel="nofollow">http://www.independent.co.uk/news/uk/home-news/starbucks-is-...</a>)<p>[2] (<a href="http://www.guardian.co.uk/politics/2011/dec/20/inland-revenue-sweetheart-tax-deals" rel="nofollow">http://www.guardian.co.uk/politics/2011/dec/20/inland-revenu...</a>)<p>[3a] (<a href="http://www.ion.icaew.com/TaxFaculty/26745" rel="nofollow">http://www.ion.icaew.com/TaxFaculty/26745</a>)<p>[3b] (<a href="http://www.guardian.co.uk/business/2013/apr/26/accountancy-firms-knowledge-treasury-avoid-tax" rel="nofollow">http://www.guardian.co.uk/business/2013/apr/26/accountancy-f...</a>)