[priteau]

It's definitively not as simple as your example. Both Amazon and Google have staff and infrastructure in UK and other European countries. Yet they channel all their profit to lower tax countries (Luxembourg for Amazon and Ireland for Google).

In the case of Amazon, when some sales staff is in the UK (evidence coming from whistleblowers, for instance http://www.guardian.co.uk/technology/2013/may/16/amazon-whis...), when warehouses are in the UK, and Luxembourg seems to be used only for signing the official contract, how is that not tax avoidance?

[simonh]

Of course what they're doing isn't as simple as my example. The point is you have to construct robust, enforceable and fair rules on an international basis that catch out Google et al on the one hand BUT also don't affect companies like the one I describe. The handwavey comments along the lines of "Just make them pay tax where they sell their stuff" like the one I relied to are less than helpful in this regard.