[endorphone]

I remember visiting Italy and we were warned repeatedly to always take and keep receipts, even if just getting a gelato -- that after the transaction the police could demand it, with punitive measures if you don't have it. This system was to ensure that shopkeepers were actually keeping receipts.

The GST/HST system in Canada sort of serves the same purpose. It is an overarching tax system that seems redundant in that every business then can claim back every bit of GST they've paid out. But to do so you have to have receipts for everything, from every source, and when they randomly do an audit they aren't checking you as much as they're building a profile of every other business you interacted with.

Tax avoidance is a problem in every country.