So how would I go about determining whether a company I want to buy from doesn't do unethical things to avoid tax? It's everywhere and nowhere. For larger comp

So how would I go about determining whether a company I want to buy from doesn't do unethical things to avoid tax? It's everywhere and nowhere. For larger companies it's just a cost/benefit exercise - there are professionals and an industry built around making and executing these decisions. If the rewards are large enough, they'll do it. How can I, as a consumer, work out if Apple is paying the correct tax on the app payment I make in the App Store? But equally not all tax evasion is on the scale of Apple's. There is plenty going on at the other end of the spectrum. How can I, as a consumer, work out if my local window washers are paying the correct tax on their cash payments? I would argue it's virtually impossible for a consumer to establish these facts. And that's the way it should be - we ought to be able to rely on specialist agencies to enforce the rules.