You can't escape taxes, even when you use your coins to obtain goods and solutions. If you're some who pays your taxes in the uk, it is very obvious that by now you've received some letter or some kind of notification from the HMRC telling you which you are in possession of a new tax code. Aside from assisting you to determine the quantity of taxes that you're supposed to pay, in addition, it says something about the quantity of tax-free personal relief which you're entitled to, and any other benefits like the allowances for the elderly, the blind, etc.