A 15% Transactional Tax on everything instead of most other taxes

ON REFLECTION THIS TAX WOULD MORE LIKELY BE 2.5-5% DUE TO IT'S CUMULATIVE NATURE THROUGH THE SUPPLY CHAIN. This would take over almost every other direct tax (income, gst, company etc etc). With this type of tax the majority of people would pay a lot less tax but the people using avoidance tactics would be made to pay their share. This tax would be on every transaction: Wages, Purchases (including house purchases & imports), Bonuses, Interest, Owner drawings, inheritance, even donations should be included so companies couldn't use that to bypass the laws. There would be no exemptions, reductions, claiming back or any version of avoidance. Money only has value once it's spent. No entity would be able to get around it. Churchs, religious & charitable entities are supposed to want to help the community so there's no need for them to be exempt. If everyone pays their fair share there should be more money to go around & the total Government revenue would increase to cover social requirements (of which there are many)