I’m not versed on the tax plan, but from I understand the intent would be to do away with all those add ons.
This insures that everyone who is a wage earner, pays twice. They earn $100, $10.00 goes to taxes, they spend the remaining $90 on goods and services they only get $75.60 worth for their $90.
You don't understand this at all, but you need to; BADLY!
Manufacturing always passes on costs to the customer unless it is labor costs. Then they close everything down uproot entire communities and move their production to the third world. Never understood that...
Excellent article at the site will answer that for you. Good read.