An interesting thought exercise, but you use the term "supplier" as if it isn't itself a business.
And while I see what you're trying to get at, I think the idea is flawed. Taxed being "open and transparent" are good attributes, but not the reason, for taxes to exist. They exist to fund society.
Corporations and businesses, as entities, utilize public services. They wear roads, they take up land, they pollute. They should be expected to pay their portion of the upkeep to their local area.
I understand the idea of reducing the race to the bottom and city/country gamesmanship for tax evasion... which is what the linked proposal looks to solve AFAIK.
They do pay a portion though, through payroll taxes and their employee's income taxes. They also pay property taxes and shareholders pay capital gains taxes. I'm sure there are even taxes I am forgetting about. This is only talking about the tax on corporate profits.
And while I see what you're trying to get at, I think the idea is flawed. Taxed being "open and transparent" are good attributes, but not the reason, for taxes to exist. They exist to fund society.
Corporations and businesses, as entities, utilize public services. They wear roads, they take up land, they pollute. They should be expected to pay their portion of the upkeep to their local area.
I understand the idea of reducing the race to the bottom and city/country gamesmanship for tax evasion... which is what the linked proposal looks to solve AFAIK.