something similar was stated in the original post#1, but based on income.First I'm not sure the application of your proposal would be that easy. What to your mind would the actual method of collection be? A lump sum at the end of each fiscal year?
And I do believe any consumption tax would be regressive if you don't have a "prebate" involved. Canada does that based on taxable income, but again it takes a huge bureaucracy to administer it. I still like the idea in the "FairTax" proposal of the old Libertarian Party where the government would just send out a prebate check to everyone, slum dweller and Warren Buffet included.
The other thing that would be needed IMO for a consumption type tax to be fair(er) is to class financial transactions of all types as being consumption activities. Those things would partially compensate for the otherwise regressive nature of a straight consumption tax.