Child of a Metal God

It's unlikely — while you could certainly provide an income pro-rating for sales tax which would be a good step towards abolishing it, you can't deal with the discretionary vs. mandatory spending gap across economic classes, and you don't deal with savings in any way.  There's also the huge social economic information disclosure problem, although with sufficient technology, you could avoid that, too. (Sales tax would be paid as part of a seperate and opaque transaction, basically, which means that cash economies won't won't work, and life generally sucks)  Overall, better to not bother and just tax the fuck out of the rich on direct and indirect income, along with some nicely punitative inheritance taxes.