@AvvieLanche @GodlessDoc @MeidasTouch Economically this does not hold up in a world of economic inequality. Middle and lower income households consume more as a proportion of income than upper income households. A flat 30% consumption tax would do more than the current system does to exacerbate inequality, regardless of changes to the cost of production.
It's nice to imagine that something as simple as a flat consumption tax would work to help those in need, but it is a pure fantasy.