You are correct. Consumption taxes are, in effect, tariffs on commerce. Theoretically, you should try to push these down as much as possible, so that money flow

You are correct. Consumption taxes are, in effect, tariffs on commerce. Theoretically, you should try to push these down as much as possible, so that money flows between economic actors with as little burden as possible. A "solution" to the economic burden of income taxes that increases the overhead cost of transactions and encourages hoarding of money is not a solution at all.