I'm curious where you're getting your 10% figure for states. I would expect it would be higher.
But I'd like to point out that unless the rate is higher than it needs to be for revenue neutrality, we're paying that much tax now and just don't realize it. Better to make it visible so people understand how much money governments waste. The hidden taxes have allowed the socialists to suck vast amounts of wealth from our nation and move it back into the hands of those who will support their agendas.
I'm curious where you're getting your 10% figure for states.
It comes from the table in #626, which provides effective total tax rates as % Net National Product for Federal and State tax systems. The table is extracted from the Tax Foundation's information in their paper on Tax Freedom Day calculations providing several historical data series tax statistics nationally and by state.