We have progressive taxes today, and the only people working under the table are predominantly the poorest, who cannot afford taxes and have less to lose. The r

We have progressive taxes today, and the only people working under the table are predominantly the poorest, who cannot afford taxes and have less to lose. The richer you are, the more you have at risk getting caught for tax evasion, and the less likely you are to do it, until you get so rich and the amount lost in evasion so lucrative you can offset the risk by buying politicians, courts, and police while also writing the laws and having significant fail-safes protecting your money laundering. But that would happen anyway. If you are taxing the ultra-rich period, at almost any % of income, there are strong incentives when the taxable total is in the millions or billions to evade taxes.