Piketty's proposal is a wealth tax. That's the subject of my previous post. I agree income taxes are progressive. Tt's just that very wealthy people don't pay

Piketty's proposal is a wealth tax. That's the subject of my previous post. I agree income taxes are progressive. Tt's just that very wealthy people don't pay them by virtue of not having any taxable income (they of course have tremendously large incomes, but our tax code doesn't consider their income taxable). Thus our tax system effectively falls off at the top end: the overall tax burden decreases after say $50-100M and continues to fall from there. If you are really wealthy you can entirely avoid income tax rather easily, as Trump and Bezos demonstrate for us quite regularly. The point is that income tax's progressivity is ineffective when your richest people don't have income, which is why you need a wealth tax to fill the gap. The Piketty proposal I mentioned is designed to target this tax specifically at the gap: that is, people will very large amounts of wealth.