We need the 91% top-tier tax bracket.
We also need capital gains taxed at the same (or greater) rate as income tax.
We also need a 1-2% annual tax on registered securities, payable not in dollars, but in shares of the security. No more than 1% of total-traded volume will consist of liquidated shares. Up to $10 million worth of securities will be exempt from this tax, if held by a natural person.
