The way I see it, if you make enough money to buy a nice, moderate house in California or Hawaii once per year, you are already making too much money. My cutoff would probably be closer to $2-3M... though I'd be willing to go higher if paired with an annual "wealth tax"... say, if you have a value of over - for example - $20M (incl. stocks and any other non-liquid assets) you must pay 20% of any excess value in taxes annually. That would be on top of the 95% multimillionaire income tax.