The income tax hikes are retroactive to this year. So they have to pay the increased rate on the coming tax returns.
Whatever they projected it will bring in, is probably way off. It will probably actually bring in half of whatever number they used.
Figures were based on top 3% of wage earners as of 2009.
I will venture to guess that prop 30 will affect no more than 1% by next year. People in this tax bracket have options.