No state income tax on CA lottery ticket winners. He will have $600,000+. Barry “The Mountain Renamaer” Obama will get his cut.
If he is single:
$119,996.25 plus 39.6% of the amount over $413,200
If married:
$129,996.50 plus 39.6% of the amount over $464,850
So his tax will be in the $350K region, and he will keep $650K. This example disregards his other income.