California's 13.3% income tax does not distinguish between ordinary income and capital gain, growing to 14.4% in some cases. And California's tax collector is tough.

California’s recent push for a 5% “Billionaire Tax” has sparked a heated debate about whether the ultra-wealthy will choose to comply with the new tax or relocate to avoid it. This proposal comes amid ...

California billionaires would face a one-time 5% tax on their wealth through a ballot initiative that advocates say could bring in about $100 billion to cover state health-care costs. The proposed ...

First adopted in 2012, this version of the income tax would hit the top 2% of earners. It would produce as much as $15 ...

California’s tax climate ranks near the bottom among all 50 states, according to a new State Tax Competitive Tax Index by the Tax Foundation. California ranks 48th, ahead of only New Jersey and New ...