See 2017 Tax Brackets
https://taxfoundation.org/2017-tax-brackets/
On this page, you will see tax brackets from 10%-39.6 %
Also see 2017 California Tax Rates and Exemptions
The maximum rate for individuals is 12.3%
https://www.ftb.ca.gov/forms/2017-California-Tax-Rates-and-Exemptions.shtml
