Effective April 1, 2009, but unfortunately not an April Fool's Day joke is a 1% rate increase to California's sales tax, for a new total of 8.25%. In addition, certain cities and localities may add an additional surcharge of up to 2.0%, for a grand total not to exceed 10.25%, among the highest sales tax rates in the nation. Los Angeles County's rate is now 9.25%.
More detailed information is provided in this notice issued by California's sales tax authority, the Board of Equalization (CA "BOE").
California Legislature Plans to Increase Taxes Amid Recession