Download Prepared CA Tax July 1, 2011 here… Statewide Base Tax Rate Decreases from 8.25% to 7.25% Effective July 1, 2011, the one percent sales and use tax rate increase that was approved with the state budget and effective April 1, 2009, will expire lowering the statewide base tax rate from 8.25 percent to 7.25 […]