When you go to purchase something on April 1, 2009 and see that the sales tax has gone up by one percent, don't expect to hear "April Fools!" come out of the cashier's mouth. Beginning on the first day of April, as part of the state's budget, sales tax will increase by one percent throughout California. Sacramento County will now have a sales tax of 8.75 percent; Placer County and El Dorado County 8.25 percent; with the city of Placerville at 8.5 percent. San Francisco will have a 9.5 percent sales tax; Stockton will be at 9 percent. Davis, West Sacramento and Woodland will be at 8.75 percent as well, despite Yolo County being at 8.25 percent due to voter approved increases. According t