This guide is intended to provide you with general information regarding the collection, reporting, and paying of local and district taxes. Gov or call 1-800-829-4933.Business License Fee Calculation. County transfer tax is computed on the full value of the property. This is the total of state, county, and city sales tax rates. The cost per unit for the goods described in the non-cost information. Sales tax rate lookup and sales tax item calculator. Overview of California Taxes. California has among the highest taxes in the nation. Use tax is a companion tax to sales tax.