If you live in Pasco County, double check your receipts. Another business was found to be charging too much in sales tax. Pasco County tax collector Mike Fasano can’t understand why there’s so much confusion.“It’s the store’s fault. It’s no one else’s fault,” he said. Stores in parts of Pasco County were found charging 8.5% sales tax instead of 7. They are in areas that share a zip code with Hillsborough County but should not be charging Hillsborough’s higher rate.