And many sellers are confused or using the change as an opportunity. I won an Ebay bid last week for an item and the seller added 9.5% sales tax as they are in Oakland, CA. I messaged them that my states sales tax is 5.25% and they said they now have to charge 9.5. I also called a place in Seattle to order some parts today and they were going to charge me 9.6% tax. I told them my state has 5.25% state sales tax and they told me they were required to charge the local tax. When I told them I would pay 5.25% but not more they politely declined my business.