I seldom pay any shipping charges listed as such. I keep looking until I can get it shipped for free. Yes, I might pay a little bit more for the item, but it will say shipping is FREE!!! Even on eBay I keep looking for the item where the shipper pays the shipping charge. In this case, it would be cheaper for me to pay $6 for the item with free shipping than it is to pay $3.50 with outrageous shipping charges. For this reason, I’ve never noticed that eBay charges tax on shipping. That might be eBay’s way of making extra money. They charge you taxes on shipping & then pays taxes just on the item. You might contact your local state tax department & ask them IF it’s legal to charge taxes on shipping.
Did a little bit of research on this & the Washington State Salex Tax Handbook 2020 states that…
In the state of Washington, the laws regarding tax on shipping and handling are very simple. If the item being shipped is taxable in itself, then the shipping charge is considered taxable.
If the item being shipped is not considered taxable, then the shipping charge is not taxable. If you are shipping multiples items, both taxable and nontaxable items, then you should have two shipping charges fairly divided between the taxable and nontaxable pieces of merchandise, based on the percentage of the charge that is applied to the taxable items. It must also be noted that any shipping and handling charges that are made after the buyer has received the receipt of the goods are exempt from taxes.