Do you have to pay sales tax when purchasing a used car from a private party seller in Washinton State?

Sales Tax. No you do not. Sales tax is what businesses use to pay to the state. It's the "state's share" on a taxable item. A private party seller is not a business, so legally they cannot charge a...

I think the answer is yes. Check out the sales tax section here: http://www.800helpfla.com/usedcar_text.html

Absolutely, although the process is slightly different than in a normal transaction in it is collected when you register or title the vehicle.If the amount you claim the purchase was for is different...

Yes. You will pay them when you register the car at the DMV. Pretty lame. Double taxation.

No you don't pay taxes to an individual, only a dealer. You will pay the sales tax at the dmv when you go to register the vehicle.