I currently live in CA and have considered moving to WA. The reasons are many, but one of the financial reasons is that there is no state tax. However, there is "Business and Occupation Tax Rate" potentially based on gross proceeds. Do traders have to pay this tax, and is it based on gross proceeds as reported on the broker 1099 or rather than gross profit? If I have to pay a B&O tax and it's based on gross proceeds, that could be a deal breaker. Thanks for any insight!