This is where the capital gains tax idea will be presented.
In 2019, Governor Inslee proposed a state capital gains tax of 9 percent on capital gains of more than $25,000 for single filers and $50,000 for individuals filing joint returns. Retirement accounts and residential real estate was excluded. This was estimated to impact only 42,000 taxpayers while raising $1B annually. Based on a simple extrapolation from its percentage of state population, this would raise $100M in Seattle.