It'll be interesting to see the court cases play out for this, and what the long-term effects will be -- both in switching WA to a more progressive tax scheme, and in the effects of a city implementing a tax like this (assuming Seattle prevails in court).

Seattle (and more broadly WA) taxes are all kinds of strange.

As someone said: isn't weird we have the two wealthiest people in the world here, but can't afford schools?