Earlier quoted context omitted.
> As a reminder, this tax does not affect income under a million US dollars. For now. The legislature refused to add an amendment forbidding the threshold from ever being lowered to guarantee that it only applies to a million and above. The way the Washington state constitution works is income is treated as property, and property taxes must be uniform. So this bill isn't just a millionaire's tax, it's a state-wide in…
> The legislature refused to add an amendment forbidding the threshold from ever being lowered Wouldn't such a change have to be made by the same legislature with a similar majority? Or was this some sort of constitutional change that required a more qualified majority, after which the threshold can be changed more easily than this could be introduced? The WA constitution doesn't seem to have anything to say on incom…
Yes. The legislature voted on the additional language and it did not pass.
> The WA constitution doesn't seem to have anything to say on income tax, just a lot about property tax?
Washington state treats income as property, and property taxes must be uniform and flat within a specific property class.
Technically, this law does run afoul of that because having an exemption makes it not uniform, and per the state constitution property tax is capped at a total aggregate levy of 1% per year.
The state will use the argument that this is not a property tax, but an excise tax on the privilege of earning high income from the state's economy. They used a similar argument for the capital gains tax, and won in the WA supreme court.