However, if we were to use Warren's proposal, our lucky millionaire would be unaffected, because it doesn't kick in until $50mm. (A happy coincidence.)
If I run the numbers again, using a very lucky millionaire with $100mm in assets, it comes out as follows:
1. Warren wealth tax: $2,613,000 yearly spending power
2. CA wealth tax: $2,939,000 yearly spending power
3. No wealth tax: $3,104,000 yearly spending power
Warren's proposal is much more aggressive about leveling wealth inequality, especially considering that it jumps to 6% for billionaires. I'm not convinced it was a serious proposal, though, given that it was part of Warren's campaign rhetoric. I think she's serious about a wealth tax, but I suspect the specific proposal was a starting point in the bargaining process—an attempt to shift the Overton window, if you will—not the expected outcome.