A Massachusetts “millionaire’s tax” (extra 4% tax on $1M+ incomes) has earned the state more than $1.8 billion in income for fiscal 2023. That’s about double the estimates and the funds will be spent on education and transportation. https://www.wgbh.org/news/politics/2024-05-21/millionaires-tax-revenue-reaches-1-8-billion-on-pace-to-double-estimates
Millionaires tax revenue reaches $1.8 billion, on pace to double estimates

Massachusetts has collected about $1.8 billion from a voter-approved surtax on the state's highest earners through the first nine months of the fiscal year, the Department of Revenue said Monday in a quarterly report.

GBH
@kottke hopefully more states start to follow suit.