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Massachusetts' surtax example

Massachusetts' experience with a 4 percent surtax, which yielded $5.7 billion in revenue, cited as a precedent for Zohran Mamdani's tax proposals.

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Feb 5, 2026

Billionaires are fearmongering about California's proposed billionaire tax. Baloney. Just look at what happened when Massachusetts raised taxes on the rich.

billionaires’ alarmist claims about a proposed find a useful counterexample in , where a 4% surtax on incomes over $1 million has produced billions more than expected while critics’ forecasts of a wea...

Jan 24, 2026

How have similar city‑level millionaire or corporate tax hikes affected housing markets and business location decisions in other U.S. metro areas?

City- or state-level surtaxes on millionaires and higher corporate levies have, in past episodes, produced measurable but limited migration responses: a small number of high-profile exits and some bus...