"Inequality has boomed so much in the 2020s that a 2 percent wealth tax on multimillionaires initially introduced in 2021 would yield more than twice as much revenue today." https://prospect.org/2026/03/27/billionaire-wealth-has-doubled-so-far-this-decade/
Billionaire Wealth Has Doubled So Far This Decade

An estimate of a new wealth tax proposal shows that it would generate twice as much revenue as it did when it was first introduced in 2021.

The American Prospect