Jonathan Williams and Nick Stark of ALEC write about states adopting flat taxes:

The drive for a flat tax, started by the great Steve Forbes many years ago, may have stalled at the federal level, but the idea is finding new life in the 50 โ€œlaboratories of democracy.โ€ As 46 states just kicked off their new fiscal year on July 1, and we reflect on some of the major policy changes that have transpired, it is evident that a flat-tax revolution is already underway.
In 2022, a new record of four states โ€” Iowa, Mississippi, Georgia, and Arizona โ€” have made the leap from a progressive tax on personal income to a flat tax.

Read the whole thing here.