Maine has officially joined the ranks of high-tax blue states as Democratic Gov. Janet Mills signed a controversial new millionaire tax into law, sparking immediate warnings that the move will punish local business owners and stifle investment.Effective Jan. 1, 2026, the new law bypasses traditional Republican opposition to implementing a permanent income tax surcharge as it was included in a supplemental budget bill. The legislation, titled LD 2212, allows for a 2% tax on individual incomes exceeding $1 million and $1.5 million for joint filers.It pushes Maine’s top marginal rate from 7.15% t...
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