States' economies dictate their millionaire concentrations

States with millionaire share taxes shaded in red. Massachusetts’s millionaire tax took effect 2023. Washington state’s surtax on capital gains income above $1 million in effect 2025; a 9.9% rate on all income above $1 million will take effect in 2028.
Source: IRS Statistics of Income, Tax Year 2023: Historic Table 2 and prior editions.Get the data