Massachusetts Retirement Tax Guide 2026: 5% Flat Rate, Millionaire Surtax & Social Security Exemption
Massachusetts has a reputation as a high-tax state, but its retirement tax picture is more nuanced than the headlines suggest. With a 5% flat income tax rate (plus the 4% “millionaire surtax” on income over $1 million), full Social Security exemption, and a generous treatment of public pensions, the Bay State sits in the middle…