Planning to retire? Here's what you need to know about taxes. 13 states don't tax retirement income at all—Alaska, Florida, Illinois, Iowa, Mississippi, Nevada, New Hampshire, Pennsylvania, South Dakota, Tennessee, Texas, Washington, and Wyoming. Additionally, 9 states have zero income tax entirely (though New Hampshire taxes dividends until 2025). If Social Security is your main income stream, you're in luck: 41 states plus D.C. don't tax it. Only 9 states do—Colorado, Connecticut, Minnesota, Montana, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. The average retiree gets around

