Amending the Massachusetts (state) Constitution is a lengthy process, requiring the House and Senate to pass legislation several times in concurrent sessions. The following bill has been approved by both the House and the Senate in 2019. It must still be passed by the next General Court in the 2021 session, and then passed by Massachusetts voters at the ballot box in 2022 in order to become law.

Fair Share Amendment, seeks to amend the Massachusetts Constitution to place an additional 4% tax on annual taxable income in excess of $1 million.