State of Massachusetts allows a certain amount of interest from Mass banks to be exempt from income
Massachusetts bank interest is literally interest that you get paid from a bank or other institution that is located in Massachusetts.
Back when banks were not nationwide, this made a lot of sense and was easy, but now it is very convoluted. When you look at the chart below you will see it can even include pawnbroker interest if the pawnbroker was in Mass.
Basically, if the bank has a branch or even an ATM in Mass, you can claim Mass Bank Interest if they paid you interest on an account you have there.
The Department of Revenue has had to make a nifty chart to help people figure out what is and is not a "bank." It is very long, but helpful so I will attach the link.
I tried the link to the Department of Revenue, but it was cut off on screen and sent me only to the main page, where I tried to but couldn't find the information. Can you resend the full link?
(A) Interest and dividends from savings deposits, including term and time deposits having a principal amount of less than one hundred thousand dollars, savings accounts, share or share savings accounts in any savings or cooperative bank, trust company or credit union incorporated in or chartered by the commonwealth; in any national bank, federal savings and loan association, federal savings bank or federal credit union located in the commonwealth; in any banking company or Morris Plan company subject to chapter one hundred and seventy-two A; in any savings or loan association or banking partnership under the supervision of the commissioner of banks.
Effective for taxable years beginning on or after January 1, 2024, the deduction previously allowed for a deduction of up to $100 ($200 for joint filers) of interest from Massachusetts banks is repealed.