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Security Deposits in Massachusetts: The Complete Rules — and How to Get Yours Back

Under 1 min read
July 17, 2026
THE BOTTOM LINE

MA security deposits are capped at one month's rent, must sit in a separate MA interest-bearing account, and must be returned within 30 days — or the landlord can owe triple damages.

WHO NEEDS THIS

Any MA tenant paying, holding concerns about, or trying to get back a security deposit.

KEY INSIGHTS
  • Deposit capped at 1 month's rent under M.G.L. c. 186 §15B
  • Must be held in a separate MA interest-bearing account within 30 days
  • Must be returned within 30 days of move-out, itemized if deductions apply
  • Violations can trigger treble (3x) damages plus attorney's fees
DO THIS NEXT

Request your bank-account notice and statement of condition in writing if you never received one.

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