Security Deposit Laws in Massachusetts
How long does a landlord have to return a security deposit in Massachusetts?
Under Mass. Gen. Laws ch. 186, § 15B, a landlord in Massachusetts has 30 days after you move out to either return your full security deposit or provide an itemized statement of deductions along with any remaining balance.
Important Massachusetts-specific details
One of the strictest security deposit statutes in the US. Many technical requirements on landlords.
What happens if the landlord misses the deadline in Massachusetts?
Missing the deadline has real consequences for landlords in Massachusetts. Under the statute, the penalty is: 3x the deposit plus interest, court costs, and attorney's fees.
In practice, this means if your landlord doesn't return the deposit (or a proper itemized statement) within 30 days, you likely have a strong case in small claims court.
What can the landlord legally deduct from your deposit in Massachusetts?
Massachusetts law generally allows landlords to deduct for:
- Unpaid rent
- Damage to the unit beyond normal wear and tear — holes in walls, broken fixtures, stains, pet damage
- Cleaning costs, if the unit is left noticeably dirtier than at move-in
- Breach-of-lease costs, such as early termination fees where legally permitted
Landlords cannot deduct for normal wear and tear — faded paint, worn carpet from regular use, minor scuffs, or small nail holes from hanging pictures.
Calculator: check your deposit situation
Enter your move-out date and deposit amount below to see exactly when your landlord's deadline is — and whether they've already missed it.
Security Deposit Return Calculator
Find out when your landlord must return your deposit and what they're legally allowed to deduct.
What to do if your landlord won't return your deposit in Massachusetts
- Send a demand letter by certified mail. Cite Mass. Gen. Laws ch. 186, § 15B and the amount owed. Keep a copy and the delivery receipt.
- Give the landlord a reasonable response window — typically 7 to 14 days after the demand letter.
- File in small claims court. In most states you can sue for up to $5,000–$10,000 without a lawyer. Filing fees are usually $30–$75 and often recoverable as costs.
- Bring evidence. Lease, move-in and move-out photos, the demand letter, proof of delivery, and any communications with the landlord.
For a complete walkthrough, see our guide: What to Do If Your Landlord Won't Return Your Security Deposit.