Massachusetts Security Deposit Laws & Renter Rights
Your plain-English guide to Massachusetts's deposit return deadlines, statutory caps, itemization rules, interest requirements, and penalties for wrongful withholding — sourced from Mass. Gen. Laws ch. 186, § 15B.
State guide
Massachusetts security deposit law
Massachusetts has some of the strictest deposit laws in the country. Multiple technical requirements (separate account, written receipt, interest) — failure on any can forfeit the entire deposit.
30 days
1 month's rent
Yes — sworn itemized list of damages with receipts
Yes — 5% annually or actual interest earned
Up to 3x the deposit plus 5% interest, court costs, and attorney fees
Educational summary only — not legal advice. Statutes change; verify with the official source above or consult a tenant rights attorney before taking action.
What to do at move-out in Massachusetts
Whether you're a long-time Massachusetts renter or moving out for the first time, following the right steps protects your deposit. Here's what Massachusetts law (and common best practice) recommends:
Document the unit's condition
Take timestamped photos and a walk-through video of every room before handing over the keys. Massachusetts courts give significant weight to dated visual evidence.
Provide a written forwarding address
In Massachusetts, your landlord must send the deposit (or itemized notice) within 30 days. Sending your forwarding address in writing — and keeping a copy — starts that clock.
Request the itemized statement
Yes — sworn itemized list of damages with receipts. If you don't receive one in time, you may be entitled to your full deposit back regardless of the unit's condition.
Know the penalties
Up to 3x the deposit plus 5% interest, court costs, and attorney fees. Many landlords return deposits faster once they realize the cost of bad-faith retention.
If your Massachusetts landlord wrongfully withholds your deposit
- 1Send a formal demand letter. Cite Mass. Gen. Laws ch. 186, § 15B and the 30 days deadline. Send it by certified mail with return receipt.
- 2Give a reasonable response window. Typically 7–14 days. Many disputes resolve at this stage once the landlord realizes you understand the law.
- 3File in small claims court. Massachusetts small claims is designed for non-lawyers. Bring your photos, lease, demand letter, and any communications.
Free Massachusetts demand letter (PDF)
Pre-filled with Mass. Gen. Laws ch. 186, § 15B and the 30 days return deadline.
A formal demand letter is the single most effective free step you can take. Many Massachusetts landlords return deposits within days of receiving a letter that cites the correct statute and threatens small claims court. Fill in the fields below, then download a print-ready PDF — nothing is sent or stored on our servers.
Educational template only — not legal advice. Send by certified mail with return receipt for proof of delivery. Verify the statute citation and current return deadline on the official source linked above before mailing.
Massachusetts tenant rights resources
Free official help if your landlord won't return your deposit.
Before filing a lawsuit, most Massachusetts renters can resolve a deposit dispute by contacting their state Attorney General's consumer protection unit, getting a free consultation from a legal aid attorney, or filing a low-cost small claims case. Below are the official, no-cost resources we recommend reviewing first.
Massachusetts Attorney General — Consumer / Tenant Protection
Most state AG offices have a consumer protection division that handles landlord–tenant complaints, including wrongful deposit withholding.
Massachusetts Legal Aid & Free Tenant Help
Income-eligible renters can often get free legal advice or representation for security deposit disputes through legal aid organizations.
Massachusetts Small Claims Court
Small claims court is designed for non-lawyers. In most states you can sue a landlord for an unreturned deposit (typically up to $5,000–$10,000) for a small filing fee.
Massachusetts Statute & Tenant Handbook
Read the underlying law (Mass. Gen. Laws ch. 186, § 15B) and any official tenant handbook published by your state housing agency or AG.
External links open in a new tab. We are not affiliated with these organizations and cannot guarantee the accuracy of third-party information. Always verify with the official source before acting.
Educational summary only — not legal advice.
State statutes change. Always verify current rules with the official source linked above and consider consulting a tenant rights attorney or your local legal aid office before filing a claim.