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The Massachusetts Landlord's Security Deposit Checklist

Panza Home Group • Greater Boston Real Estate • Landlord Resources

Massachusetts security deposit law is among the strictest in the country. A single misstep — a missed receipt, a late return, a bank account in the wrong state — can expose you to triple damages plus attorney's fees under MGL Chapter 186 § 15B. If you own or manage rental property anywhere in the Greater Boston area, this checklist is your roadmap.

Governing Law: MGL Chapter 186 § 15B — Read on malegislature.gov

⚠️ Why this matters: Under MGL Chapter 186 § 15B, a landlord who mishandles a security deposit can be required to pay the tenant triple the deposit amount plus reasonable attorney's fees — on top of returning the deposit itself. These penalties apply even when the landlord's errors were unintentional.

Whether you own a two-family in Norwood, a condo in Newton, or a multi-unit building in Canton or Needham, the requirements are the same. Work through each phase below, in order.

Phase 1: Before the Tenancy Begins

The groundwork you lay before a tenant moves in determines whether you'll have the documentation to defend a deduction claim in court — or be left with nothing to show.

1. 1 Inspection Walk the entire unit and document its condition in detail. Photograph every room — aim for at least 20 photos per standard room and 50 photos for kitchens and bathrooms. Timestamped photos stored in the cloud give you court-ready evidence.
   Practice tip: Document before showing, not just before move-in
2. 2 Repairs Address every maintenance issue you can find before listing the unit. This protects you legally and reduces the likelihood of disputes about pre-existing conditions.
3. 3 Conditions Statement Prepare a written statement of the unit's condition and include it in the lease packet for the tenant to review and sign. Under Massachusetts law, the tenant has 15 days from the start of the tenancy to object to anything on the statement. Any item not objected to is legally presumed to have been in perfect working order.
   MGL Ch. 186 § 15B — Conditions Statement requirement

Phase 2: At the Start of the Tenancy

Once the lease is signed and keys are handed over, you have a narrow, legally defined window to handle the security deposit properly. Missing either of the steps below is a common and costly mistake.

4. 4 Collect & Receipt Collect the security deposit at or before move-in and issue a written move-in money receipt immediately. The receipt must include the amount, the date, and the address of the rental unit. Keep a copy for your records.
   MGL Ch. 186 § 15B(2)(b) — Receipt required at time of collection
5. 5 Bank Deposit — 30-Day Deadline Within 30 days of receiving the security deposit, you must place it in a separate, interest-bearing account at a Massachusetts bank. The account must be maintained in the name of the tenant and cannot be commingled with your personal or business funds. After depositing, issue a written security deposit receipt to the tenant that includes the bank name, branch address, and account number.
   MGL Ch. 186 § 15B(3)(a) — Separate MA bank account required within 30 days

Phase 3: Annual Obligations During the Tenancy

The landlord's obligations don't pause once the tenant is settled in. Each calendar year you must fulfill two recurring requirements or risk forfeiture of your right to retain the deposit at all.

6. 6 Pay Annual Interest Every year, you must pay the tenant the interest earned on their security deposit, calculated at the rate of 5% per year — or the actual interest earned, whichever is greater. You may deduct outstanding rent owed before remitting payment, but you must do so in writing.
   MGL Ch. 186 § 15B(3)(b) — Annual interest payment required
7. 7 Annual Statement Alongside the interest payment, provide the tenant with a written annual statement confirming the bank name, address, account number, and the amount currently held in the account.
   MGL Ch. 186 § 15B(3)(c) — Written statement required annually

Phase 4: Within 30 Days After Move-Out

This is where most security deposit disputes arise. Massachusetts law is strict: you have exactly 30 days from the date the tenant vacates to settle up — no extensions, no exceptions. Every step below must be completed within that window.

8. 8 Pay All Accrued Interest Calculate and pay all interest that has accrued on the deposit through the date the tenancy ended. Interest cannot be deducted to offset the cost of repairs — it must be returned to the tenant separately.
   MGL Ch. 186 § 15B(4)(iii)
9. 9 Itemized Damage Statement (if applicable) If you intend to make any deductions, you must provide the tenant with a written, itemized statement listing each specific damage claimed, along with the actual repair receipts or written cost estimates. Vague descriptions ("cleaning fee," "general repairs") are not sufficient under the law.
   MGL Ch. 186 § 15B(4)(iii) — Receipts required for all deductions
10. 10 Return the Balance Return the remaining deposit — minus any lawful, documented deductions — together with the accrued interest. Normal wear and tear is never a valid reason to withhold any portion of the deposit.
    MGL Ch. 186 § 15B(4) — 30-day return deadline

Phase 5: If There's a Dispute

11. 11 Contact an Attorney First Before you make any decisions about withholding or reducing the amount you return, speak with a Massachusetts landlord-tenant attorney. Tell them exactly how much you have, what deductions you're considering, and what documentation you hold. If they advise you to return the full deposit, do it. A full, timely return — even when you believe you have a valid claim — may be the right financial decision once legal exposure is weighed against the cost of litigation.

A Note on Penalties

Under MGL Chapter 186 § 15B, if a court finds that you willfully withheld a security deposit in violation of the law, the tenant may be entitled to three times the amount wrongfully withheld, plus reasonable attorney's fees and court costs. This applies even if the original amount at issue was small. The best defense is strict compliance — every step, every time.

Frequently Asked Questions

Can a Massachusetts landlord charge more than one month's rent as a security deposit?
No. Under MGL Chapter 186 § 15B, the security deposit cannot exceed the equivalent of one month's rent, regardless of the lease term or the tenant's credit history.

What happens if a landlord fails to deposit the funds in a Massachusetts bank within 30 days?
Failing to comply with the banking requirement gives the tenant the right to demand an immediate return of the full deposit. If the landlord refuses, the tenant may pursue legal action and recover up to triple the amount plus attorney's fees.

Does normal wear and tear justify a deduction from a security deposit in Massachusetts?
No. Normal wear and tear — faded paint, minor scuffs, worn carpet from regular use — is expected and cannot be charged against the tenant's deposit. Only damage beyond ordinary use, with supporting documentation, qualifies as a lawful deduction.

What if the landlord sells the property during the tenancy?
The seller must transfer the security deposit — along with all accrued interest and documentation — to the buyer, and notify the tenant in writing within 45 days of the transfer. The new owner assumes all obligations under MGL Ch. 186 § 15B.

Is interest always required on a Massachusetts security deposit?
Yes. Massachusetts landlords are required to hold security deposits in an interest-bearing account and pay interest to tenants annually, as well as at the end of the tenancy.

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