Quick AnswerMassachusetts has some of the strictest security deposit rules in the country (M.G.L. c.186 § 15B). At move-in a landlord may collect only first month's rent, last month's rent, a security deposit of no more than one month's rent, and the cost of a new lock and key — nothing else. The deposit must sit in a separate interest-bearing Massachusetts bank account, with a receipt to the tenant within 30 days, a written statement of condition within 10 days, and a sworn, itemized return within 30 days of move-out. Core violations carry treble damages plus attorney's fees. A landlord also may not charge a late fee until rent is 30 days late.
Massachusetts is a landlord-compliance minefield: the security deposit statute (M.G.L. c.186 § 15B) is detailed, unforgiving, and backed by mandatory treble damages, so many experienced landlords choose not to take a deposit at all. This guide walks through every clause, figure, and notice a Massachusetts landlord should build into a compliant 2026 lease. For the national baseline, see What Every Residential Lease Agreement Must Include.

What clauses are legally required in every Massachusetts lease agreement?

Every Massachusetts lease should identify the landlord/agent and all adult tenants, the property, the rent and due date, and the term. Because § 15B strictly limits move-in charges and voids many common lease clauses, the drafting rules matter as much as the content:

  • Allowable move-in charges only: at or before the start of the tenancy a landlord may collect just four things — first month's rent, last month's rent (at the same rate), a security deposit of no more than one month's rent, and the cost of a new lock and key. No application, amenity, cleaning, move-in, or upfront pet fees are allowed (§ 15B(1)(b)).
  • No pre-30-day late fee: a lease may not impose interest or a penalty for late rent until the rent is 30 days overdue (§ 15B(1)(c)); a clause that tries to is void.

Massachusetts security deposit rules — separate account, statement of condition, and returns

If a landlord does take a deposit, § 15B imposes a precise sequence:

RuleRequirementStatute
CapNo more than 1 month's rent§ 15B(1)(b)
Where heldSeparate, interest-bearing account in a Massachusetts bank; not commingled with the landlord's funds§ 15B(3)
ReceiptWithin 30 days: bank name and address, amount, date received, and account number§ 15B(3)
Interest5% per year (or the actual lesser amount the bank paid), payable annually if held a year or more§ 15B(3)
Statement of conditionA separate signed statement of the unit's condition within 10 days of the tenancy starting (or the deposit being received)§ 15B(2)(c)
ReturnWithin 30 days of move-out, with a sworn (penalties-of-perjury) itemized list of deductions and supporting evidence§ 15B(4)

Penalties: failing to hold the deposit in a proper separate account or wrongfully withholding it (or failing to give the sworn itemized statement) triggers mandatory treble damages plus attorney's fees and 5% interest (§ 15B(6)–(7)). Missing the receipt, interest, or statement of condition generally forfeits the landlord's right to keep any of the deposit. For a multi-state comparison, see security deposit rules every landlord must know.

Late fees and rent rules in Massachusetts

Massachusetts bars any late fee or interest on late rent until the rent is 30 days overdue (M.G.L. c.186 § 15B(1)(c)). A lease provision imposing an earlier penalty is void. Note that this is separate from eviction: a landlord may serve a 14-day notice to quit for nonpayment as soon as rent is late, even though a late fee cannot be charged until day 30.

Notice periods to end or not renew a Massachusetts lease

To end a tenancy at will, either party must give written notice equal to the longer of one full rental period or 30 days (three months if rent is payable at intervals longer than three months), and the termination date must fall on a rent-due day (M.G.L. c.186 § 12).

For nonpayment, the landlord serves a 14-day notice to quit (M.G.L. c.186 § 11 for a term, § 12 for a tenancy at will). A tenant at will who has not received a similar notice in the prior 12 months may cure by paying all rent due within 10 days. Since April 1, 2023, a notice to quit must include the state-mandated accompanying form with rental-assistance information. Self-help eviction is unlawful.

What disclosures must Massachusetts landlords provide?

Massachusetts requires a robust set of disclosures:

  • Lead paint: the federal disclosure for pre-1978 housing, plus the Massachusetts Tenant Lead Law Notification package (notification, Property Transfer Notification form, and any inspection or compliance records), which must be given to every prospective tenant of pre-1978 housing — not only when a child under six is present (M.G.L. c.111 § 197A).
  • Deposit and last-month receipts and the statement of condition (see above) are themselves required written disclosures (§ 15B).
  • Insurance disclosure: if the landlord carries fire/casualty insurance, on the tenant's written request the landlord must disclose the insurer and coverage within 15 days (M.G.L. c.186 § 21).
  • Notice-to-quit accompanying form for evictions since April 2023.

What happens if a Massachusetts lease is missing required terms?

Massachusetts penalizes deposit missteps harder than almost any state:

  • Improper account or wrongful withholding: mandatory treble damages plus attorney's fees and 5% interest (§ 15B(6)–(7)).
  • Missing receipt, interest, or statement of condition: the landlord forfeits the right to retain any part of the deposit.
  • Over-collecting at move-in or an early late-fee clause: void and recoverable by the tenant.

Because the exposure is so high, many Massachusetts landlords simply collect first and last month's rent and skip the security deposit entirely.

Managing rentals in more than one state? Compare Massachusetts's rules with our New York and New Jersey lease requirement guides.

Full Massachusetts disclosure checklist

For a dedicated, statute-by-statute rundown of every notice a Massachusetts landlord must give at signing, see our Massachusetts required lease disclosures checklist.

A compliant Massachusetts lease respects § 15B to the letter: only four allowable move-in charges, a one-month deposit in a separate interest-bearing account, a receipt within 30 days, a statement of condition within 10 days, a sworn itemized return within 30 days, and no late fee until rent is 30 days overdue — all backed by mandatory treble damages. LeaseHelper generates a Massachusetts-specific lease that keeps these requirements straight so a small paperwork slip doesn't turn into a treble-damages judgment.

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Frequently asked questions

What is the maximum security deposit in Massachusetts?

One month's rent. At move-in a landlord may collect only first month's rent, last month's rent, a security deposit of no more than one month's rent, and the cost of a new lock and key — no other upfront fees are allowed (M.G.L. c.186 § 15B(1)(b)).

How must a Massachusetts landlord hold the security deposit?

In a separate, interest-bearing account in a Massachusetts bank, not commingled with the landlord's funds. The landlord must give the tenant a receipt within 30 days (bank name/address, amount, date, and account number) and pay 5% annual interest if the deposit is held a year or more (M.G.L. c.186 § 15B(3)).

How long does a Massachusetts landlord have to return a security deposit?

Within 30 days of the tenancy ending, with any deductions itemized in a statement signed under penalties of perjury and supported by receipts or estimates (M.G.L. c.186 § 15B(4)). Wrongful withholding can trigger treble damages plus attorney's fees.

When can a Massachusetts landlord charge a late fee?

Not until the rent is 30 days overdue. A lease clause imposing a late fee or interest before then is void (M.G.L. c.186 § 15B(1)(c)). A 14-day notice to quit for nonpayment can still be served as soon as rent is late.

What is the statement of condition in Massachusetts?

A separate written statement describing the condition of the unit that the landlord must give the tenant within 10 days of the tenancy starting or the deposit being received. It is the baseline for any later deposit deductions (M.G.L. c.186 § 15B(2)(c)).

Official sources

Primary statutes and official government references for this guide. Statutes change — always confirm against the current official text before you act.

This article provides general information about Massachusetts lease agreement requirements and landlord-tenant law and is not legal advice. The security deposit statute (M.G.L. c.186 § 15B) is technical and strictly enforced, and cities like Boston and Cambridge add local rules. Verify current statutes before acting, and for complex situations consult a licensed Massachusetts attorney. Last reviewed: July 2, 2026.