Free Massachusetts Security Deposit Return Letter

A Massachusetts security deposit return letter is the written accounting a landlord delivers with the deposit refund, or with the sworn explanation of what was withheld, at the end of a tenancy. Under M.G.L. c.186 s.15B, the landlord must return the deposit or its balance, together with any interest owed, no later than 30 days after the tenancy ends, and any deduction for damage must appear on an itemized list sworn under the pains and penalties of perjury with receipts attached. Our Massachusetts security deposit laws guide covers the wider framework, and the tenant screening laws by state hub helps you place tenants who leave the unit clean in the first place.

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Video: a plain-language walkthrough of the Massachusetts deposit return letter – the 30-day deadline, the sworn itemized list, the interest owed, and the three-times-the-deposit penalty.

Generate Your Massachusetts Return Letter

Complete the form below to build a return letter ready to print, sign, and send by certified mail. Fill in the deposit math, add any interest owed to the tenant, itemize each deduction with a specific description, and the generator adds the deposit to the interest, subtracts the itemized deductions, and calculates the refund balance owed to the tenant automatically. If the deductions exceed the deposit and interest, it flips to show the additional balance the tenant owes. Every figure you enter flows straight into the PDF letter, and you can review the running total on screen before you generate.

How Massachusetts’s 30-Day Deposit Rule Works

Massachusetts runs one of the strictest security deposit statutes in the country, and the return runs on a firm 30-day clock. Under M.G.L. c.186 s.15B, subsection 4, the landlord has no more than 30 days after the termination of the tenancy to return the deposit or any balance of it, together with any interest owed to the tenant. If the landlord withholds any part of the deposit for damage, that same 30-day window is the deadline to deliver an itemized list of damages sworn under the pains and penalties of perjury, with written evidence attached. The 30-day period is not a target to aim for; it is the outer limit, and missing it is the single most common way a Massachusetts landlord turns a routine move-out into a treble-damages judgment.

The clock starts when the tenancy ends, meaning the termination of the tenancy-at-will or the end date fixed by a valid written lease, and the practical trigger is the tenant surrendering possession of the unit. The defensible practice is to capture the forwarding address at move-out, ideally during the walk-through, and to begin the deduction accounting immediately so that the sworn list, the receipts, and the refund check are finished, printed, and in the mail well before day 30. If the tenant never provides a forwarding address, mail the statement and any refund to the last address known to the landlord, which is typically the rental unit itself.

What the Massachusetts Return Letter Does

The return letter is the document that proves the landlord did the accounting the statute requires. Under M.G.L. c.186 s.15B, when a landlord withholds any part of the deposit, the sworn itemized statement must describe in precise detail each item of damage and the repair it required, and the landlord must return the balance of the deposit, plus interest, that remains after those lawful deductions. The letter ties the deposit decision to a written, sworn record the landlord can later produce if the tenant carries the dispute into court.

The document does three things at once. It satisfies the statutory duty to communicate the deposit decision in writing within the deadline. It gives the tenant a concrete accounting, sworn under oath, to review and, if warranted, to dispute line by line. And it creates a contemporaneous record that answers a later challenge to the deductions. Without a properly sworn and delivered letter, even legitimate deductions are exposed, because a landlord who cannot show a timely, sworn, itemized statement has a weak position when the tenant claims the full deposit back and asks the court for the treble penalty on top.

The Sworn Itemized List of Damages

The sworn itemized list is what sets Massachusetts apart from almost every other state. Under M.G.L. c.186 s.15B, subsection 4, a landlord who keeps any part of the deposit for damage must, within 30 days, furnish the tenant an itemized list of damages sworn to by the landlord or the landlord’s agent under the pains and penalties of perjury. The list must itemize, in precise detail, the nature of the damage and of the repairs necessary to correct it, and it must be accompanied by written evidence, such as estimates, bills, invoices, or receipts, indicating the actual or estimated cost. A generic “cleaning and repairs” line will not satisfy this; the statute demands specificity and documentation, and the landlord signs the list under oath.

The consequence of skipping the sworn list is severe. A landlord who fails to furnish it within 30 days forfeits the right to retain any portion of the deposit, meaning the entire deposit becomes returnable even if real damage occurred. Swear the list, attach the receipts, and mail it inside the 30-day window; there is no cure for a sworn list delivered late.

The Separate Interest-Bearing Account and Five Percent Interest

Massachusetts controls not just how the deposit is returned but how it is held throughout the tenancy. Under M.G.L. c.186 s.15B, subsection 3, the landlord must place the deposit in a separate, interest-bearing account in a bank located within the commonwealth, and the funds must be kept out of reach of the landlord’s creditors. The tenant is entitled to a receipt that names the bank and the account number. The tenant earns interest of five percent per year, or the lesser amount actually received from the bank where the deposit is held, payable at the end of each year of the tenancy and again when the deposit is returned.

The interest matters at return time because it is added to the deposit before deductions are subtracted. The return letter should state the deposit figure and the interest figure separately, then show the deductions and the resulting balance, so the tenant can trace every dollar. Our Massachusetts security deposit laws guide walks through the account and interest rules that govern the deposit from the day it is collected.

The Treble-Damages Penalty and What Triggers It

The penalty is what gives the 30-day clock its teeth, and Massachusetts draws its lines carefully. Under M.G.L. c.186 s.15B, subsection 7, the tenant is awarded three times the amount of the security deposit or the balance to which the tenant is entitled, plus interest at five percent from the date the payment became due, together with court costs and reasonable attorney’s fees. Subsection 7 ties the treble penalty to three specific failures listed in subsection 6: failing to hold the deposit in the required separate, interest-bearing account; failing to transfer the deposit to a successor owner when the property is sold; and failing to return the deposit or its balance within 30 days after the tenancy ends.

There is an important nuance for the sworn list. Failing to furnish the sworn itemized list within 30 days is itself a violation that forfeits the landlord’s right to keep any part of the deposit, but that particular failure is not one of the three triggers for treble damages. In practice the two consequences run together: a landlord who blows the deadline usually both forfeits the deductions and fails to return the balance in time, so the treble penalty attaches through the failure-to-return trigger. The safest reading is that any misstep at return time can compound into three times the deposit plus interest, costs, and attorney’s fees, and the only reliable defense is a timely, sworn, fully documented return.

The One-Month Deposit Cap

The amount a Massachusetts landlord may hold is tightly limited. Under M.G.L. c.186 s.15B, the security deposit may not exceed an amount equal to the first month’s rent. At the start of the tenancy the landlord may lawfully collect, at most, the first month’s rent, the last month’s rent, a security deposit equal to the first month’s rent, and the actual cost of a new lock and key for the unit. Anything beyond those items is not permitted, and a deposit larger than one month’s rent is unlawful on its face, which weakens the landlord’s position in any later dispute over the return.

The cap governs collection; the return letter governs the accounting at the end. Document the original amount taken and account for it exactly on the return letter, and keep the deposit receipt and the interest records that Section 15B requires from the day the deposit is collected.

The Statement of Condition at Move-In

Massachusetts pairs the return duties with an upfront duty that protects both sides. Under M.G.L. c.186 s.15B, subsection 2, a landlord who accepts a security deposit must give the tenant a separate written statement of the present condition of the premises within ten days after the tenancy begins, listing existing damage and any known code violations. The move-in statement of condition is the baseline that later separates tenant-caused damage from a condition that predated the tenancy. Without it, the landlord cannot lawfully charge the tenant at move-out for a defect that was already there, because nothing proves the tenant caused it.

Wear and Tear Versus Damage

Massachusetts treats reasonable wear and tear as the gradual deterioration of the unit from ordinary use over time, and it is never deductible. Faded paint, minor carpet wear in walking paths, small scuff marks near door handles, loose grout, and minor nail holes from hanging pictures all fall on the wear-and-tear side. Damage is harm beyond ordinary use: large holes in walls, carpet stains or burns, broken fixtures, pet urine saturation, smoke damage, missing appliances, or deliberate alterations. Only unpaid rent, unpaid lawful water charges, agreed increases in real estate taxes, and the reasonable cost of repairing tenant-caused damage beyond wear and tear are deductible. The move-in statement of condition and dated move-out photographs are the evidence that separates one from the other, which is why a thorough Massachusetts move-in and move-out checklist is the upstream document that makes a defensible, sworn deduction possible.

Citation Reference Table

The provisions a Massachusetts return letter relies on live in a single, dense statute:

• M.G.L. c.186 s.15B, subsection 4 – the 30-day deadline to return the deposit and the balance, with interest, after the tenancy ends.
• M.G.L. c.186 s.15B, subsection 4 – the sworn itemized list of damages under the pains and penalties of perjury, with written evidence such as estimates, bills, invoices, or receipts.
• M.G.L. c.186 s.15B, subsection 3 – the separate interest-bearing account in a Massachusetts bank and the five percent (or lesser actual) annual interest owed to the tenant.
• M.G.L. c.186 s.15B, subsection 2 – the written statement of the present condition of the premises within ten days after the tenancy begins.
• M.G.L. c.186 s.15B, subsection 6 – the acts that forfeit the landlord’s right to retain any part of the deposit, including failing to furnish the sworn list.
• M.G.L. c.186 s.15B, subsection 7 – three times the deposit plus five percent interest, court costs, and reasonable attorney’s fees for failing to account correctly, transfer to a successor, or return within 30 days.

Subsection letters and figures shift as the statute is amended, so treat the citations above as a guide and confirm the current text of Section 15B before you rely on a specific subsection in a filing.

What to Send With the Massachusetts Return Letter

A complete deposit-return package usually includes:

• The return letter itself – generated above, signed and dated within 30 days of the tenancy ending.
• The sworn itemized list of damages – signed under the pains and penalties of perjury for any withholding.
• The refund check – for the calculated balance, deposit plus interest minus lawful deductions.
• Copies of the written evidence – the estimates, bills, invoices, or receipts backing each deduction.
• The move-in statement of condition and dated move-out photographs – they establish baseline condition against end-of-tenancy condition.
• The deposit receipt and interest record – the bank, the account, and the interest owed under subsection 3.

Send the package by certified mail with return receipt to the forwarding address, retain the mailing receipt, and keep copies of everything.

Common Massachusetts Landlord Mistakes

The most-litigated Massachusetts deposit disputes share a short list of errors:

• Missing the 30-day deadline because the accounting did not start until a forwarding address arrived.
• Withholding for damage without a sworn itemized list under the pains and penalties of perjury.
• Failing to attach the written evidence, meaning the estimates, bills, invoices, or receipts, for each deduction.
• Holding the deposit in the landlord’s personal account instead of a separate interest-bearing Massachusetts account.
• Failing to pay or credit the five percent (or lesser actual) annual interest the tenant is owed.
• Charging for reasonable wear and tear, or for a condition that predated the tenancy and appeared on the statement of condition.

Tenant Screening as Prevention

The cleanest move-outs come from tenants who were screened thoroughly at the application stage. A verifiable income, a steady payment history, and a clean eviction record are the strongest predictors of a unit returned in good condition, which means a short return letter, a full refund with interest, and no treble exposure. Screening is the upstream control that keeps the deposit accounting simple. Our overview of how to screen tenants step by step walks through the process, and the broader tenant screening laws by state guide covers the rules that apply when you pull a report.