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

In Massachusetts, the security deposit and an itemized statement of any deductions are generally due within 30 days of tenancy ending (M.G.L. c. 186 § 15B). Missing the deadline can forfeit the right to withhold and expose the landlord to added damages. Confirm the current statute for your situation.

Do deductions have to be itemized?

Yes — in nearly every state a landlord must provide an itemized statement listing each deduction, not a vague lump sum. This generator lists each deduction on its own line with an amount and does the refund math.

Is the letter generator free?

Yes — free, no signup. It itemizes deductions, does the refund math, cites the state deadline, and can email the PDF so the timestamp documents timely delivery.

Free tool · No signup · Pre-set for Massachusetts

Massachusetts Security Deposit Return Law & Letter

In Massachusetts, the deposit and an itemized statement are generally due within 30 days of tenancy ending (M.G.L. c. 186 § 15B). Build the letter below — deductions listed line by line and the refund math done.

Massachusetts prescribes how it is sent: Itemized list sworn under the pains and penalties of perjury, with supporting documentation.

Start your Massachusetts letter →

M.G.L. c. 186 § 15B — the deadline to return the deposit and send the itemized statement

Massachusetts provides for the deposit’s return within 30 days of tenancy ending (M.G.L. c. 186 § 15B). 30 days sits mid-range: 6 of the 26 states verified here are shorter, 6 are longer.

Tenancy ends	Letter must be sent by
January 31, 2026	March 2, 2026
April 15, 2026	May 15, 2026
July 31, 2026	August 30, 2026
November 30, 2026	December 30, 2026

What the Massachusetts letter has to contain

Every deduction on its own line. Massachusetts requires an itemized statement rather than a lump sum (M.G.L. c. 186 § 15B).
The arithmetic, shown. Deposit held, each deduction, and the balance refunded or still owed — so nothing has to be taken on trust.
Where the refund went. The forwarding address you sent it to, and how.

How Massachusetts requires it to be sent

Itemized list sworn under the pains and penalties of perjury, with supporting documentation.

Massachusetts does not accept a bare itemized list. c.186 §15B requires a detailed list of damages, sworn to under the pains and penalties of perjury, together with written evidence — the actual receipts, invoices or estimates for the repairs — delivered inside the same 30 days. A list without the documentation is treated as no list.

M.G.L. c. 186 § 15B · last verified July 2026

Proving you sent it in time

Use the method above — it is the one Massachusetts names, and a timestamp proving you used a different one is evidence against you rather than for you. Keep the mailing receipt with the letter. Email gives you a timestamp for nothing; certified mail gives you a receipt. Either beats posting it second class and hoping. Whatever you use, keep the copy you sent — a Massachusetts deadline you met but cannot evidence is not much better than one you missed.

Write the Massachusetts letter →

Working out what you can defensibly deduct is a separate job from writing the letter — that lives on the Massachusetts deduction page, which prorates each item by its remaining useful life.

Other states: Michigan · Minnesota · Montana · All states

Massachusetts rule last checked 2026-07-23 against M.G.L. c. 186 § 15B. General information, not legal advice — verify the current statute before you rely on it.

Everything else we’ve researched about Massachusetts

Same state, the problems either side of this one. Each carries its own statute and the date we last checked it.