Maine Security Deposit Guide: Caps, Trust Accounts, and the Return Window

Maine has some of the most landlord-specific security deposit rules in New England. The cap, the holding requirements, the return window, and the itemization rules are all spelled out in statute — and they're the single most common place small landlords get sued. This guide walks through what the law actually requires when you collect, hold, and return a residential security deposit in Maine.

General information for Maine landlords, not legal advice. The controlling statute is 14 M.R.S. §§ 6031–6038. Always confirm current figures and forms before relying on them.

How much you can collect

For residential tenancies in Maine, the security deposit is capped at the equivalent of two months' rent. That cap includes anything you label as a "deposit," "damage deposit," "pet deposit," or "last month's rent held in trust" — if it's refundable, it counts against the two-month ceiling. A non-refundable pet fee is a different animal, but only if your lease is unambiguous that it is non-refundable and not held against future damage.

Two important exceptions to the two-month cap: in Portland, the Rent Control Ordinance (Sec. 6-223.2) caps the deposit at one month's rent and prohibits application fees — and if that deposit includes last month's rent, only an additional half-month may be collected. Statewide, the cap is also one month's rent for tenancies where the tenant is elderly or has a disability. Mobile home park lot rentals have their own, lower cap; if you operate a manufactured housing community, do not assume the two-month rule applies to lot rent.

Where the money has to live

A Maine security deposit is the tenant's money, held in trust. You cannot commingle it with operating funds. In practice that means:

• A separate account at a Maine financial institution, clearly identified as a security deposit or trust account.
• No personal or business expenses paid from that account, ever.
• A ledger that ties each deposit to a specific unit, tenant, and lease.

Maine does not require you to pay interest on residential deposits, but if your lease promises interest you owe what you promised. If you accept a deposit and later sell the property, the deposit must be transferred to the new owner — and the tenant notified in writing of who is holding it.

The 21-day and 30-day return windows

After a tenancy ends, you have a hard statutory deadline to return the deposit (or any unrefunded portion) along with a written, itemized statement of any deductions:

• 21 days for a tenancy at will (month-to-month with no written lease, or a lease that has converted to month-to-month).
• 30 days for a written lease for a fixed term.

The clock starts when the tenancy ends and the tenant has surrendered the unit — not when you get around to inspecting it. Mail the statement and any refund to the tenant's last known address, or any forwarding address they have given you in writing.

What you can legally deduct

Lawful deductions in Maine are narrower than most landlords think. You may deduct for:

• Unpaid rent owed at the end of the tenancy.
• Documented damage beyond ordinary wear and tear, with itemized cost.
• Unpaid utility charges the tenant was contractually responsible for.
• Storage or disposal of property the tenant left behind, subject to the abandoned-property procedure.

You cannot deduct for ordinary wear and tear — faded paint after five years, worn carpet in a high-traffic hallway, a tired but functional appliance. The line between "wear" and "damage" gets argued in court constantly. Photographs and a signed move-in condition report are the single best protection against that argument going the wrong way.

The itemized statement

The written statement you return with (or in place of) the deposit must:

• List each deduction separately with a dollar amount.
• Describe the condition or item the deduction is for.
• Total to the amount withheld.
• Be signed and dated.

A single line that reads "damages — $1,200" is not an itemized statement, and a court will treat the deposit as wrongfully withheld.

What happens if you miss the deadline

A Maine landlord who fails to return the deposit or itemized statement within the 21 or 30 day window forfeits the right to withhold any of it. The tenant can sue for the full deposit, and the statute also allows recovery of up to double damages plus reasonable attorney's fees if the court finds the withholding was in bad faith. The math gets ugly quickly: a $3,000 deposit, returned 45 days late with a vague deduction list, can become a $6,000 judgment plus legal costs.

Move-in and move-out documentation

The single highest-leverage thing a Maine landlord can do is build the record at move-in. Anchor's standard onboarding for any new tenancy includes:

• A written move-in inspection checklist signed by the tenant within the first week of occupancy.
• Date-stamped photographs of every room, every appliance, the flooring, the walls, and any pre-existing damage.
• A copy of the signed checklist returned to the tenant and stored in the unit's file.

At move-out, the same checklist is filled out again, photographed again, and used as the basis for any deduction. When the documentation is symmetric, deposit disputes almost always settle in the landlord's favor.

A practical compliance checklist

• Never collect more than two months' rent as a refundable deposit.
• Hold the deposit in a separate Maine trust account, no exceptions.
• Get a signed, photographed move-in inspection within the first week.
• Calendar the 21- or 30-day return deadline the day the tenancy ends.
• Itemize every deduction with a description and a dollar amount.
• Send the refund and statement to the tenant's last known address by mail.
• Keep the entire deposit file for at least six years after move-out.

How Anchor handles this for our clients

Every Anchor-managed unit has its deposit held in a trust account at Norway Savings Bank, with the move-in inspection, photographs, and ledger entries stored against the unit's file from day one. The return deadline is calendared automatically the moment a notice to vacate is recorded, and the itemized statement is generated from the same checklist used at move-in. When a tenant disputes a deduction, the file is already built — and the deposit conversation is short.