Montana Security Deposit Law: A Practical Guide

Montana limits what a deposit can cover

A security deposit is not a blank check for every cost after a tenant moves out. Under MCA § 70-25-201, a landlord may deduct for tenant-caused damage, unpaid rent, late charges, utilities, lease penalties, other money owing under the agreement, and actual cleaning expenses. The statute does not permit deductions for purposes outside that list.

The distinction between normal wear and chargeable damage matters. The law defines cleaning expenses as actual and necessary cleaning needed because the premises were not returned to the condition at the start of the tenancy, not ordinary cyclical maintenance.

Cleaning charges have a specific rule

Before deducting cleaning charges, a landlord generally must give written notice describing the cleaning not completed by the tenant and what must be done. The tenant ordinarily has 24 hours after delivery of that notice to complete the required cleaning. There are exceptions when the tenant leaves without notice or when the tenancy has already been terminated in particular circumstances.

That notice requirement is a reason both landlords and tenants should keep the lease, move-in condition statement, photographs, and the actual communications about cleaning. A disagreement about “clean” is easier to assess when the starting condition and notice are documented.

The deadline depends on the condition of the property

When a landlord claims unpaid rent, damage, or cleaning charges, MCA § 70-25-202 generally requires a written itemized list and the balance of the deposit within 30 days after the tenancy ends or the premises are surrendered and accepted, whichever comes first.

If there is no damage, no cleaning required, no unpaid rent, and the tenant can show no unpaid utilities, the deposit is due within 10 days. The tenant should provide a current address. A landlord who mails money to the last known address can avoid a wrongful-withholding claim based solely on nonreceipt, while still remaining liable for the amount actually due.

Missing the itemized list matters

A landlord who fails to provide the required written list forfeits the right to withhold part of the deposit for damage or cleaning charges. That does not automatically decide every dispute over rent or other amounts, but it is an important statutory rule.

If a tenant claims that money was wrongfully withheld, the landlord bears the burden of proving tenant-caused damage. A court may award the prevailing party attorney fees in its discretion. The statute does not make a penalty automatic, so the documents and timing matter.

A focused written demand can clarify the dispute

A demand should identify the tenancy, move-out date, deposit amount, itemized charges received, amount in dispute, and the documents supporting the request. It should stay factual. A useful demand is not a long argument. It gives the other side a clear chance to correct a missing list, refund issue, or unsupported charge.

When legal advice is useful

Morgan Law assists landlords and tenants in Great Falls and north central Montana with deposits, leases, notices, and other housing disputes. An early review can identify whether the problem is a deadline, a notice issue, an unsupported charge, or a broader lease dispute.