Montana Security Deposit Laws: No Cap, the 10/30-Day Return, and Deduction Rules

Montana security deposit law lives in one compact stretch of the code — Montana Code Annotated sections 70-25-201 through 70-25-206 — and it works differently from the states landlords often compare it to. Montana sets no cap on how much a landlord may collect, but it puts real teeth into the return: a landlord must send back the full deposit within ten days when nothing is owed, or an itemized list of charges plus any refund within thirty days when deductions are made. It also builds the whole deduction system on a move-in written statement of condition, and it makes any cleaning charge conditional on a twenty-four-hour notice to the tenant. This guide walks the entire Montana framework end to end.

Whether you own one rental in Bozeman or a small portfolio across the state, the same statute governs, because Chapter 25 of Title 70 applies to residential tenancies statewide. What changes from tenancy to tenancy is your paperwork: the move-in statement of condition, the cleaning notice, and the itemized list are the three documents that decide almost every dispute. Where a detail could turn on the facts, this guide flags it so you know to check. Everything here is general information, not legal advice; confirm the current figures and consult a licensed Montana attorney before acting on a specific dispute.

Below, a short overview video summarizes the Montana deposit rules; the sections that follow break down each piece in detail — the absence of a cap, allowable deductions versus normal wear and tear, the twenty-four-hour cleaning notice, the ten-and-thirty-day return timeline, the move-in statement of condition, the no-interest rule, the penalty for wrongful withholding, the move-out walkthrough, and the small-claims path if a dispute cannot be resolved.

The first thing that surprises landlords moving into Montana from a capped state is that Montana law sets no maximum on a residential security deposit. Chapter 25 of Title 70 of the Montana Code Annotated governs deposits from collection through return, but nowhere does it cap the amount. A landlord may set the deposit at whatever the lease provides — commonly the equivalent of one month’s rent, sometimes two for higher-risk tenancies or pet-owning tenants. There is no separate statutory pet-deposit limit either.

That freedom is real, but it is not the same as a free hand. Because the amount is uncapped, Montana law shifts a tenant’s protection to the back end of the tenancy: the return deadlines, the itemized list, the cleaning-notice rule, and the move-in statement of condition. A landlord who collects a large deposit and then cannot document deductions or misses the deadline is exposed to repaying the whole sum, no matter how big it was. Set the deposit at a defensible number, and treat every dollar as refundable unless a documented charge applies.

Montana Code Annotated section 70-25-201 lists what a landlord may take out of a security deposit. The landlord bears the burden of proving each deduction, so anything not clearly authorized and documented is presumed to be the landlord’s cost to absorb.

Permitted Deductions

• Damage caused by the tenant. Physical damage to the premises beyond ordinary wear and tear, such as broken fixtures, large holes, or pet-stained flooring.
• Unpaid rent and charges. Rent that remains owed, plus late charges, unpaid utilities, and any penalties due under the lease, along with other money the tenant owes the landlord.
• Actual cleaning expenses. The real cost to clean the unit — which may include a reasonable charge for the landlord’s own labor — but only after the twenty-four-hour cleaning notice described below.

Not Deductible — Ordinary Wear and Tear and Cyclical Maintenance

Ordinary wear and tear is the natural deterioration of a unit from normal living, and the landlord must absorb it. Montana also forbids charging a tenant for the routine, cyclical maintenance a landlord performs on the property regardless of who lives there. Non-deductible items typically include:

• Faded or lightly scuffed paint, and small nail holes from hanging pictures.
• Carpet worn thin along walkways from ordinary foot traffic, with no stains or pet damage.
• Minor marks, loose grout, or aged caulk around tubs and sinks.
• Routine cyclical maintenance the landlord noted at move-in — unless the tenant’s negligence forced the landlord to perform it.

One rule that trips up landlords new to Montana is the cleaning-notice requirement. Under Montana Code Annotated section 70-25-201, a landlord may not deduct any cleaning charge until written notice has been given to the tenant. That notice must describe the cleaning the tenant did not do and the additional cleaning that needs to be done. Once the notice is delivered, the tenant has twenty-four hours to complete the required cleaning before the landlord may charge for it.

The point is to give the tenant a genuine last chance to clean rather than pay. If the tenant cleans within the window, the charge disappears. If the tenant does not, the landlord may deduct the actual cleaning cost, including a reasonable charge for the landlord’s own labor. This is a real, enforceable precondition — a cleaning deduction taken without first giving the notice and the twenty-four-hour window is vulnerable in a dispute.

Montana runs a two-track return clock, and getting the track right is the deadline landlords miss most. Under Montana Code Annotated section 70-25-202, the deadline depends on whether the landlord is keeping anything.

Ten Days When Nothing Is Owed

If, after inspection, there are no damages, no cleaning required, and no unpaid rent, and the tenant can show that no utilities are unpaid, the landlord must return the full deposit within ten days. This is the fast track: when the unit comes back clean and the account is square, the tenant should have the whole deposit back inside ten days, not thirty.

Thirty Days When Deductions Are Made

If the landlord is deducting anything, the landlord has thirty days after termination of the tenancy or after surrender and acceptance of the premises — whichever occurs first — to deliver a written list of any rent due and the damage and cleaning charges the landlord alleges are the tenant’s responsibility. The list must be accompanied by payment of the difference, if any, between the deposit and the permitted charges. The refund may be made by electronic transfer, cash, check, or another form, mailed to the tenant’s new address or, if none was given, to the last-known address.

Montana builds its entire deduction system on a document created at the start of the tenancy. Under Montana Code Annotated section 70-25-206, a landlord who requires a security deposit must give the tenant a separate written statement of the present condition of the premises at the beginning of the lease. The statement must clearly and concisely describe the condition of the unit as known to the landlord, or as should have been known on a reasonable inspection, state whether the premises were previously rented, and carry the landlord’s or agent’s signature. On request, the landlord must also share the damage-and-cleaning list from the immediately preceding tenancy.

The consequence of skipping this document is severe. A landlord who fails to furnish the move-in statement of condition is barred from recovering any sum for damage to or cleaning of the premises — unless the landlord can establish by clear and convincing evidence that the damage occurred during that tenancy and was caused by the tenant. That is a demanding standard, and it exists precisely because without a baseline there is no fair way to know what the tenant changed.

Montana keeps the money-handling side simple. There is no statewide requirement to pay interest on a security deposit, and no requirement to hold the deposit in a separate or interest-bearing account. A Montana landlord may lawfully hold deposits in a general account and pay no interest. Keeping deposits segregated is still sound bookkeeping and makes an accounting easier at move-out, but the law does not compel it.

On fees, treat money collected as a deposit as refundable. Montana’s deposit statutes govern the return of the “security deposit,” and a charge collected to secure the tenant’s performance functions as a refundable deposit that must be accounted for at move-out under the same rules. Labeling a charge “non-refundable” does not automatically place it outside the deposit rules, and how a specific fee is treated can turn on the lease language and the facts. Because that line can be contested, spell out any genuinely separate, earned fee clearly in the lease and confirm the current treatment with a Montana attorney rather than assuming a label controls.

Montana backs its return rules with a civil remedy for the tenant. Under Montana Code Annotated section 70-25-204, a landlord who wrongfully withholds a security deposit or any portion of it is liable to the tenant in a civil action for the amount wrongfully withheld or deducted. The court may award attorney fees to the prevailing party at its discretion, and the burden of proving that the tenant caused the damage rests on the landlord.

Two timing rules matter. First, a tenant generally cannot sue until the applicable period has run — ten days after the landlord indicates nothing is owed, or thirty days after termination or surrender — or until the landlord has denied the claimed sum in writing. Second, the forfeiture rules stack against a careless landlord: fail to send the itemized list under section 70-25-203, or fail to give the move-in statement of condition under section 70-25-206, and the landlord may lose the deductions entirely before the wrongful-withholding analysis is even reached.

Put the Montana rules together and the move-out becomes a repeatable checklist rather than a judgment call. Follow this sequence and penalty exposure all but disappears.

A thorough move-out record starts at move-in. Use a documented Montana security deposit itemization form to keep the thirty-day list organized and defensible, and a clear Montana security deposit return letter when you send the refund. Photographs at both ends let you prove exactly what the tenant caused.

Most Montana deposit disputes never reach a courtroom, but when they do, they usually land in the small claims division of justice court — a forum designed to be used without a lawyer. As of 2026, the Montana small claims limit is seven thousand dollars, which comfortably covers a typical deposit dispute. A claim above that limit goes to the justice court civil docket or to district court. Verify the current limit, which the Legislature adjusts over time.

The pattern is consistent: Montana deposit cases are won on paper. The landlord who documents condition at both ends, honors the cleaning notice, itemizes clearly, and mails on time rarely loses — and the tenant who keeps a copy of the signed move-in statement and the landlord’s written list is equally well positioned to recover a wrongful withholding.

Beyond a routine move-out, a handful of situations trip up Montana landlords because the deposit rules interact with other events. Three come up often.

When the Tenant Leaves No Forwarding Address

Under Montana Code Annotated sections 70-25-205 and 70-25-202, a tenant is not strictly required to hand over a new address, and the absence of one does not excuse the landlord from acting. If the tenant leaves no address, the landlord mails the refund and the itemized list to the tenant’s last-known address — often the rental unit itself — and keeps proof of mailing. Mailing to that last-known address is not a wrongful withholding even if the tenant never receives it, though the landlord still owes the tenant the amount due. Do not sit on the funds waiting for an address; send the list and refund on the deadline.

Roommates and a Single Deposit

Where several tenants share a lease and a single deposit, Montana treats the deposit as one sum tied to the tenancy. When one roommate leaves and another stays, the landlord’s return obligation is generally triggered when the tenancy as a whole ends and the unit is surrendered, not each time one roommate moves out mid-lease — a timing that also interacts with how the tenancy ends, covered in our guide to Montana lease termination laws. Splitting a refund among roommates is usually a private matter for the tenants. Return the single deposit to the tenants collectively unless the lease or a written agreement directs otherwise, and avoid getting drawn into dividing it.

When the Property Is Sold

If a Montana landlord sells a rental with a sitting tenant, the deposit does not simply vanish into the sale. The seller should either transfer the deposit to the buyer, who then stands in the seller’s shoes for the return obligation, or return it to the tenant with a proper accounting, and the tenant should be told which occurred. A landlord buying an occupied Montana property should confirm in escrow that deposits are transferred and documented, so the return obligation and the paperwork trail pass cleanly to the new owner. Because the mechanics can turn on the purchase terms, confirm the handling with counsel.

Every rule above ultimately turns on proof. Montana places the burden on the landlord to justify each deduction, which means the landlord who cannot document a charge loses it — regardless of whether the damage was real. Build the evidence file across the whole tenancy, not at the end.

At Move-In

• The signed, separate written statement of condition required by section 70-25-206, describing the unit room by room.
• Timestamped photos or video of every wall, floor, fixture, and appliance, stored where the date cannot be doubted.
• A written note of any pre-existing wear, so it is never later charged to the tenant.

During the Tenancy

• A dated log of every maintenance request and the landlord’s response, which also rebuts a habitability defense.
• Records of any lawful entry to inspect or repair, made with proper notice under Montana entry rules — see Montana landlord entry laws.

At Move-Out

• A copy of any cleaning notice sent, with the date, so the twenty-four-hour window is provable.
• A second set of timestamped photos taken at surrender, to compare against move-in.
• Invoices, receipts, or a documented in-house labor cost for every damage and cleaning charge.
• Proof that the itemized list and refund were mailed within thirty days — or the full deposit within ten.

The cheapest deposit dispute is the one that never happens. A few disciplined habits protect a Montana landlord across an entire portfolio.

• Give the move-in statement of condition every time. It is required, and without it you may be barred from charging for damage or cleaning at all.
• Set the deposit at a defensible number. There is no cap, but a larger deposit means larger exposure if the return paperwork slips — one to two months’ rent is the common range.
• Honor the twenty-four-hour cleaning notice. Never deduct a cleaning charge without first giving the notice and the window to cure.
• Calendar the ten-day and thirty-day deadlines at surrender and mail the list or refund with proof, well before either expires.
• Keep deposits in a separate account. Not required, but it keeps the accounting clean and signals good faith.
• Screen carefully before you ever hand over keys. The tenants most likely to leave a unit in disputed condition are often the ones a thorough screening would have flagged.

That last point is where most disputes are actually won — before the lease is ever signed. A prior eviction, a pattern of damage, or unstable finances rarely appears out of nowhere; it usually leaves a trail an applicant’s history reveals. Screening for it is the single highest-leverage habit a Montana landlord can build.

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