Montana Landlord-Tenant Laws: The Complete 2026 Overview

Montana sets no cap on the deposit amount – the figure is set by the lease, with about one month’s rent the common practice – but the Residential Tenants’ Security Deposits chapter at section 70-25-202 locks down the return on a two-track clock. If the landlord takes no deductions, the full deposit must be returned within ten days after the tenancy ends. If the landlord withholds anything, the deadline stretches to thirty days and a written itemized list of the damage and cleaning charges is required. Cleaning charges are a special case: the landlord must give the tenant written notice and a chance to clean before deducting for cleaning. Montana does not require a landlord to pay interest on the deposit or to hold it in a separate escrow account. A landlord who misses the deadline or skips the itemized list can be sued for the full deposit, and the prevailing tenant can recover court costs and reasonable attorney fees.

Read the full Montana security deposit laws guide for permitted deductions, the cleaning-notice rule, and the move-out timeline.

Montana is not a just-cause state for fixed-term expirations, but every eviction starts with proper written notice under the Residential Landlord and Tenant Act. For nonpayment of rent, the landlord must serve a three-day notice to pay or quit before filing. Once suit is filed in Justice Court, the tenant has a ten-day window to respond, and the court typically sets a hearing ten to thirty days after filing. An uncontested Montana eviction usually resolves in about thirty to sixty days from notice to writ of possession. Self-help evictions – changing locks, removing belongings, or cutting off utilities – are illegal and expose the landlord to actual damages plus statutory penalties and attorney fees. Only a sheriff acting on a writ of possession may physically remove a tenant, and federally backed properties may carry a separate thirty-day notice requirement under the CARES Act.

Read the full Montana eviction notice laws guide for the filing steps, the hearing timeline, and the writ process.

Montana puts entry squarely in statute. Under Montana Code Annotated section 70-24-312, a landlord must give the tenant at least twenty-four hours’ notice before entering to inspect, make repairs or improvements, supply services, or show the unit, and may enter only at reasonable times. The tenant may not unreasonably withhold consent to a properly noticed entry for a lawful purpose, but the landlord’s right is not unlimited: abusing access or using it to harass the tenant is barred. A genuine, immediate emergency such as a fire, a flood, or a gas leak permits entry without notice, but a routine repair that could wait does not qualify. A lease may add detail about hours or delivery, yet it cannot authorize entry on less than the twenty-four hours’ notice the statute requires for a non-emergency. A tenant facing unlawful or harassing entry may obtain an injunction and recover actual damages.

Read the full Montana landlord entry laws guide for the permitted-entry reasons and how to write a compliant notice.

Montana has no rent control. State law preempts local rent regulation, so no Montana city or county may cap rent increases or regulate rent amounts, and there is no statutory ceiling on how much a landlord may raise the rent. What Montana regulates is process and timing, not the number. During a fixed-term lease the rent is locked at the agreed figure; an increase takes effect only at renewal or on a month-to-month tenancy. For a month-to-month tenancy, section 70-24-441 requires at least thirty days’ written notice of an increase, and best practice is sixty to ninety days so tenants can budget. Oral notice is not enough – the change must be in writing to be enforceable. The limits that do apply are anti-retaliation and anti-discrimination: a landlord may not raise the rent to punish a tenant for a good-faith complaint or for exercising a legal right, and may not raise it on a discriminatory basis.

Read the full Montana rent increase laws guide for the notice mechanics and the retaliation window.

Montana Code Annotated section 70-24-201 governs residential late fees. There is no fixed dollar cap, but a late fee is enforceable only when notice of the fee is included in a written lease, the fee is a reasonable estimate of the uncertain damages a late payment causes rather than a penalty, and the rent is actually late. In practice, courts treat late fees of about five to ten percent of the monthly rent as presumptively reasonable, while a fee such as twenty-five percent of the rent is likely unenforceable as a penalty. Montana sets no statutory grace period, so any grace window is governed entirely by the lease – three to five days is the customary range. A returned-check, or NSF, fee is enforceable when the lease sets it, and typical Montana NSF fees run about thirty dollars. A tenant whose check bounces can face both an NSF fee and a late fee if the lease provides for each.

Read the full Montana late fee laws guide for the reasonableness test and grace-period practice.

Under the Montana Residential Landlord and Tenant Act, a landlord must keep the rental fit for living throughout the tenancy – essential systems working, the structure sound, and the premises compliant with health and safety codes, with the core duty set out at section 70-24-303. The tenant triggers the repair duty by giving proper written notice, and Montana generally allows the landlord fourteen days to address a non-emergency repair. If the landlord fails to act, section 70-24-406 gives the tenant a path forward, including the statutory repair-and-deduct remedy where it applies and, for a serious defect, the right to terminate the lease. Those remedies require strict adherence to the statutory procedure: give notice, allow the reasonable response time, and only then exercise the authorized remedy. Withholding rent directly before following the notice procedure almost always forfeits habitability remedies. Retaliation against a tenant who complains about conditions is barred by section 70-24-431.

Read the full Montana habitability laws guide for the repair-request procedure and the repair-and-deduct steps.

Montana recognizes several grounds on which a tenant may end a fixed-term lease early without owing the balance. An uninhabitable unit is the clearest: under section 70-24-406, a tenant may terminate, generally fourteen days after written notice, when the landlord materially fails to maintain the unit under section 70-24-303 and does not cure. An essential-service cutoff of heat, water, or another essential service triggers extra remedies under section 70-24-408, including procuring the service and deducting the cost, obtaining substitute housing, or recovering damages. Landlord harassment or unlawful entry under section 70-24-312 is its own ground. Active-duty servicemembers who enter service or receive orders for a permanent change of station or a deployment of ninety days or more may terminate under the federal Servicemembers Civil Relief Act. For a tenant who simply leaves without a statutory ground, section 70-24-426 requires the landlord to re-rent at a fair rental, so the departing tenant owes only the vacancy gap and re-rental costs, not the entire remaining term.

Read the full Montana breaking lease laws guide for each ground and the notice-and-proof steps.

Ending a Montana tenancy depends on its type, and the notice periods live at section 70-24-441. A month-to-month tenancy is terminated by written notice of at least thirty days from either party, and the period runs from the date the notice is delivered rather than the date it is written or mailed. A fixed-term lease generally runs to its end date; to decline to renew one, Montana calls for thirty days’ notice before the end. Just cause is not required to end a month-to-month tenancy or to decline renewal, but proper written notice for the full statutory period is mandatory – a landlord cannot simply tell a tenant to leave, and using the wrong period invalidates the termination and restarts the clock. Oral notice is not sufficient. A tenant who stays past the termination date becomes a holdover, and Montana permits treble damages against a willful holdover under section 70-24-429, with the landlord pursuing possession through an unlawful-detainer action in Justice or District Court rather than self-help.

Read the full Montana lease termination laws guide for notice by tenancy type and holdover liability.

For an actual pet, Montana imposes no cap on pet deposits, pet fees, or pet rent, so a landlord may charge a reasonable amount if the lease provides for it, and a no-pet policy is generally enforceable against ordinary pets. Assistance animals are treated completely differently. Under the federal Fair Housing Act, a service animal or emotional support animal is not a pet – a landlord may not charge any pet deposit, fee, or rent, and may not apply a breed or weight restriction or a no-pet policy to it, and must make a reasonable accommodation to allow it. When the disability or the animal’s role is not obvious, the landlord may request reliable documentation from a licensed professional, but may not demand certification or registration. The tenant remains liable for any actual damage the animal causes, but never for an advance fee simply because the animal is present. Misrepresenting a pet as a service animal is criminalized under Montana Code Annotated section 49-4-221.

Read the full Montana pet and ESA laws guide for accommodation requests and documentation limits.

Montana leaves most of tenant screening to the landlord, so the binding rules are largely federal. With the applicant’s written authorization, a landlord may pull a consumer report covering credit, rental history, income, and criminal history – the Fair Credit Reporting Act requires a permissible purpose and consent first. Montana does not cap application or screening fees, but they must be reasonable and tied to the actual cost of the report, and any nonrefundable fee must be clearly identified as nonrefundable in writing or it risks being treated as a refundable deposit. If a denial, a higher deposit, or a co-signer requirement rests in any part on a consumer report, the FCRA requires an adverse action notice naming the reporting agency, stating that the agency did not make the decision, and explaining the applicant’s right to a free copy and to dispute it. Because the deposit return runs on the ten-or-thirty-day clock, keeping fee and deposit paperwork clean from the start keeps the whole file defensible.

Read the full Montana tenant screening laws guide for the FCRA steps and the fair-housing baseline.