Montana Rent Increase Calculator 2026

Montana rent increase quick answer

Rule: No general statewide percentage cap is configured for ordinary private-market rentals.

Who it applies to: Coverage depends on the property, tenancy type, lease terms, exemptions and any local ordinance or regulated-housing program.

Notice requirement: Review required before serving notice.

Last verified: 2026-09-16

Official source: Linked below.

Montana rent increase rule

Montana does not configure a general statewide percentage cap for ordinary private residential rent increases from the authoritative framework reviewed, and § 7-1-111(26) prohibits local governments from controlling the amount of rent charged for private residential or commercial property, subject to the statute's local-government-property and housing-authority carveout. Section 70-26-109 provides a specific month-to-month path: written notice at least 15 days before the expiration of the month may change lease terms, including rent, effective at the expiration of that month. That 15-day mechanism is not a universal rule for fixed-term leases or assisted-housing programs. Montana Department of Commerce separately requires participating Housing Choice Voucher landlords seeking a rent increase after the initial 12-month lease to give 60 days' notice to both the family and Commerce. Max Rental Tools therefore keeps automated Montana notice timing review-gated until the tenancy and program context are confirmed.

Reference: Mont. Code Ann. § 70-26-109; § 7-1-111(26)

Source verified: 2026-09-16 · This primary source governs the state-level rule record used by connected Max Rental Tools workflows.

Connected Montana rental tools

This guide is connected to the same dependency graph used by the calculator, rent-increase notice/PDF workflow, related articles, local guides and translated document pages. A verified rule change can therefore be traced to every downstream surface that may require review.

Common Montana rent increase questions