Montana Rent Increase Laws

A scenic view of the Clark Fork River winding through downtown Missoula in Montana, USA.
Last updated iconLast updated April 24th, 2026

When a lease renewal rolls around, adjusting a tenant’s rent payment doesn’t have to be complicated. Understanding Montana rent increase laws makes setting the right price quick and easy — without risk or guesswork.

At first glance, Montana isn’t a rent-controlled state, meaning there are no laws regulating rent rates. But other legal protocols still apply, so you may need to jump through a few hoops to properly increase the rent. In this TurboTenant guide, we’ll cover the notice requirements, federal and state laws, and best practices every landlord in Big Sky Country should know.

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Montana Rent Increase FAQs

How much can I raise rent in Montana?

Montana law doesn’t cap rent increases, but we recommend checking your local market rate to determine a reasonable price.

Is there a maximum late fee in Montana?

Landlords can charge late fees in Montana, but state law doesn’t cap them. Just be sure to outline your late payment penalties in your rental agreement.

Can I increase rent if the tenant is on a verbal agreement?

If you have a verbal agreement, you still have to comply with the state’s rent increase laws. Specifically, you must give tenants 15 days’ written notice if you have a month-to-month verbal agreement (Mont. Code § 70-26-109).