State rules
No cap on the amount; 30 days' written notice for a change in a month-to-month tenancy.
| Amount cap | No cap on the amount. |
|---|---|
| Notice for an increase | 30 days' written notice for a change in a month-to-month tenancy. |
| Frequency | No statewide frequency limit beyond the notice and lease rules. |
| Retaliation window | Retaliation is barred, as everywhere; the presumption window varies — document your dates. |
| Local rent caps | Not barred statewide; check your city. |
| Sources | Mont. Code § 70-24-441 |
No statewide lot-rent cap.
Rules checked October 2026
Sources: Mont. Code § 70-24-441. Information, not legal advice.