Montana rent late fee law & calculator
No Montana statute caps residential late fees — the lease and the reasonableness standard govern. See the rules below before setting yours.
Late fee due
$75.00
Paid 9 days late; grace ends 5 days after due
A late fee is only collectible if your lease authorizes it. General information, not legal advice.
The Montana late-fee rules
- Maximum fee: No statutory cap — must be reasonable
- Grace period: None — the lease sets it
- Montana's Residential Landlord & Tenant Act doesn't cap late fees — the lease governs (the '10%' figure some charts print for Montana has no residential statutory basis)
Rules as of August 2026. Statutes change — verify with the current text before relying on a number, and check city and county ordinances, which can be stricter. This is general information, not legal advice; consult a Montana attorney for your situation.
Not in Montana? Every state's late-fee rules → Also for Montana landlords: the security-deposit return deadline →
Late fees that apply themselves
Set the rule once — LetsGoLandlord applies fees on schedule, on their own ledger line. Free for 14 days.