Montana Late Rent Fee Laws: Limits, Grace Periods, and Penalties
What Montana landlords can charge when rent is late, how long they must wait, and what an illegal fee costs. Last reviewed 2026-08-16.
How much can a landlord charge in Montana?
Montana's Residential Landlord and Tenant Act, Title 70 chapter 24, does not cap late fees, and MCA 70-24-201 lets the parties agree to any term not prohibited by the chapter, so a late fee is a contract term. Montana's liquidated damages statute is stricter than most states': MCA 28-2-721 makes a clause fixing damages in advance void, except where from the nature of the case it would be impracticable or extremely difficult to fix the actual damage. A Montana late fee therefore has to be tied to genuinely hard-to-measure costs, and a round punitive number can be struck entirely.
How late does rent have to be?
None. Under MCA 70-24-201 rent is payable without demand or notice at the time and place the parties agreed, so rent due on the first is late on the second. Montana's three day notice to pay or quit under MCA 70-24-422 is an eviction step, not a grace period for the fee.
Does the fee have to be in the lease?
The late fee must be in the rental agreement, since MCA 70-24-201 is what authorizes the parties to include such terms and nothing in the Act implies one. Montana imposes no separate disclosure form for the fee beyond the agreement itself.
What happens if you charge too much?
If the fee cannot satisfy the impracticable-or-extremely-difficult standard, the clause is void and the landlord recovers nothing rather than a reduced amount. Deducting an unenforceable late fee from a security deposit adds exposure under Montana's security deposit act, Title 70 chapter 25, which allows a tenant to recover wrongfully withheld amounts plus costs.
Returned payment fees
MCA 27-1-717 allows a service charge of up to $30 on a dishonored check after written demand mailed to the issuer. If the issuer does not pay within ten days of that demand, the landlord may sue for damages equal to the service charge plus the greater of $100 or three times the check, capped at $500 above the check's value.
Recent changes to the law
Montana's 2025 session passed a large housing package covering zoning, accessory dwelling units, single-stair multifamily buildings, and impact fees, but it made no change to late fee rules. MCA 70-24-201, 28-2-721, and 27-1-717 are unchanged as of August 2026.
What Montana landlords get wrong
Montana looks permissive because there is no cap, but MCA 28-2-721 starts from the position that advance-fixed damages are void and then carves out an exception. That flips the burden onto the landlord to justify the number. Write the lease clause so it recites what the fee covers, such as bookkeeping time, follow-up, and the cost of carrying unpaid rent, and keep it to one charge per late month. Late fees are not rent, so do not include them in the amount stated on a three day notice to pay or quit under MCA 70-24-422; overstating the rent owed can invalidate the notice and cost you the eviction.
The law itself
Frequently asked questions
Is there a maximum late fee in Montana?
No statutory maximum. Montana's Residential Landlord and Tenant Act does not cap late fees, so the lease sets the amount. The real limit is MCA 28-2-721, which voids advance-fixed damages clauses unless actual damages would be impracticable or extremely difficult to determine. Practically that means keeping the fee modest, usually four to five percent of monthly rent, and tying it to real costs.
Does Montana give tenants a grace period on rent?
No. Under MCA 70-24-201 rent is payable without demand or notice at the time agreed in the lease, so rent due on the first is late on the second and a fee can apply immediately if the lease provides for it. The three day notice to pay or quit under MCA 70-24-422 is part of the eviction process, not a grace period on the fee.
Can a Montana landlord take a late fee out of my security deposit?
Only if the fee was validly charged under the lease. If the late fee clause fails Montana's liquidated damages test, the deduction is improper and you can pursue the withheld amount under Montana's security deposit act in Title 70 chapter 25. Ask for the itemized statement of deductions the landlord is required to provide and dispute the fee line specifically.
Can a Montana landlord include late fees in a three day notice?
They should not. A three day notice to pay or quit under MCA 70-24-422 is about unpaid rent, and late fees are a separate contract charge, not rent. A notice that demands rent plus fees overstates what is owed and can be attacked as defective, which can defeat the eviction. Landlords should pursue unpaid fees as a separate money claim.
Keep reading
Charging the wrong late fee can cost you more than the rent.
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Start Free TrialThis page is general information, not legal advice. Statutes change — verify against the official text linked above or consult a local attorney before acting.