Missouri Rent Late Fees

No Missouri statute caps late fees or mandates a grace period for residential rent. Chapter 441 contains no late-fee provision, so the charge is a matter of contract: it must be clearly stated in the lease to be enforceable. Missouri courts apply the general liquidated-damages doctrine — a late fee must approximate the landlord's actual loss from late payment and not operate as a punitive penalty, or a court may decline to enforce it. There is no statutory percentage or dollar ceiling for residential leases (the $20-or-20% reasonableness benchmark in RSMo 415.417 applies to self-service storage, not dwellings). Because no statute requires it, a landlord may charge a late fee on the first day rent is overdue unless the lease provides otherwise.

No specific statutory penalty. An excessive or unreasonable late fee may be struck down by a court as an unenforceable penalty rather than valid liquidated damages, leaving the landlord unable to collect it.