Short answer: A Missouri security deposit lawsuit can recover “twice the amount wrongfully withheld” under RSMo § 535.300.6, once the landlord’s 30-day deadline to return the deposit or send an itemized list has passed. You file in small claims court, a part of the associate circuit court that hears cases up to $5,000 under RSMo § 482.305, and either side who loses can ask for a fresh trial within ten days.
Missouri security deposit lawsuit: quick reference
| Rule | Missouri | Statute |
|---|---|---|
| Return deadline | 30 days after the tenancy ends: full deposit, or an itemized list of damages with the balance | § 535.300.3 |
| Allowed deductions | Unpaid rent, restoring move-in condition (ordinary wear and tear excepted), actual losses from inadequate notice to move | § 535.300.4 |
| Move-out inspection | Written notice of the date and time; you may attend | § 535.300.5 |
| Penalty | Twice the amount wrongfully withheld | § 535.300.6 |
| Small claims limit | $5,000, not counting interest or costs | § 482.305 |
| Where to file | County where a defendant lives, or where the facts happened | § 482.330.4 |
| New trial after judgment | Application for trial de novo within ten days | § 482.365.2 |
What makes a withholding “wrongful” in Missouri
The double-damages rule turns on what the landlord kept and why. Section 535.300.4 allows a landlord to withhold “only such amounts as are reasonably necessary” for three reasons:
- to cover rent you owed under the rental agreement;
- to restore the unit to its condition at the start of the tenancy, “ordinary wear and tear excepted”; and
- to cover actual losses from your failure to give adequate notice to end the tenancy, provided the landlord makes reasonable efforts to mitigate.
Anything else, such as charging a departing tenant for routine repainting after years of normal living, falls outside the list. Section 535.300.6 then says the tenant “shall recover as damages twice the amount wrongfully withheld.”
The carpet-cleaning exception
Missouri has a specific carve-out. Section 535.300.4(2) lets a lease set carpet-cleaning amounts or fees, and lets the landlord withhold the amount actually spent, but only if the lease also tells you that you may be liable for actual carpet-cleaning costs beyond ordinary wear and tear. Within thirty days after the tenancy ends, the landlord must give you a receipt for the actual cost. No clause, or no receipt, and the charge is open to challenge.
The 30-day list and the inspection notice
Under § 535.300.3, within thirty days after the tenancy ends, the landlord must either return the full deposit or give you “a written itemized list of the damages” along with the balance. Mailing the statement and any payment to your last known address counts as compliance, so give the landlord a forwarding address in writing.
Missouri also guarantees you a seat at the walk-through. Section 535.300.5 requires reasonable written notice, at your last known address or in person, of the date and time of the move-out inspection, held at a reasonable time, and gives you the right to be present. If no notice came, say so at the hearing and bring your own move-out photos.
Before you file: the demand letter
Section 535.300 does not require a demand letter. Sending one after day 30 is still worth the stamp. It sets out your numbers, quotes the double-damages rule in subsection 6, and becomes an exhibit showing you tried to resolve things. The security deposit demand letter template walks through what to include. Give a short, firm deadline, then file.
One thing you may not do while still living there: subsection 7 says nothing in § 535.300 permits a tenant to apply any part of the deposit in place of rent. Using the deposit as last month’s rent invites a counterclaim.
Filing in Missouri small claims court
Small claims is a function of the associate circuit judge. Under § 482.305, the judge sitting as a small claims court hears civil cases where the amount in controversy does not exceed $5,000, exclusive of interest or costs. Because the doubled amount is your damages claim, keep it at or under $5,000.
Venue rules are in § 482.330.4. You can file where at least one defendant resides, where you reside and a defendant may be found, or where the facts giving rise to the claim took place. For a deposit, the rental’s county usually works. When you file, you sign a statement that you are not an assignee of the claim and have not filed more than twelve other small claims that calendar year.
You do not need a lawyer. Section 482.310 lets parties present claims and defenses without one, and lets a corporate landlord appear through an officer or authorized employee. Under § 482.335, small claims clerks must explain the procedure and help you fill out the forms.
On cost, § 482.345 requires court costs and a deposit for costs in amounts set under sections 488.010 to 488.020, plus advance payment for service. Totals differ by county, so ask the circuit clerk for the current small claims filing and service amounts. Under § 482.350, service can be made by certified mail, return receipt requested, restricted to the addressee, unless you ask for personal service.
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Evidence to bring
- The lease, including any carpet-cleaning clause, and proof of the deposit amount.
- Your written forwarding address and the date the tenancy ended.
- The landlord’s itemized list and its envelope, or proof that nothing arrived within 30 days.
- The inspection notice, or a note that you never got one, under § 535.300.5.
- Dated move-in and move-out photos, especially of walls, floors and appliances.
Use our move-out checklist to build the photo set before you leave.
Worked example: Carla in Springfield
Carla paid a $1,500 deposit on a Springfield apartment. Her lease ended July 31, so the landlord had until August 30 to respond. On August 20 she received an itemized list keeping $1,000: $250 for carpet cleaning, backed by a lease clause and a receipt, and $750 to repaint walls that showed only ordinary wear after three years.
The carpet charge followed § 535.300.4(2). The $750 for repainting did not fit any reason in subsection 4. Carla filed in Greene County small claims for twice the $750 wrongfully withheld, or $1,500, under § 535.300.6, well under the $5,000 limit.
After the hearing: trial de novo and collection
Missouri small claims rulings are not the last word. Under § 482.365.2, any party aggrieved by a final small claims judgment, other than a consent judgment, may have a trial de novo by filing an application with the small claims clerk within ten days after judgment. The statute adds that an application does not stay execution unless the applicant posts a recognizance with approved sureties.
Know one limit on collection: § 482.365.1 says no small claims judgment is a lien on real estate. If the landlord does not pay after the ten days pass, ask the clerk about execution against the landlord’s non-exempt property or money.
Frequently Asked Questions
Is Missouri’s penalty twice the deposit or twice what was kept?
Twice what was wrongfully kept. Section 535.300.6 measures damages as “twice the amount wrongfully withheld,” so a properly documented deduction is not doubled.
Can my Missouri landlord charge for carpet cleaning?
Only the actual amount spent, and only if the lease set carpet-cleaning terms and warned you about actual costs beyond ordinary wear and tear. The landlord must give you a receipt within thirty days, under § 535.300.4(2).
Does Missouri award attorney’s fees in deposit cases?
Section 535.300 contains no attorney’s fee provision. Section 482.345.3 lets the small claims judge, in its discretion, award the fees and assess the costs described in that section.
What if I lose in small claims?
You can file an application for trial de novo with the small claims clerk within ten days after the judgment, under § 482.365.2. The case is then heard again from the start.
Can a landlord keep money because I broke the lease early?
Only for actual damages from inadequate notice, and only if the landlord made reasonable efforts to mitigate, such as trying to re-rent, under § 535.300.4(3).
Your next step: check the date the landlord’s 30 days ran out, compare each deduction against the three reasons in § 535.300.4, and file in your county’s small claims court for twice anything that doesn’t fit. Our Missouri security deposit law guide covers the deposit cap and bank rules, and the deposit lawsuit by state hub compares other states. This is general information, not legal advice; for free help, find a legal aid office through LSC.