Missouri Small Claims Court Rules

Missouri small claims court is simpler than regular court, but it still has rules — and some of them catch people off guard. The wrong assumption about who can represent a business, what evidence is allowed, or how deadlines work can end a case before it starts.

The Governing Framework

Small claims in Missouri is governed by RSMo Chapter 482 (the statute) and Supreme Court Rules 140 through 152 (the procedural rules). Where the small claims rules are silent, the court falls back to the regular Associate Circuit Division procedures — as long as they do not conflict with Chapter 482.

This dual layer matters in practice. The small claims rules cover filing, service, hearings, and appeals. General civil rules fill gaps on things like subpoenas, motions, and fee waivers.

Evidence Rules Are Relaxed — Not Eliminated

The formal rules of evidence are loosened in small claims. The judge can consider contracts, invoices, photos, text messages, emails, and repair estimates without the strict foundation requirements that apply in regular civil court.

But "relaxed" does not mean "anything goes." You still need to organize your evidence in a way the judge can follow. The standard practice: prepare three complete, identical sets of all documents — one for the judge, one for the opposing party, and one for yourself. Print text messages and emails rather than reading off your phone. The judge cannot pass your phone around the courtroom.

Audio recordings and videos should be on a USB drive or printed as transcripts. Live witness testimony carries more weight than written statements or affidavits, which are generally treated as hearsay unless both sides agree to admit them.

No Jury — Ever

Rule 144.04 prohibits jury trials in the small claims division. Every case is a bench trial decided by an Associate Circuit Judge. You waive the right to a jury when you sign the petition (form SC40).

Representation Rules

Individuals and sole proprietors can represent themselves. An LLC must appear through a licensed attorney, but corporations have a small-claims exception: RSMo § 482.310 permits an officer or authorized employee to appear for a corporation in the Small Claims Division. If a case proceeds to a Trial De Novo in the regular Associate Circuit Division, the entity must follow that division's representation rules.

This rule bites small business owners who assume they can represent their own company. If you are the sole member of an LLC and you want to file in small claims, you either hire an attorney or file as yourself individually — and accept that the judgment runs against you personally, not the entity.

Service and Timing Rules

Service must be completed at least 10 calendar days before the hearing date (Rule 142.02). If service happens too late, the judge cannot proceed over the defendant's objection and must reschedule.

The defendant does not have to file a written answer. They can simply show up at the hearing and present their defense orally.

Counterclaims must be filed within 10 calendar days of receiving the summons using form SC10. A counterclaim over $5,000 kicks the entire case out of small claims and into the regular Associate Circuit Division.

The Trial De Novo Rule

After a judgment, either side has 10 calendar days to file an Application for Trial De Novo (form CV50) under RSMo § 482.365. This is not an appeal on the record — it is a brand new trial in the Associate Circuit Division under regular civil rules. The 10-day deadline runs from the date the judge signs the judgment, not the date you receive the notice in the mail. Missing it makes the judgment final.

Filing the appeal does not automatically stop the winning side from collecting. To halt enforcement, you need a supersedeas bond.

The 12-Case Cap

A plaintiff may not file a small-claims action if they have already filed more than 12 other claims in Missouri small claims courts during the current calendar year (RSMo § 482.330). The SC40 petition requires the plaintiff to certify they meet this restriction. Debt buyers and assignees are barred entirely.

For the full procedural walkthrough — from demand letter through the hearing and beyond — see our Missouri Small Claims Filing Guide.

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