Sue an LLC in Small Claims Court Missouri

When the person who owes you money is a business rather than an individual, small claims gets more complicated. Missouri has specific rules about how you name a business on the petition, where you serve it, and who can represent it in court. Getting any of these wrong means a judgment you cannot enforce — or no judgment at all.

Find the Legal Entity Name

The name on the storefront, the name on the invoice, and the legal entity name are often three different things. A plumber doing business as "ProFlow Plumbing" might be registered with the Missouri Secretary of State as "ProFlow Services, LLC" — or might not appear in the search. A missing result alone does not establish the business's legal structure.

Start with the Missouri Secretary of State business entity search at sos.mo.gov. Search by the business name and look for the exact legal entity name, the entity type (LLC, corporation, general partnership), and the registered agent's name and address.

If nothing comes up, verify the business name and defendant identity before treating the business as a sole proprietorship. If it is a sole proprietor, name the individual owner, adding "d/b/a [trade name]" — for example, "John Smith d/b/a ProFlow Plumbing."

Naming the Defendant on the Petition

LLC: Use the exact name from the Secretary of State database. "ProFlow Services, LLC" — not "ProFlow," not "ProFlow Plumbing," not "ProFlow LLC." The registered legal name is what the court system recognizes. A judgment against the wrong name is unenforceable.

Corporation: Same rule. Use the exact corporate name followed by its suffix (Inc., Corp., etc.).

Partnership: Name and serve each individual general partner.

Sole proprietor with a DBA: Name the individual owner and add the trade name. "John Smith d/b/a ProFlow Plumbing."

Service Goes to the Registered Agent

For LLCs and corporations, you serve the petition and summons on the entity's registered agent at the address on file with the Secretary of State — not the business owner personally, not the storefront, not the corporate office. The registered agent is the person or company designated to receive legal documents on behalf of the entity.

If the registered agent's address is outdated or the agent has resigned, check the Secretary of State's business records for the current registered agent. Use Case.net to track the court case and service returns after filing. Some businesses use commercial registered agent services (like CT Corporation or United Agent Group) that maintain dedicated offices for accepting service.

When the Entity Needs a Lawyer

This catches many small business owners off guard. An LLC must appear through a licensed attorney, including in small claims court. 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. A different representation rule applies in a Trial De Novo in the regular Associate Circuit Division.

For an LLC, this applies in both directions. If you are suing an LLC, and the LLC's owner shows up without a lawyer, the owner cannot speak for the company. If you own an LLC and want to file a small claims case for the company, you need to hire a licensed Missouri attorney. You can file in your own name only if the claim belongs to you personally; any judgment and recovery would be yours, not the entity's.

What About Sole Proprietors?

Sole proprietors are individuals. They can represent themselves in small claims court without an attorney, file their own petitions, and testify on their own behalf. The DBA is just a name registration, not a separate legal entity.

Practical Considerations

If the business is an LLC and your claim is under $5,000, consider whether it makes more sense to sue the individual member personally (if they made the agreement in their own name or personally guaranteed it) rather than the entity. An individual defendant does not need an attorney and you serve them directly at their home or workplace — simpler all around.

For the full walkthrough — including a defendant identification worksheet and step-by-step service instructions — see our Missouri Small Claims Filing Guide.

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