How Do You File a Small Claims Case for a Withheld Deposit in Illinois?

The Illinois rule in one table

| Court | Small Claims Division of the Clerk of the Circuit Court | | Limit | 10,000 dollars, exclusive of interest and costs | | Filing | Complaint and summons, by e-File or at the clerk office, with a filing fee | | Attachment | A copy of the lease or contract must attach to the complaint | | Service | Certified mail for an in-state defendant, mailed by the clerk, sheriff, or licensed special process server | | Fee waiver | Available from a judge | | Costs | The losing party may be ordered to reimburse the winner court costs |

What makes Illinois different

Illinois is the service first state in this family. The court has no power over the landlord until the landlord is served, so service is not a formality at the end of the filing, it is the step that gives the case effect. Certified mail works only for an in-state defendant and is mailed by the clerk, so an out-of-state landlord needs the sheriff or a licensed special process server instead.

The second Illinois difference is the limit and the paper. The amount claimed cannot exceed 10,000 dollars, exclusive of interest and costs, and a copy of the lease or contract must attach to the complaint. County filing fees vary, and Cook County fees run higher than downstate counties, so check the filing fee with the clerk of the county where you file. Tenants in Chicago should also check whether the Chicago Residential Landlord and Tenant Ordinance adds steps to their claim; this guide covers the statewide small claims filing process.

The process, step by step

1. Write the complaint and summons, keeping the amount claimed at or under 10,000 dollars, exclusive of interest and costs.
2. Attach a copy of the lease or contract to the complaint.
3. File by e-File or at the clerk office, and pay the county filing fee, or ask a judge for a fee waiver.
4. Serve the landlord by certified mail if the landlord is in state, or by the sheriff or a licensed special process server otherwise.
5. Appear on the return date. A non-appearing defendant risks a default judgment, and the losing party may be ordered to reimburse the winner court costs.

Related Illinois guides

See Replace a Lost Car Title in Illinois and Disability Placard and Plates in Illinois, and the full hub at Illinois Admin Process Directory.

Source

Filing, limit, service, and fee waiver facts on this page come from the 19th Judicial Circuit Court: Filing and Serving a Small Claims Complaint, and the Illinois Supreme Court Rule 281 limit. Facts verified 2026-10-26.

This page explains how the process works and what the official rules say. It is general information, not legal advice. For a dispute about your specific situation, talk to a lawyer or your state agency.