Divorce in Illinois

What This Means for Your Divorce Filing in Illinois

Filing for divorce in Illinois costs $210–$350 at the courthouse — the first financial barrier most self-represented filers face. Cook County ~$315. Other counties $210-$350. Fee waivers available. Beyond the filing fee, no mandatory waiting period applies, and the typical case timeline is Uncontested: 2-4 months. Contested: 1-3 years.. Because Illinois courts operate at the state and county level, local surcharges, service-of-process fees, and motion filing fees can add meaningfully to the out-of-pocket total. Every person whose household income falls below roughly 125–200% of the federal poverty line can apply for a fee waiver (sometimes called "in forma pauperis") with the court clerk.

Procedurally, Illinois lays out 6 distinct steps, and the clerk typically requires 5 core document categories to open your case. Residency rules matter: 90 days in Illinois before filing; 90 days before hearing. Grounds or legal theory must be stated clearly in the initial petition — No-fault only (irreconcilable differences). Missing a required element, filing in the wrong venue, or failing to perfect service within the statute-of-limitations window can cause dismissal without prejudice, forcing you to refile and pay the fee again.

This is public court-fee and procedural data, not legal advice. Outcomes in divorce cases depend heavily on facts, evidence, documentation, and the judge assigned. If your matter is contested, involves minor children, real property, significant debts, domestic violence, or immigration consequences, consult a licensed Illinois attorney or contact your state legal-aid office before filing. Data on this page was last verified 2026-03 against Illinois court sources; always confirm the current fee schedule with the clerk before paying.