Contested vs. Uncontested Divorce in Illinois: Costs, Timeline, and Process

The difference between contested and uncontested is not a filing choice you make at the start — it is a status that depends on whether both spouses agree on every term. An uncontested case can become contested the moment either side disputes a single issue. Understanding both tracks helps you plan for the one you are actually in.

Uncontested: Agreement on Everything

An uncontested divorce means both spouses have reached a full agreement on property division, debts, maintenance, and (if applicable) parenting time and child support. The process is administrative:

1. File the petition and serve the respondent (or have them sign an Entry of Appearance)
2. Exchange financial disclosures
3. Submit the signed Marital Settlement Agreement
4. Attend a prove-up hearing where the judge confirms the agreement under oath

Cost: Filing fee ($300 to $400) plus service of process ($0 to $100 depending on method). No attorney required for straightforward cases.

Timeline: 6 to 8 weeks without children; 3 to 4 months with children (parenting education and the 120-day parenting plan deadline add time).

Contested: Disagreement on Any Issue

A divorce is contested when the spouses cannot agree on one or more terms — the value of a retirement account, who keeps the house, how parenting time is split, or whether maintenance is owed. The case enters a litigation track:

1. Formal discovery — interrogatories, document requests, depositions, and potentially forensic accounting or business valuations
2. Status conferences — regular court dates where the judge monitors the case and pushes toward settlement
3. Mandatory mediation — required for parenting disputes before the case can go to trial
4. Pretrial motions — motions to compel discovery, temporary support orders, and motions in limine
5. Trial — bifurcated in Illinois. The court first determines whether irreconcilable differences exist, then separately tries the financial and custody disputes

Cost: Average contested divorce in Illinois runs $10,000 to $30,000 with attorney fees. Hourly rates for family law attorneys typically range from $200 to $400.

Timeline: 12 to 18 months is typical. Complex cases with business valuations, dissipation claims, or high-conflict custody disputes can exceed two years.

When Uncontested Flips to Contested

This transition is common and often catches self-represented filers off guard. An uncontested case becomes contested when:

• One spouse hires an attorney, creating a structural advantage
• Negotiations stall over a specific asset (home equity, retirement accounts, a vehicle)
• One parent wants a parenting schedule the other rejects
• A spouse refuses to cooperate with financial disclosures, raising suspicion of hidden assets
• New information surfaces — undisclosed debts, an affair that dissipated marital funds

Once contested, the court schedules a case management conference and the discovery process begins. Going back to uncontested requires resolving every disputed issue, which sometimes happens through mediation.

Annulment: A Third Path

An annulment (declaration of invalidity) is not a version of divorce — it is a legal finding that the marriage was never valid. Illinois grants annulments only under narrow circumstances defined in 750 ILCS 5/301: one party lacked capacity to consent (age, mental state, intoxication), the marriage was procured by fraud or duress, or one party was physically unable to consummate the marriage.

Annulments are rare and require specific evidence. If the marriage was legally valid when it happened, divorce is the only option.

Which Path Should You Prepare For?

If you and your spouse agree on everything and neither expects disagreements, the uncontested path is straightforward. But prepare for the possibility that it could shift — have your financial records organized, know the statutory property division rules, and understand what triggers a contested case so you can address issues before they escalate.

The Illinois Divorce Filing Process Guide covers both the uncontested and default paths in detail, including the document checklists, filing sequences, and decision points that determine which track your case follows.

See more Illinois guides →