Divorce in Illinois follows a defined legal process — but that doesn't make it feel any less overwhelming when you're in the middle of it. Understanding what to expect, step by step, can help you approach the process more clearly and make better decisions for yourself and your family.
Illinois is a no-fault divorce state, which means neither party needs to prove wrongdoing. The sole ground for divorce in Illinois is "irreconcilable differences" — a legal acknowledgment that the marriage has broken down beyond repair. What this means in practice is that the process focuses on resolving practical matters: division of assets and debts, spousal support (called "maintenance" in Illinois), and if children are involved, custody and parenting time.
The process typically begins with one spouse filing a Petition for Dissolution of Marriage in the county circuit court. The other spouse is then served with the petition and summons. From there, the court may schedule preliminary hearings, and both parties will engage in a process called "discovery" — exchanging financial information, disclosures, and documentation relevant to the division of assets and support calculations. Many divorces in Illinois resolve through negotiated settlement agreements. If the parties cannot agree, the case proceeds to trial, where a judge makes the final decisions. Throughout this process, having an attorney who knows Illinois law — and knows it well — makes a material difference in outcomes.