How Much Does a Divorce Cost in Illinois in 2026?
How much does a divorce cost in Illinois? An uncontested divorce costs $300 to $1,500 if you file yourself, and $2,000 to $5,000 with a lawyer. A contested divorce runs $15,000 to $40,000 or more in 2026. The filing fee ranges from $250 to $388, with Cook County the highest at $388.
The cost of divorce in Illinois comes down to one thing: whether you and your spouse agree. An agreed case is cheap and fast, while a contested one is neither. This guide breaks down the filing fees, the cost by type, and how to keep your Illinois divorce affordable.
Quick Answer: Illinois Divorce Costs at a Glance
Here is how much a divorce costs in Illinois in 2026, at a glance. The filing fee is fixed by your county, but the total depends on how your case unfolds. An agreed divorce stays in the low hundreds to a few thousand dollars. A contested one climbs into the tens of thousands.
| Cost factor | Illinois (2026) |
|---|---|
| Court filing fee | $250 to $388 (Cook County $388) |
| Uncontested total (DIY) | $300 to $1,500 |
| Average with a lawyer | $3,000 to $12,000 |
| Contested divorce | $15,000 to $40,000 or more |
| Typical timeline | 1 to 3 months agreed; 9 to 18 months contested |
Filing Fees and Court Costs in Illinois
The divorce filing fee in Illinois ranges from $250 to $388, depending on your county. Cook County, which covers Chicago, charges the highest at $388, while smaller downstate counties charge closer to $250. The responding spouse pays a separate appearance fee, roughly $110 to $250 by county. These fees are set locally, so confirm the exact amount with your circuit court clerk.
The cost to file for divorce in Illinois is just the start of your court costs. You may also pay for service of process, certified copies of the judgment, and a parenting class if you have children. If you cannot afford the filing fee, Illinois lets you request a fee waiver under Supreme Court Rule 298. Low-income filers who qualify pay nothing to file.
For how filing fees compare across the country, see our guide to divorce filing fees by state. Illinois sits in the middle to upper range nationally. The divorce filing fee in Illinois is higher than many states but lower than California. Fees change, so always verify with your local clerk.
How Much Does a Divorce Cost in Illinois by Type?
How much a divorce costs in Illinois depends mostly on the type of divorce you pursue. A simple uncontested case costs a fraction of a contested one. The table below shows the typical total for each path in 2026. Your path is set by how much you and your spouse agree.
| Divorce type | Typical total cost (2026) |
|---|---|
| DIY uncontested (file yourself) | $300 to $1,500 |
| Uncontested with a lawyer | $2,000 to $5,000 |
| Mediated divorce | $3,000 to $8,000 |
| Contested divorce | $15,000 to $40,000 or more |
A simple divorce in Illinois costs the least when you file it yourself and agree on everything. How much a simple divorce costs in Illinois is usually just the filing fee plus small extras, landing at $300 to $1,500. The uncontested divorce Illinois cost rises to $2,000 to $5,000 if you add a flat-fee lawyer. For the cheapest path, see our uncontested divorce guide.
What Affects How Much a Divorce Costs in Illinois
Several factors decide how much a divorce costs in Illinois, and conflict is the biggest. The more you and your spouse disagree, the more you pay in legal time. Children, property, and your location all add to the bill too. Here is what moves the number up or down.
Children raise the cost, especially if custody is disputed. Illinois requires a parenting education program in most counties when children are involved, which adds a small fee. A custody fight adds far more through evaluations and extra hearings. Dividing a home, a business, or retirement accounts also increases the cost.
Your location within Illinois matters as well. Chicago and Cook County lawyers charge more than downstate attorneys, tracking the higher cost of living. Illinois divorce attorney fees run roughly $250 to $400 per hour, with Chicago at the top end. The average cost of divorce in Illinois reflects this split between the metro and the rest of the state.
How to Keep Divorce Costs Down in Illinois
You can keep the cost of divorce in Illinois low by avoiding a court fight. The biggest savings come from agreeing with your spouse before you involve lawyers. A few practical moves make a real difference. Here are the most effective ones.
- Agree before you file. Settling the terms yourselves turns a contested case into a cheap uncontested one.
- Use mediation. A mediator resolves disputes for a few thousand dollars instead of tens of thousands.
- Use a flat-fee or limited-scope lawyer. Pay only for a document review or one issue rather than full hourly work.
- Request a fee waiver. If your income is low, Illinois waives the filing fee entirely.
For more ways to cut the bill, read our cheap divorce guide. Illinois also offers free self-help resources. The state’s Illinois Legal Aid Online and Illinois Courts self-help center provide free forms and guidance.
Illinois Divorce Filing Steps (Summary)
Filing for divorce in Illinois follows a clear process, especially when your case is uncontested. Illinois is a pure no-fault state, so you file on the ground of irreconcilable differences. Here are the main steps.
- Meet the residency requirement. At least one spouse must have lived in Illinois for 90 days before the court finalizes the divorce.
- Confirm your grounds. Irreconcilable differences is the only ground, and living apart six months creates a presumption, which spouses can waive by agreement.
- Get the forms. Use the state’s approved statewide forms, available free from the Illinois Courts website.
- File the petition and pay the fee. Submit your petition for dissolution of marriage and pay the filing fee, or request a waiver.
- Serve your spouse. Notify your spouse, who then files an appearance with the court.
- Reach an agreement or go to a hearing. Illinois has no mandatory waiting period, so an agreed case can move quickly.
- Finalize the divorce. The judge signs the judgment for dissolution of marriage, ending the marriage.
Frequently Asked Questions
How much a divorce costs in Illinois ranges from a few hundred dollars for an agreed DIY case to $40,000 or more for a contested one. The filing fee is $250 to $388, but the real cost is driven by conflict, not the court. Agree with your spouse, and you keep it cheap and fast. To estimate your own number, try our divorce cost calculator or read our pillar guide on how much a divorce costs.
