How Much Does Divorce Cost in Illinois (2026)

Every Illinois divorce has cost components that vary based on your specific situation. Here's how the numbers break down in Illinois.

**Court filing fees: $337-$388.** Filing fee is $337 in Cook County. Other counties range from $200-$388. This is a one-time cost paid by the petitioner (the spouse who files). The respondent may pay a separate answer fee. If you cannot afford the filing fee, you can apply for a fee waiver — most Illinois courts grant waivers for households below 125% of the federal poverty level.

**Attorney fees: the biggest variable.** At the Illinois average of $350 per hour (Clio Legal Trends Report 2025), costs depend heavily on case complexity. In Chicago, family law attorneys charge $350-500/hour, while attorneys in smaller cities and rural areas charge $200-300/hour. An uncontested divorce may require 10 hours of attorney time ($3500-$5250), while a contested divorce can require 40+ hours ($10500-$21000+). Most Illinois attorneys require an upfront retainer of $2800-$5250. For help understanding how attorney costs affect your post-divorce finances, try our after-tax income calculator.

**Mediation costs: $2240-$7875.** A trained mediator in Illinois typically costs $280-$525 per hour, and most divorces settle in 1-3 full-day sessions. Many Illinois courts encourage or require mediation before trial. Compared to a full trial — which can cost $15,000-$30,000+ in attorney time alone — mediation saves significant money.

**Child-related costs: $2,500-$5,000+.** Cases involving minor children require a parenting plan covering custody, visitation, and child support. If parents cannot agree, the court may order a custody evaluation ($2,500-$5,000) or appoint an attorney to represent the child's interests. Illinois courts use the "best interest of the child" standard when making custody determinations. If you're planning for life after divorce, our home affordability calculator can help you understand what you can afford on a single income.

**1. Contested vs. uncontested — the single biggest factor.** An uncontested divorce in Illinois requires roughly 10 hours of attorney time, costing $2625-$5250 in legal fees. A contested divorce requires 40+ hours — $10500-$21000+ — because every disputed issue requires negotiation, discovery, and potentially trial preparation.

**2. Children.** Divorces with minor children cost more because they require a parenting plan, child support calculations using Illinois's guidelines, and potentially a custody evaluation. Illinois courts use the "best interest of the child" standard, and judges may order psychological evaluations or appoint an attorney for the child.

**3. Marital property complexity.** **Equitable distribution.** Illinois divides property equitably — fairly, but not necessarily equally — under 750 ILCS 5/503. Judges consider factors like marriage length, each spouse's earning capacity, and contributions to the marriage. A couple with a home and retirement accounts faces a straightforward division. A couple with a business, multiple properties, or stock options may need forensic accountants ($5,000-$15,000) and business valuators ($3,000-$10,000). For insight into how property division affects your future finances, see our capital gains tax calculator — selling divided assets may trigger tax liability.

**4. Location within Illinois.** Attorney rates in Chicago ($350-500/hour) are significantly higher than rural areas ($200-300/hour). The same divorce can cost thousands more depending on where you file.

**5. Attorney experience level.** A board-certified family law specialist in Illinois charges $350-500/hour but may resolve complex issues faster. A newer attorney charges $200-300/hour but may require more hours. Balance cost per hour against total hours needed.

**6. Willingness to negotiate.** Couples who communicate directly or through mediators spend less on attorney time. Every issue resolved outside of court saves 5-10 hours of billable work at Illinois's average rate of $350/hour — that's $1750-$3500 per issue.

Here are proven strategies to keep your Illinois divorce costs down.

**Pursue an uncontested divorce.** If you and your spouse can agree on property division, custody, and support, an uncontested divorce in Illinois costs roughly $2962-$5587 total. Compare that to $10837-$21337+ for a contested case. The difference is entirely in attorney hours — 10 hours vs. 40+ hours at $350/hour. If you're comparing costs across states, see our divorce calculators for Indiana and Iowa.

**Use mediation before litigation.** Even though Illinois doesn't mandate it, mediation resolves the majority of disputes at a fraction of the trial cost. A full mediation in Illinois typically costs $2240-$7875 total, while a trial can cost $15,000-$30,000+ in attorney fees alone. Many Illinois mediators also offer sliding-scale rates.

**Consider unbundled legal services.** Many Illinois attorneys offer "limited scope representation" where they handle specific tasks (reviewing agreements, appearing at hearings) rather than the full case. This can reduce total legal costs by 40-60% for relatively simple divorces.

**Organize your financial documents early.** Attorney time spent gathering bank statements, tax returns, retirement account statements, and property deeds is billable time you could save by having these ready before your first meeting. Our savings goal calculator can help you plan for post-divorce financial goals.

**Apply for a fee waiver.** If your household income is at or below 125% of the federal poverty level, you may qualify for a waiver of the $337 filing fee in Illinois. The application is available from your county clerk's office. Learn more about how we verify our data and the sources we use for these estimates.