How to file for divorce in Illinois: a step-by-step guide

Last updated 2026-07-10

What are the basic requirements to file for divorce in Illinois?

Illinois has three threshold requirements. Meet all three and you can start your paperwork today.

First, residency. At least one spouse must have lived in Illinois for 90 days before the judgment of dissolution is entered. That's the rule under 750 ILCS 5/401(a). You don't need 90 days before you file the petition, but the clock has to run out by the time the judge signs. Most people just wait until they've hit the 90-day mark before filing, to keep the case clean. ^[1]

Second, jurisdiction. You file in the circuit court of the county where either spouse lives. Live in Cook County, file in Cook County. Your spouse lives in DuPage while you're in Wisconsin? File in DuPage. That's it.

Third, grounds. Illinois is a pure no-fault state. The only ground is "irreconcilable differences," and since a 2016 amendment to the Illinois Marriage and Dissolution of Marriage Act, you don't have to prove the marriage is broken or live apart for any set period. If both spouses agree the marriage is over, that agreement satisfies the standard. ^[1]

That 2016 change matters. Couples used to live separately for two years (or six months by agreement) before a no-fault divorce. That waiting period is gone. The Illinois courts self-help material states plainly that irreconcilable differences means the marriage has broken down and cannot be saved. ^[2]

What forms do you need to file for divorce in Illinois?

Illinois uses standardized statewide forms, maintained by the Illinois Supreme Court, that work in every county circuit court. You don't have to hunt for county-specific versions, which is a real convenience compared to states where each county runs its own show.

The core forms for an uncontested divorce:

Petition for Dissolution of Marriage (form HFD-1101): The document that starts your case. One spouse (the petitioner) files it. It lists names, addresses, date of marriage, date of separation, grounds (irreconcilable differences), and what you're asking the court to order.

Summons: After filing, the court issues a summons that gets served on the respondent spouse.

Entry of Appearance / Waiver of Service: If your spouse knows about the divorce and agrees, they sign a Waiver of Service and Entry of Appearance. That skips process server fees entirely.

Marital Settlement Agreement (MSA): This is where the real work sits. The MSA spells out how you split property and debt, whether either spouse pays maintenance, and, if you have children, how you handle parenting time and child support. A complete, signed MSA is what makes a divorce truly uncontested. Our divorce papers overview breaks down what each document actually does.

Parenting Plan: Required if you have minor children. The plan has to address decision-making responsibility (legal custody) and the parenting time schedule. Courts read these carefully. ^[3]

Child Support Worksheets: Illinois uses an income shares model. You'll need both spouses' income figures to run the numbers. ^[4]

Judgment for Dissolution of Marriage: The final order the judge signs. In uncontested cases, the petitioner usually drafts it and the court approves it.

All statewide forms are free to download at illinoiscourts.gov. ^[2] Some counties add local supplemental forms, so check your circuit court's self-help page. Cook County, for example, runs a Domestic Relations Division with extra local requirements. ^[5]

If you want the whole set pre-assembled and filled in, a $149 document packet (like ours at DivorceClear.com) saves hours of form-hunting and cuts the risk of a clerk rejecting your stack over a clerical slip. You can also assemble everything yourself from the court's free downloads. Both paths are legitimate.

How much does it cost to file for divorce in Illinois?

Filing fees run roughly $209 to $337 for the petitioner, depending on your county. Each circuit court sets its own schedule, so the number in Chicago is not the number in Kane County. Here's what the major counties charge, based on their posted fee schedules:

County	Approximate Filing Fee (Petitioner)	Respondent Appearance Fee
Cook County	$337	$207
DuPage County	$264	$176
Lake County	$263	~$100
Will County	$226	~$100
Kane County	$209	~$100

These come from each county's circuit clerk fee schedule and can change without much notice. Verify with your clerk before you walk in. ^[5][6]

Beyond the filing fee, budget for:

Process server or sheriff service: Roughly $50 to $100 if your spouse won't sign a waiver. The county sheriff serves papers for around $60 in most Illinois counties.

Certified copies: Usually $2 to $6 per page. Get at least two certified copies of your final judgment.

Parenting class fee: If you have minor children, most Illinois courts require both parents to finish a parenting education class. Fees run $25 to $75 per person, and many courts accept online courses. ^[3]

Total out-of-pocket for a true DIY uncontested divorce with no kids: roughly $260 to $450 depending on county.

If money is a real barrier, Illinois has a fee waiver. File an Application for Waiver of Court Fees. If the court approves it, your filing fees disappear. ^[2]

What is the step-by-step process to file for divorce in Illinois?

Here's the full sequence, from first paperwork to final judgment, in an uncontested case.

Step 1: Confirm the residency requirement. One of you needs 90 days of Illinois residency before the judgment is entered. Mark the date on a calendar. ^[1]

Step 2: Complete your forms. Fill out the Petition for Dissolution of Marriage. If you and your spouse already have a full agreement, prepare the Marital Settlement Agreement too, plus a Parenting Plan if you have kids. Finishing all of it before you file lets you hand everything to the judge at once.

Step 3: File with the circuit court clerk. Bring your completed Petition (and any companion forms) to the Domestic Relations Division of your county circuit court clerk. Bring two copies of everything: one for the court, one for you. Pay the filing fee. The clerk stamps your documents and assigns a case number. You are now the petitioner.

Step 4: Serve your spouse. Required even in friendly divorces. Your options: your spouse signs a Waiver of Service (free, fast, and what I'd push for), you hire a process server ($50 to $100), or the county sheriff serves them for a small fee. Once served, the respondent has 30 days to file an appearance. ^[1]

Step 5: Your spouse files an Entry of Appearance. In an agreed case, your spouse files a one-page Entry of Appearance confirming they're participating. No formal answer to the petition is required if everything is uncontested.

Step 6: File your settlement agreement and supporting documents. Once your MSA, Parenting Plan (if applicable), and child support worksheets are signed by both parties, file them with the clerk. The court reviews them for completeness.

Step 7: Attend the final prove-up hearing. In an uncontested case, this is quick, usually 5 to 15 minutes. The petitioner answers a few questions confirming residency, that the marriage is broken beyond repair, and that the agreement was signed voluntarily. The judge signs the Judgment for Dissolution. You're divorced. ^[2]

In Cook County, uncontested cases without children can sometimes be resolved on written submissions, without appearing in person, though judges' practices vary. Ask your clerk.

Total time from filing to final judgment in a genuinely uncontested Illinois divorce: as few as 4 to 8 weeks in rural counties with light dockets, and 2 to 5 months in Cook County, which carries heavier caseloads.

How long does a divorce take in Illinois?

There is no mandatory waiting period between filing and finalizing in Illinois. The 2016 amendments killed the old six-month separation requirement for no-fault cases, so the legal floor is short. ^[1]

Four things actually set your timeline.

Court docket speed. Cook County is the slowest. Its judges carry huge caseloads, so a straightforward uncontested divorce there realistically takes 3 to 5 months from filing to judgment. The collar counties (DuPage, Lake, Will, Kane) often move faster, in the 4 to 10 week range.

Whether both spouses cooperate. A case where both parties have signed everything moves far faster than one where service drags, an appearance stalls, or one spouse keeps rewriting the MSA.

Children in the case. The court independently reviews parenting plans and child support math, and in some counties a guardian ad litem gets appointed. That adds months.

The 90-day residency rule. File on day 60 if you want, but the judge can't sign until day 90.

With everything agreed, all forms clean, and a responsive court calendar, a real minimum is about 4 to 6 weeks. Plan for 2 to 4 months as the honest expectation in most counties.

How does property division work in an Illinois divorce?

Illinois is an equitable distribution state, not a community property state. Marital property gets divided fairly, and fair does not always mean an even split. ^[1]

Marital property is generally everything either spouse acquired during the marriage, no matter whose name is on the title. Separate property (things you owned before the marriage, plus gifts and inheritances received by one spouse during it) stays with the original owner, as long as it wasn't commingled with marital assets.

In an uncontested divorce, you and your spouse divide property however you agree. The judge reviews your MSA to confirm it isn't unconscionable, but courts almost never reject a division both spouses signed.

Three things trip couples up: the marital home, retirement accounts, and debt. For the home, couples typically sell and split the proceeds, one spouse buys out the other, or they defer the sale to a set event (like the youngest child turning 18). For retirement accounts, you'll likely need a Qualified Domestic Relations Order (QDRO) to split a 401(k) or pension without triggering taxes and penalties. A QDRO is a separate legal document that the plan administrator processes after the divorce judgment.

Debt works the same way. Any debt taken on during the marriage is generally marital debt. Your MSA can assign specific debts to each spouse, but that only binds the two of you. Creditors aren't parties to your divorce. If your spouse gets assigned a joint credit card and stops paying, the creditor can still come after you. Refinancing joint debt into individual accounts is the only real protection.

How does child custody and support work in an Illinois divorce?

Illinois swapped the terms "legal custody" and "physical custody" for "allocation of parental responsibilities" and "parenting time" back in 2016. The idea is the same: one document, the Parenting Plan, covers both decision-making authority and the schedule of when each parent has the child. ^[3]

Decision-making (the old legal custody) covers major calls about education, healthcare, religion, and extracurriculars. It can be shared jointly or handed mainly to one parent.

Parenting time is the actual schedule. Illinois courts start from a presumption that both parents should have meaningful time with the child. A parenting plan is required whenever minor children are involved, and courts won't sign off on a vague one. You need specific dates, holiday schedules, and a written process for resolving disputes.

Child support runs on the Income Shares Model, in effect since July 1, 2017, under 750 ILCS 5/505. Both parents' net incomes are combined, a support obligation is read off a statutory table, then divided proportionally. ^[4] The Illinois Department of Healthcare and Family Services publishes the income shares worksheet and schedule. Run our child support calculator for a ballpark before you sit down with your spouse.

If you agree to a support amount that differs from the guideline, you have to explain in writing why the deviation serves the child's best interest. Judges look hard at low-support agreements.

For background on what courts expect, the Illinois courts self-help center has a parenting section with downloadable plan templates. ^[2]

What is maintenance (alimony) in Illinois and do you have to pay it?

Illinois calls it "maintenance," not alimony, but it's the same thing: one spouse pays the other periodic support after the divorce. Under 750 ILCS 5/504, courts weigh a long list of factors, including each spouse's income and needs, the length of the marriage, the standard of living during it, each party's earning capacity, and contributions to the other spouse's career or education. ^[1]

For marriages under 5 years, maintenance is rarely ordered, and it runs short when it is. For marriages over 20 years, courts may award maintenance for an indefinite period.

Illinois sets statutory guidelines for the amount. Take 33.3% of the payer's net annual income, subtract 25% of the recipient's net annual income, and that's the annual maintenance figure. The combined maintenance plus the recipient's own income can't exceed 40% of the parties' combined net income. Duration follows a formula tied to how long the marriage lasted.

In an uncontested divorce, you can waive maintenance entirely, agree to a fixed amount, or agree to a lump sum. All of it goes in the MSA. Courts generally accept maintenance waivers when both parties freely agree. Our alimony guide goes deeper on how courts figure duration and amount in longer marriages.

Can you file for divorce in Illinois without a lawyer?

Yes. You have an absolute right to represent yourself in Illinois circuit court. Self-represented litigants in family law cases are called pro se parties, and Illinois courts are required to make forms and instructions available to you. The Illinois Supreme Court's self-help centers at illinoiscourts.gov exist for exactly this. ^[2]

Uncontested divorces with a clean agreement are the best candidates for going it alone. If you and your spouse agree on everything, your property is simple, and you either have no children or have a parenting plan you both like, you may not need an attorney at all.

Where DIY gets risky: contested cases, hidden assets, an uncooperative spouse, a business to value, or complex retirement accounts that need QDROs. In those spots, paying a divorce attorney for an hour of advice is worth it even if you end up filing yourself.

Want a middle path? A few Illinois family law attorneys offer "unbundled" or limited-scope help. They'll review your MSA for a flat fee (often $300 to $700) without taking the whole case. That's a sensible safety net.

The Illinois State Bar Association runs a lawyer referral service that connects you with attorneys who offer initial consultations. ^[7] Many county bar associations have similar programs.

What happens after you file? Understanding the Illinois court process

Once you file your Petition and serve your spouse, the case moves through the system on a fairly predictable track.

The respondent has 30 days after service to file a written appearance. In an agreed case, they file an Entry of Appearance (usually one page) and a Waiver of Notice. That tells the court they know about the case and aren't contesting it.

Your case gets assigned to a judge or a family law calendar. In Cook County, Domestic Relations cases run through the Daley Center. In most other counties, there's a single family law judge or a rotating assignment.

If children are involved, the court may set a status hearing just to confirm the parenting plan is complete and support was calculated under the guidelines. Some judges order both parents to finish a co-parenting class before approving the plan. ^[3]

At the final hearing (the prove-up), you appear before the judge, answer questions confirming the facts in your petition, confirm your agreement is voluntary and fair, and the judge enters the judgment. The clerk issues a certified copy of your Judgment for Dissolution of Marriage. That's your divorce decree. Get at least two certified copies: one to keep permanently, one to use for name changes or beneficiary updates.

Here's the step people forget. After the judgment, update your beneficiaries on life insurance, retirement accounts, and bank accounts. Those designations override your will, so an ex-spouse can still collect your retirement funds if you never change the forms. If you're restoring a prior name, change it on your Social Security card and driver's license. Illinois lets you do the name restoration inside the divorce judgment itself. ^[8]

For the full picture of post-divorce cleanup, our divorce papers overview explains how to use your judgment for those administrative tasks.

Where do you file for divorce in Illinois and what are the local court resources?

You file in the circuit court of the county where either spouse lives. Illinois has 102 counties and 24 judicial circuits.

The biggest by volume is Cook County (Chicago), handled by the Circuit Court of Cook County's Domestic Relations Division. It has its own forms, a law library, and a Self-Help Center at the Daley Center, 50 W. Washington Street. ^[5]

For every other county, start at illinoiscourts.gov to find your circuit court. Most circuit clerks now accept electronic filing for new petitions through the eFileIL system, though a few counties still require in-person filing for Domestic Relations cases. Call your clerk to confirm before you drive in. ^[9]

Many Illinois circuit courts have Self-Represented Litigant Coordinators: court staff (not lawyers) who answer procedural questions and help you find the right forms. They can't give legal advice, but they can tell you whether your stack looks complete before you hand it to the clerk.

Illinois Legal Aid Online (illinoislegalaid.org) is a strong free resource. It has guided interview tools that produce completed divorce forms from your answers, at no cost. ^[10] If you'd rather skip the DIY form assembly, DivorceClear.com offers a $149 complete uncontested divorce packet built for Illinois requirements.

Low income? Prairie State Legal Services and other regional legal aid organizations offer free or reduced-cost help with family law cases. The Illinois Legal Aid Online site has an intake locator that points you to the right office. ^[10]

Frequently asked questions

How long do you have to live in Illinois before filing for divorce?

Under 750 ILCS 5/401(a), at least one spouse must be an Illinois resident for 90 days before the court can enter a judgment of dissolution. You can technically file before the 90 days is up, but the judge can't finalize the divorce until the residency requirement is met. Most people wait until they've been a resident for 90 days before filing, to avoid any procedural snags.

How much does it cost to file for divorce in Illinois without a lawyer?

Filing fees vary by county. Cook County charges about $337 for the petitioner; most other Illinois counties run $209 to $280. Add $50 to $100 for process service if your spouse won't sign a waiver, and $2 to $6 per page for certified copies of your judgment. Total out-of-pocket for a true uncontested DIY divorce typically runs $260 to $450, not counting document preparation costs.

Can I file for divorce in Illinois if my spouse doesn't agree?

Yes. Illinois lets one spouse file unilaterally. If your spouse won't agree to the divorce or doesn't respond after being served, you can request a default judgment after 30 days. The court can grant the divorce without your spouse's participation. A contested divorce where property, custody, or support is disputed will take much longer and almost certainly needs an attorney.

Do you have to be separated before filing for divorce in Illinois?

No. Illinois dropped the mandatory separation period in 2016. Before that, couples had to live apart for six months (or two years without mutual consent) to file a no-fault divorce. Now you just allege irreconcilable differences. You can be living together and still file. No waiting period is imposed based on when the marriage broke down.

What forms are needed for an uncontested divorce in Illinois?

The core forms are the Petition for Dissolution of Marriage (HFD-1101), a Summons or Waiver of Service, a Marital Settlement Agreement, and the Judgment for Dissolution of Marriage. If you have minor children, add a Parenting Plan and child support worksheets. All Illinois Supreme Court statewide forms are free to download at illinoiscourts.gov. Some counties require extra local forms, so check your circuit court's website.

How long does an uncontested divorce take in Illinois?

There is no mandatory waiting period. In practice, an uncontested Illinois divorce with all documents in order takes 4 to 8 weeks in smaller counties with light dockets. Cook County usually takes 2 to 5 months because of heavier caseloads. The 90-day residency rule is the only legally required delay. Incomplete paperwork, slow service, and scheduling backlogs are the real time-killers.

What is the difference between contested and uncontested divorce in Illinois?

An uncontested divorce means both spouses agree on every term: property division, debt, maintenance, parenting time, and child support, all captured in a signed Marital Settlement Agreement. A contested divorce means at least one issue is disputed and a judge has to decide. Uncontested divorces are faster and much cheaper. They're fully legal and open to any couple who can reach a complete written agreement.

Can I get a divorce in Illinois if my spouse lives in another state?

Yes. As long as you meet Illinois's 90-day residency requirement, you can file here even if your spouse lives elsewhere. Illinois courts have jurisdiction over you regardless of where your spouse is. You'll need to serve your spouse in their state, which may mean following that state's service rules. The Illinois court can grant the divorce itself, though dividing real property in another state can require extra steps.

Does Illinois require a parenting class before finalizing a divorce with children?

Most Illinois circuit courts require both parents to complete a parenting education program before the divorce is finalized when minor children are involved. The requirement comes from local court rules rather than one statewide statute. Course fees typically run $25 to $75 per person, and many approved providers offer online formats. Check your county's standing orders or ask the clerk when you file.

How is child support calculated in Illinois?

Illinois uses the Income Shares Model under 750 ILCS 5/505, in effect since July 1, 2017. Both parents' net incomes are combined and applied to a statutory table to set a combined support obligation, which is then split proportionally by income. If you agree to an amount below the guideline, you must explain in writing why it serves the child's best interest. The Illinois Department of Healthcare and Family Services publishes free worksheets.

Can I change my name as part of my Illinois divorce?

Yes. You can request a name restoration (returning to a prior legal name) directly in your Petition for Dissolution of Marriage and in the final Judgment. The judge includes the name change in the decree. After you get your certified copy, use it to update your Social Security card at the SSA, then your Illinois driver's license at a Secretary of State facility. No separate court proceeding is needed.

What happens if one spouse hides assets during an Illinois divorce?

Illinois law requires both spouses to make full financial disclosure. If you suspect hidden assets, a contested divorce with formal discovery tools (subpoenas, depositions, document requests) is the right path. Judges take undisclosed assets seriously: courts can set aside a final judgment and reopen property division if fraud turns up. Self-represented litigants rarely have the tools to uncover hidden assets, so consulting an attorney is strongly worth it here.

Do both spouses have to appear in court for an Illinois divorce?

In an uncontested case, typically only the petitioner appears for the final prove-up hearing. The respondent's signed Entry of Appearance and agreement to the MSA often satisfies the court without their physical presence. In Cook County, some uncontested cases can be finalized on written submissions with no in-person appearance at all, depending on the judge. Check with your clerk about local practice before assuming you can skip the hearing.

Is Illinois a 50/50 divorce state for property?

No. Illinois is an equitable distribution state, not a community property state. Courts divide marital property fairly, which often lands near equal but is not automatically 50/50. Factors like each spouse's economic circumstances, contributions to the marriage, and the length of the marriage all shape the outcome. In an uncontested divorce, you and your spouse can agree to any split you both find fair, and courts generally approve it as long as it isn't grossly unconscionable.

Sources

1. Illinois General Assembly, Illinois Marriage and Dissolution of Marriage Act, 750 ILCS 5/401: Residency requirement of 90 days before judgment; irreconcilable differences as sole ground; equitable distribution standard; maintenance calculation formula under 750 ILCS 5/504 and 5/505.
2. Illinois Courts, Self-Help Center (illinoiscourts.gov): Statewide standardized forms for dissolution of marriage are free to download; fee waiver application available; court materials confirm the irreconcilable differences standard.
3. Illinois Courts, Parenting Plans and Allocation of Parental Responsibilities: Parenting Plan required in all cases with minor children; parenting education program required by most circuit courts before divorce finalization.
4. Illinois Department of Healthcare and Family Services, Income Shares Child Support Model: Illinois adopted the Income Shares Model for child support calculations effective July 1, 2017, under 750 ILCS 5/505; combined net income applied to statutory schedule.
5. Circuit Court of Cook County, Clerk of the Circuit Court: Cook County petitioner filing fee approximately $337; Domestic Relations Division located at the Daley Center, 50 W. Washington Street, Chicago.
6. DuPage County, Circuit Court Clerk Fee Schedule: DuPage County filing fee approximately $264 for petitioner; respondent appearance fee approximately $176.
7. Illinois State Bar Association, Lawyer Referral Service: ISBA lawyer referral service connects self-represented individuals with attorneys offering initial consultations for family law matters.
8. Social Security Administration, Change Your Name on Your Social Security Card: A certified copy of a court-issued divorce judgment is an accepted document for restoring a prior name on a Social Security card.
9. Illinois Courts, eFileIL Electronic Filing: Most Illinois circuit clerks accept electronic filing of new petitions through the eFileIL system; some counties still require in-person filing for Domestic Relations cases.
10. Illinois Legal Aid Online (illinoislegalaid.org): Free guided interview tools produce completed Illinois divorce forms; intake locator for legal aid organizations statewide.