If you are thinking about ending your marriage, the process can feel overwhelming. The good news is that Illinois follows a clear legal path. Knowing the first step helps you move forward with confidence and avoid costly mistakes.
What is the first step in getting a divorce?
The first step in getting a divorce in Illinois is filing a Petition for Dissolution of Marriage with the appropriate circuit court. This document officially starts your case and tells the court that you want to dissolve your marriage.
In your petition, you must include key details such as:
- Basic information about you, your spouse, and your marriage.
- Confirmation that you meet Illinois residency requirements.
- A statement that irreconcilable differences caused the breakdown of the marriage.
- Your requests regarding property, support, and, if applicable, child-related matters.
Once you file the petition, the court assigns your case a number and opens your divorce proceeding.
Make sure you meet Illinois requirements
Before filing, you need to confirm that you qualify to file in Illinois. You can do this if:
- You or your spouse has lived in Illinois for at least 90 days before filing.
- You file in the correct county where either spouse resides.
Illinois is a no-fault divorce state. That means you do not need to prove wrongdoing. You only need to state that the marriage has broken down due to irreconcilable differences.
What happens after you file?
Filing the petition is only the beginning. After that, you must take additional steps to move your case forward.
You must formally notify your spouse by serving them with the divorce papers. This ensures they have an opportunity to respond.
Your spouse typically has 30 days to file an appearance and response. If they do not respond, you may request a default judgment.
Begin negotiations or court proceedings
From there, your case may move in different directions depending on your situation. You might:
- Negotiate a settlement agreement.
- Attend mediation, especially in cases involving children.
- Proceed to court if you and your spouse cannot agree.
Why starting correctly matters
Filing your petition properly sets the tone for your entire case. Errors or missing information can delay your divorce or weaken your position. Taking the time to prepare a complete and accurate petition helps you:
- Protect your financial interests.
- Clarify your goals early.
- Reduce unnecessary conflict.
While you can file on your own, many people benefit from legal guidance. A divorce attorney can help you draft your petition, avoid procedural errors, and develop a strategy tailored to your goals. This is especially important if your case involves:
- Children or custody disputes.
- Significant assets or debts.
- Concerns about support or hidden income.
Starting a divorce in Illinois begins with one clear action: filing your Petition for Dissolution of Marriage. Once you take that step, you set the legal process in motion.
If you feel unsure, you do not have to navigate it alone. With the right preparation and support, you can move forward in a way that protects your future and gives you greater peace of mind.

