Divorce in Illinois

Overview of Illinois Divorce Law

Since January 2016, Illinois has been an exclusively no-fault divorce state. The Illinois Marriage and Dissolution of Marriage Act (IMDMA), as amended, eliminated all fault-based grounds and replaced them with a single standard: irreconcilable differences that have caused the irretrievable breakdown of the marriage. The court will find irreconcilable differences if the spouses have lived separate and apart for a continuous period of at least six months, though living under the same roof can still qualify as living “separate and apart” if the relationship has broken down.

This shift to pure no-fault means that neither spouse needs to prove adultery, cruelty, or any other misconduct. The focus of the proceedings is entirely on resolving practical matters such as property division, support, and parenting responsibilities.

Residency and Filing Requirements

To file for divorce in Illinois, at least one spouse must have been a resident of the state for a minimum of 90 days before the petition is filed. There is no separate county residency requirement, making Illinois one of the more accessible states for filing. The case is typically filed in the circuit court of the county where either spouse resides.

If both spouses agree that the marriage is irretrievably broken, the court may waive the six-month separation period. When the parties do not agree, the six-month separation requirement serves as evidence that efforts at reconciliation have failed.

Equitable Distribution: How Illinois Divides Assets

Illinois follows the equitable distribution model. The court divides marital property in proportions it deems just, considering a list of statutory factors rather than defaulting to a fifty-fifty split. Relevant factors include:

• Each spouse’s contribution to the acquisition, preservation, or increase in value of marital property
• The duration of the marriage
• The economic circumstances of each spouse at the time of division
• Any prior obligations from a previous marriage
• Whether property was acquired before or during the marriage
• The age, health, and employability of each party

Non-marital property, such as assets owned before the marriage, inheritances, and gifts directed to one spouse, is generally not subject to division unless it has been commingled with marital assets.

Spousal Support (Maintenance)

Illinois uses a statutory formula for calculating maintenance when the combined gross income of both spouses is under a specified threshold (currently $500,000). The formula sets both the amount and the duration of maintenance based on the length of the marriage. For marriages of twenty years or more, the court may award indefinite maintenance.

Courts may deviate from the formula in cases involving significant disparity in income, advanced age, or other circumstances that make a formulaic result unjust. The goal of maintenance is to allow the lower-earning spouse to maintain a reasonable standard of living while transitioning toward financial independence.

The Illinois Divorce Process

1. Filing the Petition — One spouse files a Petition for Dissolution of Marriage with the circuit court and pays the filing fee.
2. Service of Process — The petition must be served on the other spouse, who then has thirty days to file an appearance and response.
3. Financial Disclosures — Both parties are required to exchange financial affidavits disclosing income, expenses, assets, and liabilities.
4. Parenting Plan (if applicable) — When children are involved, the parties must submit a proposed parenting plan or attend mediation to develop one.
5. Negotiation or Mediation — Most Illinois divorces settle through negotiation or mediation. Courts in many counties require mediation for custody and parenting disputes.
6. Trial (if needed) — If the parties cannot agree, a judge will hear evidence and decide contested issues at trial.
7. Judgment for Dissolution — Once all matters are resolved, the court enters a Judgment for Dissolution of Marriage.

When to Consult an Attorney

Although Illinois allows pro se filing, the IMDMA’s provisions on property classification, maintenance calculations, and parenting allocations involve significant complexity. Legal representation is strongly recommended when the marriage involves substantial assets, business ownership, disputes over parenting time, or situations where one spouse has significantly more financial knowledge or power than the other. An experienced Illinois family law attorney can ensure that your rights are protected and that financial disclosures are thorough and accurate.