One of the first things couples need to understand when dividing assets in an Illinois divorce is that not everything they own is subject to division. Illinois law distinguishes between marital property, which gets divided between spouses, and non-marital property, which stays with the spouse who owns it. Getting this distinction right before drafting any agreement matters a great deal for both parties.
What Illinois Law Considers Marital Property
Under 750 ILCS 5/503, marital property is broadly defined as all property acquired by either spouse during the marriage, regardless of whose name is on the title. That’s a wider net than most people expect.
A car bought during the marriage in one spouse’s name is marital property. A retirement account contributed to during the marriage is marital property. A savings account opened after the wedding in one spouse’s name alone is marital property. The title doesn’t control the classification in Illinois. The timing of acquisition does.
Marital property is subject to equitable distribution in a divorce. That doesn’t necessarily mean a 50/50 split, but it does mean the court, or in an uncontested divorce the parties themselves, need to address every marital asset in the settlement agreement.
What Stays Non-Marital
Illinois law carves out several categories of property that might remain non-marital regardless of when they were acquired:
- Property owned by one spouse before the marriage if its never used in the marriage
- Gifts received by one spouse individually, even during the marriage
- Inheritances received by one spouse, even during the marriage
- Property acquired after a legal separation
- Property excluded from marital classification by a valid prenuptial or postnuptial agreement
- Compensation for personal injury, excluding compensation for lost wages or medical expenses
The key is that non-marital property keeps its classification only if it remains separate. Once non-marital property gets mixed with marital property, things get complicated quickly.
The Commingling Problem
Commingling happens when non-marital and marital assets get mixed together in a way that makes them difficult to separate. Common examples include:
- Depositing an inheritance into a joint bank account used for household expenses
- Using pre-marital savings to make mortgage payments on a jointly owned home
- Making joint improvements to property one spouse owned before the marriage
Once assets are commingled, tracing the non-marital portion requires documentation and sometimes expert analysis. In a contested divorce, this can become expensive and complicated. In an uncontested divorce, couples often negotiate around these issues rather than tracing every dollar, which is one reason why having a clear conversation about what each party brought into the marriage helps before drafting the agreement.
An O’Fallon affordable divorce lawyer helps couples think through these classification questions carefully, so the settlement agreement accurately reflects what’s marital, what isn’t, and how each category gets addressed.
How Appreciation of Non-Marital Property Is Treated
What happens when non-marital property grows in value during the marriage? Illinois distinguishes between passive appreciation and active appreciation.
Active appreciation, meaning growth that results from the efforts or contributions of either spouse during the marriage, can be treated as marital. If one spouse owned a business before the marriage and the other spouse contributed meaningfully to its growth during the marriage, the appreciation attributable to those contributions may be subject to division.
This distinction matters most in cases involving real estate, businesses, and investment portfolios. For couples with simpler asset pictures, the distinction may not come up at all.
Why Getting This Right in an Agreed Divorce Matters
In an uncontested divorce, the parties decide for themselves how to characterize and divide their assets. That flexibility is one of the advantages of an agreed divorce. But an agreement that misclassifies property, or that fails to address all marital assets, can create problems down the road if either party later claims the agreement was incomplete or unfair.
Flat Fee Divorce Solutions helps O’Fallon area couples work through property classification carefully and document their division accurately under Illinois law. If you and your spouse have reached your agreements and are ready to move forward, reach out to an O’Fallon affordable divorce lawyer to get started.
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