Dividing assets is only half of the financial picture in an Illinois divorce. Marital debt, and in some cases outright financial misconduct, plays just as large a role in how a settlement takes shape. At KHK Family Law & Divorce Attorneys, we regularly help Chicago area clients untangle who owes what, and just as importantly, who should be held responsible when one spouse has wasted marital funds. With over 20 years of family law experience and a Master’s in Social Work from the University of Chicago, Attorney Matthew Katz brings both legal precision and a practical understanding of the financial stress divorce can create.
How Illinois Divides Marital Debt
Illinois law generally treats marital debt the same way it treats marital property. In practice, that means the court typically subtracts outstanding debt from the value of the marital estate before deciding how to split what remains. If the marital estate is worth $500,000 and the couple owes $100,000 in debt, for example, the court starts from a baseline of $400,000 and then applies whatever division it considers equitable, whether that is 50-50, 60-40, or another split based on the circumstances.
This approach keeps the process relatively predictable for couples who accumulated debt together, such as a shared credit card used for household expenses or a joint loan taken out for a family purchase.
When One Spouse Is Responsible for More Debt
Not all debt is shared equally in practice, and Illinois courts recognize that. When both spouses regularly used the same credit cards or took on debt together, a judge is likely to divide that debt equally, consistent with how the rest of the marital estate is split. But when one spouse ran up significant debt alone, whether through a gambling habit, reckless spending, or credit cards the other spouse never knew existed, courts often assign that debt specifically to the spouse who created it rather than spreading the burden evenly.
The same statutory factors that guide property division, including each spouse’s earning capacity, custodial responsibilities, and ability to become self-supporting, can also apply to how debt gets allocated. This gives a judge meaningful flexibility to reach a result that reflects what actually happened during the marriage rather than a rigid formula.
What Counts as Dissipation of Marital Assets
Beyond ordinary debt, Illinois law also addresses a more serious issue: dissipation of marital assets. Dissipation occurs when one spouse wrongfully uses marital funds for their own purposes while the marriage is undergoing an irretrievable breakdown. The classic example is a spouse who spends heavily on an affair, whether on gifts, trips, or other expenses meant to benefit someone outside the marriage, at a point when the relationship is already falling apart.
When a court finds that dissipation occurred, it typically awards a credit to the other spouse equal to the amount that was wrongfully spent. This does not undo the spending, but it does prevent the responsible spouse from effectively keeping more than their fair share of the marital estate.
Filing a Dissipation Claim: Deadlines and Procedure
Dissipation claims come with real procedural requirements, and missing them can cost a spouse the ability to recover anything at all. A claim must be filed with the court and formally served on the other spouse before trial; it cannot be raised for the first time once a case is already underway. Illinois law also imposes a five year lookback period, meaning dissipation that occurred more than five years before the divorce petition was filed generally will not be considered, even if it clearly happened.
Because of these strict timing rules, spouses who suspect financial misconduct should raise the issue with a divorce attorney as early as possible rather than waiting until closer to trial.
Why These Cases Can Be Hard to Prove
Dissipation and hidden debt cases often turn on financial records rather than testimony alone, which means bank statements, credit card histories, and business accounts frequently become central pieces of evidence. A spouse who suspects the other has been hiding debt, running up credit cards in secret, or spending marital money on someone outside the marriage needs to start gathering documentation as early as possible, since records can be harder to obtain the further a case moves from the actual spending.
Courts also expect a credible timeline. It is rarely enough to simply allege that a spouse spent recklessly; the claim needs to connect specific transactions to a period when the marriage was already breaking down, since spending that happened well before any real marital discord will not qualify as dissipation, even if it looks unreasonable in hindsight.
Protecting Your Financial Interests
Whether you are trying to make sure you are not held responsible for debt your spouse ran up alone, or you believe your spouse dissipated marital assets during the breakdown of your marriage, the financial side of divorce deserves the same careful attention as custody or support. KHK Family Law & Divorce Attorneys has more than 70 years of combined experience helping clients across the Chicago area protect what they are owed, with a team that includes bilingual staff fluent in English and Spanish.
If debt or financial misconduct is part of your divorce, our team can help you understand your options and build a clear strategy going forward.
Every financial situation looks different, and the right strategy for a couple with shared credit cards and modest savings looks nothing like the strategy for a case involving a hidden business account or a years long pattern of secret spending. That is why an initial conversation with our office starts with listening, so we can map out which issues are likely to matter most in your specific case before recommending next steps.
