Dissipation of Marital Assets in Illinois Divorce

When one spouse wastes, hides, or transfers marital money for purposes unrelated to the marriage, Illinois law calls it dissipation. Under 750 ILCS 5/503(d)(2), the court treats dissipated funds as if they still exist in the marital estate — meaning the spouse who wasted them gets credited with having already received that amount in the final property division.

If your spouse spent $40,000 of marital funds on gambling, gifts to a new partner, or luxury purchases during the marriage breakdown, that $40,000 gets charged against their share of the property split.

What Qualifies as Dissipation

Dissipation requires three elements:

1. Marital funds were used — the spending came from marital assets, not separate property
2. For non-marital purposes — the spending didn't benefit the family or the marriage
3. After the marriage began breaking down — the irretrievable breakdown must have already started

Common examples: spending on an extramarital partner (hotels, gifts, trips), gambling losses, excessive personal shopping, transferring assets to family members to hide them, or running up credit card debt on non-family expenses.

What's not dissipation: reasonable living expenses, paying the mortgage, buying groceries, funding the children's activities — even if the spouses are separated. Spending that benefits the family doesn't qualify, regardless of whether the other spouse approved.

The Notice and Timing Requirements

Illinois imposes strict procedural rules for dissipation claims:

Filing deadline: The claim must be filed no later than 60 days before trial or 30 days after discovery closes, whichever is later.

Required details: The notice must specify:

• The date or period when the marriage began breaking down
• The specific property or funds dissipated
• The dates of dissipation

Look-back limits:

• 3-year limit (known): Claims are barred for spending that occurred more than 3 years after the claiming spouse knew or should have known about it
• 5-year limit (unknown): Claims are barred for spending that occurred more than 5 years before the petition was filed

These look-back limits prevent one spouse from dredging up spending decisions from decades ago.

How the Burden of Proof Shifts

The claiming spouse starts by making a prima facie showing of abnormal spending — unusual withdrawals, unexplained account drawdowns, or spending patterns that changed dramatically around the time the marriage deteriorated.

Once that threshold is met, the burden shifts to the accused spouse, who must prove by clear and convincing evidence that the spending served a legitimate marital purpose. "I don't remember what that was for" doesn't satisfy this standard.

Finding Hidden Assets

Sometimes the issue isn't wasteful spending but deliberate concealment. Spouses may transfer assets to family members, underreport income, create shell accounts, or delay bonuses and commissions until after the divorce.

A forensic accountant can:

• Trace fund movements through bank and credit card records
• Identify lifestyle inconsistencies (spending that exceeds reported income)
• Analyze business financials for hidden income or inflated expenses
• Reconstruct deleted or concealed financial records

Forensic accounting typically costs $5,000 to $15,000 depending on complexity, but the recovery from identified dissipation or hidden assets often far exceeds this cost.

What Happens in the Property Division

If the court finds dissipation occurred, the dissipated amount is added back to the marital estate for calculation purposes, then charged against the dissipating spouse's share. The non-dissipating spouse effectively gets credit for assets that no longer exist.

Example: A marital estate of $300,000 in actual assets, plus $50,000 in proven dissipation. The court divides a $350,000 estate. If the split is roughly equal, the dissipating spouse receives $175,000 minus $50,000 = $125,000 from actual assets; the other spouse receives $175,000.

Documenting Your Claim

Start gathering evidence early:

• Bank and credit card statements showing unusual withdrawals or charges
• Records of spending on non-family members
• Evidence of asset transfers to relatives or new accounts
• Screenshots of luxury purchases or travel during the breakdown period

The Illinois Divorce Financial Split Guide includes a dissipation tracking worksheet designed to organize spending evidence in the format Illinois courts require.

See more Illinois guides →