Illinois Divorce Property Division — Equitable Distribution Explained (2026)

Illinois divides marital property equitably — fair, but not automatically 50/50. Here's how it works and what it means for your divorce.

Equitable Distribution in Illinois

Illinois Statute 750 ILCS 5/503 requires courts to divide marital property in just proportions based on the relevant factors. This means:

  • Courts start roughly equal in most cases
  • Factors can justify an unequal division
  • In agreed divorces, you set your own terms — courts approve reasonable agreements

Marital vs. Non-Marital Property

Marital property:

  • Acquired by either spouse during the marriage (regardless of title)
  • Income earned during the marriage
  • Retirement contributions during the marriage
  • Appreciation of marital property

Non-marital property:

  • Acquired before marriage
  • Received by gift or inheritance during marriage
  • Acquired after legal separation
  • Excluded by prenuptial or postnuptial agreement
  • Judgment awards for personal injuries (except medical expenses and lost wages)

Illinois's treatment of commingled property: If non-marital property is mixed with marital property to the point it can't be identified as non-marital, it becomes marital property. Keep non-marital assets separate.

Illinois Equitable Distribution Factors

Courts consider:

  • Each spouse's contribution to acquiring and maintaining marital property
  • Dissipation of marital assets (wasteful spending, gambling, etc.)
  • Value of each spouse's non-marital property
  • Duration of the marriage
  • Economic circumstances of each spouse at time of division
  • Tax consequences
  • Whether either spouse will be a custodial parent affecting career or asset use
  • Any prior obligations (prior family obligations)
  • Agreements between the parties
  • Any other relevant factors

Maintenance (Alimony) in Illinois

Illinois uses "maintenance" rather than "alimony." Key points:

  • Either spouse can request maintenance
  • Courts consider income disparity, standard of living during marriage, duration, and each spouse's needs and earning capacity
  • Illinois uses a formula for maintenance duration in marriages under 20 years
  • In an agreed divorce, both spouses can waive maintenance entirely
  • Include a clear waiver in your MSA: "Both parties waive any claim to maintenance, now and in the future."

Retirement Accounts in Illinois

Illinois-specific note: Illinois has many public pension systems that require special handling:

  • IMRF (Illinois Municipal Retirement Fund) — for county and municipal employees
  • TRS (Teachers' Retirement System) — for public school teachers
  • SURS (State Universities Retirement System) — for university employees
  • SERS (State Employees' Retirement System) — for state employees
  • CTPF (Chicago Teachers' Pension Fund) — Chicago-specific

Each of these systems has its own requirements for dividing benefits in divorce. They are NOT divided by a standard QDRO — each system has its own qualification order process.

Fix: If your spouse has a public pension in Illinois, contact the specific plan administrator BEFORE drafting your MSA to understand what's required.

FAQ

What if my spouse dissipated marital assets (gambling, hiding money, etc.)? Illinois courts treat dissipation as a factor in equitable distribution. Document any suspected dissipation with bank records, account statements, and other evidence. This situation benefits significantly from attorney representation.

Can I get more than half because I stayed home to raise children? Illinois considers each spouse's contributions to the marriage — including as a homemaker and caregiver. Non-financial contributions are recognized. Courts can adjust the distribution accordingly.

Last reviewed: March 2026

Last reviewed: March 2026 · Verify current fees and forms with your local court before filing.