When there is no will in Illinois

Who inherits under the state's intestacy law, and what that means for the people left to sort things out.

Last updated May 11, 2026. Sources are linked at the bottom of the page.

No will does not mean no plan

When someone dies without a valid will, the state's intestacy law decides who inherits. It is a fixed formula based on who survived them: spouse, children, parents, siblings, and so on. The court still appoints someone to settle the estate; they just follow the statute instead of a will. Assets with a named beneficiary, joint accounts, and trust property are not affected by any of this.

Who inherits in Illinois

If spouse and descendants survive, spouse takes half and descendants share the other half. If only spouse, spouse takes all. If only descendants, descendants share. Otherwise parents, siblings, more remote heirs.

Governing statute	755 ILCS 5/2-1
Read the statute	ilga.gov/legislation/ilcs/ilcs5.asp?ActID=2104

Two things families get wrong

Unmarried partners inherit nothing under intestacy. No matter how long the relationship, intestacy law in nearly every state recognizes only legal spouses and blood or adopted relatives. A partner's protection comes from beneficiary designations, joint ownership, or a will that was never written.
Stepchildren usually are not heirs unless they were legally adopted. The statute above is the authority for your state.

The estate may still qualify as a small estate

Having no will does not rule out the simplified procedure. If the estate meets Illinois's small-estate limits, the shortcut is usually available. See probate in Illinois for the threshold.

Want this organized for your situation? The free walkthrough asks a few questions about who died, where, and your relationship to them, and builds a checklist for the first days and weeks in Illinois.

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Primary sources

755 ILCS 5/2-1: ilga.gov/legislation/ilcs/ilcs5.asp?ActID=2104