When someone dies without a valid will, the law calls it dying intestate, and it does not mean the state simply takes everything. It means something most people find more surprising: Illinois has already written a will for you, in the form of its intestate succession statute, and that law, not your wishes, decides who inherits and in what shares. This guide explains exactly how that works in Illinois, who gets what, and why so many families plan to avoid it.
If you die intestate in Illinois, your property passes under a fixed order set by the Illinois Probate Act. The shares depend on who survives you:
Notice what is missing from that list. Illinois intestate law makes no provision for a stepchild you helped raise, an unmarried partner, a close friend, or a charity you cared about. None of them inherit, no matter how close the relationship was, because the statute only recognizes legal relatives.
The inheritance shares are only part of it. Dying intestate also makes the whole process harder and more expensive for the people you leave behind.
Because there is no will naming an executor, the estate still has to go through the Illinois probate court, but now the court appoints an administrator instead of someone you chose. Illinois law sets who has priority to serve, usually the surviving spouse, then adult children, then other next of kin, and that person typically has to post a surety bond and operate under closer court supervision. Opening the estate, identifying the legal heirs, and distributing the property is what we handle as intestate administration.
Proving who the legal heirs actually are can also be surprisingly complicated, especially in blended families, estranged relationships, or when relatives are hard to locate. The court requires heirship to be established before anything is distributed, which adds time and cost to an already difficult moment. Working with an executor of estate attorney keeps that process on track.
If you have minor children and die without a will, the consequence goes beyond money. A will is the only document that lets you nominate the guardians you want raising your children. Without one, that decision is left entirely to a judge who never knew your family. The court will try to act in the children's best interest, but it is choosing in the dark, and family members may end up in conflict over who should serve. Naming a guardian is one of the simplest reasons to have a will, and one of the most important.
Dying without a will is not a small estate problem. It strips you of three choices at once: who inherits, who administers your estate, and who raises your children.
The good news is that avoiding intestacy is straightforward. A valid will replaces the state's default plan with your actual wishes: it names who inherits, names your executor, and nominates guardians for your children. For many families, pairing that will with a funded living trust goes further by keeping the estate out of probate altogether. If you are weighing those options, our guide on will vs. trust in Illinois breaks down which one fits which situation.
It is also worth understanding the cost side. Probate for an intestate estate is not free, and it often costs more in time and money than the planning that would have prevented it. We cover the numbers in how much probate costs in Illinois.
Dying without a will is entirely avoidable, and putting a basic plan in place is one of the most valuable things you can do for your family. We help Illinois families create wills and trusts that reflect their actual wishes, and when a loved one has already passed without a will, we guide families through intestate administration in the probate court. Learn more on our estate planning page.
Illinois intestate succession law sets a fixed order. A surviving spouse and children split the estate (half to the spouse, half among the children); a spouse with no children inherits everything; children with no spouse share equally; and if there is no immediate family, the estate passes to parents, siblings, and then more distant relatives. Stepchildren, unmarried partners, and friends inherit nothing under these rules.
Almost never. The estate passes to the state only if no legal heirs can be found at all, which is rare. In nearly every case your property goes to relatives under the intestate succession statute, just not necessarily the relatives, or in the shares, you would have chosen.
Without a will you have not nominated a guardian, so an Illinois judge decides who raises your minor children. The court tries to act in their best interest, but it is choosing without your input, and the decision can become a source of family conflict. A will is the only way to name the guardians you want.
Effectively, yes. Dying intestate means the state's default rules control your estate, an administrator is appointed instead of an executor you chose, and your specific wishes carry no weight. A simple will, and often a trust, replaces those defaults with a plan you actually designed.
Source: Illinois Probate Act of 1975, descent and distribution, 755 ILCS 5 (ilga.gov).
You can replace the state's default plan with your own in a single conversation, and the first one is free.
Related reading: how long does probate take in Illinois.