What Happens If You Die Without a Will in Illinois? Who Inherits, Who Decides, and What It Costs Your Family

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“Everything just goes to Mom.” That’s what the family told me, and it’s what nearly every family I meet assumes happens if you die without a will in Illinois.

Their dad had died suddenly in his early sixties. He’d always meant to make a will and never got to it. Then they learned how Illinois actually works. Mom inherited half, and the three kids inherited the other half. Because the house was in Dad’s name alone, she now co-owned her own home with her children, and selling it to move somewhere smaller meant getting all three of their signatures. If one of them had still been a minor, it would have meant asking a judge.

No one was fighting, and no one did anything wrong. The law did exactly what it was written to do, which was nothing like what this family would have wanted.

Here’s the short version. If you die without a will in Illinois, state law decides who inherits and a judge decides who’s in charge. If you leave a spouse and children, your spouse gets half and your children share the other half. Stepchildren and unmarried partners receive nothing. And if you have young kids, the court chooses their guardian. Here’s how each piece plays out.

Illinois has already written a will for you

When someone dies without a will, the legal term is “intestate,” and the Illinois Probate Act spells out exactly who inherits. In effect, the state keeps a default will on file for every resident. It’s identical for everyone. It doesn’t know your family, your values, or your circumstances, and most people have never read a word of it.

Who inherits under Illinois intestacy law

Illinois intestate succession follows a fixed order based on who survives you.

  • If you leave a spouse and children, your spouse inherits half and your children split the other half equally. If one of your children has already passed away, that child’s own children step into their parent’s share.
  • If you leave a spouse and no children or grandchildren, your spouse inherits everything.
  • If you leave children but no spouse, your children inherit everything in equal shares.
  • If you leave no spouse and no descendants, your parents, brothers, and sisters share the estate, with nieces and nephews taking a sibling’s place if that sibling has died. If only one parent is living, that parent receives a double share.
  • If none of those relatives survive you, the estate moves further out to grandparents and their descendants, then to more distant relatives. If no relatives can be found at all, it can end up with the county.

“Children” here means all of your children, including those from a prior marriage. In a blended family, that can produce results nobody saw coming, and it’s where I see intestacy cause the most hurt. I’ve written separately about estate planning for blended families in Illinois for exactly that reason.

Here’s how that looks in real life. Picture a man in his second marriage with two grown children from his first. He and his wife have no children together, and he dies without a will. His wife inherits half of what’s in his name, and his two children split the other half. Her children, the stepkids he may have helped raise, receive nothing. And whatever his wife inherits will most likely pass to her own family when she dies, not to his.

Two more details tend to surprise people. Illinois treats a partner in a civil union the same as a spouse, so they inherit as a spouse would. And half-siblings inherit the same share as full siblings.

Who gets left out

Illinois intestacy law only recognizes a spouse and blood or adopted relatives. That means it does nothing for:

  • A partner you lived with for years but never married
  • Stepchildren you raised but never legally adopted
  • Close friends, godchildren, or anyone else outside your legal family
  • Your church, a charity, or a cause you care about

It also treats every child exactly the same, no matter what’s happening in their lives. A child who relies on disability benefits could lose eligibility by inheriting outright, which is why parents plan ahead for a disabled child’s inheritance. A child who’s struggling with money or addiction receives the same lump sum as everyone else, with no one keeping an eye on it.

Who’s in charge of your estate

Without a will, there’s no executor you chose. Instead, the probate court appoints an administrator, and Illinois law sets the order of priority: your surviving spouse, then your children, then grandchildren, parents, brothers and sisters, and more distant relatives. If no family member serves, the court can appoint a public administrator.

The person at the top of that list isn’t always the right person for the job. A grieving spouse may not be ready to take on court deadlines and paperwork. Siblings may disagree about which of them should serve. An administrator also commonly has to post a bond, an added cost that a well-drafted will can usually waive. That’s why you want to choose your own executor instead of leaving it to the statute.

What happens to your minor children

For parents of young kids, this is the part that matters most. A will is where you name the guardian you’d want to raise your children if both parents are gone. Without one, a judge decides. The court will try to act in your children’s best interests, but it’s choosing from whoever steps forward, and it never got to hear from you.

The money is a separate problem. Children can’t manage an inheritance on their own, so the court typically appoints a guardian of the estate to handle it, with regular reports to the court until each child turns 18. Then, on their eighteenth birthday, each child receives their share outright, whether they’re ready for it or not.

If you’re a parent and you haven’t named a guardian yet, this is the one piece of planning I’d urge you not to put off. It’s a conversation, not a mountain of paperwork. Reach out or call me at 815-710-0200, and we’ll get it done.

How this plays out in Kane and DeKalb counties

When someone dies without a will and owns assets in their own name, the estate is usually opened in the circuit court of the county where they lived. For Kane County families, that means the courthouse in Geneva. DeKalb County estates go through the DeKalb County circuit court.

From there, it follows the same path as any probate. The administrator is appointed, a notice to creditors runs in a local newspaper, a claims window stays open for months, assets are gathered and valued, debts are paid, and only then is what’s left distributed to the heirs. All of it becomes part of the public court file. I walk through the probate process in Kane County step by step if you’d like to see what that looks like up close.

If the estate is made up only of personal property below a set amount and there’s no real estate involved, Illinois allows a small estate affidavit that skips most of the court process. Once a house is part of the picture, that shortcut usually isn’t available.

What it actually costs your family

Dying without a will rarely costs a family through one big bill. It costs them in a hundred smaller ways. There’s time, because probate takes months at a minimum and often longer. There are fees for attorneys, court filings, bonds, and publication, all paid out of what you left behind. And there’s the strain of making hard decisions while grieving, sometimes with siblings who don’t agree and a surviving spouse who suddenly needs other people’s signatures to manage her own life. If you’ve ever helped a parent through what a surviving spouse faces after a death, you know how much is already on their plate.

The fix is smaller than you think

Here’s the encouraging part. Every one of these problems is preventable, and fixing them is usually simpler than people expect. A will lets you decide who inherits, in what shares, who’s in charge, and who raises your children. It’s worth knowing what a will can and cannot do, though, because a will on its own still goes through probate. For many families, a revocable living trust is the better tool, and I’ve written about how to decide whether you need a trust or a will. If you go that route, remember that a trust only works once it’s funded, so here’s how to fund a living trust in Illinois.

Either way, the work starts with a conversation about your family, what you own, and what you want to happen. Most of my estate planning clients across Kane County, DeKalb County, and the rest of Illinois meet with me over video, so it fits around real life instead of the other way around.

Frequently asked questions

Does my spouse automatically get everything if I die without a will in Illinois?

Only if you have no children or other descendants. If you leave a spouse and children, your spouse receives half of your estate and your children share the other half.

Do stepchildren inherit under Illinois law if there’s no will?

No. Stepchildren don’t inherit under Illinois intestacy law unless you legally adopted them. If you want to provide for a stepchild, you need a will or trust that says so.

Who becomes guardian of my children if I die without a will?

A judge decides. The court considers your children’s best interests, but because you never nominated anyone, it chooses from whoever comes forward.

Does a small estate still go through probate in Illinois?

Not always. If the estate is made up only of personal property below a set amount and there’s no real estate, your family may be able to use a small estate affidavit instead of opening a full probate case.

Can my family avoid probate if I don’t have a will?

Some assets can. Accounts with a named beneficiary, payable-on-death accounts, and property held in joint tenancy with right of survivorship generally pass outside of probate. Anything titled in your name alone, with no beneficiary named, usually doesn’t.

Make these decisions yourself

Every October, National Estate Planning Awareness Week rolls around, and plenty of people promise themselves they’ll finally get to it. If you don’t have a will, or you have one that hasn’t been touched in years, let’s make this the year it actually happens. We’ll name the people you trust, decide who inherits and how, and, if you have kids, choose who would raise them. Schedule a confidential strategy session or call me at 815-710-0200, and we’ll make sure the decisions stay yours.