Married couples in Oak Brook often assume that if one of them dies, the survivor simply keeps everything. After years of shared accounts and shared decisions, that feels like common sense. Illinois law follows a different set of rules.
The state has its own formula for dividing property when someone dies without a valid will, and it does not always match what a couple pictured. Even households with documents in place are frequently surprised by how much of their property passes outside those documents.
What Illinois Law Does When There Is No Will
When an Illinois resident dies without a will, the Probate Act of 1975 controls distribution. If there is a surviving spouse and no children or other descendants, the spouse receives the entire probate estate. If there is a surviving spouse and at least one descendant, the estate is split in half: one half to the spouse, and one half divided among the descendants per stirpes, meaning a deceased child’s share moves down to that child’s own children.
So, does a spouse inherit everything in Illinois? Not automatically. A surviving husband or wife raising two teenagers could end up owning half of the family’s probate assets while the children own the other half. Minors cannot legally manage property either, so a court may need to appoint someone to oversee a child’s share until age 18. That supervision adds cost and delay to the probate process, which is already a public court proceeding.
A Will Does Not Control Every Asset You Own
Even a carefully drafted will governs only the assets that actually pass through probate. Several common categories transfer by contract or by title instead, and each follows its own rules:
- Retirement accounts, life insurance policies, and payable-on-death accounts pass to whoever is listed on the beneficiary designation form
- Property held in joint tenancy with right of survivorship passes to the surviving co-owner
- Assets properly titled in a funded living trust pass under the terms of that trust
- Illinois real estate with a transfer on death instrument passes to the named recipient
These designations generally control no matter what the will says. An old 401(k) still naming a parent, a sibling, or a former spouse will pay out that way even when the will leaves everything to the current spouse. It is a common gap, and also one of the easier ones to correct.
Illinois Also Protects a Surviving Spouse From Being Cut Out
The surprise runs in the other direction as well. A married person in Illinois cannot fully disinherit a spouse through a will alone. A surviving spouse may file a renunciation with the probate court, generally within seven months after the will is admitted, and take one-third of the estate if the decedent left descendants, or one-half if there were none.
That rule carries real weight in second marriages. Someone who intends to direct most of an estate toward children from an earlier relationship may find the plan reshaped after death, sometimes through litigation between a stepparent and stepchildren. Planning for a blended family usually calls for tools beyond a simple will.
The 5-Question Estate Check
Set aside twenty minutes with your spouse and work through these together.
- Do you have a current, signed will or a funded trust? Documents signed before a move, a remarriage, or the arrival of a child may no longer describe your household. A trust that was drafted but never funded leaves assets exposed to probate.
- Who is named on every beneficiary designation? Pull the actual statements rather than relying on memory, and check contingent beneficiaries as well as primary ones.
- How is your home titled? Joint tenancy and tenancy in common produce very different results for a surviving spouse, and the deed language decides the outcome.
- If you have children, what happens to their share? A half interest landing on an 18-year-old, or on a minor through a court-supervised arrangement, is rarely what parents intended.
- Who can act if you are alive but unable to decide? Powers of attorney for property and health care govern that period, and a spouse does not automatically hold the authority in every setting.
Being unable to answer one or two of these from memory is common, and it is a reasonable prompt to review the plan.
Why a Review Is Easier Than a Correction
A coordinated plan aligns the will, any trust, account titling, and beneficiary forms so they point in the same direction. Families who take that step often shorten administration and give the surviving spouse clearer authority when quick decisions matter.
Key Takeaways
- Illinois splits an intestate estate: With a surviving spouse and descendants, half goes to the spouse and half to the descendants per stirpes
- Beneficiary designations usually override a will: Retirement accounts and life insurance pay whoever is named on the form
- Titling decides more than people expect: Joint tenancy, trust ownership, and transfer on death instruments move property outside probate
- A spouse cannot be fully disinherited by will: Illinois permits renunciation for one-third or one-half of the estate, depending on whether descendants survive
- Blended families face added complexity: Competing obligations to a spouse and to children from a prior relationship call for deliberate planning
- Five questions surface most gaps: Documents, beneficiaries, titling, children’s shares, and incapacity authority
Get Clear Answers About Your Own Plan
Family, Wealth & Legacy Legal Solutions works with Illinois families who want their plans to reflect the life they built rather than a default statutory formula. If the questions above raised something you could not answer, or if your documents predate a significant change in your family or finances, a review is a practical next step. Attorney Michael Biederstadt can walk through how your assets are titled, how your beneficiaries are named, and what your documents would produce today. Book a free initial call to learn more.
References: Illinois Compiled Statutes, Probate Act of 1975, 755 ILCS 5/2-1 and 755 ILCS 5/2-8, Article II, Descent and Distribution; MSN Money (Aug. 22, 2025) “Ensure Your Ex Doesn’t Inherit: Avoid Common Probate Mistakes”