What the rule says
Illinois intestacy law — the set of default rules that govern who inherits when someone dies without a valid will — does not distribute an estate according to anyone's wishes. It distributes it according to a fixed statutory formula. Under 755 ILCS 5/2-1, if an Illinois resident dies survived by both a spouse and descendants, the estate is divided equally: one half to the surviving spouse and the remaining half distributed among the children, or their descendants if a child predeceased the decedent.
This formula is not a suggestion. It is the law that takes effect automatically when no valid will exists. Courts apply it mechanically, without inquiring into the family's financial circumstances, the relative needs of the survivors, or what the deceased would have wanted.
What happens without a will
The equal split may sound reasonable in the abstract, but it frequently produces outcomes that do not match what a reasonable person would have chosen.
Consider a household where the surviving spouse relies on the family home for housing and on the estate for living expenses. Under intestacy, half of everything — including a fractional interest in the home — passes immediately to the children. If those children are adults from a prior relationship, the surviving spouse may face a co-ownership dispute over the marital home. If the children are minors, a guardian must manage their inherited share until they reach adulthood, adding cost and procedural complexity.
The other common mismatch occurs when children are financially independent. Illinois intestacy gives them a mandatory half-share regardless. A parent who would have chosen to leave the estate entirely to a financially dependent spouse has no mechanism to do so without a will.
There is no "intent of the deceased" inquiry in intestacy proceedings. The 50/50 formula executes automatically.
What you can do about it
A valid Illinois will gives you complete control over how your estate is distributed. You can direct any split you choose — the entire estate to your spouse, a specific dollar amount to each child, a different fraction based on relative need, or any other arrangement that reflects your actual situation.
Several practical points:
- The will must satisfy Illinois formalities. A valid Illinois will requires your signature in the presence of two disinterested witnesses (witnesses who are not beneficiaries under the will). - Non-probate assets are governed by beneficiary designations, not the will. Life insurance, retirement accounts, and payable-on-death bank accounts pass directly to named beneficiaries. Review those designations separately. - A trust is an alternative for more complex situations. A revocable living trust can distribute assets with more precision and avoids the public probate process entirely. An estate planning attorney can advise whether a trust fits your situation.
Who this affects most
The 50/50 intestacy formula most often produces unexpected outcomes for:
- Married parents with children from a prior relationship, where the surviving spouse and children have competing interests in the estate - Households where the surviving spouse is financially dependent on the full estate - Situations where the deceased intended a different distribution but never documented it
Illinois law gives you the freedom to direct your estate however you choose — to your spouse, your children, or any combination — as long as you express that choice in a valid will. Without one, the default formula applies regardless of your circumstances.