It’s one of the most common questions in estate planning, and it’s usually asked with a number in mind: “Do I have enough for a trust to be worth it?”
The honest answer is that net worth is the wrong measurement. Plenty of families with $3 million in assets are adequately served without a trust, and plenty of households with $400,000 have a genuine, expensive problem that only a trust solves. What determines whether you need a trust isn’t the size of your balance sheet — it’s the composition of it, and what happens to it under Illinois law if you do nothing.
That said, there are identifiable thresholds where the analysis changes. Here they are.
Threshold 1: You Own Illinois Real Estate
This is the threshold most people cross without realizing it.
Under Illinois law, an estate can qualify for simplified administration by small estate affidavit only if the probate assets are worth $150,000 or less and include no real estate. Own a home titled in your individual name — at any value — and your estate is headed to probate. Full court administration: filings, notice, claims periods, and a process that routinely runs many months to over a year.
Probate is also public. The inventory of what you owned, what it was worth, and who received it becomes a court record. And administration isn’t free — probate and trust administration costs typically run in the range of 2% to 5% of the assets involved, with formal probate generally at the more expensive end.
A funded revocable living trust takes the real estate out of that equation entirely. The property passes to your beneficiaries under the trust’s terms — privately, without court involvement, on your successor trustee’s timeline rather than the court’s.
If you own a home in Illinois, the question is no longer really “do I need a trust?” It’s “is avoiding probate worth more than the incremental cost of a trust-based plan over a will-based one?” For most homeowners, arithmetic answers that question quickly. For homeowners with property in more than one state — an Illinois residence and a Missouri rental, a Florida condo — the answer is emphatic, because each state’s real estate otherwise means a separate ancillary probate in that state.
Threshold 2: Your Estate Approaches $4 Million — Including What You’ve Given Away
Federal estate tax gets the headlines, and after the 2025 federal legislation made the historically high exemption permanent, most families will never pay it.
Illinois is a different story. The Illinois estate tax exemption is $4 million — not indexed for inflation, and not portable between spouses. The exemption a spouse doesn’t use at death is simply lost unless planning captures it. For a married couple, the difference between a plan that preserves both exemptions and one that doesn’t can be hundreds of thousands of dollars in avoidable Illinois estate tax.
Two features make this threshold easier to cross than people expect:
- Prior taxable gifts count. Illinois includes lifetime taxable gifts (those reportable on a federal Form 709) when measuring whether your estate exceeds $4 million. A $3.5 million estate with $700,000 in prior reportable gifts has an Illinois estate tax problem.
- $4 million arrives faster than it used to. A paid-off home, retirement accounts compounded over a career, life insurance proceeds, and a family business or farm — many Metro East families are closer to this line than they realize.
At this level, trust planning stops being about probate avoidance and becomes tax architecture: credit shelter trusts to capture the first spouse’s exemption, QTIP marital trusts to defer tax while controlling ultimate disposition, and lifetime strategies coordinated with the federal rules. If you want a quick read on your own exposure, our Illinois estate tax calculator estimates it using the official state method.
Threshold 3: Your Situation Is More Complicated Than Your Balance Sheet
Some of the strongest cases for trust-based planning have little to do with asset value:
- Blended families. A will that leaves everything to a surviving spouse offers no assurance that children from a prior marriage ultimately inherit. Trust structures can provide for a spouse and guarantee the remainder reaches your children.
- A beneficiary with special needs. An outright inheritance can disqualify a loved one from means-tested benefits. A properly drafted special needs trust preserves both the inheritance and eligibility.
- Young or financially inexperienced beneficiaries. A trust controls the timing and conditions of distributions; a will hands over a check at eighteen.
- Business or farm ownership. Continuity of management, succession, and coordination with buy-sell arrangements are trust-and-entity questions, not will questions.
- Incapacity. A funded revocable trust lets your successor trustee manage your affairs seamlessly if you become incapacitated — often avoiding a court-supervised guardianship entirely. This benefit has nothing to do with net worth and everything to do with age and planning ahead.
So — Is There a Number?
If you need one, here is the honest framework:
- Under ~$150,000, no real estate, simple family structure: a well-drafted will with powers of attorney and beneficiary designations may genuinely be enough.
- You own Illinois real estate, at any net worth: a revocable living trust deserves serious consideration, because probate is otherwise nearly assured.
- Approaching or above $4 million (counting prior gifts and life insurance): trust planning is no longer optional if preserving wealth matters to you — the Illinois exemption structure penalizes the unplanned estate at the first spouse’s death.
- Any net worth, with a blended family, special needs beneficiary, business, or multi-state property: the trust is doing work a will structurally cannot.
Notice what’s absent from that framework: a minimum wealth requirement. The trust is not a luxury product that unlocks at a certain net worth. It is an instrument that solves specific, identifiable problems — and either you have those problems or you don’t.
The Real Question
The cost of a trust-based plan is fixed and known upfront. The cost of not having one — probate administration, ancillary proceedings in other states, a forfeited $4 million exemption, a guardianship, a disrupted inheritance — is variable, deferred, and paid by your family at the worst possible time.
A.H.Steinmetz, Ltd. builds trust-based estate plans for families throughout Monroe, St. Clair, and Madison Counties and the greater St. Louis region — from foundational revocable living trust plans to advanced Illinois estate tax strategies. A free 15-minute consultation is enough to tell you which thresholds you’ve crossed and what, specifically, a plan needs to solve for you.