Illinois Probate Cost 2026: Fees, Filing Fee, and the Small-Estate Route

Updated August 19, 2026. Quick answer: Illinois publishes no percentage schedule for probate compensation — the personal representative and the attorney are each paid what the court finds reasonable (755 ILCS 5/27-1), so the bill tracks hours worked rather than the size of the estate. The second number is the small-estate threshold, at or under which an estate skips most of probate: $150,000 of personal property, by small-estate affidavit. Whether any of that reaches a solely owned house is answered below — it is where most published guidance goes wrong.

What probate costs in Illinois

Why Illinois has no single answer

Illinois does not publish a percentage schedule that produces one number, so any source quoting you a firm figure is estimating. What the statute actually fixes is the standard: Reasonable compensation for representatives (755 ILCS 5/27-1) and attorneys (755 ILCS 5/27-2); no percentage schedule. That makes three things decide the bill — how many billable hours the administration takes, whether any beneficiary contests, and whether the estate qualifies for the small-estate route below and skips most of it. Get the fee basis in writing before engaging anyone.

For states that DO publish a schedule, and to compare, use the probate cost calculator.

What is the small estate limit in Illinois?

$150,000 of personal property, excluding motor vehicles registered with the IL Secretary of State (which transfer regardless of value) — small estate affidavit, 755 ILCS 5/25-1, as amended by P.A. 104-0346, effective Aug 15, 2025 for deaths on/after that date (was $100,000).

The small-estate route here does NOT clear real estate on its own. If the person who died owned a house in their sole name, that transfer needs a separate procedure or full probate, whatever the dollar limit says. This is the single most common mistake made about small-estate affidavits, and most cost guides omit it entirely.

Full thresholds for every state: small-estate limits by state.

If the estate is still being planned rather than settled, the usual way to keep a house out of probate entirely is a living trust, which carries its own upfront cost: whether a living trust is worth it in Illinois.

Does a house have to go through probate in Illinois?

Usually yes, if the house was solely owned. Because Illinois’s small-estate route does not clear a solely owned house, an estate that looks small on paper can still face full administration — and the fee is usually calculated on the gross value of that house, not the equity in it. That is the single most common and most costly surprise in this area, and it is fixable in advance rather than after. A fiduciary advisor can price the exposure alongside the rest of the estate picture. talk to someone about the whole estate picture. You can also run the numbers yourself first with the probate cost calculator — no email required.

How Illinois compares to the other 50

Illinois’s small-estate threshold of $150,000 ranks 4 of 49 jurisdictions with a stated figure, and sits well above the national median of $75,000. The range runs from $15,000 at the bottom to $400,000 at the top, so where an estate falls relative to the line matters far more than any national “average probate cost” figure. On fee model, Illinois is one of 30 of 51 jurisdictions using the reasonable-fee approach.

Death taxes in Illinois, separately

Illinois levies an estate tax, one of 13 jurisdictions that do. That is a different question from probate cost and is decided by different statutes, but families routinely conflate the two.

Estate tax: yes – $4,000,000 exclusion (not indexed, not a true exemption: estates over $4M are taxed using the pre-2001 federal state-death-tax-credit table on the full taxable estate); effective marginal rates commonly stated as 0.8%-16%; administered by the IL Attorney General

What this does not include

The figures above are the probate cost — the court and compensation side of settling an estate. They are separate from any state estate tax or inheritance tax, which are taxes on the transfer itself and are owed whether or not the estate goes through probate. Appraisal, bond premium, publication, and real-estate commissions if property is sold are additional and are not set by the fee statute.

Before you hire anyone

• Ask which statute the fee is charged under, and get the citation. In Illinois the governing provisions are below.
• Ask whether the quoted fee is calculated on gross value or net of debts. Gross-value states charge on the full house value even if a mortgage covers most of it.
• Ask whether the personal representative is also claiming compensation, and on what basis.
• Ask in writing whether the estate qualifies for the small-estate route, and if a solely owned house is involved, whether that route reaches it.

Primary sources

• 755 ILCS 5/27-1
• 755 ILCS 5/27-2
• 755 ILCS 5/25-1 (P.A. 104-0346)

Illinois in the rest of the picture

Probate cost is one of four things Illinois decides for a retiree and their heirs. The other three — income tax on withdrawals, estate tax, and inheritance tax — are priced separately:

• Every tax Illinois charges a retiree: Illinois retirement taxes
• What a move out is worth: leaving Illinois
• Corridor comparison: Illinois To Arizona
• Corridor comparison: Illinois To Florida
• Corridor comparison: Illinois To Georgia
• Corridor comparison: Illinois To Nevada

Compare and calculate

Probate cost by state compares all 51 jurisdictions side by side. The probate cost calculator prices a specific estate. If a move is on the table, retirement tax relocation prices probate alongside the three other taxes that change with residency.

Cite or share this guide: “Illinois Probate Cost (2026),” statute-cited; clearmoneyguide.com/illinois-probate-cost/. Free to cite with attribution.