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Home→Tools→State Estate Planning Guides→Illinois

How Does Estate Planning Work in Illinois?

Your complete Illinois estate planning overview: probate costs, will execution requirements, trust rules, and what happens if you die without a plan.

Frequently Asked Questions

Probate in Illinois uses reasonable compensation for attorney fees, typically 1.9-3% of the estate value — about $29,820 all-in on a $500,000 estate. Estates under $150,000 may qualify for Small Estate Affidavit.

Simple estates in Illinois typically take 6-9 months through probate. Complex or contested estates can take 1-3 years. A revocable trust avoids probate entirely.

Illinois does not require witnesses for trust execution. Notarization is not required for validity, though many financial institutions require notarized trust documents. Illinois has no separate trust creditor-notice step — the settlor's debts stay subject to the general claims and limitations period (up to 9 months), which the trustee settles before distributing.

Illinois offers remote online notarization (RON) for estate planning documents and transfer-on-death deeds to pass real estate without probate. These tools, combined with revocable trusts and beneficiary designations, provide multiple ways to transfer assets without probate.

A healthcare power of attorney in Illinois requires 1 witness to be valid. A financial power of attorney requires 1 witness and notarization. A financial power of attorney is durable by default, so it stays in effect if you become incapacitated.

In Illinois, the executor must file an inventory of the estate's assets within 60 days of appointment. A revocable trust skips the court-supervised inventory entirely, so a trustee distributes assets without filing one.

In Illinois, divorce automatically revokes a beneficiary designation that names a former spouse on covered accounts, so the asset does not pass to the ex-spouse unless the designation is renewed after the divorce.

Estate Planning in Illinois

Estate planning in Illinois is shaped by remote online notarization and transfer-on-death deeds. The choice between a will and a revocable trust depends on which of those features changes the cost or process for your situation, not on any single rule.

Probate in Illinois runs attorney fees on a reasonable-compensation standard, typically 1.9-3% of the estate value, with room to negotiate. A simple estate typically closes in 6-9 months, and the 6-month creditor-claim window sets the floor. Estates under $150K can use the Small Estate Affidavit and avoid full probate administration. The Small Estate Affidavit is presented directly to the bank, employer, or other holder of the property — it is not filed with a court.

For a revocable trust, Illinois does not require witnesses for trust execution. Notarization isn't required for validity, though banks and title companies typically expect a notarized trust before they'll work with it. Illinois has not adopted the Uniform Trust Code; trust administration follows the state's own rules, which can affect trustee duties and beneficiary remedies.

Illinois offers transfer-on-death deeds, which move real estate to a named beneficiary at death without probate and remote online notarization for estate documents, so signing can happen over secure video. Combined with beneficiary designations on retirement accounts and payable-on-death registrations, these can move significant value outside probate without setting up a trust.

SimplyTrustSimplyTrust Editorial·Updated July 13, 2026

Sources

  • ilga.gov

Data sourced from Illinois estate law primary sources (3 pages reviewed). How we research.

Illinois Estate Planning Tools

  • Answer a specific Illinois question: How much does probate cost in Illinois? · Who inherits without a will in Illinois? · Do I need probate in Illinois? · How much does a will cost in Illinois? · How much does a trust cost in Illinois? · How do I sign a will in Illinois?

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