What Actually Changed in Illinois Estate Law — and What Did Not
There is a great deal of misinformation circulating about Illinois estate planning law for 2026. Most notably: several sources claim the Illinois estate tax exemption doubled to $4 million in 2026. This is incorrect. The Illinois estate tax exemption has been $4 million per person since 2013 — it did not change in 2026.
What did change are three meaningful updates that Cook County families should understand: the Small Estate Affidavit threshold was raised to $150,000 (effective August 2025), Power of Attorney acceptance rules were significantly strengthened (effective January 2025), and the federal estate tax exemption was permanently raised to $15 million per person.
A Common Misconception to Be Aware Of
You may have read that Illinois raised its estate tax exemption to $4 million in 2026. In fact, the $4M threshold has been in place since 2013 and is unchanged. Several bills to raise or eliminate the Illinois exemption have been proposed (HB2601, HB1731, HB2368) but none have been signed into law as of 2026. This article reflects the law as it actually stands.
This guide covers each actual change, explains what remained the same, and provides a prioritized action list for Cook County families. We have also included an interactive Illinois estate tax calculator so you can assess your exposure under the current $4M threshold.
Small Estate Affidavit: New $150,000 Threshold (Effective August 15, 2025)
This is one of the most practically significant changes for Illinois families in recent years. Illinois Senate Bill SB0083, enacted August 15, 2025, amended the Probate Act of 1975 to raise the Small Estate Affidavit (SEA) limit from $100,000 to $150,000 for personal property.
The Small Estate Affidavit allows a family member to transfer a decedent's assets — bank accounts, investment accounts, personal property — without opening a formal probate case in county court. The affiant signs under penalty of perjury before a notary and presents the document to financial institutions or the Secretary of State. It is faster, less expensive, and far less stressful than probate.
Before August 15, 2025
$100,000
Small Estate Affidavit limit (personal property)
Vehicles counted toward the limit — a single car could push an estate over the threshold
As of August 15, 2025
$150,000
Small Estate Affidavit limit (personal property)
Vehicles excluded from the $150,000 calculation and transferred separately regardless of value
Vehicles Now Excluded From the Limit
This is a significant change. Previously, vehicle values counted toward the $100,000 cap. With today's vehicle prices — a single late-model car may be worth $30,000–$60,000 — this regularly pushed estates over the threshold and forced families to open a formal probate case just to transfer a car.
Under the new law, vehicles are handled directly with the Illinois Secretary of State and do not count toward the $150,000 personal property limit. This is particularly beneficial for families where the decedent held vehicles in their individual name rather than in a trust.
Practical Example
A Cook County resident passes away with $140,000 in bank and investment accounts, a $45,000 car, and no real estate in their individual name. Under the old law, the total ($185,000) exceeded the $100,000 cap and required formal probate. Under the new law, the vehicle is handled separately and the $140,000 in other assets falls under the $150,000 SEA limit — no probate required.
What the Small Estate Affidavit Still Cannot Do
The SEA expansion is meaningful, but it has firm limitations that families must understand:
- Real estate still requires probate: If the decedent owned any Illinois real estate in their individual name — regardless of value — a formal probate administration is required. A $150,000 estate with a condo still must go through probate.
- Does not apply to deaths before August 15, 2025: The new $150,000 limit and vehicle exclusion only apply to decedents who died on or after August 15, 2025.
- Affidavit must be used carefully: The affiant signs under penalty of perjury. Errors in listing debts, heirs, or asset values can create legal liability. An attorney should review the document before use.
- Family disagreements require probate: If heirs dispute asset distribution, the affidavit process breaks down and formal probate may be required anyway.
Power of Attorney Law Update: Public Act 103-0994 (Effective January 1, 2025)
Governor Pritzker signed Illinois Public Act 103-0994 on August 9, 2024, amending the Illinois Power of Attorney Act with an effective date of January 1, 2025. The most impactful change: it is now unlawful for a third party — a bank, financial institution, or other organization — to unreasonably refuse to honor a properly executed Illinois statutory short-form power of attorney for property.
Before this law, financial institutions frequently rejected valid powers of attorney for vague or unstated reasons, leaving agents with few options and families scrambling. The amended Act changes the landscape by codifying exactly what constitutes an unreasonable refusal.
The Five Unreasonable Grounds for Refusing a POA
The law specifies that the following are unreasonable grounds to refuse a properly executed POA:
The POA was not prepared on the institution's own form
The POA was executed more than a certain number of years before presentment (age alone is not a valid reason)
The institution requires its own certification form to be completed instead of accepting the agent's certification
The institution has concerns about liability for honoring the POA (absent specific red flags)
The institution is uncertain whether the principal is still alive or competent (without specific contrary evidence)
Important Nuance
The law also codifies 14 reasonable grounds for refusal — meaning institutions retain legitimate defenses. The amendment is not a blanket mandate to accept every document; it targets the common, bad-faith rejections that previously left agents powerless. Your existing POA documents remain valid. The change addresses how third parties must respond to them.
For more context on why powers of attorney matter and what they should include, see our guide: Do You Really Need a Power of Attorney in Illinois?
Federal Estate Tax: The $15M Exemption Is Now Permanent
For years, federal estate tax planning was dominated by uncertainty: the Tax Cuts and Jobs Act of 2017 temporarily doubled the federal estate and gift tax exemption, but those provisions were scheduled to sunset on January 1, 2026 — reverting the exemption to roughly $7 million per person.
That sunset did not happen. The One Big Beautiful Bill Act, signed on July 4, 2025, permanently raised the federal estate and gift tax exemption to $15 million per person starting January 1, 2026, indexed for inflation. The $15 million figure supersedes the prior TCJA amount and is now a permanent baseline rather than a temporary one.
This matters particularly for families who undertook significant gifting in 2024–2025 specifically to take advantage of the higher TCJA exemption before an anticipated rollback. Those strategies may warrant a review — not because they were wrong, but because the urgency that drove them has changed.
The Illinois Exemption Remains at $4M — Federal Changes Do Not Help Here
The federal and Illinois estate taxes are entirely separate systems. The permanent federal $15M exemption provides zero protection against Illinois estate tax. Illinois residents must plan for both — and the Illinois $4M threshold remains a real exposure for many Cook County families.
Illinois imposes its own estate tax on estates exceeding $4 million — a threshold it has maintained since 2013 with no inflation adjustments. Unlike the federal tax, Illinois does not offer portability between spouses. The top Illinois rate is 16%.
For a Cook County homeowner with $1.2M in home equity, $1.8M in retirement accounts, $600K in life insurance, and $500K in other assets, the total is $4.1M — above the threshold and exposed to Illinois estate tax despite being well under the federal exemption. This is not a hypothetical. It describes a large number of ordinary Cook County families.
Interactive Illinois Estate Tax Calculator
Enter your estimated gross estate value to see your Illinois estate tax exposure under the current $4 million exemption. Include home equity, retirement accounts, life insurance death benefits, and investments.
This is an educational estimate only. Actual tax calculations require professional analysis.
All Four Changes Side by Side
Select each change below to see the old rule, the new rule, and what action you should take.
Small Estate Affidavit
Old Rule
$100,000 small estate affidavit threshold; vehicles counted toward the limit
New Rule
$150,000 threshold (effective August 15, 2025); vehicles excluded from the $150,000 calculation and may be transferred separately regardless of value
Impact on Your Estate
More Cook County families can settle estates without opening formal probate — saving months of court proceedings and thousands in legal fees.
Recommended Action
If a loved one recently passed with personal property under $150,000 (excluding real estate), consult an attorney about using a Small Estate Affidavit instead of probate.
6 Action Steps Cook County Families Should Take Now
The law has changed in meaningful ways — and in one critical way it has not. Here is a prioritized list of what Cook County families should do in 2026.
Understand Your Illinois Exposure — the $4M Exemption Has NOT Changed
Many families have been told the Illinois estate tax exemption "doubled." It did not. The $4M limit has been in place since 2013. If your estate — including home equity, retirement accounts, life insurance death benefits, and investments — exceeds $4M, you still have an Illinois estate tax problem that needs active planning.
Review Trust Documents for Tax Trigger Provisions
If you have a revocable living trust with a bypass trust provision, confirm what threshold triggers the split. If your plan was drafted around the old $2M federal exemption or in anticipation of a federal sunset, those provisions may no longer be optimally structured. The federal exemption is now $15M — but your Illinois bypass trust threshold should still be set appropriately.
Ensure Your Power of Attorney Uses the Current Statutory Form
Public Act 103-0994 (effective January 1, 2025) strengthened third-party acceptance obligations. To maximize your agent's ability to use the POA without pushback from institutions, use the current Illinois statutory short-form. Your existing POA remains valid, but older documents may benefit from a review.
Check Whether a Small Estate Affidavit Could Simplify Estate Administration
The new $150,000 limit (up from $100,000) and the exclusion of vehicles means more estates qualify to skip formal probate. If a loved one has passed with personal property under $150,000 and no individually held real estate, a Small Estate Affidavit may allow faster, less expensive asset transfer.
Revisit Any Urgent Federal Gifting Strategies You May Have Made
Some families took aggressive gifting action in 2024–2025 to lock in the higher federal exemption before the anticipated sunset. Now that the $15M exemption is permanent, the urgency has passed — but it is worth reviewing whether the gifts and structures put in place still make sense for your overall plan.
Schedule a Formal Estate Plan Review
The combination of federal permanence, an unchanged Illinois exemption, and new small estate and POA rules makes 2026 an ideal time for a full review. Confirm your beneficiary designations, update any digital asset provisions, and ensure your plan reflects both the new federal landscape and Illinois's ongoing $4M threshold.
Is Your Estate Plan Accurate for 2026?
The Illinois estate tax threshold has not changed — but misinformation is widespread. Whether you need to plan around the $4M Illinois exemption, take advantage of the new SEA rules, or review your POA after the 2025 statutory update, our Cook County attorneys can review your existing documents and identify what actually needs to change.
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