Dear Illinois Resident,

Illinois Estate
Tax Calculator

Illinois doesn't care what Washington says. Cross $4,000,000 and the state comes knocking with its own tax bill — a nastier one than Uncle Sam's. Slide the numbers below and see, in about ten seconds, exactly what you're up against.

Your net worth at death:

$6,000,000
$0 $25M $50M
Illinois estate tax owed $0
$75,000
$0 $1M $2M
$0
$0 $5M $10M

Illinois taxable estate = net worth − funeral & administration costs − charitable deduction. This mirrors the federal taxable estate, which Illinois uses as its own starting point.

Below exemption
Estimated Illinois estate tax due
$0
effective rate on taxable estate: 0.00%
$0 $10,000,000+
$4.0M exempt
Taxable estate$0
Less: Illinois exemption$4,000,000
Adjusted taxable estate (est. − $60,000)$0
Tax per IL credit-table schedule$0
Less: tax on $4,000,000 baseline−$280,400
Illinois estate tax$0

Cross The Line, And They Don't Ease You In

Look, I'll be straight with you. The instant your net worth ticks past $4,000,000, Illinois starts taxing every extra dollar at 10.4% — not some gentle little starter rate. Zero warm-up. A $5,000,000 estate? That's $111,200, gone, just like that. Now here's the good news: we can fix this, with Credit Shelter Trusts and Irrevocable Trusts.

Want To Build A Dynasty? There's a tool for that: the South Dakota Dynasty Trust. It's how real money stays in a family for generations instead of getting chopped up by the tax man.
Losing Sleep Over Lawsuits? A Cook Islands Trust puts your assets legally out of reach — offshore, in the South Pacific, right where a lawsuit can't touch them.
Grab Your Complimentary Phone Consultation

What? 16% Top Rate?

Illinois doesn't slap a flat rate on the amount over $4,000,000 — that'd almost be fair. Instead they dust off an old federal formula from before 2001 (the "state death tax credit" table) and run your whole estate through it. Then they subtract what that formula says a $4,000,000 estate owes. Net result? The dollars above $4,000,000 get taxed at whatever bracket YOUR estate size has already earned — starting at 10.4% and marching up to 16%. No baby steps. No warm-up lap.

Federal Estate Taxes are a separate issue.

Here's some good news, for once: the federal exemption is a lot higher than Illinois's, so most families who owe Illinois estate tax owe Uncle Sam nothing at all. But federal rules change whenever Congress feels like it — so don't take my word for the current number. This tool's only job is showing you the Illinois side of the story.

This is an estimate, not advice

Scott Tucker Solutions, Inc. is not a law firm or CPA firm — we're a tax strategies practice that works alongside licensed attorneys and CPAs to build these plans. Nothing on this page is tax or legal advice. This calculator illustrates how the Illinois formula works and is not a substitute for advice from an estate planning attorney or CPA. It does not account for prior taxable gifts, QTIP elections, closely-held business valuation discounts, or other estate-specific complexities. Illinois exemption amounts and rate tables are set by statute and can change — verify current figures with the Illinois Attorney General's office or a licensed professional before relying on any number here.

Don't Gamble With $4,000,000

You've seen the numbers. Now here's the question: are you going to do something about it, or close this tab and hope Springfield forgets about you? The right trust, set up now, can shrink a six-figure tax bill down to almost nothing. Let's talk before you need to.

Grab Your Complimentary Phone Consultation

Disclaimer. Scott Tucker Solutions, Inc. is not a law firm and does not provide legal advice; it is not an accounting firm and does not provide CPA services. Our tax strategies practice works alongside licensed attorneys and CPAs to design and implement the strategies discussed on this page, but nothing here is tax advice or legal advice, and using this calculator does not create an attorney-client, CPA-client, or advisory relationship. This tool provides a general estimate of Illinois estate tax based on the statutory credit-table formula and the current $4,000,000 exemption. It is provided for educational purposes only. Results do not account for prior taxable gifts, QTIP or other marital elections, business valuation discounts, trusts, multi-state property, or changes in law. Illinois and federal exemption amounts, rates, and rules are set by statute and are subject to change without notice. Every estate is different — consult a licensed Illinois estate planning attorney or CPA before making any financial or legal decision based on these figures. We make no warranty, express or implied, as to the accuracy or completeness of any estimate produced by this tool, and accept no liability for actions taken in reliance on it.