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Illinois Estate Tax Calculator: the ramp chart

2026 law · reviewed September 3, 2026

Illinois estate tax by taxable estate under 2026 law: $0 at $4,000,000, rising steeply at first, about 28.6 cents per dollar just past the line, then easing.

Educational only, not investment, tax, or legal advice. Results are hypothetical estimates that vary with each use and over time and are not guaranteed accurate or complete. Using this tool creates no client relationship with Considerate Capital, and the site that linked here is not affiliated with it. By using it you agree to the tool terms (opens in a new window).