Tax year 2026 · Single filer · $100kRank #39Has state income tax

Illinois Effective Tax Rate 2026

Employee effective tax rate in Illinois on a fixed $100,000 single-filer salary — about 25.8% ($74,230 take-home). Federal, state, and FICA only; sales and property tax excluded.

By Sammy S. · Founder · AuthorUpdated for 2026

25.8%

Effective rate @ $100k

#39

National rank

$74,230

Take-home

$25,770

Est. tax

Calculate your rate Full ranking

Illinois effective tax rate snapshot

Illinois ranks #39 of 50 for effective employee tax rate on a fixed $100,000 single-filer salary in 2026. Modeled effective levy is about 25.8% after federal income tax, state income tax, and employee payroll (FICA). Take-home ≈ $74,230. Sales and property taxes are excluded.

Effective @ $100k

25.8%

Rank #39 of 50

Take-home

$74,230

$25,770 total tax

At $50k

20.2%

$39,880 net

At $250k

31.7%

Has state income tax

Key takeaways for Illinois

Illinois’s effective employee levy at $100,000 is about 25.8% (rank #39).
Modeled take-home ≈ $74,230 after about $25,770 in federal, state, and payroll — paycheck-only.
Across bands: 20.2% at $50k → 31.7% at $250k.
Illinois has state income tax; federal tax and FICA still apply.
For context: Texas ≈ 20.8%; California ≈ 27.2% at $100k.

Effective rate by income in Illinois

Same single-filer engine at four gross salaries. Rankings use the $100,000 column.

Gross	Effective rate	Take-home	Est. tax
$50k	20.2%	$39,880	$10,120
$100krank key	25.8%	$74,230	$25,770
$150k	29.1%	$106,366	$43,634
$250k	31.7%	$170,807	$79,193

How Illinois compares on effective rate

Gap vs the lowest and highest rates at $100k, plus nearby peers by effective rate.

vs #1 (Alaska)

5.0 pp higher than #1

vs last (Hawaii)

2.6 pp lower than last place

vs Texas

5.0 pp higher than Texas

Take-home $4,950 less

vs California

1.4 pp lower than California

Take-home $1,436 more

#38 · 25.7%

#40 · 25.8%

#37 · 25.7%

#41 · 25.9%

#36 · 25.6%

#35 · 25.6%

Effective rate compares involving Illinois

Illinois vs Texas

How we calculate the effective tax rate in Illinois

We run fixed gross salaries through our US paycheck engine for a single filer in tax year 2026, with Illinois selected. Modeled withholdings include federal income tax, state income tax (when applicable), and employee payroll (FICA plus any modeled state disability / paid family leave premiums). Effective rate = total modeled tax ÷ gross.

Results are educational estimates for comparing jurisdictions — not a substitute for your W-2 stub or a filed return. Local city taxes, benefits deductions, and non-paycheck levies (sales, property) are excluded.

Effective tax rate FAQ — Illinois

In this 2026 single-filer model, Illinois’s effective employee levy at $100,000 is about 25.8% — roughly $25,770 combined federal income tax, state income tax, and employee payroll on $100,000 gross, leaving about $74,230 take-home. Rank #39 of 50 (lowest rate = #1).

Illinois ranks #39 of 50 states at the $100,000 band. #1 (Alaska) is about 20.8%; last place (Hawaii) is about 28.3%. Gap vs #1 is about 5.0 percentage points.

About $74,230 after roughly $25,770 in modeled levies (25.8% effective) on a $100,000 single-filer salary.

Yes — Illinois has state income tax (flat structure in our state table). Combined with federal income tax and employee payroll, the modeled effective rate at $100k is about 25.8%.

Four fixed bands: $50k, $100k, $150k, $250k. Rankings use the $100,000 band. At $50k Illinois is about 20.2%; at $250k about 31.7%.

No. Effective rate is total modeled tax ÷ gross. Marginal rate is the tax on the next dollar of income. This page publishes effective employee levies (income tax + payroll), not top marginal brackets alone.

No — paycheck-only. Sales tax, property tax, and most benefit deductions are excluded. For broader burden and COL context, see salary comparison by state and household tax by state.

This page models a single filer with standard defaults. Married filing jointly, head of household, dependents, and pre-tax deductions change results. Use the US paycheck calculator with Illinois selected to personalize.

Illinois’s effective rate is about 5.0 percentage points higher than Texas (25.8% vs 20.8%), so take-home is about $4,950 lower.

Illinois’s effective rate is about 1.4 percentage points lower than California (25.8% vs 27.2%), so take-home is about $1,436 higher.

Rankings here are effective employee levies after federal, state, and payroll — not income-tax status alone. Progressive brackets, flat rates, and payroll premiums all move the rate at $100k.

Use the band ladder on this page ($50k–$250k), open the Illinois salary comparison profile for more incomes, or run the US paycheck calculator with Illinois selected for your filing status and deductions.

Tax Freedom Day turns a similar paycheck levy rate into a calendar date. This profile focuses on percentage and dollar take-home at fixed incomes; see Tax Freedom Day for the calendar framing.