Flat 4.95% Rank #38 of 51 2026 tax year

State income tax · 2026 tax year

How much does $100K take home in Illinois?

Illinois applies a flat 4.95%. See where every withheld dollar goes, the full bracket schedule, and your own take-home.

Calculate my Illinois take-home → See state rankings
$100,000 single filer in Illinois
IRS · SSA · Tax Foundation · 2026
$74,367

A single filer earning $100,000 in Illinois keeps $74,367 after federal, FICA, and state tax (25.6% effective; state tax $4,810). Structure: Flat 4.95%. Rank #38 of 51 by total burden (1 = lowest).

  • Burden rank #38 of 51 at $100K single
  • State tax on $100K: $4,810
  • 2026 tax year · IRS + state DOR schedules

Take-home paystub plate

Stub PS-IL-26 · Illinois Flat 4.95% · rank #38/51

Illinois · $4,810 state tax on $100K · NaN% all-in effective · rank #38/51

  • BURDEN-HIGH #38/51
  • STRUCT-FLAT Flat 4.95%
  • TOP-LOW 4.95%
  • GAP-FLAT +0.1pp
  • FICA-PEAK $7,650
  • BOOK-FLAT 1 band
  • PHOTO-NEAR Alabama
  • TH-100K $NaN

Nearest $100K burden peer: Alabama (+ $0 state tax on $100K)

Instrument codes from this state’s IRS + DOR withholding stack (burden rank, structure class, headline gap, FICA line, bracket book, photo-finish peer, net $100K), not a generic recommendation.

The bottom line

A single filer earning $100,000 in Illinois keeps $74,367 after federal income tax, FICA, and Illinois's flat 4.95% state tax, an effective rate of 25.6% (state tax alone: $4,810) - above the national median total tax burden.

Single filer taking the standard deduction, wage income only. Federal and FICA are identical in every state - Illinois's difference is its state income tax line.

$74,367 Take-home on $100K (single)
25.6% Effective rate (fed + FICA + state)
$4,810 State income tax on $100K
#38 of 51 by total burden (1 = lowest)

Every figure on PlainSalary is computed directly from official IRS, state Department of Revenue, and SSA tax data, no number is typed in by an editor. State tax figures are computed directly from official Department of Revenue data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.

Illinois vs all states by $100K state income tax

Where this state's computed state-tax dollars sit among every jurisdiction on PlainSalary (lower is better)

$4,810 Higher than most lower burden than 24% of 51 states

States and D.C., banded by state income tax on a $100K single filer

Each bar is a $0.001K-wide band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source IRS · state DOR schedules · PlainSalary computation · 2026 tax year

Illinois take-home pay by salary (2026, single)

What's left after federal income tax, FICA, and Illinois state tax.

$50,000 gross

$40,017

take-home · 20.0% effective tax

$100,000 gross

$74,367

take-home · 25.6% effective tax

$200,000 gross

$139,164

take-home · 30.4% effective tax

Where Illinois sits on the state-tax scale

States immediately above and below Illinois by total tax burden on a $100K single filer (state income tax shown).

CT

Connecticut

6.99% top marginal rate
Structure
Flat tax
Burden @ $100K
$4,750

AL

Alabama

5.00% top marginal rate
Structure
Flat tax
Burden @ $100K
$4,810
Selected

IL

Illinois

4.95% top marginal rate
Structure
Flat tax
Burden @ $100K
$4,810

SC

South Carolina

6.00% top marginal rate
Structure
Flat tax
Burden @ $100K
$4,840

NY

New York

10.90% top marginal rate
Structure
Flat tax
Burden @ $100K
$4,860

Does Illinois's 4.95% headline rate tell the truth at $100K?

Low rate, high reality (flat-tax bite)High rate, high realityLow rate, low realityHigh rate, overstates $100K reality2.0%4.9%7.9%10.9%13.8%0.3%2.4%4.4%6.5%8.6%Top marginal rate (%)Actual state-only effective rate at $100K (%)OR, Top marginal rate (%): 9.9% · Actual state-only effective rate at $100K (%): 8.18%HI, Top marginal rate (%): 11% · Actual state-only effective rate at $100K (%): 6.16%ME, Top marginal rate (%): 7.15% · Actual state-only effective rate at $100K (%): 6.03%DC, Top marginal rate (%): 10.75% · Actual state-only effective rate at $100K (%): 5.53%DE, Top marginal rate (%): 6.6% · Actual state-only effective rate at $100K (%): 5.37%KS, Top marginal rate (%): 5.58% · Actual state-only effective rate at $100K (%): 5.29%MN, Top marginal rate (%): 9.85% · Actual state-only effective rate at $100K (%): 5.28%CA, Top marginal rate (%): 13.3% · Actual state-only effective rate at $100K (%): 5.22%MA, Top marginal rate (%): 9% · Actual state-only effective rate at $100K (%): 5%VA, Top marginal rate (%): 5.75% · Actual state-only effective rate at $100K (%): 4.99%NY, Top marginal rate (%): 10.9% · Actual state-only effective rate at $100K (%): 4.86%SC, Top marginal rate (%): 6% · Actual state-only effective rate at $100K (%): 4.84%AL, Top marginal rate (%): 5% · Actual state-only effective rate at $100K (%): 4.81%IL, Top marginal rate (%): 4.95% · Actual state-only effective rate at $100K (%): 4.81%CT, Top marginal rate (%): 6.99% · Actual state-only effective rate at $100K (%): 4.75%MD, Top marginal rate (%): 6.5% · Actual state-only effective rate at $100K (%): 4.54%VT, Top marginal rate (%): 8.75% · Actual state-only effective rate at $100K (%): 4.49%ID, Top marginal rate (%): 5.3% · Actual state-only effective rate at $100K (%): 4.45%GA, Top marginal rate (%): 5.19% · Actual state-only effective rate at $100K (%): 4.35%MT, Top marginal rate (%): 5.65% · Actual state-only effective rate at $100K (%): 4.29%NJ, Top marginal rate (%): 10.75% · Actual state-only effective rate at $100K (%): 4.25%MI, Top marginal rate (%): 4.25% · Actual state-only effective rate at $100K (%): 4.01%OK, Top marginal rate (%): 4.5% · Actual state-only effective rate at $100K (%): 4%WV, Top marginal rate (%): 4.82% · Actual state-only effective rate at $100K (%): 3.98%WI, Top marginal rate (%): 7.65% · Actual state-only effective rate at $100K (%): 3.96%MO, Top marginal rate (%): 4.7% · Actual state-only effective rate at $100K (%): 3.94%NE, Top marginal rate (%): 4.55% · Actual state-only effective rate at $100K (%): 3.85%UT, Top marginal rate (%): 4.5% · Actual state-only effective rate at $100K (%): 3.78%AR, Top marginal rate (%): 3.9% · Actual state-only effective rate at $100K (%): 3.72%CO, Top marginal rate (%): 4.4% · Actual state-only effective rate at $100K (%): 3.69%NM, Top marginal rate (%): 5.9% · Actual state-only effective rate at $100K (%): 3.57%RI, Top marginal rate (%): 5.99% · Actual state-only effective rate at $100K (%): 3.4%MS, Top marginal rate (%): 4% · Actual state-only effective rate at $100K (%): 3.36%NC, Top marginal rate (%): 3.99% · Actual state-only effective rate at $100K (%): 3.35%IA, Top marginal rate (%): 3.8% · Actual state-only effective rate at $100K (%): 3.19%PA, Top marginal rate (%): 3.07% · Actual state-only effective rate at $100K (%): 3.07%KY, Top marginal rate (%): 3.5% · Actual state-only effective rate at $100K (%): 2.94%IN, Top marginal rate (%): 2.95% · Actual state-only effective rate at $100K (%): 2.92%LA, Top marginal rate (%): 3% · Actual state-only effective rate at $100K (%): 2.52%OH, Top marginal rate (%): 2.75% · Actual state-only effective rate at $100K (%): 2.31%AZ, Top marginal rate (%): 2.5% · Actual state-only effective rate at $100K (%): 2.1%ND, Top marginal rate (%): 2.5% · Actual state-only effective rate at $100K (%): 0.69%
Illinois is highlighted among all 42 states that tax wage income. Illinois's top rate and its actual $100K effective rate are nearly identical - a flat or early-bite structure where the headline number is close to reality. Benchmarks: 5.30% median top rate, 4.25% median $100K state-effective rate across taxed states.
Read the chart as a table (all 42 taxed states)
StateTop marginal rateActual $100K state-effective rate
Alabama5.00%4.81%
Arizona2.50%2.10%
Arkansas3.90%3.72%
California13.30%5.22%
Colorado4.40%3.69%
Connecticut6.99%4.75%
Delaware6.60%5.37%
District of Columbia10.75%5.53%
Georgia5.19%4.35%
Hawaii11.00%6.16%
Idaho5.30%4.45%
Illinois (this state)4.95%4.81%
Indiana2.95%2.92%
Iowa3.80%3.19%
Kansas5.58%5.29%
Kentucky3.50%2.94%
Louisiana3.00%2.52%
Maine7.15%6.03%
Maryland6.50%4.54%
Massachusetts9.00%5.00%
Michigan4.25%4.01%
Minnesota9.85%5.28%
Mississippi4.00%3.36%
Missouri4.70%3.94%
Montana5.65%4.29%
Nebraska4.55%3.85%
New Jersey10.75%4.25%
New Mexico5.90%3.57%
New York10.90%4.86%
North Carolina3.99%3.35%
North Dakota2.50%0.69%
Ohio2.75%2.31%
Oklahoma4.50%4.00%
Oregon9.90%8.18%
Pennsylvania3.07%3.07%
Rhode Island5.99%3.40%
South Carolina6.00%4.84%
Utah4.50%3.78%
Vermont8.75%4.49%
Virginia5.75%4.99%
West Virginia4.82%3.98%
Wisconsin7.65%3.96%

Illinois 2026 bracket schedule (single filer)

Taxable income Marginal rate
$0 – $1,000,000,000,000,000 4.95%

Source: Tax Foundation, 2026 State Individual Income Tax Rates and Brackets, cross-checked against the Illinois Department of Revenue. Single-filer schedule.

Quick Illinois state-tax estimate

Enter taxable income for the Illinois state portion (single filer, 2026). For the full federal + FICA picture use the calculator.

Similar states nationwide

Peers matched on tax attributes across all 51 jurisdictions, a different lens from the burden-rank neighbors below.

Similar top marginal rate

Wage-taxing states closest to Illinois’s 4.95% statutory ceiling.

  • Alabama · 5.00% top rate · $4,810 state tax on $100K
  • West Virginia · 4.82% top rate · $3,980 state tax on $100K
  • Georgia · 5.19% top rate · $4,350 state tax on $100K
  • Missouri · 4.70% top rate · $3,940 state tax on $100K
  • Idaho · 5.30% top rate · $4,450 state tax on $100K
  • Nebraska · 4.55% top rate · $3,850 state tax on $100K

Similar $100K take-home pay

Jurisdictions where a $100,000 single filer keeps roughly $74,367 after federal, state, and FICA.

Read with Illinois

Illinois's flat 4.95% line behaves differently from graduated neighbors. These peers sit closest on the $100K burden ladder.

  • Alabama · $4,810 state tax on $100K · $NaN take-home
  • South Carolina · $4,840 state tax on $100K · $NaN take-home
  • New York · $4,860 state tax on $100K · $NaN take-home
  • Connecticut · $4,750 state tax on $100K · $NaN take-home

Effective vs marginal rate · Calculate my Illinois take-home · Methodology