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Tax year 2026

Illinois vs Michigan Income Tax — 2026

A single filer earning $100,000 pays $806 less per year in Michigan than in Illinois — $67 a month. Illinois charges $4,805; Michigan charges $3,999.

Why this pair has a page: two of the largest taxing states.

Illinois at $100K
$4,805
4.81%
Michigan at $100K
$3,999
4.00%
Annual difference
$806
$67 a month
National ranks
42 vs 29
of 50, lowest tax first

The bill at every income

Single filer, standard deduction, no dependents. State income tax only.

Illinois and Michigan income tax compared at seven income levels, 2026
Gross incomeIllinois taxMichigan taxDifference
$50,000$2,330$1,874$456 less in MI
$75,000$3,568$2,937$631 less in MI
$100,000$4,805$3,999$806 less in MI
$150,000$7,280$6,124$1,156 less in MI
$250,000$12,230$10,374$1,856 less in MI
$500,000$24,605$20,999$3,606 less in MI
$1,000,000$49,355$42,249$7,106 less in MI
Annual state income tax, Illinois versus Michigan
IL at $50,000: $2,330IL at $50,000$2,330MI at $50,000: $1,874MI at $50,000$1,874IL at $75,000: $3,568IL at $75,000$3,568MI at $75,000: $2,937MI at $75,000$2,937IL at $100,000: $4,805IL at $100,000$4,805MI at $100,000: $3,999MI at $100,000$3,999IL at $150,000: $7,280IL at $150,000$7,280MI at $150,000: $6,124MI at $150,000$6,124IL at $250,000: $12,230IL at $250,000$12,230MI at $250,000: $10,374MI at $250,000$10,374IL at $500,000: $24,605IL at $500,000$24,605MI at $500,000: $20,999MI at $500,000$20,999IL at $1,000,000: $49,355IL at $1,000,000$49,355MI at $1,000,000: $42,249MI at $1,000,000$42,249

How the two systems differ

Illinois and Michigan income tax systems compared
IllinoisMichigan
Tax structureFlat rateFlat rate
Top marginal rate4.95%4.25%
Number of brackets11
Standard deduction (single)NoneNone
Personal exemption$2,925$5,900
Local income taxesNoYes
Capital gainsordinaryordinary
Population (2024)12,710,15810,140,459

By filing status

Illinois and Michigan tax on $100,000 by filing status, 2026
Filing statusIllinoisMichiganDifference
Single$4,805$3,999$806 less in MI
Married filing jointly$4,660$3,749$912 less in MI
Married filing separately$4,805$3,999$806 less in MI
Head of household$4,805$3,999$806 less in MI

Change the assumptions

Adjust income and filing status, or swap either state. The URL updates so you can share the exact comparison.

At $100,000 as a single filer, Michigan costs $806 less per year than Illinois — $67 a month.

Illinois compared with Michigan at $100,000
IllinoisMichiganDifference
State income tax$4,805$3,999$806
Per month$400$333$67
Effective rate4.81%4.00%0.81 pts
Marginal rate4.95%4.25%0.70 pts
Standard deduction$0$0$0
Taxable income$97,075$94,100$2,975
Tax structureFlat rateFlat rate
Local income taxesNoYes

Local taxes are not included above. Michigan has localities that levy their own income tax on top of the state figure. See each state page for the rates that apply.

Full detail: Illinois · Michigan · methodology

Local income taxes change this picture

What this comparison leaves out

Sources for both states

  1. 1.Illinois Department of RevenueState revenue department
    FY 2026-15, What's New for Illinois Income Taxes
    https://tax.illinois.gov/research/publications/bulletins/fy-2026-15.html
    Retrieved · "The personal exemption amount for tax year 2026 will increase to $2,925." Also states the $500,000 / $250,000 AGI cut-off.
  2. 2.Michigan Department of TreasuryState revenue department
    Form 446, 2026 Michigan Income Tax Withholding Guide
    https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/SUW/TY2026/446_Withholding-Guide_2026.pdf
    Retrieved · Cover line: "Withholding Rate: 4.25% Personal Exemption Amount: $5,900".

Figures on this page were last checked against these sources on . Found something wrong? Report it.