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Tax year 2026

Florida vs Illinois Income Tax — 2026

A single filer earning $100,000 pays $4,805 less per year in Florida than in Illinois — $400 a month. Florida charges $0; Illinois charges $4,805.

Why this pair has a page: common relocation pair.

Florida at $100K
$0
0.00%
Illinois at $100K
$4,805
4.81%
Annual difference
$4,805
$400 a month
National ranks
2 vs 42
of 50, lowest tax first

The bill at every income

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

Florida and Illinois income tax compared at seven income levels, 2026
Gross incomeFlorida taxIllinois taxDifference
$50,000$0$2,330$2,330 less in FL
$75,000$0$3,568$3,568 less in FL
$100,000$0$4,805$4,805 less in FL
$150,000$0$7,280$7,280 less in FL
$250,000$0$12,230$12,230 less in FL
$500,000$0$24,605$24,605 less in FL
$1,000,000$0$49,355$49,355 less in FL
Annual state income tax, Florida versus Illinois
FL at $50,000: $0FL at $50,000$0IL at $50,000: $2,330IL at $50,000$2,330FL at $75,000: $0FL at $75,000$0IL at $75,000: $3,568IL at $75,000$3,568FL at $100,000: $0FL at $100,000$0IL at $100,000: $4,805IL at $100,000$4,805FL at $150,000: $0FL at $150,000$0IL at $150,000: $7,280IL at $150,000$7,280FL at $250,000: $0FL at $250,000$0IL at $250,000: $12,230IL at $250,000$12,230FL at $500,000: $0FL at $500,000$0IL at $500,000: $24,605IL at $500,000$24,605FL at $1,000,000: $0FL at $1,000,000$0IL at $1,000,000: $49,355IL at $1,000,000$49,355

How the two systems differ

Florida and Illinois income tax systems compared
FloridaIllinois
Tax structureNo income taxFlat rate
Top marginal rateNone4.95%
Number of brackets—1
Standard deduction (single)—None
Personal exemption—$2,925
Local income taxesNoNo
Capital gainsnoneordinary
Population (2024)23,372,21512,710,158

By filing status

Florida and Illinois tax on $100,000 by filing status, 2026
Filing statusFloridaIllinoisDifference
Single$0$4,805$4,805 less in FL
Married filing jointly$0$4,660$4,660 less in FL
Married filing separately$0$4,805$4,805 less in FL
Head of household$0$4,805$4,805 less in FL

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, Florida costs $4,805 less per year than Illinois — $400 a month.

Florida compared with Illinois at $100,000
FloridaIllinoisDifference
State income tax$0$4,805$4,805
Per month$0$400$400
Effective rate0.00%4.81%4.81 pts
Marginal rateNone4.95%4.95 pts
Standard deduction—$0$0
Taxable income—$97,075$97,075
Tax structureNo income taxFlat rate
Local income taxesNoNo

Full detail: Florida · Illinois · methodology

What this comparison leaves out

Sources for both states

  1. 1.Florida Department of RevenueState revenue department
    FAQ: Do I have to file a personal income tax return in Florida?
    https://floridarevenue.com/faq/Pages/FAQDetails.aspx?FAQID=1466
    Retrieved · States: "Florida does not impose a personal income tax, so there are no filing requirements."
  2. 2.Florida Legislature (Florida Senate)State statute
    Florida Constitution, Article VII, Section 5 - Estate, inheritance and income taxes
    https://www.flsenate.gov/Laws/Constitution
    Retrieved · Art. VII, s. 5(a): "No tax upon estates or inheritances or upon the income of natural persons who are residents or citizens of the state shall be levied by the state, or under its authority, in excess of the aggregate of amounts which may be allowed to be credited upon or deducted from any similar tax levied by the United States or any state."
  3. 3.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.

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