Skip to main content
USTaxGauge
Tax year 2026

Colorado vs Kansas Income Tax — 2026

A single filer earning $100,000 pays $1,089 less per year in Colorado than in Kansas — $91 a month. Colorado charges $3,692; Kansas charges $4,780.

Why this pair has a page: bordering states.

Colorado at $100K
$3,692
3.69%
Kansas at $100K
$4,780
4.78%
Annual difference
$1,089
$91 a month
National ranks
25 vs 41
of 50, lowest tax first

The bill at every income

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

Colorado and Kansas income tax compared at seven income levels, 2026
Gross incomeColorado taxKansas taxDifference
$50,000$1,492$1,990$499 less in CO
$75,000$2,592$3,385$794 less in CO
$100,000$3,692$4,780$1,089 less in CO
$150,000$5,892$7,570$1,679 less in CO
$250,000$10,292$13,150$2,859 less in CO
$500,000$21,292$27,100$5,809 less in CO
$1,000,000$43,292$55,000$11,709 less in CO
Annual state income tax, Colorado versus Kansas
CO at $50,000: $1,492CO at $50,000$1,492KS at $50,000: $1,990KS at $50,000$1,990CO at $75,000: $2,592CO at $75,000$2,592KS at $75,000: $3,385KS at $75,000$3,385CO at $100,000: $3,692CO at $100,000$3,692KS at $100,000: $4,780KS at $100,000$4,780CO at $150,000: $5,892CO at $150,000$5,892KS at $150,000: $7,570KS at $150,000$7,570CO at $250,000: $10,292CO at $250,000$10,292KS at $250,000: $13,150KS at $250,000$13,150CO at $500,000: $21,292CO at $500,000$21,292KS at $500,000: $27,100KS at $500,000$27,100CO at $1,000,000: $43,292CO at $1,000,000$43,292KS at $1,000,000: $55,000KS at $1,000,000$55,000

How the two systems differ

Colorado and Kansas income tax systems compared
ColoradoKansas
Tax structureFlat rateGraduated
Top marginal rate4.4%5.58%
Number of brackets12
Standard deduction (single)$16,100$3,605
Personal exemptionNone$9,160
Local income taxesNoYes
Capital gainsordinaryordinary
Population (2024)5,957,4932,970,606

By filing status

Colorado and Kansas tax on $100,000 by filing status, 2026
Filing statusColoradoKansasDifference
Single$3,692$4,780$1,089 less in CO
Married filing jointly$2,983$3,923$940 less in CO
Married filing separately$3,692$4,752$1,060 less in CO
Head of household$3,337$4,507$1,170 less in CO

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, Colorado costs $1,089 less per year than Kansas — $91 a month.

Colorado compared with Kansas at $100,000
ColoradoKansasDifference
State income tax$3,692$4,780$1,089
Per month$308$398$91
Effective rate3.69%4.78%1.09 pts
Marginal rate4.4%5.58%1.18 pts
Standard deduction$16,100$3,605$12,495
Taxable income$83,900$87,235$3,335
Tax structureFlat rateGraduated
Local income taxesNoYes

Local taxes are not included above. Kansas 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: Colorado · Kansas · methodology

Local income taxes change this picture

What this comparison leaves out

Sources for both states

  1. 1.Colorado Department of RevenueState revenue department
    2026 Colorado Withholding Worksheet for Employers (DR 1098, rev. 10/21/25)
    https://tax.colorado.gov/sites/tax/files/documents/DR_1098_Colorado_Withholding_Worksheet_for_Employees.pdf
    Retrieved · Worksheet 1 line 2c: "Multiply line 2b by 4.40% (0.044)" for tax year 2026.
  2. 2.Kansas Department of RevenueState revenue department
    2026 Kansas Individual Estimated Tax (K-40ES), including the 2026 tax computation schedules and standard deduction chart
    https://www.ksrevenue.gov/pdf/k-40es26.pdf
    Retrieved
  3. 3.Tax FoundationResearch organisation (cross-check)
    State Individual Income Tax Rates and Brackets, 2026
    https://taxfoundation.org/data/all/state/state-income-tax-rates-2026/
    Retrieved

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