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Tax year 2026

Colorado vs Utah Income Tax — 2026

A single filer earning $100,000 pays $758 less per year in Colorado than in Utah — $63 a month. Colorado charges $3,692; Utah charges $4,450.

Why this pair has a page: bordering states.

Colorado at $100K
$3,692
3.69%
Utah at $100K
$4,450
4.45%
Annual difference
$758
$63 a month
National ranks
25 vs 38
of 50, lowest tax first

The bill at every income

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

Colorado and Utah income tax compared at seven income levels, 2026
Gross incomeColorado taxUtah taxDifference
$50,000$1,492$1,666$174 less in CO
$75,000$2,592$3,103$512 less in CO
$100,000$3,692$4,450$758 less in CO
$150,000$5,892$6,675$783 less in CO
$250,000$10,292$11,125$833 less in CO
$500,000$21,292$22,250$958 less in CO
$1,000,000$43,292$44,500$1,208 less in CO
Annual state income tax, Colorado versus Utah
CO at $50,000: $1,492CO at $50,000$1,492UT at $50,000: $1,666UT at $50,000$1,666CO at $75,000: $2,592CO at $75,000$2,592UT at $75,000: $3,103UT at $75,000$3,103CO at $100,000: $3,692CO at $100,000$3,692UT at $100,000: $4,450UT at $100,000$4,450CO at $150,000: $5,892CO at $150,000$5,892UT at $150,000: $6,675UT at $150,000$6,675CO at $250,000: $10,292CO at $250,000$10,292UT at $250,000: $11,125UT at $250,000$11,125CO at $500,000: $21,292CO at $500,000$21,292UT at $500,000: $22,250UT at $500,000$22,250CO at $1,000,000: $43,292CO at $1,000,000$43,292UT at $1,000,000: $44,500UT at $1,000,000$44,500

How the two systems differ

Colorado and Utah income tax systems compared
ColoradoUtah
Tax structureFlat rateFlat rate
Top marginal rate4.4%4.45%
Number of brackets11
Standard deduction (single)$16,100None
Personal exemptionNone$966 credit
Local income taxesNoNo
Capital gainsordinaryordinary
Population (2024)5,957,4933,503,613

By filing status

Colorado and Utah tax on $100,000 by filing status, 2026
Filing statusColoradoUtahDifference
Single$3,692$4,450$758 less in CO
Married filing jointly$2,983$3,332$349 less in CO
Married filing separately$3,692$4,450$758 less in CO
Head of household$3,337$3,936$599 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 $758 less per year than Utah — $63 a month.

Colorado compared with Utah at $100,000
ColoradoUtahDifference
State income tax$3,692$4,450$758
Per month$308$371$63
Effective rate3.69%4.45%0.76 pts
Marginal rate4.4%4.45%0.05 pts
Standard deduction$16,100$0$16,100
Taxable income$83,900$100,000$16,100
Tax structureFlat rateFlat rate
Local income taxesNoNo

Full detail: Colorado · Utah · methodology

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.Utah State LegislatureState statute
    S.B. 60, Income Tax Rate Amendments (2026 General Session, enrolled)
    https://le.utah.gov/Session/2026/bills/enrolled/SB0060.pdf
    Retrieved · Amends Utah Code 59-10-104: tax equals state taxable income multiplied by "4.45%" (replacing "4.5%"). Effective May 6, 2026, with retrospective operation for taxable years beginning on or after January 1, 2026.

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