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CO · 2026 Tax Calculators

Colorado Tax Calculators

Flat rateTop rate 4.4%

Colorado tax snapshot

Tax structure
Flat 4.4%
Tax base
Federal taxable income
Standard deduction
Via federal

All Colorado calculators

Every tool shows combined federal + Colorado results. Rates verified 2026-06-22 from CO Dept. of Revenue — Individual Income Tax (4.4% flat rate, 2026).

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Scope note: Excludes Colorado local taxes and any TABOR-triggered temporary rate adjustments that may apply in a given year. SDI is not applicable in Colorado.