Free Tool
Colorado Income Tax Calculator
Estimate your 2026 Colorado state and federal income tax liability for W-2, self-employment, and investment income.
Total Tax Liability
for 2026
Effective Rate
13.7%
Federal Marginal
22.0%
Cap Gains Rate
15.0%
State Rate
4.4%
This calculator provides estimates based on 2026 federal and state tax rates using the standard deduction. Actual tax liability may vary based on itemized deductions, tax credits, AMT, and other factors. Consult a tax professional for personalized advice.
How Colorado taxes your income
Flat 4.4%
Colorado applies a flat 4.4% state income tax to your taxable income — the same rate at every income level — on top of federal income tax.
Colorado income tax questions.
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