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Colorado Income Tax Calculator
Estimate your 2026 Colorado state and federal income tax liability for W-2, self-employment, and investment income.
On $75,000 of W-2 income, a single filer in Colorado owes about $10,262 in income tax for 2026 — $7,670 federal plus $2,592 to Colorado — leaving roughly $64,738 before FICA payroll taxes.
Total tax liability
for 2026
Effective Rate
13.7%
Federal marginal
22.0%
Cap gains rate
15.0%
State rate
4.4%
2026 federal tables from IRS Rev. Proc. 2025-32; Colorado rates from the state's revenue department and statutes (2026 rates; brackets, standard deduction and exemptions from the latest published state tables, 2025 where the state has not released 2026 figures). Reviewed by Junead Khan. Last updated .
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 allows the federal standard deduction ($16,100, or $32,200 for married couples filing jointly).
Colorado income tax questions.
Yes. Colorado applies a flat 4.4% income tax to taxable income.
A flat 4.4% on taxable income, in addition to federal income tax. Colorado allows the federal standard deduction ($16,100, or $32,200 for married couples filing jointly).
On $75,000 of W-2 income (single filer), an estimated $10,262 in total income tax — including about $2,592 to Colorado, leaving roughly $64,738 after income tax (before FICA payroll taxes). Adjust income and filing status in the calculator above for your exact numbers.
About 13.68% combined federal and state income tax for a single filer, of which roughly 3.46% is Colorado state tax. FICA payroll taxes (7.65% for most employees) come on top of that.
Estimates use 2026 federal and state tax rates, and each state's own brackets, standard deduction and personal exemptions for your filing status. Your actual liability varies with itemized deductions, dependents, other credits, local taxes, and other income.
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