Colorado Income Tax Calculator
Estimate your 2026 Colorado state income tax in seconds. Enter your annual income and filing status — this free Colorado income tax calculator applies the verified 2026 Colorado brackets, standard deduction, exemptions and credits. Runs entirely in your browser.
In 2026, Colorado taxes income at a flat 4.4% rate. Colorado offers a $16,100 standard deduction for single filers ($32,200 joint). Colorado conforms to the federal standard deduction.
Colorado 2026 Income Tax Brackets
| Taxable income (Single) | Rate |
|---|---|
| All taxable income | 4.4% |
Marginal rates: only income inside each band is taxed at that band's rate.
Frequently Asked Questions
What is the Colorado income tax rate for 2026?
Colorado taxes income at a flat 4.4% rate.
What deductions and exemptions does Colorado offer?
Colorado offers a $16,100 standard deduction for single filers ($32,200 joint).
How accurate is this Colorado income tax estimate?
It is an annualized estimate: your income minus the 2026 standard deduction (and any state exemptions/credits shown), run through 2026 marginal brackets. It does not include pre-tax deductions like 401(k) contributions, itemized deductions, phaseouts, or local income taxes. Your actual liability can differ.
Sources
Tax figures verified September 2026 for tax year 2026.
Estimate only — not tax advice. This calculator annualizes your income, subtracts the 2026 standard deduction (and state personal exemptions/credits where shown), and applies 2026 marginal brackets. It does not model pre-tax deductions (401(k), health insurance), itemized deductions, credits you may qualify for, phaseouts, or local/city/county income taxes. Consult a tax professional for your situation.