Colorado Tax Brackets 2025
Colorado state income tax rates for tax year 2025 — a flat 4.4% on all taxable income.
Tax year
2025
Type
Flat
Rate range
Flat 4.4%
Brackets
1
Colorado state tax at common incomes (2025)
| Taxable income | Single — tax | Single — effective | MFJ — tax | MFJ — effective |
|---|---|---|---|---|
| $50,000 | $2,200 | 4.40% | $2,200 | 4.40% |
| $75,000 | $3,300 | 4.40% | $3,300 | 4.40% |
| $100,000 | $4,400 | 4.40% | $4,400 | 4.40% |
| $150,000 | $6,600 | 4.40% | $6,600 | 4.40% |
| $250,000 | $11,000 | 4.40% | $11,000 | 4.40% |
| $500,000 | $22,000 | 4.40% | $22,000 | 4.40% |
State income tax only. Excludes federal tax, FICA, and local/city taxes. Assumes taxable income (after deductions).
About Colorado's 2025 rates
With a flat tax, your Colorado state income tax is simply 4.4% of your Colorado taxable income. Colorado uses federal taxable income as its starting point, then applies state-specific additions and subtractions. This makes filing relatively straightforward for most taxpayers. Colorado fully exempts Social Security benefits from state income tax for taxpayers aged 65 and older, and provides a partial exemption for those aged 55–64. The state sales tax rate is 2.9%, though combined local rates often bring the total above 8%.
Frequently asked questions
What are the Colorado tax brackets for 2025?
Colorado has a flat state income tax of 4.4% for tax year 2025 — applied to all taxable income regardless of filing status.
What is the top Colorado income tax rate in 2025?
4.4%.
How much Colorado state tax on $100,000 in 2025?
A single filer with $100,000 of taxable income owes $4,400 in Colorado state income tax for 2025 — an effective rate of 4.40%. Married filing jointly with the same income owes $4,400 (4.40% effective). Federal tax is separate.
Are Colorado 2025 tax brackets the same as 2024?
Bracket thresholds may have changed for 2025 via inflation indexing or legislative action. The figures on this page are the Colorado bracket thresholds in effect for tax year 2025.