Colorado Income Tax Guide for 2025
Overview
Colorado has a flat income tax rate of 4.4%. Capital gains are taxed as ordinary income. The state offers a standard deduction of $15,750 for single filers.
Income Tax Rates
Single Filers
| Income Range | Tax Rate |
|---|---|
| All income | 4.4% |
Married Filing Jointly
| Income Range | Tax Rate |
|---|---|
| All income | 4.4% |
Capital Gains Tax
Capital gains are taxed at the same rates as ordinary income.
Deductions & Exemptions
| Type | Amount |
|---|---|
| Standard Deduction (Single) | $15,750 |
| Standard Deduction (Married Filing Jointly) | $31,500 |
Additional Information
- Flat 4.40% rate for 2025; no TABOR rate reduction was triggered for tax year 2025 (the rate was 4.25% for 2024)
- Uses federal standard deduction amounts because Colorado taxable income starts from federal taxable income (2025: $15,750 single / $31,500 married filing jointly)
- Filers with federal adjusted gross income over $300,000 must add back itemized or standard deductions above $12,000 single / $16,000 joint for 2025
- Up to $24,000 retirement income deduction for age 65+
Charts
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Sources
The 2025 figures for Colorado on this page were compiled from the following official government publications:
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