Colorado Income Tax Calculator
Estimate your 2026 federal and Colorado state income tax, FICA and take-home pay from your income and filing status.
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About the Colorado Income Tax Calculator
This Colorado income tax calculator estimates your 2026 federal income tax, Social Security and Medicare tax and Colorado state income tax from your income and filing status. It applies the CO state brackets, standard deduction and personal exemption, and shows your take-home pay.
How to use it
- Enter your annual income and filing status.
- Add pre-tax deductions such as 401(k) and HSA contributions.
- Press Calculate tax to see your federal, FICA and Colorado state tax and take-home pay.
Colorado income tax brackets for 2026 (single filers)
Colorado taxes wage income with a flat rate of 4.4%. The state standard deduction is $16,100 and the personal exemption is $0 for single filers where applicable.
| Taxable income | Rate |
|---|---|
| $0 and up | 4.4% |
Source: Tax Foundation, 2026 state individual income tax rates and brackets. Local taxes are not included.
Colorado state income tax at common salaries
| Gross income | CO income tax | Effective rate |
|---|---|---|
| $40,000 | $1,052 | 2.63% |
| $60,000 | $1,932 | 3.22% |
| $80,000 | $2,812 | 3.51% |
| $100,000 | $3,692 | 3.69% |
| $150,000 | $5,892 | 3.93% |
Single filer, after the state standard deduction and personal exemption.
Frequently asked questions
How much is state income tax in Colorado?
As of 2026, Colorado has a flat income tax rate of 4.4%.
What is the Colorado standard deduction?
For single filers the Colorado standard deduction is $16,100. Rules can differ by filing status.
How much tax would I pay on $80,000 in Colorado?
A single filer with $80,000 of income pays about $2,812 in CO state income tax, an effective rate of 3.51%.
Does Colorado tax Social Security?
Most states do not tax Social Security benefits, but a few do. Check the state revenue department for current rules.
Does this include local income tax?
No. Some cities and counties levy local income taxes. Confirm with your local government.
Last reviewed: November 2026. Estimates only, not tax advice.