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Enter your income information to see your estimated Colorado take-home pay and tax breakdown.
How Colorado Taxes Work
Understanding your paycheck deductions in Colorado
Colorado State Tax
Colorado uses a flat tax rate of 4.40% on all taxable income, making tax calculations straightforward.
Federal Taxes
Federal income tax uses progressive brackets ranging from 10% to 37% based on your income level and filing status.
FICA Taxes
Social Security (6.2%) and Medicare (1.45%) are automatically deducted from every paycheck for all employees.
Local Taxes May Apply
Denver and some localities have additional taxes These local taxes are not included in this calculator. Check with your local tax authority for specific rates.
Colorado Tax Facts
- State abbreviation: CO
- Tax type: Flat Tax
- Tax rate: 4.40%
- Local taxes: Yes, may apply
Federal Tax Resources
- 2025 federal brackets: 10% to 37%
- Standard deduction (Single): $15,750
- Standard deduction (Married): $31,500
- Social Security wage base: $176,100
Frequently Asked Questions
Common questions about Colorado paycheck calculations and taxes
Other Flat Tax States
Explore paycheck calculators for states with similar tax structures
Arizona has a flat income tax rate of 2.5% on all taxable income.
Georgia transitioned to a flat tax rate of 5.39% for the 2025 tax year.
Idaho has a flat-rate income tax system with a 5.30% rate on taxable income above small thresholds.
Illinois has a flat income tax rate of 4.95%.