4.4% flatCO
Freelance Taxes in Colorado: Complete 2026 Guide
Colorado has a low flat income tax rate of 4.4% on federal taxable income.
Quarterly Estimated Payments
CO requires quarterly estimated payments if you expect to owe $1,000 or more.
Key Tax Facts for Colorado Freelancers
- •Low flat tax rate of 4.4%
- •Starting with federal taxable income simplifies calculation
- •TABOR refunds sometimes reduce effective rates
- •Denver occupational privilege tax applies to Denver-based workers
Deductions in Colorado
Colorado starts with federal taxable income, so federal deductions automatically apply. Colorado has few state-specific adjustments.
Top Freelancer Cities in Colorado
DenverColorado SpringsAuroraBoulder
Free Tax Calculators
Estimate your total tax burden — federal plus Colorado — with our free calculators.
Tax Information Notice
This content is for informational and educational purposes only. It does not constitute tax, legal, or financial advice. Tax laws change frequently. Always consult a qualified CPA or Enrolled Agent for your specific situation.