Federal + State + FICA
Colorado Income Tax Calculator – Estimate CO State Taxes
Estimate federal, state, and local income tax for any US location. Enter a ZIP code to see your state on the map and get accurate state and local tax (e.g. NYC).
Your financial details
Enter a ZIP code to highlight your state
Tax estimate
Your results will appear here after you run the calculator.
What is the Colorado Income Tax Calculator?
A specialized tool for navigating the Centennial State's unique flat tax and TABOR rules.
4.40% Flat Rate
Colorado uses a single flat tax rate for all income levels, simplified to match state revenue goals.
TABOR Refunds
Includes calculations for potential Taxpayer's Bill of Rights refunds during state revenue surplus years.
FAMLI Deduction
Automatically factors in the 0.45% employee premium for Colorado's Paid Family and Medical Leave.
Federal Interplay
Calculates federal FICA taxes (7.65%) and federal income tax alongside your Colorado state liability.
Local Tax Rules
Accounts for the fact that Colorado generally prohibits cities from levying additional income taxes.
Self-Employment
Calculates the 15.3% federal self-employment tax for Colorado freelancers and gig economy workers.
Standard Deduction
Reconciles your federal AGI with the Colorado taxable income base to ensure accurate state reporting.
2024/2025 Updates
Updated with the latest Department of Revenue adjustments and state-mandated rate changes.
Why Use Our Colorado Tax Planning Tool?
Ensuring financial precision in a state with high living costs and unique refund laws.
Net Pay Clarity
Know exactly what your paycheck will look like after the 4.40% flat tax and FAMLI premiums.
Denver/Boulder Budgeting
Accurately calculate take-home pay to better manage the high housing costs in the Front Range area.
Relocation Math
Moving from California or Texas? Compare how Colorado’s tax system impacts your overall wealth.
Instant Estimates
Skip the manual Form DR-0104 worksheets and get a professional-grade tax projection in milliseconds.
100% Privacy
Your financial data remains on your device. We do not store or track any of your personal entries.
Retirement Planning
Colorado offers generous Social Security subtractions; model your savings to see the long-term benefit.
Effective Rate
Visualizes the true percentage of your gross salary that goes to the state versus federal authorities.
Withholding Audit
Ensure your employer is withholding the correct flat amount to avoid a surprise tax bill in April.
How to Reduce Your Colorado Tax Liability?
Strategic ways to leverage state credits and keep more of your earnings.
CollegeInvest 529
Deduct 100% of your contributions to a Colorado CollegeInvest plan from your state taxable income.
CO Child Tax Credit
Qualifying families can claim a state-level refundable child tax credit based on their income levels.
HSA Contributions
Reduce both your federal and Colorado state taxable income by maximizing your Health Savings Account.
PTC Rebate
Lower-income residents may qualify for the Property Tax/Rent/Heat (PTC) rebate through state programs.
EV Credits
Colorado offers one of the most generous electric vehicle tax credits in the country for new purchases.
Pre-Tax Retirement
Contributing to a 401(k) lowers your initial Federal AGI, which is the baseline for Colorado taxation.
Charitable Gifts
Deduct donations to qualified Colorado non-profits if you choose to itemize your state return.
Professional Advice
Use our data as a foundation for a detailed discussion with a Colorado-certified CPA or professional.
