Federal + State + FICA
Colorado Income Tax Calculator – Free Estimator
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
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Tax estimate
Your results will appear here after you run the calculator.
What is the Colorado Tax Calculator?
A high-precision engine calibrated for the Centennial State’s 4.40% flat tax.
4.40% Flat Rate
Colorado uses a simplified flat income tax rate. Our tool applies the latest 2024 reduction automatically.
Standard Deduction
Includes the Federal standard deduction amounts which Colorado uses as the baseline for state taxable income.
Federal Integration
Calculates federal liabilities across all 7 IRS tiers (10% to 37%) so you see your total tax burden in one place.
FICA Deductions
Computes Social Security and Medicare withholdings accurately to provide a true Colorado net pay estimate.
TABOR Compliance
Our tool accounts for the "Taxpayer's Bill of Rights" logic that drives Colorado's annual rate adjustments.
Self-Employment
A specialized module for Colorado freelancers to calculate the 15.3% SE tax alongside state flat-tax obligations.
Annual Updates
Our tool is updated yearly based on the Colorado Department of Revenue (DOR) legislative changes.
Effective Rate
View the real percentage of your income that goes to Denver and Washington after all deductions are applied.
Why Use Our Colorado Tax Tool?
Navigating one of the nation's most transparent tax systems with ease.
Front Range Budgeting
Essential for residents in Denver, Boulder, or Colorado Springs to plan for the state's unique cost of living.
Relocation Analysis
Moving from a high-tax state like CA? See exactly how much more of your salary stays in your pocket in CO.
Real-Time Results
Skip the complex DR 0104 worksheets. Get a professional-grade Colorado tax estimate in under a second.
Privacy Guaranteed
Your financial data never leaves your device. All Colorado tax math is performed entirely within your browser.
Salary Negotiation
Before signing that offer for a new role in the Tech Center, know exactly what your monthly take-home pay will be.
Eliminate Errors
Avoid manual mistakes by using our pre-tested algorithms that follow Colorado's latest simplified tax code.
Free Education
Learn how the Colorado flat tax system interacts with your federal obligations to impact your total wealth.
Verify Withholding
Ensure your employer is using the correct DR 0004 form allowances to avoid a surprise tax bill in April.
How to Lower Your Colorado Taxes?
Strategic ways to reduce your liability and grow your Centennial State wealth.
CollegeInvest 529
Colorado offers a dollar-for-dollar deduction for all contributions made to a state-sponsored 529 plan.
Pension Subtraction
Residents 55+ can exclude up to $20,000 (and 65+ up to $24,000) of retirement income from state taxation.
Maximize 401(k)
Pre-tax contributions reduce your federal AGI, which automatically lowers your Colorado taxable income.
HSA Contributions
Colorado recognizes the tax-exempt status of HSAs. Contributions reduce your state taxable income dollar-for-dollar.
Energy Credits
Look into state-specific credits for energy-efficient home improvements and electric vehicle (EV) purchases.
CO Child Tax Credit
Colorado offers a refundable state child tax credit for low-to-moderate earners to help with family expenses.
Business Deductions
For Colorado freelancers, every business-related expense is a potential deduction against your gross state revenue.
Professional Review
Use our calculator to gather your data, then consult a CPA to find high-level Colorado-specific tax shelters.
