Colorado Income Tax Calculator 2025
Calculate your Colorado state income tax along with federal and FICA taxes. Free, accurate, and instant results.
Colorado Tax Information
Colorado has a progressive income tax system. Use our calculator below to determine your total tax liability including federal, state, and FICA taxes for the 2025 tax year.
Key Tax Facts for Colorado
- State income tax applies to residents and non-residents earning income in Colorado
- Tax rates and brackets vary based on filing status and income level
- Colorado offers various deductions and credits to reduce tax liability
- Local taxes may apply in addition to state taxes in some jurisdictions
Filing Status
Choose from Single, Married Filing Jointly, Married Filing Separately, Head of Household, or Qualifying Widow(er)
Standard Deduction
Federal standard deduction for 2025 ranges from $14,600 (single) to $29,200 (married filing jointly)
Tax Brackets
Colorado has multiple tax brackets with rates varying by income level
Tax Information
Calculating your taxes...
Tax Breakdown
Understanding Colorado Taxes
When calculating your total tax liability in Colorado, it's important to consider all three major components of the US tax system:
1. Federal Income Tax
Federal income tax applies to all US taxpayers regardless of state. The federal tax system uses progressive tax brackets, meaning higher income levels are taxed at higher rates. For 2025, federal tax rates range from 10% to 37%.
2. Colorado State Income Tax
Colorado imposes a state income tax on residents and non-residents who earn income within the state. State tax rates and regulations vary significantly from federal taxes, with different brackets, deductions, and credits available.
3. FICA Taxes
FICA (Federal Insurance Contributions Act) taxes fund Social Security and Medicare. These taxes are:
- Social Security Tax: 6.2% on income up to $168,600 (2025 limit)
- Medicare Tax: 1.45% on all income
- Additional Medicare Tax: 0.9% on income over $200,000 (single) or $250,000 (married filing jointly)
Tax Planning Tips for Colorado Residents
- Maximize contributions to tax-deferred retirement accounts like 401(k)s and IRAs
- Consider itemizing deductions if they exceed the standard deduction
- Take advantage of tax credits available at both federal and state levels
- Plan charitable contributions strategically for maximum tax benefit
- Research state-specific deductions and credits available in Colorado
Related Resources
For more information about taxes in Colorado and tax planning strategies:
- IRS Official Website - Federal tax information and forms
- Wikipedia: Taxation in Colorado
- 2025 Federal Tax Brackets - Current federal income tax rates
- Standard Deductions Guide - Federal and state deduction amounts