Calculate your Colorado state income tax and federal tax. Colorado state income tax rate is 4.4%. Free tax calculator for Colorado residents. Accurate 2026 tax estimates.
Colorado has a state income tax rate of 4.4%.
Tax Brackets: Progressive brackets
Welcome to the most accurate and up-to-date Colorado tax calculator. Whether you're a resident of Colorado or considering moving there, understanding your tax obligations is crucial for financial planning. Colorado has a state income tax rate of 4.4%, in addition to federal income tax. With a population of 5.8M and a median household income of $77,127, Colorado residents need reliable tax calculation tools. Our free Colorado tax calculator helps you estimate both your federal and state income taxes instantly. Simply enter your annual income, select your filing status, and get accurate tax estimates based on the latest 2026 IRS tax brackets and Colorado state tax rates.
### State Tax Rate Colorado imposes a state income tax rate of 4.4% on residents' income. This is in addition to federal income tax. The state tax helps fund essential services including education, healthcare, infrastructure, and public safety throughout Colorado. ### Colorado Demographics - **Capital**: Denver - **Population**: 5.8M - **Median Household Income**: $77,127 ### Tax Filing Deadlines Colorado residents must file their federal tax returns by April 15th each year (or the next business day if April 15th falls on a weekend or holiday). State tax returns for Colorado are typically due on the same date. ### Who Needs to File? You need to file a federal tax return if your income exceeds the standard deduction for your filing status. For 2026, the standard deduction is $13,850 for single filers and $27,700 for married couples filing jointly.
### What is the state income tax rate in Colorado? The state income tax rate in Colorado is 4.4%. This is applied to your taxable income in addition to federal income tax.
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All Colorado residents are subject to federal income tax, which uses a progressive system with rates ranging from 10% to 37% for 2024. Your federal tax liability depends on your taxable income and filing status.
Colorado levies state income tax with Progressive brackets. The top marginal rate is 4.4%, which applies to the highest income earners.
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