Colorado's income tax rate and how it applies to your paycheck
Colorado has a flat income tax rate of 4.63% on federal taxable income. This rate applies to all residents regardless of income level — whether you earn $30,000 or $300,000 per year, you pay the same percentage. The state does not use tax brackets the way some states do.
Your employer withholds this tax from each paycheck based on the W-4 form you file. If you are self-employed, you pay Colorado income tax when you file your state return, usually due by April 15 along with your federal return. The 4.63% applies to wages, investment income, retirement distributions, and most other income sources.
Colorado allows you to deduct the federal income tax you paid from your state taxable income, which lowers the amount subject to the 4.63% rate. This deduction is one reason Colorado's effective tax rate — the actual percentage you pay after deductions — is lower than the stated 4.63%.
Key Takeaways
- Colorado's income tax rate is 4.63% on all income levels, with no tax brackets or progressive rates.
- You can deduct federal income taxes paid, which reduces the income subject to Colorado's 4.63% rate.
- Sales tax in Colorado ranges from 4% to 8.3% depending on your county and city, with groceries taxed at a lower rate.
- Property tax rates vary by county and school district, typically ranging from 0.4% to 0.6% of assessed home value.
- Colorado offers tax credits for dependent children, child care expenses, and low-income households that can reduce what you owe.
Colorado sales tax: state rate plus local additions
Colorado's base sales tax rate is 4%, but most purchases are subject to additional local taxes. Counties and cities add their own sales taxes on top of the state rate, bringing the total to between 4% and 8.3% depending on where you shop. Denver, for example, has a combined rate of 8.81%, while rural areas may be closer to 4%.
Groceries are taxed at a lower rate than other goods. Food purchased at a grocery store is subject to only the state's 4% rate plus any local tax, but not the full combined rate that applies to restaurant meals or non-food items. This distinction matters if you are budgeting for household expenses.
Some items are not taxed at all in Colorado. Prescription medications, medical equipment, and certain services fall outside the sales tax. If you are unsure whether a specific purchase is taxed, the retailer can tell you before you check out.
Property tax: how your home's value affects what you owe
Colorado property tax is calculated as a percentage of your home's assessed value, not its market value. The state assesses residential property at 6.45% of market value, then applies a tax rate that varies by county and school district. This means two homes worth the same amount may have different property tax bills depending on location.
Property tax rates typically range from 0.4% to 0.6% of assessed value across Colorado counties. A home assessed at $300,000 might owe between $1,200 and $1,800 per year, but the exact amount depends on your specific county, school district, and any local bond measures. You can find your county assessor's office online to see the rate for your area.
Colorado offers a property tax exemption for homeowners over 65 with limited income, and a separate exemption for disabled veterans. If you meet the income and age requirements, you may pay significantly less. The exemption amount changes yearly, so check with your county assessor to see if you may have access to.
Tax credits that reduce what Colorado residents owe
Colorado offers a dependent child tax credit of $3,750 per child under 17, which directly reduces the amount of state income tax you owe. This is not a deduction — it subtracts from your tax bill dollar-for-dollar. If you owe $2,000 in Colorado income tax and have one may have access to child, the credit brings that down to $0 (you would owe nothing).
A child care and dependent care credit is available if you paid for care so you could work. The credit covers up to $3,000 of expenses per dependent and reduces your tax bill by a percentage of that amount. You will need receipts from the care provider and their tax identification number to claim it.
Low-income households may may have access to for the Colorado earned income tax credit, which works similarly to the federal version. The state credit is a percentage of the federal credit you receive, so the amount varies based on your income and family size. You claim it when you file your state return.
How Colorado's tax rate compares to other states
Colorado's 4.63% income tax rate is lower than the national average. States like California (up to 13.3%), New York (up to 10.9%), and Oregon (up to 9.9%) have higher top rates. However, some states like Texas, Florida, and Nevada have no income tax at all, which makes them lower overall.
When you factor in sales tax and property tax together, Colorado's total tax burden falls in the middle range nationally. The combination of a moderate income tax, moderate sales tax, and property tax that varies by location means your total tax bill depends heavily on where in Colorado you live and what you earn.
Self-employment tax and business income in Colorado
If you are self-employed, you owe Colorado income tax on your net business income at the same 4.63% rate as wage earners. You also owe federal self-employment tax (Social Security and Medicare), which is separate from Colorado state tax. Colorado does not add a separate self-employment tax on top of the state income tax.
Colorado allows you to deduct business expenses — supplies, equipment, home office costs, and vehicle mileage — before calculating the 4.63% tax. Keep receipts and mileage logs to support these deductions. You can also deduct the federal self-employment tax you paid, which further reduces your Colorado taxable income.
Quarterly estimated tax payments are required if you expect to owe more than $500 in Colorado income tax for the year. The state provides a worksheet to calculate what you owe each quarter. Paying on time avoids penalties and interest charges.
Tax filing important date and where to file in Colorado
Colorado income tax returns are due by April 15 each year, the same important date as federal returns. You file with the Colorado Department of Revenue, either by mail or electronically through their website. If you file your federal return electronically, you can file your Colorado return the same way.
If you cannot file by April 15, you can request an extension, but it only extends the filing important date — not the payment important date. If you owe tax, you should pay by April 15 to avoid interest and penalties, even if you have not filed yet.
Colorado offers free tax preparation information through the Volunteer Income Tax information (VITA) program if your household income is below a certain threshold. Local nonprofits and libraries often host VITA sites during tax season. You can find a location near you through the IRS website.
Frequently Asked Questions
Does Colorado tax retirement income and Social Security?
Colorado does not tax Social Security benefits. Retirement income from pensions and 401(k) withdrawals is taxed at the 4.63% rate, but you can deduct a portion of retirement income depending on your age and total income. Residents 55 and older may may have access to for a retirement income exemption.
What is the difference between assessed value and market value for property tax?
Market value is what your home would sell for today. Assessed value is 6.45% of that market value, used only to calculate property tax. A $400,000 home has an assessed value of about $25,800, and your property tax is calculated on that lower figure, not the full $400,000.
Can I deduct state income tax on my federal return?
Yes, you can deduct Colorado state income tax paid on your federal return, but only if you itemize deductions instead of taking the standard deduction. The deduction is capped at $10,000 per year for all state and local taxes combined (income, sales, and property tax together).
Is there a tax penalty for moving to Colorado from another state?
No. Colorado taxes you on income earned while you are a resident. If you move to Colorado mid-year, you owe Colorado tax only on income earned after you became a resident. You will file part-year returns in both Colorado and your previous state.
Do I have to pay sales tax on online purchases from out-of-state sellers?
Yes. Colorado requires sales tax on most online purchases, even from sellers outside the state. Large retailers like Amazon collect and remit this tax automatically. For smaller sellers, you may owe "use tax" — which is the same rate as sales tax — when you file your state return.