|Tax Bracket (Single)||Marginal Tax Rate|
|Tax Bracket (Couple)||Marginal Tax Rate|
Colorado has two marginal tax brackets, ranging from 4.63% (the lowest Colorado tax bracket) to 4.63% (the highest Colorado tax bracket). Each marginal rate only applies to earnings within the applicable marginal tax bracket, which are the same in Colorado for single filers and couples filing jointly. The Federal Income Tax, by contrast, has different tax brackets for married, single, and Head of Household taxpayers.
Our Colorado tax brackets have been updated for tax year 2013. States often adjust their tax brackets on a yearly basis, so make sure you are using the current 2013 tax brackets!
Your 2013 income tax return is due on April 15th, 2014. The IRS and Colorado are now accepting eFiled returns and processing refunds, so you can start your online tax return today for free with TurboTax.
If you would like to file your Colorado income tax return by mail, you can download 2013 Colorado tax forms here.
Technically, you don't have just one "tax bracket" - you pay all of the Colorado marginal tax rates from the lowest tax bracket to the tax bracket in which you earned your last dollar. For comparison purposes, however, your Colorado tax bracket is the tax bracket in which your last earned dollar in any given tax period falls.
You can think of the bracketed income tax as a flat amount for all of the money you earned up to your highest tax bracket, plus a marginal percentage of any amount you earned over that.
You can use the income tax estimator to the left to calculate your approximate Colorado and Federal income tax based on the most recent tax brackets.
Keep in mind that this estimator assumes all income is from wages, assumes the standard deduction, and does not account for tax credits.
For a more detailed estimate that takes these factors into account, click "View Detailed Estimate" (this will will redirect to an external website).Deductions
When calculating your Colorado income tax, keep in mind that the Colorado state income tax brackets are only applied to your adjusted gross income (AGI) after you have made any qualifying deductions.
Qualifying deductions might include an itemized deduction, the Colorado standard deduction, exemptions for dependants, business expenses, etc.
Remember that Colorado may have very different deduction laws from the Federal Income Tax, so you may have to write a whole new list of deductions for your Colorado income tax return.
|Download a .CSV file of the Colorado income tax brackets|
|Download or print Colorado income tax forms|
- The Colorado tax brackets on this page were last updated from the Colorado Department of Revenue in August, 2013. Please contact us if any of our Colorado tax data is incorrect or out of date.
- Colorado tax return forms are available from the TaxFormFinder.org or the Colorado Department of Revenue.
- Before the official 2014 Colorado income tax brackets are released, the brackets used on this page are an estimate based on the previous year's brackets. These numbers are subject to change if new Colorado tax tables are released.
- The income tax estimator tool is provided by Tax-Rates.org.