Find more information about your Colorado income taxes below. Check your filing status and refund for any state.
Check the status of your refund using these resources:
Where’s my Colorado State tax refund?
State: Colorado
Refund Status Website: State of Colorado Revenue Online
Refund Status Phone Support: 1-303-238-7378
Online Contact Form: Colorado Department of Revenue Taxation Division
2024 State Tax Filing Deadline: April 15, 2025
Note: Please wait at least 8-10 weeks before checking the status of your refund.
Colorado tax brackets
The state of Colorado imposes a flat tax rate on its taxpayer’s income. That means regardless of income level or filing status, all individuals pay the same rate. On the federal side, you need to calculate your federal tax bracket based on your income. If you need help learning how tax brackets work you can read our guide on it.
The tax rate for 2024 was temporarily reduced to 4.25%, down from 4.4%.
| Filer Type | Tax Rate |
|---|---|
| Single | 4.25% |
| Married Filing Jointly | 4.25% |
| Married Filing Separately | 4.25% |
| Heads of Household | 4.25% |
Colorado State tax deductions & credits
Some tax credits are also available for Colorado citizens. For example, the refundable Colorado Child Tax Credit (CTC) is a popular option that allows individuals to receive a credit for qualifying children depending on their adjusted gross income (AGI). If you qualify for the federal CTC, you likely qualify for the Colorado CTC. Other significant tax credits include the Alternative Fuel Credit and the Earned Income Tax Credit (EITC).