Find more information about your Colorado income taxes below. Check your filing status and refund for any state.
Where’s my Colorado State tax refund?
Check the status of your refund using these resources:
State: Colorado
Refund Status Website: State of Colorado Revenue Online
Refund Status Phone Support: 1-303-238-7378
Hours: Monday through Friday, 8 a.m. to 4:30 p.m.
Online Contact Form: Colorado Department of Revenue Taxation Division
2023 State Tax Filing Deadline: April 15, 2024
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 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.
| Filer Type | Tax Rate |
|---|---|
| Single | 4.40% |
| Married Filing Jointly | 4.40% |
| Married Filing Separately | 4.40% |
| Heads of Household | 4.40% |
The flat rate of 4.4% in Colorado has remained unchanged since 2022.
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).