Colorado Tax Calculators.
Tax year 2026 income tax rates, brackets, and sales tax for Colorado. Returns for tax year 2026 are generally filed in 2027; source links and last-verified dates are shown below.Tax year 2026 means income earned during calendar year 2026; those returns are generally filed in 2027. State and local sales tax rates can change during the year, so confirm current rules before filing or remitting tax.
Income Tax
Colorado has a flat income tax rate of 4.4% on all taxable income. The state uses federal taxable income as the starting point, meaning Colorado conforms to federal standard deduction amounts.
| Taxable Income | Rate |
|---|---|
| All taxable income | 4.4% |
Sales Tax
Groceries are exempt from state sales tax. Prescription drugs are exempt.
Colorado's 4.4% flat rate is near the national average. Its low state sales tax rate of 2.9% is offset by relatively high local add-ons.
What is Colorado's income tax rate?
Colorado has a flat income tax rate of 4.4% applied to all taxable income. The state uses federal taxable income as its starting point.
Does Colorado tax groceries?
No, groceries are exempt from Colorado's 2.9% state sales tax. However, some local jurisdictions do tax groceries.
Does Colorado have a TABOR refund?
Yes, Colorado's Taxpayer's Bill of Rights (TABOR) limits government revenue growth. When revenue exceeds the limit, taxpayers receive refunds, which can be several hundred dollars per person.