Colorado Sales Tax Calculator 2026
Work out the sales tax and total on any purchase in Colorado for the 2026 tax year.
How sales tax works in Colorado
Colorado (CO) applies a statewide base sales-tax rate of 2.9%. Most cities and counties add a local sales tax on top, so the combined rate you actually pay is usually higher than the state base — enter your local rate in the calculator above for an exact figure. Categories such as groceries, prescription drugs, and clothing are treated differently from state to state; this estimate assumes a fully taxable purchase.
What to know about Colorado sales tax
- Colorado applies a single flat income-tax rate to federal taxable income, making the state calculation unusually simple.
- The state sales-tax base is only 2.9% — the lowest non-zero state rate — but Colorado allows aggressive local add-ons, so combined rates are often high.
- Colorado has periodically issued taxpayer refunds under its TABOR revenue-limit rule.
Frequently Asked Questions
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Calculate →Disclaimer
This calculator provides estimates for informational and educational purposes only. SmartTaxCalcs does not provide tax advice. Your actual tax liability may differ based on your specific situation, recent law changes, and circumstances not modeled here (e.g., AMT, NIIT, special credits). We strongly recommend consulting a qualified tax professional (CPA, Enrolled Agent, or tax attorney) before filing or making financial decisions.
Data source: IRS Revenue Procedure / state Departments of Revenue. Last data update: May 19, 2026.