Sales tax calculator · 2026
The Colorado (CO) state sales tax rate is 2.90%. Local jurisdictions can add up to 8.30%, making the maximum combined rate 11.20%. The exact rate depends on the city or county of purchase. Low state rate but local taxes add significantly — Denver metro combines city, county, RTD, and special district taxes
State rate: 2.9% · max combined: 11.20%
CO rate used
2.90%
Sales tax
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Total price
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Sales tax is a consumption tax imposed on the sale of goods and certain services. In Colorado, the state rate is 2.90%. Counties and cities may add additional local sales taxes of up to 8.30%, making the total rate in some areas as high as 11.20%.
Sales Tax Formula
Tax Amount = Purchase Price × (2.9% ÷ 100)
Total Price = Purchase Price + Tax Amount
With local tax: Total Price = Purchase Price × (1 + 0.11200000000000002)
Example Calculation
A $100 purchase in Colorado:
Sales tax = $100 × 2.9% = $2.90
Total = $102.90
Colorado has the lowest state rate in the nation (2.90%) but cities and counties layer heavily. Rates in Denver metro reach 8–9%. Always verify with the CO Dept. of Revenue sales tax lookup tool before filing.
| City | Combined rate | Notes |
|---|---|---|
| Denver | 8.81% | 2.9% state + 4.81% city/county/RTD/SCFD |
| Aurora | 8.50% | 2.9% state + 5.6% Aurora city (straddles 3 counties) |
| Colorado Springs | 8.20% | 2.9% state + 5.3% El Paso County + city |
| Boulder | 9.045% | 2.9% state + 6.145% city/county/RTD/special districts |
| Fort Collins | 7.55% | 2.9% state + 4.65% Larimer County + city |
| Lakewood | 7.75% | 2.9% state + 4.85% Jefferson County + city |
| Thornton | 9.00% | 2.9% state + 6.1% Adams County + city + RTD |
| Arvada | 8.96% | 2.9% state + 6.06% Jefferson County + city + RTD |
| Westminster | 8.65% | 2.9% state + 5.75% Jefferson/Adams County + city |
| Pueblo | 7.60% | 2.9% state + 4.7% Pueblo County + city |
| Centennial | 7.25% | 2.9% state + 4.35% Arapahoe County + city |
| Highlands Ranch | 6.90% | 2.9% state + 4.0% Douglas County (unincorporated) |
| Loveland | 6.70% | 2.9% state + 3.8% Larimer County + city |
| Greeley | 7.01% | 2.9% state + 4.11% Weld County + city |
| Castle Rock | 7.50% | 2.9% state + 4.6% Douglas County + city |
Rates as of 2026. Always verify with the Colorado Department of Revenue before filing.
Most tangible personal property is subject to sales tax in Colorado. Services may or may not be taxable — Colorado, like most states, exempts most services.Common exemptions and special rates include groceries, prescription drugs, and clothing (rules vary by state).
Out-of-state sellers may need to collect Colorado sales tax if they have economic nexus in the state. Most states now require remote sellers with over $100,000 in sales or 200 transactions to register and collect sales tax (South Dakota v. Wayfair, 2018). If you sell products to CO customers, check whether you need to register with the Colorado Department of Revenue.
The CO state sales tax rate is 2.90% as of 2026. Local jurisdictions may add up to 8.30%, so your actual rate depends on where the purchase is made. The combined maximum rate in Colorado is 11.20%.
If you have physical presence (store, office, warehouse) in Colorado, you must collect sales tax. If you sell online to CO customers and exceed economic nexus thresholds (typically $100K in sales or 200 transactions), you must also collect. Register with the Colorado Department of Revenue for a sales tax permit.
Colorado generally does not tax services, though there are exceptions such as. Examples include telecommunications, cable TV, and fabricated product labor. Check with a tax professional for your specific service.
Multiply the purchase price by 2.9% (state rate). For example, a $100 purchase = $2.90 tax, total $102.90. In Colorado, you may need to add local taxes depending on the city or county of sale. Use our calculator above for any amount.
Colorado has the lowest state rate in the nation (2.90%) but cities and counties layer heavily. Rates in Denver metro reach 8–9%. Always verify with the CO Dept. of Revenue sales tax lookup tool before filing.