Denver Sales Tax Rate — Economic Context & Calculation
Economic Context. Denver has the 2nd largest aerospace economy in the US (behind only Seattle).
The combined sales tax rate in Denver is 9.150%, composed of the Colorado state rate of 2.900% plus a local portion of 6.250%.
Denver is known for Mile High City (5, 280 ft), Rocky Mountain gateway, and craft beer capital. Businesses operating in these sectors should verify product-specific taxability with City and County of Denver.
Key industries driving Denver's economy include Aerospace & Defense, Telecommunications, Technology, Healthcare — each may have distinct sales tax treatment under Colorado law.
Visitor note: Red Rocks Amphitheatre, Denver Union Station, LoDo (Lower Downtown), Denver Art Museum, Coors Field, 16th Street Mall, Rocky Mountain National Park (1.
The formula to calculate sales tax for any purchase:
Sales Tax Amount = Taxable Price × Combined Tax Rate
For a $150.00 purchase in Denver: tax is $13.72 ($150.00 × 0.09150), total is $163.72.
Local Tax Authority & Special Rules in Denver
Sales tax in Denver is administered locally by City and County of Denver. Denver's 8.
Special tax rules specific to Denver:
- Denver is a consolidated city-county. The 8.81% combined rate includes the low 2.9% state rate plus Denver's local add-ons. RTD (transit) and special district taxes contribute to the total.
Denver-specific: Denver's aerospace industry (Lockheed Martin, ULA, Sierra Space) and cannabis industry both create unique tax considerations that don't apply in most US cities.
| Taxing Authority | City and County of Denver |
| State Sourcing Model | Destination Sourcing. Combined rates are determined by the delivery address, subject to home-rule rules. |
| Economic Nexus Threshold | $100,000 in gross sales, revenue-only with no transaction test, measured over the current or previous calendar year. |
| Filing Frequency | Monthly, Quarterly, or Annually |
| Standard Due Date | Typically on or before the 20th of the month following the filing period |
Denver County's consolidated city-county structure means its add-ons include county, city, and RTD transit taxes within a single rate.
Sales Tax vs. Use Tax for Denver Businesses & Consumers
While sales tax is collected by registered vendors at the point of sale, use tax is a self-assessed tax that applies when taxable goods are purchased from a vendor who did not collect sales tax. The rates for both are identical: 9.150%.
If you purchase equipment, software, or supplies from out-of-state merchants and no tax was charged, you are legally obligated to report and pay use tax to Colorado Department of Revenue. Use tax audits are common — failure to accrue on untaxed invoices is a frequent audit finding.
Aerospace & Defense and Telecommunications and Technology and Healthcare companies operating in Denver should maintain rigorous use tax accrual procedures, especially for equipment and specialized software purchased from out-of-state vendors.
Sales Tax Registration & Permits for Denver Businesses
Businesses with physical presence or economic nexus in Colorado must register with Colorado Department of Revenue before collecting tax.
Denver's position as a hub for Mile High City (5, 280 ft), Rocky Mountain gateway means remote sellers shipping to this city should proactively monitor Colorado's nexus thresholds.
For full registration, filing, exemption certificate, and audit guidance, see the Colorado sales tax guide.
Resale Certificates & Tax Record-Keeping in Denver
Businesses in Denver must maintain resale certificates and transaction records to comply with Colorado tax audits. If you sell wholesale, obtain a valid resale certificate from the buyer.
Given the concentration of aerospace & defense businesses in Denver, auditors will scrutinize exemption documentation and out-of-state vendor invoices closely. Keep all records for at least the state-mandated retention period.
For detailed guidance, see the Colorado sales tax page.
