Colorado's 2.9% state rate is the third-lowest in the US, but don't be fooled — home rule cities like Denver (8.81%) and Boulder (9.85%) stack their own taxes on top, making Colorado's local rates among the highest nationally. Unusually, home rule cities collect their own tax directly, meaning businesses must file separate returns in each city.
Colorado sales tax overview
| Component | 2026 Rate |
|---|---|
| State sales tax | 2.90% |
| Avg local add-on | 4.89% |
| Avg combined | 7.79% |
| Maximum combined | 11.90% |
Note: Colorado has one of the lowest state rates (2.9%) but among the highest avg local rates. Home rule cities collect their own tax separately.
Colorado sales tax by city
Combined state + local sales tax rates for major cities in Colorado:
| City | Combined Rate |
|---|---|
| Denver | 8.81% |
| Colorado Springs | 8.20% |
| Aurora | 8.00% |
| Boulder | 9.85% |
What's exempt in Colorado
Groceries
Exempt from Colorado state sales tax. Local jurisdictions may still tax.
Clothing & footwear
Taxed at standard rate.
Prescription drugs
Exempt from sales tax (typical across most states).
How Colorado sales tax is calculated
Sales tax in Colorado is calculated by multiplying the pre-tax purchase price by the applicable combined rate. The formula is simple:
Sales Tax = Purchase Price × 7.79% (avg combined)
Total = Purchase Price + Sales Tax
The exact rate depends on where the purchase occurs — the state base rate (2.90%) plus any local city or county add-ons. Colorado allows local jurisdictions to add their own taxes, so the rate varies by location.
Quick calculation examples at average rate 7.79%:
$100 item
$7.79 tax
$107.79 total
$250 item
$19.47 tax
$269.48 total
$500 item
$38.95 tax
$538.95 total
$1,000 item
$77.90 tax
$1077.90 total
Additional tax-free items in Colorado
Beyond the standard exemptions, Colorado also provides sales tax relief on these categories:
Exemptions may have conditions. Always verify with the Colorado Department of Revenue for complete rules.
Colorado sales tax in context: rates, history, and neighbors
Colorado's 2.9% state sales tax is the third-lowest in the US (only Hawaii at 4% GET and Oregon at 0% are lower) — but Colorado has 271 home-rule municipalities with broad authority to set their own rates, creating combined rates that average 7.79% and can exceed 11% in some jurisdictions. Denver's combined rate is 8.81%; Boulder 9.85%; Colorado Springs 8.20%; Fort Collins 7.55%; Aurora 8.0%. Colorado's distinctive Retail Delivery Fee ($0.29 per delivery) was added in 2022 and applies to every retail order delivered by vehicle to a Colorado address that contains at least one taxable item. Compared to neighbors: New Mexico (~7.6%), Utah (~7.34%), Wyoming (~5.44%), Nebraska (~6.95%), Kansas (~8.73%), Arizona (~8.37%) — Colorado's average sits in the middle but specific cities like Boulder rank high.
Online shopping & Colorado sales tax
Colorado enacted economic nexus in 2019 — remote sellers with $100,000+ in Colorado sales must collect state and applicable local taxes. Colorado introduced a unique 'Retail Delivery Fee' ($0.29 per retail delivery to a Colorado address) in 2022, adding a small surcharge on all shipped taxable purchases.
Use Tax reminder: If you purchase taxable goods online from a seller who does NOT collect Colorado sales tax, you technically owe Use Tax — the same rate as sales tax, reportable on your Colorado state tax return. Use Tax enforcement on consumers is rare but the obligation exists for significant purchases.
How much Colorado sales tax on common purchases?
Using Colorado's average combined rate of 7.79%:
| Purchase | Price | Sales Tax | Total |
|---|---|---|---|
| Grocery cart | $150 | Exempt | $150.00 |
| Clothing / shoes | $120 | $9.35 | $129.35 |
| Prescription drug | $80 | Exempt | $80.00 |
| Smartphone | $999 | $77.82 | $1076.82 |
| Laptop / tablet | $1,299 | $101.19 | $1400.19 |
| New car ($35,000) | $35,000 | $2726.50 | $37726.50 |
| Home appliance | $1,500 | $116.85 | $1616.85 |
| Restaurant meal | $60 | $4.67 | $64.67 |
Based on Colorado's average combined rate of 7.79%. Exact tax depends on city/county. Use our calculator above for specific locations and amounts.
Collecting sales tax in Colorado: business guide
If you sell goods or taxable services to Colorado customers, here's what you need to know:
- Registration: Register for a Colorado sales tax permit/license through the Colorado Department of Revenue before making your first taxable sale. Most states process registrations online within a few days.
- Economic nexus (online sellers): If you have $100,000+ in Colorado annual sales or 200+ transactions, you must collect Colorado sales tax even without a physical presence in the state — per South Dakota v. Wayfair (2018). You must collect both state (2.90%) and applicable local rates.
- Destination vs origin sourcing: Colorado uses destination-based sourcing for most sales — the tax rate where the buyer receives the goods applies. Always use the customer's delivery address to determine the rate.
- Filing frequency: Frequency depends on your Colorado sales volume — monthly for high-volume sellers, quarterly or annually for low-volume sellers. Check with the Colorado Department of Revenue for your specific filing schedule.
- Marketplace sales: If you sell through Amazon, Etsy, eBay, or similar platforms, the marketplace is required to collect and remit Colorado sales tax on your behalf — you don't need to collect it separately on marketplace transactions.
- Resale certificates: Businesses purchasing goods for resale can provide a Colorado resale certificate to suppliers to avoid paying sales tax on wholesale purchases. Keep copies of all resale certificates for audits.
Streamlined Sales Tax (SST): Colorado is not currently a member of the Streamlined Sales Tax (SST) Agreement — check Colorado Department of Revenue for filing specifics.
Colorado-specific business compliance details
Colorado is one of the most complex sales tax states for businesses. State-administered jurisdictions file through the Colorado Department of Revenue's Revenue Online portal. But 90+ home-rule cities (Denver, Lakewood, Aurora, Centennial, Boulder, etc.) collect their own taxes and require separate licenses and filings. A statewide retailer may need to register and file in 50+ separate jurisdictions. Out-of-state sellers with $100,000+ in Colorado sales must collect (economic nexus, since 2019). The Sales and Use Tax Simplification System (SUTS) launched in 2020 to consolidate filing for participating cities — but adoption is uneven. Marketplace facilitators collect Colorado tax. The Retail Delivery Fee ($0.29) requires separate compliance. Colorado businesses typically use software (Avalara, TaxJar, Vertex) to navigate the complexity.
Colorado sales tax frequently asked questions
Why does Colorado have such low state sales tax but high combined rates?
Colorado's 2.9% state rate is one of the lowest in the country, but Colorado's 271 home rule municipalities have exceptionally broad authority to set their own tax rates. Denver adds 4.81% on top of the state rate, Boulder adds 5.86%+, and even smaller cities often add 3%+. The result is a large gap between the low state base and the high combined rate consumers actually pay.
What is Colorado's Retail Delivery Fee?
Colorado charges a $0.29 Retail Delivery Fee on every retail purchase delivered by vehicle to a Colorado address if the order includes at least one taxable item. This fee applies to online orders and any delivered goods — it appears as a separate line item on receipts. The fee funds state transportation projects and applies regardless of order size.
How do I know which sales tax rate applies to my Colorado purchase?
Colorado's sales tax complexity is notable — you need the exact delivery address to determine the correct rate. Use the Colorado Department of Revenue's online GeoCode tool at colorado.gov. For home rule cities like Denver, Lakewood, and Aurora, additional city-specific taxes apply and those cities collect their own tax. For unincorporated county areas, only the state + county rates apply.
Colorado city paycheck calculators
If you live or work in a Colorado city, see our city-specific paycheck calculators for take-home pay including any local income tax, plus local employer and cost-of-living context: