Colorado Sales Tax Guide for Small Businesses
Everything you need to know about sales tax in Colorado — rates, deadlines, exemptions, and how to stay compliant without the headache.
Last updated March 2026
Quick Facts
Colorado Sales Tax Rates
Colorado's state sales tax rate is 2.90%. Cities and counties can add local taxes on top. The average combined rate across Colorado is 7.79%.
The highest combined rate in the state can reach up to 11.25% in some jurisdictions.
Home Rule State
Colorado is a home rule state. Over 70 home rule cities (including Denver, Aurora, and Colorado Springs) administer their own sales tax separately. You must register and file with each home rule city where you have sales.
Filing Deadlines & Frequency
Filing Frequency
Monthly, Quarterly, or Annual — assigned by CO DOR based on tax liability
Due Dates
20th of the month after the reporting period
File Online
Colorado Department of Revenue — Revenue Online: https://tax.colorado.gov/sales-use-tax
What's Taxable for Restaurants & Food Businesses
Vendor Discount
Colorado's vendor fee (3.33% of state tax) was eliminated effective January 1, 2026.
Penalties for Late Filing
Late Filing Penalty
10% of tax due plus possible 10% negligence penalty
Interest
0.5% per month on unpaid tax
Miss a deadline and Coloradostarts charging penalties and interest immediately. That adds up fast on a busy restaurant's tax bill.
TaxAside's On-Time Guarantee covers up to $5,000 in penalties if we ever file late.
Calculate Your Colorado Sales Tax
How TaxAside Helps in Colorado
- We handle Colorado's complex local filing requirements so you don't have to.
- Daily set-asides mean no tax-day surprises. We pull, calculate, set aside, and file — you do nothing.
- On-Time Guarantee covers up to $5,000 in penalties if we're ever late filing your Colorado return.
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Additional Notes
- • Vendor fee (3.33% of state tax) eliminated January 1, 2026
- • Home rule cities require separate registration and filing
- • Colorado has one of the most complex local tax structures in the country