The Colorado (CO) state sales tax rate is currently 2.9%, ranking 45th-highest in the U.S. Depending on local municipalities, the total tax rate can be as high as 11.2%. The average local rate is 4.62%. The average combined tax rate is 7.52%, ranking 16th in the US.

Local-level tax rates in the state of Colorado are quite complex compared to other states. Colorado sales tax can be levied at the city/county/school/transportation and SPD (special purpose district) levels.

In some of the cities and counties, local taxes apply to both intra-state and inter-state transactions.

In Colorado, groceries and prescription drugs are exempt from the sales tax.