C.R.S. § 24-35-101

(1) There is hereby created the department of revenue, the functions of which are the collection of the following: (a) Taxes levied and the license fees imposed by the provisions of articles 22 and 26 to 29 of title 39, C.R.S., and section 21 of article X of the state constitution, and the administration and enforcement of said provisions; (b) Taxes levied by the provisions of articles 23.5 and 25 of title 39, C.R.S.; (c) Taxes levied and the license fees imposed by the provisions of title 42, part 2 of article 5 of title 43 , and part 1 of article 20 of title 44 , and the administration and enforcement of these provisions; (d) Taxes levied and the license fees imposed by the provisions of part 5 of article 3 and article 4 of title 44 , and the administration and enforcement of said provisions; (e) Repealed. (f) Taxes, fees, and other revenues, the payment of which is required by law, which the department may be directed by law, rule, or agreement to administer, collect, or enforce.