C.R.S. § 39-26-105.5
39-26-105.5. Remittance of sales taxes - electronic funds transfers
39-26-105.5. Remittance of sales taxes - electronic funds transfers. As specified in section 39-22-119.5, a vendor whose liability for state sales tax only for the previous calendar year was more than seventy-five thousand dollars shall use electronic funds transfers to remit all state and local sales taxes required to be remitted to the executive director of the department of revenue.