How do I know if a charge is taxable and what is my sales tax rate? May 08, 2020 21:10 Updated Consult your dealership's Controller or finance contact to determine taxability and state requirements. Related articles What is a Fuel Charge, a Fuel Convenience Fee, and a Fuel Charge Allowance? How do I add taxes and custom fees to a Vehicle Group (Beta)? What is a vehicle status and how do I update it? How do I update Additional Group Settings for Vehicle Groups (Beta)? How do I use the Vehicles Not Under Contract section in Dealerware Web?