CTS-FuelTax is an application for processing tax returns, tax liability (including penalty, interest, fees and credits), and tax payment cut-off dates for various fuel types such as special fuels, aircraft, and dyed diesel fuels. It reconciles buyer and seller reports, produces discrepancy reports, and has functionality for viewing, printing, and editing.

CTS-FuelTax associates the correct tax rate code with the correct tax period through a tax rate table, and can post payments, waive penalties and interest, as well as apply and transfer credits to accounts as required.