Abstract: A fare computer for a taxi, a freight carrier, or other use calculates the fare, display the fare as it accrues and displays visual representations of each charge contributing to the accrued fare. The fare computer is particularly suited for use in those localitites in which the taxi fare is based upon zones of travel, in accordance with a zone tariff schedule, rather than on total distance travelled. In a first mode, or ZONE TARIFF MODE, the fare computer calculates the fare from primary charge data, derived from the number of zones traversed in travelling from the origin of the trip to the destination, and secondary charge data, derived from such events as the handling of luggage or pets, extra stops, extra passengers or responding to a telephone request for passenger pick up. A display presents visual representations of the origin and destination zones and of each secondary charge contributing to the accrued fare, along with display of the total accrued fare.