Fares on the network are based on a zone tariff set between two specified points by GO Transit, and the type of passenger using the ticket. Passenger categories exist for adults, students, seniors and groups. Tickets are also sold for single trip, or passes for one day or one month. Tickets can be used on a GO train, bus, or a combination of both. They can be purchased at train stations, bus terminals, ticket agencies, or on GO buses. As of March 9, 2019, passengers under the age of 12 can ride GO Transit for free.