When you board a GO bus, tap your card onto to the PRESTO fare payment device near the driver. The machine will validate your card, record the starting point of your trip and deduct the fare to the next zone on the route. When you reach your destination, tap your card off the device as you exit the bus. The PRESTO system debits or credits your card for the balance of the trip.
The system automatically applies transfer credits when you transfer between GO buses, or from GO buses to GO trains or from GO trains to GO buses.
You can learn more about using PRESTO on GO buses here.
You can learn more about GO’s special offer for passengers who switch from 10-ride or monthly passes to PRESTO here.