Once you have registered for GST, GST applies to every dollar you earn as a ride-sharing driver.
GST is charged on the full fare passengers pay you for ride-sharing services. Usually, the digital platform you're using calculates the full fare - including GST.
As a GST registered ride-sharing driver, you need to file GST returns and include the GST you have collected.
You can also claim any GST included in the price of goods and services you buy for the ride-sharing services you provide.