The service fee is a variable amount added per trip. It reflects the difference between what the rider paid and your earnings excluding tips and tolls, and any other fees retained by us such as taxes and airport surcharges.
Service fee amounts vary per trip; they are not a set percentage.
You can always see the exact service fee associated with a particular trip in the "Trip Details" page on your Driver Dashboard. It will be listed under "Uber Receives."
The service fee helps us maintain and make continuous investments to enhance our technology. It covers improvements such as new app features that help you make the most of your time while online and driving with Uber.