Riders can now add a tip in their app in select cities. However, riders can continue to provide cash tips if they wish.
Where available, you must opt-in to accept tips added in the app. Once you've opted-in, your rider can add a tip in the app, through riders.uber.com, or from their emailed trip receipt.
Uber takes zero service fees on tips, and tips will be available for Instant Pay shortly after the trip is completed.