Webestimated trip earnings do not include tips; Riders can tip up to 30 days after the trip is completed; Any cash gratuity offered by a rider is voluntary, and if a rider wishes to tip. Webwhile uber does not require riders to offer drivers a cash tip, you are welcome to do so. Should you choose to tip, your driver is welcome to accept or decline. Webafter a trip has ended, you have 30 days to add a tip in the app, on riders. uber. com, and from your emailed…