Delivery fees do not include the driver’s tip, though the app almost always offers a tipping option. Tips of 20% are standard, though many buyers add more for small orders, very large orders, deliveries during inclement weather or deliveries from restaurants that require more driving. Because of the high demand for delivery drivers, it could be difficult to find a driver willing to fulfill your order for one of the big delivery services if you set the tip to zero. Even if the delivery is free, you will need to factor in a driver tip to your total cost.