DoorDash makes it easy to add a tip before you place your order. DoorDash You can add a tip on DoorDash before you finish your order, and change the tip once your food is delivered. To add a tip on Doordash, use the "Dasher Tip" toolbar on the checkout page. Tips can be adjusted after delivery, but you have to file a claim with customer support, and there's no guarantee that it'll be accepted.