When you install the Summon app, you enter in credit or debit card information, and all fares and tips are paid off of this card. We only charge you for a ride after you have been dropped off at your final destination. You can also add multiple cards to your account.
After every Summon ride, you have 24 hours to adjust a tip for your last driver within the app. If you don't do anything, the fare will be automatically charged to your card on file. Rides with personal drivers do not include a tip. Rides with taxi drivers will include a 15% tip. The amount charged will be shown within your app until you confirm payment.