For most bookings you will pay for the rental online when you book. For some bookings you will pay part of the rental when you book and then difference when you collect the car at the local office.
Please remember that even if you have paid for the rental online, the main driver will still be required to have a credit card in their name on collection in order to pick up the car.
Please note that if your credit card has a PIN number associated to it, you will need the PIN number on collection.