When are treatment payments due? Non-refundable deposits are required upon booking an appointment. The remaining balance due is payable on, or before, the day of your appointment. We accept most major credit & debit cards, cash or bank/building society cheque with a cheque guarantee card. (Apologies, but we don’t accept American Express.) Advance payments can also be made via bank transfer or cheque. If you wish to pay by either of these methods please let us know prior to your appointment.