How can I add a discount for the entire purchase? Gianluca Augustin December 27, 2018 12:45 Updated If you would like to enter a discount for the entire purchase, you can do this on the payment screen. Related articles How can I add an article discount? How can I connect the cash register with the receipt printer? What is the advantage of depositing my credit and debit cards in KLARA? Processing and creating QR code invoices KLARA pay TWINT Integration