We’ve added a new type of item you can create in ThunderPOS, Fees. Fees allow you to charge either a flat amount, a percentage or both, and apply to all other items on the transaction.
Fees must be added and edited through fee management, available within ThunderPOS by going to the store menu and then to the Fees option.
You can set up the fee and what percentage or flat amount it will charge here. Then, in order to add it to the invoice, you can either simply type in the item id as you would with any other item, or you can use the browse fees button that is available through the register designer
Percentage-based fees will change as you modify the invoice, as they are calculated off the price of all non-fee items.