22 Surcharge
From TrueERP wiki
Do you know how to apply a Surcharge/Credit Card Transaction fee against a payment?
Select Payment Module, Select Customer Payment, Fill in Customer, Payment Date, Fill in Payment Method (Credit Card/Mastercard/Bancard et, Fill in Reference No, Go to Apply Column and Tick on Apply, Select Surcharge Button, Payment Surchage card will appear, Enter the percentage surchage to use for designated credit card (3.5)% Hit Save, Amount will automatically calculate or add up the surchage fee from the credit cards. Tick apply, Fill in Notes and Save to finish transaction.