Note: This feature is available from 21.2 onwards

You may check the following pages if you want to know more about the By Percentage and None options:

How to set up Credit Card Processing

Notes on Credit Card Convenience Fee setup

By Percentage:

1. Go to System Manager | Activities | Company Configuration
2. Click the System Manager menu
3. Scroll down to the Credit Card Processing section
4. On Credit Card Processing section | Credit Card Convenience Fee field, select Percentage.
5. Enter the percentage value corresponding to the listed card type/s with convenience fee (Values displayed are examples only).
   • Visa
   • Mastercard
   • American Express
   • Discover
   • Diners Club
   • China Union Pay
   • Image Added
6. Enter the Fee General Ledger Account field value.
7. Enter the Payments Location field value.
8. Click the Save button. 

None:

...

1. Go to System Manager | Activities | Company Configuration.
2. Click the System Manager menu.
3. Scroll down to the Credit Card Processing section.
4. On Credit Card Processing | Credit Card Convenience Fee field, select None. This will disable both the Percentage and Fixed Amount columns.Image Added
5. Click the Save button.