Magediary

Is it possible to exclude discount, shipping or tax amount in the fees?

Yes, if the fee type is the percentage because for the fixed fee type it is not required to calculate.
We can specify either you want to include or exclude discount, shipping or tax amount in the fees or not from the following configurations under the Additional Conditions tab.
  1. Include discount in subtotal
  2. Include shipping in subtotal
  3. Include tax in subtotal