can I create a report in custom reports, that shows all the bank transfer and its bank fees in a separate column?
How is your bank fee recorded?
in the payment, with the transferred amount, as an expense
I think it should be possible when you use Advanced Query on Payments - Lines screen.
But there is no “Total Payment” column on that screen. Eventually it will be added. That would be needed to create report like that.
I didn’t understand sorry, could you please tell me step by step on how to do it?
I think this custom report will be able to filter Payments & Fees of that specific supplier as per code, you just have to know which account code is not related.
@lubos
I dont know what this report is gonna do. The OP wants to see Payments alongside the bank fee as a column which is currently not possible.
I dont think this will give you result on same line. It will be two different lines one for bank fee other for total amount which is possible. Also you have to exclude accounts in which there are always chances of error.
If you know your chart of accounts you will know your balance sheet plus P&L report and where to record revenue/cost & expenses, therefore chance of errors will be zero.

