Quote Originally Posted by Per
Even though this looks easy I will propose the module here if it works as I intend!
Great! I would be very interested in a Invoice (Payment) module with an "Invoice Charge" (Order Total) as well.

The bit we may look at for a rewrite of moneyorder would be to add an invoice charge in Order Total.

Unless you want to handle invoicing yourself, Kreditor (Sweden) has a Zen module for invoicing in Sweden (may be worth looking at).

http://www.kreditor.se/documentation/

Their solution contains both a payment module and invoice charge (faktureringsavgift) part (in Order Total).