There is no fees charged by XM when depositing via Sofort banking system.

Although Sofort banking will charge “0.9 % + 0.25 euro” for each transfer. (Feb/2018)

You may need to cover that charge.

For exchanging currencies, XM converts currencies without any charges.

For more details or for the list of available funding methods, please visit XM Official Website and login to the Client Portal.