No. We do not charge any additional fees on chargebacks and refunds. The transaction fee still applies for a successful transaction that is eventually refunded.
Midtrans’ fee structure is simple, we charge you a fee for every successful transaction. There is no implementation or maintenance fee. For detailed pricing of all payment methods, please see here.
MDR or fee set by Bank Indonesia for regular type merchants is 0.7% per successful transaction. Or you can contact firstname.lastname@example.org, if you need confirmation regarding MDR or fees for special types of merchants.