The current rupiah withdrawal fee at Indodax is 10,000 rupiah for all withdrawal amounts. If when you make a rupiah withdrawal you are charged a withdrawal fee totaling 11,000 rupiah, this is an additional fee of 1,000 rupiah charged for SMS services. The fee is used for OTP verification via SMS sent to your main phone number. If you want to avoid the SMS fee, you can activate the Authenticator feature. By activating Authenticator, your rupiah withdrawal process will no longer have an SMS surcharge.