Can my Instapayment Prepaid MasterCard® card ever carry a negative balance?
An authorization request for an amount that is greater than the account balance will be declined. However, occasionally, a merchant will not immediately send through an authorization request, meaning that while the money has been spent with a merchant, the account has not yet been debited. If another purchase is made before the authorization is sent through, there is a possibility that your Instapayment Prepaid MasterCard® card account could hold a negative balance. If that happens, you will be notified immediately by email and/or phone and/or postal mail and directed to add additional funds.