Interac e-Transfer transactions can only be cancelled if they haven't already been deposited. Please note that there may be a fee from your financial institution to cancel the transaction. To cancel an Interac e-Transfer transaction, go into your banks' online banking / mobile banking application and locate the pending transfer in the Interac e-Transfer transaction history. Exact instructions for cancelling a transfer will vary by participating financial institution. If you have any questions about cancelling your transfer, please contact your financial institution directly.