https://ndcdyn.interactivebrokers.com/sso/Login?action=VIEW_TRANS_HISTORY

You can cancel transactions with a “Pending” status.

  • Log in to Client Portal/Account Management
  • Click Transfer & Pay followed by Transaction History
  • Click anywhere on the row of the “Pending” transaction you want to cancel. Details for the transaction appear in a popup window
  • Click CANCEL REQUEST at the bottom of the window
  • Click YES to confirm the cancellation
  • The status of the transaction changes to “Cancelled”.

Please note, certain requests, such as those that have been already initiated, cannot be cancelled. See also: How to cancel/recall a wire withdrawal that has been processed?