You will need a Margin account in order to use an attached FX Hedge order. A Cash account cannot use a FX Hedge attached order because it takes IBKR a fraction of a second to see how much negative cash is in the account after the non-base currency stock order executes. Even though it would only be a short amount of time that the Cash account would be holding a negative cash balance, a loan to the account is not allowed under any circumstances. In a Cash account you will need to first execute a FX currency conversion order and then place an order for a contract denominated in a foreign currency.
Additional Information
- FX Hedge order, please visit our Users Guide.