Some transfers between accounts incur a fee. At the moment when creating a transfer transaction, it's 100% transfer of value from one account to the other.

It would be good to have a field to input the fee for the transaction and have transaction fees as data to reference later (ie for tax return or just seeing how much money is being spent in transaction fees) and of course to keep account totals correct.

Currently the only way to emulate this is to create the transfer, then edit the amount of the outgoing transfer to add the fee. Then the grouped transaction correctly shows a negative value from the fee incurred.