Deriving transaction ECN, a trader or extra income (fees charged – Rebate), or has written-off fee for the execution of the transaction. Rebate credited for creating additional liquidity when a trader puts their bids and offera (pending Limit orders) in the ECN, the cost depends on the specific ECN. In the performance of a market order ECN (Market order, Stop order or Marketable Limit order) for the reduction of liquidity in the ECN is deducted Fee.