The invention relates to systems and methods that allocate different types of commissions to participants based on at least one factor contributing to the liquidity to the market in which an item trades. The commission may accordingly depend on the order in which trading commands are received from different participants and/or the sides the participants are on. The systems and methods receive trade commands from different participants on the item, match these trade commands, determine a commission or reward based on the added liquidity and allocate the commission or reward to certain participants.