Systems and methods for determining a trade fee charged by a trading venue to a market participant, or a rebate credited by a trading venue to a market participant are disclosed. The method may include a computer accessing and storing one or more order information parameters in memory, as well as accessing and storing one or more of market characteristics in memory. The method may further include calculating a trade fee or rebate that is based on at least one of the order information parameters and at least one of the market characteristics stored in memory. A system may include a memory containing instructions for calculating a trade fee or rebate and a processor in communication with the memory, the processor configured to execute the instructions according to the method set out above.