The exchange commission, also known as the trading fee or commission fee, is a fee charged by the exchange or broker for executing trades on the market. It is a cost that traders incur for accessing the financial markets and buying or selling assets, such as stocks, options, or futures contracts. The commission fee is usually expressed as a percentage of the trade value, and the amount can vary depending on the type of asset being traded, the size of the trade, and the broker's fee structure. Other brokers may charge a fixed commission fee per trade, while others may offer commission-free trading but may charge a minimum spread or markup on the bid-ask price. The commission fee is an important factor to consider when choosing a broker or platform, as it can have a significant impact on trading costs and overall profitability. Other brokers may also offer reduced or waived commission fees for high-volume or active traders, or as part of promotional offers or loyalty programs.