Investment commissions are fees charged by financial professionals or firms for managing investments on behalf of clients. These commissions can vary based on the type of service provided, such as buying or selling securities, and may be a flat fee or a percentage of the total investment amount. Investors should be aware of these commissions, as they can impact overall returns. Understanding the structure of investment commissions helps clients make informed decisions about their financial strategies and choose the right financial advisor or investment firm for their needs.