Online brokers have a wide range of business models. Many of them charge commissions on trades made through their platform. However, there are other online brokers such as Wealthsimple Trade, which are known for commission-free trading. As such, while Wealthsimple Trade and the other zero-commision brokers in Canada do not make any money from commissions, they have other revenue streams, including foreign currency conversion fees and interests charged on short-selling and margins.