I want to know about the fees charged by management consulting companies.

Generally, the management consulting companies I know are divided into three parts when talking about contracts. The first part is the advance payment, accounting for about 20-50% of the total contract amount, and the second part is the execution fee. Different companies can raise funds in different ways. Some companies gradually collect fees according to the implementer's day, while others collect fees by stages. The third part is travel expenses. When talking about a contract, it should be clear which party pays. This is the general situation, of course, the specific negotiations will be held in the initial stage.