How can you detect whether a client is profitable or not?

When it comes to clientele, there is a general 20-80 rule, which means that a company has 80% of its profit from 20% of its top clients. Of course, even less lucrative clients can't just be rejected, though they do not bring as much profit and, paradoxically, they often require more effort than VIP customers. But where is the line between whether the client is profitable or not? We will try to give you an answer to this question in today's article.