Measure the cost of a bad fit

An unsuitable client costs more than the hours lost on the project. The work can occupy senior attention, delay better opportunities and leave the team less willing to pursue similar engagements. These effects are real even when they are difficult to price precisely.

Record the observable costs first: rework, unpaid scope, collection effort, missed deadlines and additional management time. Then describe opportunity costs as estimates rather than pretending they are exact losses.

Look for early signals. Were decision rights unclear? Was access restricted? Did the client reject reasonable responsibilities? Were you attracted by the logo or revenue despite those signals? A retrospective review is useful only if it changes future qualification.

Avoid labelling every demanding client a bad fit. Complex work can require substantial effort and still be worthwhile. The question is whether the engagement was designed and priced for that complexity and whether both parties could meet their responsibilities.

Some problems originate with the supplier. An unclear proposal, inexperienced team or unrealistic timeline should not be attributed to client behaviour. Separate the causes before changing targeting.

The practical benefit is a better definition of fit that includes delivery conditions and economics. Qualification then protects the quality of work rather than merely increasing the probability of a signature.