What factors determine the reasonableness of a fee?

Legal fees depend on several factors, including the amount of time spent on your problem; the ability, experience, and reputation of the lawyer; the novelty and difficulty of the case; the results obtained; and the costs involved. There will be other factors, such as the attorney's general expenses (rent, utilities, office equipment, computers, etc.) When a client's challenge raises a requirement to determine a reasonable attorney's fee, the burden of establishing entitlement to the amount of the fee charged rests with the lawyer.