A fee is the price one pays as remuneration for services, especially the honorarium paid to a doctor, lawyer, consultant, or other member of a learned profession. Fees usually allow for overhead, wages, costs, and markup.
Traditionally, professionals in Great Britain received a fee in contradistinction to a payment, salary, or wage, and would often use guineas rather than pounds as units of account.
A contingent fee is an attorney's fee which is reduced or not charged at all if the court case is lost by the attorney.