16. The lump sum method involves the payment of a lump sum negotiated between the client and the firm engaged. The sum is estimated on the basis of the number of hours considered necessary for carrying out the engagement, on the basis of the rates provided for the hourly method, or on the basis of a percentage of the cost of the work or the budget forecast.
D. 1235-87 (French only), a. 16; O.C. 195-2023.