Variable amortization The amortization is calculated from a number of activity base. Amortization at constant rate The amortization is calculated according to the life cycle of the fixed asset. Amortization after basic allowance The amortization is calculated after a basic allowance. Amortization with not budgeted constant cost The amortization is adjusted according to the costs of real maintenance of the fixed asset. Amortization with budgeted constant cost The amortization is adjusted according to the costs of budgeted maintenance of the fixed asset. Amortization with unit budgeted constant cost The amortization is adjusted according to the costs of budgeted maintenance of the fixed asset and activity base. Softy amortization The amortization is calculated according to the life cycle of the fixed asset and the order of the years. Exponential amortization The amortization is calculated according to a constant rate applied to a tapering value. Amortization at lessening rate The amortization is calculated according to the life cycle of the fixed asset and a previsional lessening rate. Normal progressive amortization The amortization is calculated according to the life cycle of the fixed asset and the order of the years. Amortization in arithmetic progression The amortization is calculated according to the time of use of the fixed asset and a constant amount. Amortization in geometric progression The amortization is calculated according to the time of use of the fixed asset and the multiplier coefficient. Financial amortization The amortization is calculated according to the time of use of the fixed asset and the capitalization rate. Amortization at increasing rate The amortization is calculated according to the life cycle of the fixed asset and a previsional increasing rate. Amortization with logistic progression The amortization is calculated according to the time of use of the fixed asset (curve of Gauss). Accelerated amortization (Acquired and made fixed asset between 4-12-2008 and 31-12-2009) The amortization is calculated according to the French regulations. Accelerated amortization (Acquired and made fixed asset since 1-1-2010) The amortization is calculated according to the French regulations.