In modern conditions very few enterprises do marketing service defining. All of them still work for production, but not for its sale. From here and problems: overstocking of warehouses, astronomical debts etc. Therefore sale and marketing have to become primary in relation to production.
To solve these and a set of other problems, were created the mechanism of management of expenses and a dynamic method of calculation of prime cost. The basic principle is a making decisions on efficiency of production only relatively of direct costs.
Basis of a dynamic method of calculation of prime cost is classification of prime cost by stages of production and commercial cycles. All process on production can be divided into supply, production and realization.