The introduction of modern technologies for growing perennial grasses in feed production has caused the need to improve the methodology for allocating costs by product type. The article describes the current method of distributing the costs of cultivation. The problems of distribution of these costs are revealed. It is proposed to open two analytical accounts for the sowing of a grass mixture of perennial uncovered grasses for a more accurate distribution of costs in the future, in the year of sowing: «The cost of tillage and sowing of perennial grasses », «The cost of caring for crops and harvesting perennial grasses». A new method of cost allocation by types of perennial herb products has been developed.