1. managers are the people in charge of employees and the facilities they work for.
2. managers require accounting information to prepare budgets that specify how organization plans to use its limited resources. managers also need accounting information to monitor the performance of the organization and to make business decisions.
3. to make effective planning , as well to carry out supervision, as well as to make appropriate economic decisions by management.   
Managers must be able to understand high degree operating leverage information. When the manager determines the cost of a product, he must know what components must be included in the calculation, because if the manager is wrong when determining the cost of production, the company may lose money because the costs incurred are not proportional to the income earned.