Accounting as an art and skill of recording business events is the basis for management to make future business decisions. Accounting is a "business language" that needs to be mastered in order to manage a business entity. The main characteristics of information are reliability, accuracy, age and comparability. As such, accounting information is an indispensable source of business and significantly affects the outcome of a decision. Managers bear the greatest responsibility in the company and therefore decision-making is the most important management activity. For decisions to be made correctly, it is necessary to ensure a quality accounting information system. The accounting information system is a subsystem of the overall information system in business, and most of the information needed for business decision-making comes from this subsystem. Knowledge and information are a powerful and necessary source without which there is no progress, so today it is unthinkable to run a company without a suitable information base. Accounting information intended for external users is usually synthesized and aggregated, while accounting information intended for internal users is presented in more detail and has analytical features. Management accounting is most often defined as the part of accounting whose primary function is to provide information to customers within the company. Planning and control activities are interdependent processes and are closely related to management accounting. When planning, the primary goal is to determine the company's goals and determine the ways to meet them, and then by selecting the most favorable methods and procedures, the set goals are quantified. When it comes to control, the most important activity is the comparison of planned goals with the achieved results as well as the identification and analysis of deviations. Audit and analysis of financial statements are the most important control procedures. All business decision-making processes depend on the quality and relevance of financial statements.