Why it is important for the managers to understand macroeconomics?

Business managers need to know about macroeconomics because firms operate in and are influenced by the behavior of the overall economy. Factors such as interest rates, employment, inflation, money supply, etc., affect the business environment and financial conditions in general, so firms must address macroeconomic issues in their planning and management strategy. Macroeconomic forecasts and strategies are more important for large firms than for small businesses.