Modern economy, the interest rate as the price of money, not only restricted by many factors in the economic and social, and changes in interest rates to have a great impact on the economy as a whole, as a result, modern economists are studying the interest rate decision problem, pay special attention to the relationship between the variables and the balance of the economy as a whole, the interest rate decision theory has experienced the classical interest rate theory, Keynes's interest theory, interest rate in loanable funds theory and is-lm analysis as well as the contemporary evolution of dynamic interest rate model, the development process. But how long can anyone support "god and the gun" at the cost of "bread and butter"? The meditationist populists who presided over the Roman empire knew that the populist mob needed material and diversion: bread and circuses. Angry twitter makes no sense to those who can barely afford to live with dignity, let alone tickets to the modern Colosseum to watch football matches. These managerial accounting questions correspond with effective cost assignment and optimal cash strategy tips for a small business enterprise-the appropriate combination of costs management strategies that maximizes the return and shareholders' wealth while minimizing the cost of operations, simultaneously. Macroeconomics' need for government intervention '