economic system based on investment and profit There are many types of plans that can be classified according to different criteria. The main classification criteria are: importance of plan, time limit, clarity and abstraction. However, according to these classification criteria, the type of plan obtained is not independent of each other, but is closely related. For example, short - term and long-term plans, strategic plans and job plans, etc. As hicks income concept did not specify what is called "equal wealth", and thus the income concept formed the basis of many debates concept, and the theory of accounting earnings, especially the capital preservation theory has a great influence. In accounting, people used to call "maintaining the same level of affluence" as capital preservation. It said the budget crunch was necessary to undermine Britain's fiscal position in the wake of the 2008 financial crisis. But the fund questioned whether the fiscal sector relied on spending cuts to reduce the deficit, adding that it should be seen as part of further measures. Today, because all of these reasons, the central bank hit: lost the inflation target, failure to maintain financial stability, not transparent to restore stability, without fully considering the global impact of policy. Politicians are unhappy with their performances and are seeking to regain control.