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A ''balanced budget'' (particularly that of a government) refers to a budget in which revenues are equal to expenditures. Thus, neither a budget deficit nor a budget surplus exists ("the accounts ''balance''"). More generally, it refers to a budget that has no budget deficit, but could possibly have a budget surplus. A ''cyclically'' balanced budget is a budget that is not necessarily balanced year-to-year, but is balanced over the economic cycle, running a surplus in boom years and running a deficit in lean years, with these offsetting over time. Balanced budgets and the associated topic of budget deficits are a contentious point within academic economics and within politics. The mainstream economic view is that having a balanced budget in every year is not desirable, with budget deficits in lean times being desirable. Most economists have also agreed that a balanced budget would decrease interest rates, increase savings and investment,〔 shrink trade deficits and help the economy grow faster in the longer term.〔 == Economic views == Mainstream economics—mainly advocates a cyclic balanced budget, arguing from the perspective of Keynesian economics—budget deficits provide fiscal stimulus in lean times, while budget surpluses provide restraint in boom times. However, it should be noted that Keynesian economics does not advocate for fiscal stimulus when the existing government debt is already significant. Alternative currents in the mainstream and branches of heterodox economics argue differently, with some arguing that budget deficits are always harmful, and others arguing that budget deficits are not only beneficial, but also necessary. Schools which often argue against the effectiveness of budget deficits as cyclical tools include the freshwater school of mainstream economics and neoclassical economics more generally, and the Austrian school of economics. Budget deficits are argued to be necessary by some within Post-Keynesian economics, notably the Chartalist school. :''Larger deficits,'' sufficient to recycle savings out of a growing gross domestic product (GDP) in excess of what can be recycled by profit-seeking private investment, are not an economic sin but ''an economic necessity.'' Budget deficits can usually be calculated by subtractng the total planned expenditure from the total available budget. This will then show either a budget deficit (a negative total) or a budget surplus (a positive total). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「balanced budget」の詳細全文を読む スポンサード リンク
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