In an economy operating at over full employment equilibrium, inflationary pressures begin to build up because of excessive demand. When demand exceeds the economy's productive capacity, prices rise, leading to inflation.
To restore equilibrium and reduce inflationary pressures, the government can reduce its expenditure. This action will lead to a contraction in aggregate demand, effectively cooling down the economy and helping to control inflation.
It is important to note that reducing taxes or lowering interest rates would have the opposite effect. These actions would increase demand further, worsening the inflationary problem. With more disposable income and cheaper borrowing costs, consumption and investment would rise, thus pushing prices even higher.
Therefore, to tackle inflation in such a scenario, a reduction in government expenditure is a more effective tool for controlling demand and restoring balance in the economy.