Revise Government macroeconomic policy objectives for Cambridge 9708 (10.1)

Governments worldwide pursue several key macroeconomic objectives to ensure the stability and prosperity of their economies. The four principal goals are: sustainable economic growth, low and stable inflation (price stability), low unemployment (or full employment), and a stable balance of payments position. Sustainable growth refers to an increase in the economy's productive potential (long-run aggregate supply) without causing excessive inflation or environmental degradation. Price stability, often targeted at a low positive rate like 2%, prevents the erosion of purchasing power and economic uncertainty. Full employment aims to minimise cyclical unemployment, accepting that some frictional and structural unemployment will always exist. Finally, a stable balance of payments, particularly on the current account, avoids large, persistent deficits or surpluses that can create external pressures on the economy.

A fundamental conflict often arises between achieving rapid economic growth and maintaining low inflation. When a government stimulates aggregate demand (AD) to boost short-run actual growth and reduce unemployment, the economy may approach its full capacity. This increased pressure on resources can lead to demand-pull inflation, as firms raise prices in response to higher demand and rising costs (e.g., wages). The ideal objective is therefore sustainable economic growth, which involves an increase in the economy's productive capacity (a rightward shift of the LRAS curve). This type of growth is non-inflationary as the economy's ability to supply goods and services increases in line with demand. Supply-side policies are key to achieving this, but their effects are often long-term.

Another significant trade-off exists between reducing unemployment and maintaining a stable balance of payments. Policies designed to lower unemployment, such as expansionary fiscal or monetary policy, increase aggregate demand and national income. As households' disposable incomes rise, their marginal propensity to import (MPM) means they will spend more on foreign goods and services. This increase in import expenditure, assuming exports remain constant, will worsen the current account position, potentially leading to a larger deficit. Conversely, policies aimed at reducing a current account deficit, such as contractionary demand-side policies, will lower national income, reduce import spending, but at the cost of higher unemployment. This highlights the difficulty of simultaneously achieving internal and external balance.

The Phillips Curve illustrates the short-run inverse relationship between the rate of inflation and the rate of unemployment. It suggests that policymakers face a trade-off: they can accept higher inflation to achieve lower unemployment, or tolerate higher unemployment to achieve lower inflation. For example, boosting aggregate demand reduces unemployment but creates demand-pull inflationary pressures. However, this trade-off may not exist in the long run. Monetarist economists argue the Long-Run Phillips Curve (LRPC) is vertical at the Natural Rate of Unemployment (NRU). They contend that any attempt to hold unemployment below the NRU through demand-side policy will only lead to accelerating inflation, as workers' inflationary expectations adjust, with no permanent reduction in unemployment.