Why governments deliberately tie their own hands on economic policy
Flexibility sounds like an advantage, yet many governments bind themselves with balanced-budget laws, inflation targets or fixed exchange rates. The reason is credibility: if officials announce one policy and later do another, people start expecting reversals, and the policy stops working. Economists call this problem dynamic inconsistency.
Economic policy covers everything a government does to steer the economy, from tax rates and budgets to interest rates, labour rules and trade. Most tools fall into two families. Fiscal policy concerns what the state collects and spends; monetary policy is run by the central bank, chiefly by moving short-term interest rates, raising them to cool inflation and cutting them to encourage lending when growth falters. Since the late 1990s most rich countries have made their central banks independent to shield them from political pressure.
Fiscal policy leans on Keynesian thinking, which holds that total demand drives output and jobs in the short run, so a government can act as spender of last resort during a slump by borrowing. Part of that happens automatically, as tax receipts fall and unemployment payments rise, with stimulus packages layered on top. Critics raise two objections: households may save in anticipation of future taxes, an idea called Ricardian equivalence, and state borrowing may push up interest rates and crowd out private investment. Supporters reply that spending packs a bigger punch in downturns, and the evidence is mixed.
Ideas have swung widely over the centuries. Mercantilism dominated European states from the seventeenth century until Adam Smith and the classical economists challenged it. The Great Depression discredited laissez-faire and ushered in Keynesian demand management, which in turn faltered amid 1970s stagflation. Inflation targeting, fiscal rules and market liberalisation followed, until the 2008 financial crisis and the 2020 pandemic brought intervention on a scale unseen since the postwar years.
The deepest difficulty is that goals collide. Policymakers want full employment, stable prices, steady growth, balanced external accounts and a fairer distribution of income, but pushing unemployment down can lift inflation, and the trade-off traced by the Phillips curve does not hold steady over the long run. Demand-side stimulus without supply-side reforms, such as changes to labour-market rules, may simply raise wages and prices.
Source: Economic policy
