Tradeoffs of exchange rate policy with macroeconomic objectives

Exchange rate policy involves adjusting the value of a country's currency, which creates tradeoffs between key macroeconomic objectives. Lowering or raising the exchange rate can support some objectives while hindering others, requiring policymakers to balance competing priorities.

Effects of lowering the exchange rate

Lowering the exchange rate, or depreciation, makes a country's currency cheaper relative to others. This can support several macroeconomic goals by influencing trade and domestic activity.

Positive impacts of lowering the exchange rate

• Improved current account balance - Lower export prices can increase demand for exports, boosting export revenue, while higher import prices may reduce demand for imports, cutting import expenditure.
• Increased economic growth - Higher net exports (exports minus imports) raise aggregate demand, leading to greater output across the economy.
• Reduced unemployment - The rise in aggregate demand from stronger exports can increase production, creating more jobs and lowering unemployment rates.

Disadvantages of lowering the exchange rate

• Cost-push inflation - Higher prices for imported raw materials and capital goods can increase production costs, pushing up overall price levels.
• Reduced competitive pressure - Domestic firms may face less incentive to control costs.
• Demand-pull inflation - If the economy is near full employment, the boost to aggregate demand can cause excess demand, driving up prices.

Effects of raising the exchange rate

Raising the exchange rate, or appreciation, makes a country's currency more expensive relative to others. This approach often prioritises inflation control but can conflict with other objectives.

Positive impacts of raising the exchange rate

• Reduced inflation - Lower import prices help control cost-push inflation, while higher export prices may dampen demand, easing demand-pull pressures.
• Lower costs of production - Cheaper imports of raw materials and capital goods reduce overall production costs for firms.
• Reduced aggregate demand - Higher export prices and lower import prices can decrease net exports, moderating aggregate demand to prevent overheating.

Disadvantages of raising the exchange rate

• Increased current account deficit - Higher export prices may reduce demand for exports, lowering revenue, while cheaper imports can increase import expenditure, worsening the balance of payments.
• Reduced economic growth - A fall in net exports lowers aggregate demand, potentially slowing output and economic expansion.
• Increased unemployment - Weaker aggregate demand from reduced exports can lead to lower production, resulting in job losses and higher unemployment.

Factors limiting the effectiveness of exchange rate policy

The success of exchange rate policy depends on various economic conditions and external influences. These factors can reduce or reverse the intended effects, making policy outcomes unpredictable.

Role of price elasticity of demand

The effect of exchange rate changes on trade depends on how responsive demand is to price changes:

• Impact on exports - If demand for exports is elastic, a fall in export prices (from depreciation) will increase export revenue. If demand is inelastic, export revenue may fall despite lower prices.
• Impact on imports - Similarly, the effect on import expenditure relies on the price elasticity of demand for imports.

Influence of speculation

In a floating exchange rate system, speculators' actions can undermine central bank interventions. For example, if speculators expect a currency to appreciate strongly, their buying activity may outweigh central bank sales, preventing the desired depreciation.

Objectives of other countries

• Governments may resist deliberate currency depreciation if it is seen as an unfair competitive tactic, potentially leading to retaliatory measures.
• Additionally, rising prices for imported raw materials and capital goods can quickly offset any competitive gains from a lower exchange rate.

Availability of foreign currency reserves

Central banks need sufficient foreign currency reserves to support appreciation efforts, such as buying their own currency. Limited reserves can restrict the ability to raise the exchange rate effectively.

Actions of other central banks

Exchange rates are affected by interventions from multiple central banks, which can counteract a single country's policy. For instance, if an African central bank sells its currency to buy US dollars and depreciate its value, the Federal Reserve might respond by buying the African currency, neutralising the effect.