Think of the exchange rate as the price of a pizza in different countries. If a pizza costs €10 in Italy and $12 in the USA, the exchange rate tells you how many dollars you need to buy that pizza. Governments can influence this price through exchange rate policy to help the economy.
The main macroeconomic objectives are:
By adjusting the exchange rate, a country can influence exports, imports, inflation, and interest rates, which in turn affect the above objectives.
| Regime | Key Features | Typical Policy Tools |
|---|---|---|
| Fixed (Pegged) | Currency value is tied to another currency or a basket. | Open market operations, foreign‑exchange reserves, interest‑rate adjustments. |
| Floating | Value determined by market forces. | Monetary policy (interest rates), fiscal policy, capital controls. |
| Managed Float | Market determines rate but authorities intervene occasionally. | Targeted interventions, policy announcements, selective interest‑rate changes. |
When a currency depreciates (gets cheaper), exports become cheaper abroad and imports become more expensive. This can:
Conversely, an appreciation (gets more expensive) can:
The nominal exchange rate (\$E\$) is the ratio of the foreign price level (\$P^*\$) to the domestic price level (\$P\$):
\$E = \frac{P^*}{P}\$
If domestic prices rise faster than foreign prices, \$E\$ will fall (depreciation).
Price Stability: A depreciation can increase inflation if import prices rise, but can also decrease inflation by making imports cheaper. Effectiveness depends on the economy’s openness and the price elasticity of demand for imports.
Full Employment: By boosting exports, a depreciation can create jobs in export sectors. However, the impact on overall employment is limited if the economy is highly diversified or if capital controls restrict labor mobility.
Economic Growth: A well‑timed depreciation can stimulate GDP growth through increased export earnings. The growth effect is stronger when the economy has spare capacity and high export potential.
Balance of Payments: Depreciation improves the current account by making exports cheaper and imports more expensive. However, it can also lead to a capital outflow if investors fear a weaker currency.
While exchange rate policy can target multiple objectives, it comes with trade‑offs:
1. Use the “Impact, Mechanism, Trade‑Off” structure:
2. Include relevant diagrams: Show a simple supply‑demand diagram for the current account or a price level chart.
3. Use real‑world examples: Refer to recent events like the UK’s 2016 currency depreciation or the Eurozone’s managed float.
4. Remember the policy tools: Open market operations, interest‑rate changes, foreign‑exchange reserves, capital controls.
5. Keep your answer concise: Aim for 150–200 words per question.
Fixed Regime: Stable but requires large reserves.
Floating Regime: Flexible but can be volatile.
Managed Float: Best of both worlds if managed well.
Remember: Depreciation → Exports up, imports up, inflation risk; Appreciation → Exports down, imports down, inflation relief.