What are pegged exchange rates? Provide an example of a pegged exchange rate, with an assessment of benefits and disadvantages
Definition
A pegged exchange rate (also called a fixed exchange rate) is a regime in which a country’s currency value is tied to the value of another single currency, a basket of currencies, or a commodity (such as gold). The central bank or monetary authority maintains the peg by intervening in foreign exchange markets—buying or selling its own currency—or by adjusting interest rates and using foreign exchange reserves to keep the exchange rate at (or very close to) the targeted level.
Example
Hong Kong’s linked exchange rate system is a widely cited example: the Hong Kong dollar has been effectively pegged to the US dollar (around HK$7.8 per US$1) since 1983. Another example is the Saudi riyal, which is pegged to the US dollar.
Benefits
Exchange rate stability: Reduces currency volatility, which lowers transaction costs and exchange-rate risk for traders and investors.
Inflation discipline: Pegging to a low-inflation currency can help anchor domestic inflation expectations.
Encourages trade and investment: Predictability in exchange rates can boost cross-border trade and foreign direct investment.
Credibility: A credible peg can enhance confidence in monetary policy if institutions are viewed as committed to maintaining the peg.
Disadvantages
Loss of monetary policy autonomy: The central bank must prioritize defending the peg over using interest rates to stabilize domestic output or employment.
Need for large reserves: Maintaining a peg often requires substantial foreign-exchange reserves to intervene against market pressures.
Vulnerability to speculative attacks: If markets doubt the sustainability of a peg, speculative pressures can force costly devaluations or reserve depletion.
Potential misalignment: A fixed peg can lead to real exchange rate misalignment if economic fundamentals (inflation, productivity, fiscal positions) diverge from the anchor economy, causing trade imbalances or unemployment.
Assessment
Pegs can be advantageous for small, open economies closely linked to a dominant trading partner or where credibility of monetary policy is weak. They provide stability and can help control inflation. However, they impose constraints on macroeconomic policy and require strong institutions and sufficient reserves. When economic conditions or shocks differ from those of the anchor currency’s country, a rigid peg can become costly and may ultimately need revaluation, widening, or abandonment in favor of a more flexible regime.
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