Browse Economics

Under-Valued Currency: Economic Dynamics and Implications

Exploring the concept of under-valued currency, its historical context, economic impacts, and key considerations for global trade and finance.

Definition

An under-valued currency is one whose exchange rate relative to other currencies is lower than what is necessary for achieving external balance. This situation can bolster a country’s balance of payments on the current account by making its exports cheaper and more competitive internationally while making imports more expensive. This often improves the country’s trade surplus and can potentially make borrowing easier if the market anticipates a rise in the currency’s value.

Key Historical Events

  • The Bretton Woods Agreement (1944-1971): This system of fixed exchange rates led to occasional imbalances and necessitated currency interventions.
  • Asian Financial Crisis (1997): Many Asian currencies were devalued, causing widespread economic turmoil but eventually leading to improved export competitiveness.
  • China’s Currency Policy: Persistent allegations have been made against China for keeping the yuan undervalued to benefit from export-led growth.

Improved Balance of Payments

An under-valued currency can lead to an improved balance of payments by enhancing the competitiveness of exports.

Inflation and Cost-Push Effects

However, undervaluation can lead to imported inflation as imported goods become more expensive.

The Purchasing Power Parity (PPP) Model

PPP suggests that in the long run, exchange rates should move towards rates that equalize the prices of an identical basket of goods in any two countries.

$$ E = \frac{P_{\text{domestic}}}{P_{\text{foreign}}} $$

where \( E \) is the exchange rate, \( P_{\text{domestic}} \) is the domestic price level, and \( P_{\text{foreign}} \) is the foreign price level.

Modern Examples

  • China (2000s): Accusations of maintaining an under-valued yuan to boost export growth.
  • Japan (1980s): Implemented policies to keep the yen undervalued to support its manufacturing sector.

Determining Undervaluation

It is often challenging to precisely determine if a currency is under-valued due to dynamic and complex global economic factors.

Policy Implications

Persistent undervaluation can lead to international tensions and retaliatory trade measures.

FAQs

Q: Why would a country want an under-valued currency?

A: To make their exports more competitive, improve their trade balance, and attract foreign investment.

Q: How can one determine if a currency is under-valued?

A: By comparing the exchange rate to theoretical models like the Purchasing Power Parity (PPP) or through econometric analyses.
Revised on Monday, May 18, 2026