Exchange rate regimes play a crucial role in shaping a country’s macroeconomic stability, trade dynamics, and investor confidence. While some nations allow their currencies to float freely based on market forces, others adopt central bank-controlled systems, in which exchange rates are directly influenced or fixed by monetary authorities. This essay explores the countries that implement central bank-controlled exchange rates and examines the economic consequences of such systems.
Understanding Central Bank-Controlled Exchange Rates
A central bank-controlled exchange rate, also known as a fixed or managed exchange rate regime, is one where the national currency’s value is either pegged to another major currency (such as the U.S. dollar or euro) or kept within a narrow band of fluctuation. This is achieved through the central bank’s intervention in the foreign exchange market—buying or selling foreign currency, adjusting interest rates, and sometimes using foreign exchange reserves to defend the currency’s value.
This form of control is often used to achieve short-term economic stability, particularly in economies with fragile institutions or high dependence on imports. Ghana is no exception to high import. However, while such regimes may appear beneficial in the short term, they often come with long-term challenges that can undermine broader economic development.
Countries Practicing Central Bank-Controlled Exchange Rates
Several countries across the globe, particularly in the Global South, have opted for controlled exchange rate regimes. Notable among them is China, whose central bank, the People’s Bank of China (PBoC), employs a tightly managed float system. It sets a daily reference rate for the yuan and allows limited fluctuations within a specified band, intervening as needed to stabilize the currency.
In Nigeria, the Central Bank of Nigeria (CBN) has historically operated a multiple exchange rate regime, fixing the naira at an official rate while also intervening in parallel markets. Similarly, Saudi Arabia pegs its currency—the riyal—directly to the U.S. dollar, a strategy it has maintained for decades to ensure oil revenue stability.
Venezuela, Zimbabwe, and Ethiopia have also implemented various forms of currency control, often in response to economic crises. In Vietnam, the State Bank of Vietnam manages the dong within a limited range by setting daily reference rates and intervening when necessary. Even countries like India, while technically operating a floating exchange rate, have central banks that regularly intervene to reduce excessive volatility.
Short-Term Benefits of Exchange Rate Control
Controlled exchange rates offer several immediate advantages. Firstly, they provide exchange rate stability, especially important for economies that rely heavily on imports for essential goods such as fuel, medicine, or machinery. Stability in currency value helps businesses and consumers plan more effectively and reduces the risk of imported inflation.
Secondly, governments use fixed exchange rates to control inflation, particularly in countries emerging from hyperinflation or economic instability. By anchoring the currency to a stronger one, central banks can help restore public confidence and stabilize prices. Moreover, in the short term, a stable or overvalued currency may help reduce the cost of foreign-denominated debt servicing and boost investor sentiment.
Economic Consequences and Long-Term Risks
Despite these benefits, the long-term consequences of centrally controlled exchange rates are often detrimental. One of the most serious challenges is the emergence of black markets and parallel exchange rates. When the official rate is set far below the market rate, a thriving informal market for foreign exchange emerges. This has been the case in Nigeria, Venezuela, and Zimbabwe, where the gap between official and black market rates has at times exceeded 100%, creating severe distortions in pricing and business operations.
Another key risk is the depletion of foreign reserves. To maintain the official rate, central banks are forced to sell large amounts of foreign currency—often U.S. dollars—to meet local demand. Over time, this erodes national reserves and can lead to a full-blown balance of payments crisis, as seen in Egypt before its 2016 currency float and in Ghana during its recent economic struggles.
A related problem is currency misalignment. Fixed exchange rates can result in overvalued currencies, making a country’s exports less competitive while encouraging excessive imports. This worsens trade deficits and undermines local production. Over time, such misalignment may force a sudden and painful devaluation that shocks the economy and weakens investor confidence.
Moreover, central bank control over exchange rates often limits monetary policy flexibility. Since maintaining the peg requires the central bank to focus on exchange rate targets, it may be unable to adjust interest rates to address domestic concerns such as unemployment or growth.
In many cases, exchange controls create fertile ground for corruption and rent-seeking behavior. When foreign currency is scarce, access to it at official rates becomes a privilege. Individuals with political connections or insider status exploit arbitrage opportunities by acquiring dollars at subsidized rates and reselling them at market prices—diverting public resources and worsening inequality.
Conclusion
Central bank-controlled exchange rate regimes are often adopted with the goal of achieving stability and insulating economies from external shocks. While they offer short-term benefits such as inflation control and currency predictability, the long-term consequences are frequently negative. This is what Ghana is doing to make its currency stronger than the dollar. Persistent intervention in the foreign exchange market can deplete reserves, distort markets, fuel corruption, and eventually trigger financial crises.
For these reasons, it is imperative to embrace exchange rate flexibility—either through floating regimes or managed floats with minimal intervention. Exchange rate control must be market driven over state control. Ultimately, the success of any exchange rate system depends on strong institutions, transparent governance, and sound macroeconomic policies that support market confidence and long-term stability.
By: Peter Bismark, Executive Director,
Instititue for Liberty and Policy Innovation
