If global standardization occurs and a universal currency is created, we will experience easier trade, no price manipulation, and developing nations will evade hyperinflation. But this will mean the supply and value of money will no longer be controlled at a national level, and monetary policies would not work.
Understanding what determines currency value is important for policymakers, investors, and any person who is influenced by it. “A currency’s value is essentially a mirror to the economy it represents,” explains Kenneth Rogoff, Professor of Economics at Harvard University and former Chief Economist at the IMF.
As of 2024, the U.S. dollar remains the world’s dominant reserve currency, accounting for nearly 60% of global foreign exchange reserves, according to the IMF. Not all currencies enjoy such prominence. This article uncovers 17 core reasons why currencies are not all created equal—and why understanding them matters.
Interest Rates Set by Central Banks
Interest rates directly influence the demand and supply for a currency, inflation, government borrowing, and global trade. Higher rates attract foreign investors looking for better returns, boosting demand and, by extension, currency value.
Conversely, low interest rates can reduce demand and lead to depreciation. Take the U.S. Federal Reserve, which raised interest rates multiple times between 2022 and 2023 to combat inflation—each hike strengthened the dollar. Bank for International Settlements suggests these decisions influence not just currency values but also capital flows across borders.
Inflation Rate
CPI (Consumer Price Index) inflation plays a major role in determining a currency’s strength. Lower inflation generally equates to a stable currency because purchasing power is preserved over time. Countries with high inflation often see their currencies lose value rapidly.
For example, Zimbabwe’s hyperinflation in the late 2000s rendered its dollar virtually worthless. In contrast, countries like Switzerland maintain low inflation, reinforcing the Swiss franc’s reputation as a safe haven.
Economic Growth (GDP)
Can wealth measure well-being? Prices in a capitalist economy are determined by supply and demand. This can determine how much better off individuals believe a good or service can make them. Greater wealth often provides increased access to resources that enhance daily living. It’s conceivable that honest wealth creates the most value for others, in an economic sense.
Conclusively, higher GDP is directly proportional to greater human progress, because it means a greater amount or greater value of goods and services has been created. Foreign investment is a result of a growing economy, which increases demand for the national currency. High GDP growth indicates strong productivity and income levels, suggesting a healthier economic environment. As a result, currency value tends to appreciate.
The World Bank’s 2023 data shows India’s robust GDP growth drew in record levels of foreign direct investment (FDI), supporting the rupee despite global headwinds. Stable growth also helps reassure bond and equity investors.
Trade Balances (Exports vs. Imports)
When a country exports more than it imports, there’s a higher demand for its currency. This surplus means foreign buyers converting their currencies to purchase goods, boosting the local currency’s value. A trade deficit, conversely, can weaken currency value.
Germany and China are prime examples of nations with persistent trade surpluses that bolster their currencies. Meanwhile, countries like the U.S., despite their trade deficit, maintain strength due to their reserve currency status and capital inflows.
Public Debt Levels
“Excessively indebted countries have to generate a trade surplus to service foreign debt until international creditworthiness is restored,” Helmut Reisen. This leads to a massive shift in the external transfer of foreign exchange from the debtor countries’ governments to foreign creditors.
High national debt can erode investor confidence, especially if there’s a risk of default. Large deficits often lead to inflation or concerns about currency debasement. Countries with sustainable debt-to-GDP ratios are more likely to maintain a strong currency.
Japan, despite having the highest debt-to-GDP ratio among developed nations, maintains a strong yen partly due to domestic ownership of debt and low interest rates. However, developing countries with high external debt often face currency crises.
Political Stability and Governance
Investors may become anxious and pull their capital from markets during times of turmoil in governance, therefore weakening the currency. Nations with stable governments and transparent institutions inspire investor confidence. Political turmoil or corruption can cause rapid capital flight and a collapse in currency value.
A time of huge uncertainty, investors caused significant fluctuations in the Pound (GBP) following Brexit. Ongoing negotiations and multiple possible outcomes for the relationship between the UK and EU created an extended period of instability, with consequences for both businesses and investors.
Foreign Exchange Reserves
Central banks use foreign reserves to stabilize or defend their currencies. A high level of reserves gives a country the firepower to manage external shocks and build confidence. It also allows them to intervene in forex markets during volatility.
China holds the world’s largest foreign exchange reserves, over $3 trillion, helping stabilize the yuan. The IMF recommends that countries hold reserves equal to at least three months of imports for an adequate financial cushion.
Speculation and Market Sentiment
Large volumes of currency trades happen based on future predictions rather than current fundamentals. Trader expectations and speculative moves in the foreign exchange market can cause currency values to fluctuate in the short term. This makes sentiment a powerful, if volatile driver.
The pound sterling saw extreme fluctuations following Brexit announcements, purely due to market sentiment, even before economic changes materialized. According to the Bank of England, sentiment-based trades account for 30-40% of daily forex volume
Capital Controls and Convertibility
Free convertibility of a currency increases its appeal in global markets. Restrictions, on the other hand, deter foreign investment and limit international usage. Countries with open capital accounts tend to have stronger, more liquid currencies.
India and China still maintain some capital controls, limiting their currencies’ global use. The U.S. dollar and euro, being fully convertible, dominate international trade and reserves.
Natural Resource Endowments
Resource-rich countries can benefit from strong currencies when commodity prices rise. Oil, gas, and precious metals can boost trade balances and government revenue. However, overreliance creates vulnerability to price shocks.
Norway’s krone is buoyed by oil exports, supported by a well-managed sovereign wealth fund. In contrast, Nigeria’s naira remains volatile despite oil wealth due to governance issues and overdependence on crude exports
Level of Foreign Investment (FDI and Portfolio)
Exchange rates can influence both the total amount of foreign direct investment that takes place and the allocation of this investment spending across a range of countries. Foreign direct investment brings in capital, increases demand for the local currency, and signals investor confidence. Countries that attract consistent FDI typically have stronger currencies.
The same applies to portfolio investments in bonds and stocks. Investors holding bonds issued abroad and denominated in foreign currency face the additional risk of currency changes to their overall return.
In Southeast Asia, UNCTAD reported, between 2021 and 2023, foreign investments averaged an impressive $220 billion per year, solidifying ASEAN’s status as among the top FDI recipients among developing economies for three consecutive years. Capital inflows also create deeper, more liquid financial markets.
Balance of Payments Position
A positive balance of payments suggests a net inflow of foreign currency. This improves currency strength and reflects economic health. Deficits, especially persistent ones, signal external vulnerabilities.
South Korea and Singapore maintain strong balance of payments positions, enhancing currency resilience. The IMF tracks these imbalances closely, using them to assess exchange rate misalignments.
Currency Pegs and Exchange Rate Regimes
The U.S. dollar currency is commonly pegged to other willing currencies, which limits its independent valuation. Pegs can create artificial stability but also risk collapse if economic fundamentals diverge. Floating currencies fluctuate freely based on market forces. The government still intervenes occasionally to keep the exchange rate within a reasonable fluctuation band.
However much a currency peg forces the local currency to adopt the monetary policy of the foreign currency, Hong Kong pegs its dollar to the U.S. dollar within a tight band, backed by strong reserves. Argentina’s past attempts at pegs failed disastrously, leading to massive devaluations.
Monetary Policy Credibility
A central bank’s credibility determines how effectively it can manage inflation and support its currency. The effectiveness of monetary policy is majorly influenced by exogenous, fiscal dominance, dollarization and global risks. If markets trust the institution to act independently and transparently, the currency benefits. Lack of trust leads to volatility.
The European Central Bank and the Swiss National Bank are trusted globally, contributing to the strength of the euro and the franc. In contrast, countries with politicized monetary policy often suffer currency depreciation.
Current Account Deficit or Surplus
The eurozone maintains a collective current account surplus, supporting the euro despite regional disparities. A current account surplus suggests a country is a net lender to the rest of the world, which tends to strengthen its currency.
A deficit, however, indicates dependence on foreign capital, which may lead to depreciation under pressure. Persistent current account deficits, like those in Turkey, often pressure the lira downward.
Global Risk Appetite and Safe Haven Flows
Risk appetite is the willingness of investors to bear financial risk while expecting to generate a potential profit. During global crises, investors flee to perceived “safe haven” currencies like the U.S. dollar, Swiss franc, or Japanese yen. These flows can strengthen these currencies even if their domestic fundamentals aren’t ideal. It’s a reflection of global trust.
The 2020 COVID-19 pandemic saw a massive surge into U.S. Treasuries and the dollar, despite domestic economic contraction. These flows often reverse once markets stabilize, creating cyclical effects.
Technological and Financial Infrastructure
Countries with advanced banking systems, digital payment platforms, and transparent financial infrastructure are better positioned to attract capital. These advantages support long-term currency strength. Fintech and blockchain integration are now emerging differentiators.
Singapore, with its advanced digital economy, punches above its weight in currency strength. Outdated technological and financial infrastructure makes a nation face higher transaction costs and lower investor trust, weakening its currency appeal.
Disclaimer – The Finance Key does not provide and does not intend to provide financial, investment, tax, or legal advice. Information contained in this article is for informational and educational purposes only. This list is solely the author’s opinion based on research and publicly available information. Including links to third-party content is not an endorsement by The Finance Key of such content or services. Please do your due diligence and use your discretion.
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