Table of Contents
Many African currencies are weaker than the US dollar because the global financial system runs largely on dollars, while many African countries consistently need more dollars than they earn. Governments and businesses rely on dollars to pay for imports, service foreign debt, and settle international trade, but they can only obtain them through exports, tourism, remittances, foreign investment, or borrowing. When demand for dollars exceeds supply, the dollar becomes more expensive to buy, causing currencies such as the naira, cedi, and shilling to lose value. Limited foreign exchange reserves, dependence on commodity exports, inflation, and changes in US monetary policy often make that imbalance even worse.
The dollar’s influence extends far beyond the United States. Although the country produces about a quarter of the world’s economic output, its currency dominates international finance. According to the International Monetary Fund (IMF), the US dollar accounted for 57.1% of the world’s allocated foreign exchange reserves in the first quarter of 2026, compared with about 20% for the euro and 2% for the Chinese renminbi. The US Federal Reserve also reports that the dollar is used in 96% of export invoices in the Americas, 74% across the Asia-Pacific region, and 79% in much of the rest of the world, while accounting for roughly half of all international SWIFT payment transactions.
This means two countries can trade with each other without involving the United States and still need US dollars to complete the transaction. A Kenyan company importing machinery from China or a Nigerian pharmaceutical distributor buying medicines from India will often settle those purchases in dollars because it remains the world’s preferred trading currency. Every transaction like this reinforces global demand for the dollar.
For African economies, that creates a structural challenge. Unlike the United States, they cannot print the currency that dominates global trade. Every dollar entering an economy must first be earned through exports, tourism, remittances, foreign direct investment, or external borrowing. Yet governments and businesses spend billions of dollars every year importing machinery, electrical equipment, vehicles, pharmaceuticals, chemicals, fertilisers, refined petroleum products, and food. As long as more dollars leave an economy than enter it, pressure builds on the exchange rate.
Africa’s trade pattern makes that imbalance even more pronounced. According to Afreximbank’s African Trade Report 2025, machinery, electrical equipment, vehicles, pharmaceuticals, chemicals, and cereals rank among the continent’s largest imports, and nearly all are priced in US dollars. Meanwhile, UNCTAD estimates that many African economies derive more than 60% of their merchandise export earnings from commodities such as crude oil, gold, cocoa, copper, coffee, and cobalt.
That difference matters because imports and exports behave very differently. Countries cannot simply stop importing fuel, medicines, machinery, or fertiliser when commodity prices fall. Export earnings, however, can decline rapidly. When oil prices weaken, cocoa harvests disappoint, or demand for copper falls, billions of dollars in export revenue disappear while the need for dollars to pay for essential imports remains largely unchanged.
Nigeria illustrates this challenge. Although it is Africa’s largest crude oil producer, the country spent years exporting crude while importing large quantities of refined petroleum products because domestic refining capacity could not meet demand. In effect, many of the dollars earned from oil exports were spent buying fuel back from international markets. As domestic refining capacity has expanded, that pressure has started to ease. According to the IMF, Nigeria’s gross international reserves increased from US$33.2 billion in 2023 to US$40.2 billion in 2024, while import cover improved from 5.4 months to 5.7 months, with projections of 7.5 months in 2025 and 7.7 months in 2026. Larger reserves give the Central Bank of Nigeria greater capacity to supply dollars during periods of heavy demand, helping reduce pressure on the naira.
Foreign exchange reserves are only part of the story. The dollar’s strength is also shaped by decisions made outside Africa. When the US Federal Reserve raises interest rates, investors earn higher returns from US Treasury securities and other dollar-denominated assets. Capital then flows into the United States, increasing demand for dollars while reducing investment flowing into many emerging and frontier markets. The IMF has repeatedly warned that tighter US monetary policy strengthens the dollar, raises global borrowing costs, and encourages investors to shift capital towards dollar-denominated assets, placing additional pressure on African currencies.
A stronger dollar also makes foreign debt more expensive. Many African governments borrow in dollars because international investors are often unwilling to lend large sums in local currencies. Every interest payment and loan repayment must therefore be made in US dollars. As local currencies weaken, governments need more naira, cedis, shillings, or other currencies to purchase the same amount of dollars needed to service those debts.
The scale of that burden is significant. According to development finance data cited by Reuters, Africa’s external public debt exceeded US$1 trillion in 2023, while the continent’s debt-servicing costs have nearly tripled since 2010. Africa is also projected to face an annual financing gap of more than US$400 billion by 2030. Nigeria alone had external debt of about US$119.3 billion, with the IMF projecting it will exceed US$132 billion by 2026. Every dollar used to repay debt is one that cannot be used to finance imports, stabilise currencies, or support economic growth.
Not every African currency, however, responds in the same way. Reuters reported that Ghana’s cedi came under pressure in 2026 as strong corporate demand for dollars, particularly from the energy sector, exceeded available foreign currency. Kenya’s shilling remained relatively stable because export earnings, remittances, and foreign exchange inflows more closely matched demand for dollars, while Uganda’s shilling benefited from strong coffee export receipts and remittances. These examples show that countries with stronger reserves, more diversified exports, and healthier foreign exchange inflows are generally better positioned to withstand periods of dollar strength.
Reducing dependence on the dollar will take time, but African countries are not without options. Nigeria is expanding domestic refining capacity to reduce fuel imports, while Guinea is encouraging more local processing of bauxite and Zimbabwe is promoting domestic lithium processing. These efforts aim to retain more value within local economies instead of exporting raw materials and importing higher-value finished products.
Diversifying exports will be equally important. According to UNCTAD, many African economies still earn more than 60% of their export revenue from commodities, making them vulnerable to swings in global prices. Expanding manufacturing, technology, tourism, business services, value-added agriculture, and trade under the African Continental Free Trade Area (AfCFTA) would create more stable sources of foreign exchange while reducing dependence on a narrow range of exports.
So, why is the dollar so strong against African currencies? The answer lies in both global and domestic realities. The dollar dominates global reserves, international trade, cross-border payments, and financial markets, creating constant worldwide demand. Many African countries, meanwhile, compete for a limited supply of dollars to pay for imports, service foreign debt, and finance international transactions. When demand for dollars grows faster than the supply earned through exports, tourism, remittances, and investment, local currencies come under pressure.
The consequences extend far beyond financial markets. Businesses face higher import costs, governments spend more servicing foreign debt, and households often pay more for fuel, food, medicines, and other imported goods. Ultimately, the challenge is not that African currencies are inherently weak but that many African economies operate within a financial system where the US dollar remains the world’s dominant currency. Countries that diversify exports, strengthen manufacturing, build healthier foreign exchange reserves, manage external debt prudently, and attract sustained investment will be better positioned to stabilise their currencies over time.
