The Investment Relationship Between Commodities and African Currencies

A 2026 Intelligence Brief from Accra Street Journal

From the copper mines of Zambia to the gold fields of Ghana, the pulse of Africa’s commodity sector beats in direct rhythm with the continent’s foreign exchange markets. For investors navigating African currencies, understanding this relationship is not optional—it is foundational.

Academic research confirms that commodities and currencies function as net transmitters of shocks across Sub-Saharan African financial systems, while equity markets serve primarily as shock receivers . This means that when cocoa prices surge in London or copper tumbles in Shanghai, the ripples hit African exchange rates first and hardest.

This ASJ report examines the mechanisms linking commodity prices to African currencies, analyzes the divergent fortunes of resource exporters and importers, and provides a framework for investors to anticipate and manage currency risk in commodity-dependent African economies.

Part 1: The Theoretical Framework—Why Commodities Drive Currencies

The relationship between commodity prices and exchange rates is not incidental. It is structural, measurable, and—for commodity-dependent African economies—determinative.

The Commodity-Exchange Rate Model (CERM)

Traditional economic models, such as purchasing power parity (PPP), have proven inadequate for explaining exchange rate movements in commodity-dependent economies. The Commodity-Exchange Rate Model (CERM) offers a more robust framework .

The CERM posits that in economies heavily reliant on primary commodities, exchange rates are fundamentally driven by commodity price fluctuations rather than traditional macroeconomic factors emphasized by PPP . This occurs through two primary channels:

Per the standard commodity-currency models, a rise in commodity prices due to improving trade terms leads to currency appreciation, while the opposite occurs during a commodity price decline .

The Commodity-Currency-EQUITY Nexus

A comprehensive 2025 academic study analyzing Botswana, Ghana, Kenya, and Namibia from 2012 to 2022 revealed that commodities and currencies act as net transmitters of shocks, while equity markets in these countries serve primarily as shock receivers .

The study identified contagion during multiple crisis periods:

The Nickel market upheaval of March 2022 serves as a stark illustration. Nickel witnessed a daily surge of 250% on March 8, Prices soared from 30,000 to 100,000 before dropping to 48,048. Aluminium fluctuated from 4,000 to 2,500, while zinc shifted from 4,499.5 to $2,931.4 between March and June. These swings rippled through African equity markets, with the Ghana Stock Exchange seeing a 12.38% drop in its composite index and the Nairobi Securities Exchange facing a 31% decline in turnover.

Key finding for investors: African equity markets in commodity-dependent nations are not primary drivers of volatility—they are consequences of volatility originating in commodity and currency markets. This has profound implications for portfolio diversification and hedging strategies.

Part 2: The Transmission Mechanisms—How Prices Move Through Economies

Understanding how commodity price changes translate into currency movements requires examining four distinct transmission channels.

Channel 1: Terms of Trade Effect

A country’s terms of trade—the ratio of export prices to import prices—directly affects currency valuation. When commodity prices rise for an exporting nation, export earnings increase, improving the current account and typically strengthening the currency.

Zambia’s copper rally (2025–2026): Copper prices smashed through $13,000 a ton for the first time, a nearly 50% increase since the start of 2025 . Zambia, Africa’s second-largest copper producer, saw its kwacha advance 26% against the dollar, and yields on its dollar bonds fell to record lows . The kwacha closely tracks copper prices, which jumped by more than a third in 2025, pushing the currency up 24% .

DRC’s copper boom: Copper production in the Democratic Republic of Congo has tripled over the past decade, making it the world’s biggest supplier after Chile . The Congolese franc gained almost 28% against the dollar in 2025 as the metal rallied .

Channel 2: The Oil Price Divergence

Oil prices affect African currencies differently depending on whether a country is a net importer or exporter.

In Kenya, retail fuel prices rose by as much as 23.5% following a significant increase, with officials pointing to tight global crude supplies and elevated energy costs tied to Middle East conflicts . Fuel is effectively priced in dollars, so when the dollar bill rises, importers and distributors often rush to secure more hard currency at once, tightening local supply.

Channel 3: Investor Sentiment and Safe-Haven Flows

Investor sentiment plays a crucial role in amplifying or moderating commodity-currency linkages. Research shows that market sentiment partly intensifies commodity-driven currency volatility .

The gold safe-haven effect: During periods of heightened geopolitical tension, gold receives safe-haven flows that benefit gold-producing nations’ currencies. South Africa’s rand reached multi-year highs partly due to the gold rally . However, the South African Reserve Bank has been cautious about using this windfall to cut rates, instead using the currency strength to lock in a new 3% inflation target .

Channel 4: Currency Pressure Zones

The International Monetary Fund (IMF) has identified currency pressure zones where depreciation exceeds 20% thresholds. Ghana, Gambia, and Madagascar have been categorized as experiencing “high pressures” .

In Ghana, “official” auctions keep drawing more than $500 million of bids, signaling that companies are struggling to source dollars through normal channels . This gap between the official rate and the rate businesses actually pay makes short-term moves choppier and raises costs for importers that need hard currency on a deadline.

Part 3: The 2025–2026 Divergence—Country-by-Country Analysis

Not all African currencies respond identically to commodity price movements. The past 18 months have revealed significant divergence based on each country’s specific commodity exposure, policy framework, and structural resilience.

Zambia: The Copper Success Story

Zambia’s kwacha has been one of Africa’s best-performing currencies, driven by extraordinary copper price strength. Copper surged toward $13,000 a ton in London on concern that global supplies would dwindle as US companies stepped up imports ahead of potential tariff increases .

Key metrics:

• Kwacha advanced 26% against the dollar in 2025 

• The kwacha closely tracks copper prices, which jumped by more than a third 

• Zambia aims to more than triple its copper output by the early 2030s 

The Bank of Zambia has also ordered that all domestic transactions be settled in the local currency instead of dollars, providing exemptions for mining companies that will continue paying taxes in dollars . This policy aims to support wider use of the kwacha and reduce dollarization.

Ghana: Gold’s Mixed Blessing

Ghana, Africa’s top gold producer, has benefited enormously from record gold prices. The Bank of Ghana used its golden windfall to fuel a dramatic 250-basis-point cut to 15.5% .

Yet the cedi’s story is more complex. Despite gold’s strength, the cedi weakened to 11.56 per dollar from 11.30 a week earlier, with traders reporting unmet corporate demand and central bank foreign-exchange auctions drawing more than $500 million in bids in each of the last two rounds .

The structural constraint: Ghana’s gold sector is largely driven by open-pit and artisanal mining, which has shown agility in responding to price surges. However, the country faces persistent pressure from oil imports, dividend repatriation by foreign investors, and structural demand for dollars that gold revenues alone cannot fully offset.

South Africa: The Policy-Driven Rand

South Africa presents a unique case: despite benefiting from the gold and platinum rally, the South African Reserve Bank has resisted cutting rates, holding its repo rate at 6.75% .

SARB Governor Lesetja Kganyago explained the rationale: “Geopolitical tensions remain elevated, reflecting what appears to be a rupture in the global political order. Markets are jittery, and precious metals like gold have received safe-haven flows” .

The SARB is using the currency strength to lock in a new, ambitious 3% inflation target announced last year . This represents a strategic choice: prioritizing long-term inflation credibility over short-term growth stimulus.

Kenya: Oil Import Vulnerability

Kenya, a net oil importer, faces persistent pressure from higher energy costs. The shilling is near 129.25/129.55, and traders expect month-end payments to lift dollar demand, while fuel price tensions have transport operators warning of strike action if pump prices are not cut .

Kenya’s retail fuel prices rose by as much as 23.5% after a big increase the prior month, with officials pointing to tight global crude supplies and elevated energy costs tied to the Middle East conflict .

Nigeria: Stability Through Reform

Nigeria’s naira is expected to stay broadly stable, supported by softer demand and better supply . This represents a significant improvement from the extreme volatility of 2023–2024.

The Dangote Refinery’s emergence as a game-changer—reportedly making Nigeria a net fuel exporter of refined petroleum as of March 2026—has reduced the country’s vulnerability to imported fuel price shocks . Plans to double capacity to 1.3 million barrels per day would further insulate Nigeria from global price volatility.

Part 4: The Financial Integration Insight—From Static to Dynamic Analysis

Academic research has advanced beyond simple commodity-currency correlations to sophisticated dynamic analysis. A 2025 study employing the Barunik and Křehlík spillover index (BK-18) and time-varying parameter vector autoregression (TVP-VAR) revealed important temporal patterns .

Short, Medium, and Long-Term Dynamics

The study contradicts prior findings regarding the prevalence of short-term risk in most global markets. SSA markets display unique risk transmission patterns that make them potentially more appealing for diversification .

Net Transmitters vs. Receivers

The research clearly identifies commodities and currencies as net transmitters of shocks, while sampled equity markets served as shock receivers—with few exceptions .

The investor implication: In Sub-Saharan African markets, currency risk is not merely a factor to hedge; it is a primary driver of broader financial volatility. Equity positions in these markets are, to a significant degree, currency positions in disguise.

The Role of Market Sentiment

The partial-wavelet analysis indicates that market sentiments partly intensify commodity-driven currency volatility . The VIX (volatility index) plays a role in amplifying the relationship between commodity prices and exchange rates, particularly during crisis periods.

The multivariate wavelet results reveal heightened systemic predictiveness, with specific commodities (like corn in the Madagascan sub-system) driving currency dynamics in ways that single-commodity analysis would miss .

Part 5: The Outlook for 2026–2027—Diverging Paths

African currencies face a complex outlook in 2026, characterized by selectivity rather than broad-based trends .

Currencies Poised for Strength

Currencies Facing Pressure

The opportunity set in 2026 lies less in broad-based appreciation and more in identifying economies with credible policy frameworks, improving external buffers, and durable reform momentum .

Part 6: The Investor’s Toolkit—Practical Applications

For investors navigating African currencies, several practical frameworks emerge from the academic and market analysis.

Framework 1: The Two-Track Currency Approach

Framework 2: Monitoring Leading Indicators

Framework 3: Hedging Considerations

For investors holding equity or bond positions in African markets:

1. Natural hedges: When investing in commodity-exporting countries, the same commodity price strength that boosts equity returns also strengthens the currency—a natural hedge.

2. Diversification across commodity profiles: Combining exposure to gold producers (Ghana, South Africa), copper producers (Zambia, DRC), and diversified economies (Kenya, Rwanda) can reduce single-commodity risk.

3. Time horizon matters: The academic research showing weak short-term interconnections suggests that short-term currency speculation in African markets may be less profitable than longer-term positioning aligned with commodity cycles .

Conclusion: The Commodity-Currency Nexus as Investment Discipline

The relationship between commodities and African currencies is not merely correlation—it is causation. Academic research confirms that commodities and currencies act as net transmitters of financial shocks across the continent, while equity markets respond to, rather than drive, these dynamics .

For investors, this has profound implications. An equity position in a Zambian copper miner is, to a significant degree, a bet on copper prices—and the kwacha will follow that bet. A Ghanaian bond position is a bet on gold’s safe-haven status—and the cedi will reflect that status. A Nigerian telecom holding is, indirectly, a bet on oil prices and the naira’s managed stability.

The divergence in currency fortunes across the continent in 2025–2026—kwacha up 26%, naira stable, cedi under pressure—illustrates the granularity required for successful African investing . Commodity exposure alone is insufficient; the specific commodity, the country’s policy framework, the structure of its reserves, and the depth of its reforms all matter.

As MCB Group’s analysis concluded, the opportunity set in 2026 lies in identifying economies with credible policy frameworks, improving external buffers, and durable reform momentum . For investors who can distinguish between temporary commodity windfalls and structural resilience, African currencies offer not just risk—but reward.

Quick Reference: Commodity-Currency Connections at a Glance

FAQ Section

Q1: Why do commodity prices drive African currencies so strongly?
A: For commodity-dependent African economies, exports constitute the primary source of foreign exchange earnings. The Commodity-Exchange Rate Model (CERM) demonstrates that these economies’ currencies are fundamentally driven by commodity price fluctuations rather than traditional macroeconomic factors emphasized by purchasing power parity .

Q2: Which African currency has performed best from commodity price rallies?
A: Zambia’s kwacha advanced 26% against the dollar in 2025 as copper prices smashed through $13,000 a ton—a nearly 50% increase since the start of 2025. The DRC’s franc gained almost 28% .

Q3: Why hasn’t Ghana’s cedi strengthened more despite record gold prices?
A: Ghana faces persistent pressure from oil imports, dividend repatriation by foreign investors, and structural dollar demand. Even with “official” auctions drawing more than $500 million in bids, corporate demand is going unmet, keeping the cedi under pressure despite gold’s strength .

Q4: How do oil prices affect African currencies differently?
A: Net oil importers (Kenya, Ghana) face currency pressure when oil prices rise, as fuel bills increase and trade deficits widen. Net exporters (Nigeria, Angola) can benefit from higher crude prices, though the transmission is complex and depends on broader policy frameworks .

Q5: Are African currencies good hedges against commodity volatility?
A: Academic research shows that commodities and currencies function as net transmitters of shocks, while equity markets serve as receivers. This means currency positions in commodity-dependent African economies are exposed to—not hedged against—commodity volatility .

Q6: What is the outlook for African currencies in 2026?
A: The outlook is selective. Zambia’s kwacha is well positioned to outperform on strong copper fundamentals. South Africa’s rand is expected to remain broadly stable. Ghana’s cedi faces near-term pressure, while Ethiopia’s birr is likely to remain under pressure amid unresolved structural imbalances .

Q7: How does the Dangote Refinery affect Nigeria’s currency outlook?
A: The 650,000-barrel-per-day refinery has reportedly made Nigeria a net fuel exporter of refined petroleum, reducing the country’s vulnerability to imported fuel price shocks. Plans to double capacity would further insulate the naira from global oil price volatility .

Q8: What role does investor sentiment play in currency volatility?
A: Research indicates that market sentiment partly intensifies commodity-driven currency volatility. The VIX (volatility index) amplifies the relationship between commodity prices and exchange rates, particularly during crisis periods .

Q9: Are African equity markets good predictors of currency movements?
A: No. Academic research shows that equity markets in commodity-dependent African nations are primarily shock receivers, not transmitters. Currencies and commodities lead; equities follow .

Q10: What is the best strategy for investing in African currencies?
A: Focus on economies with credible policy frameworks, improving external buffers, and durable reform momentum. Zambia (copper) and South Africa (reforms) offer favorable profiles, while countries with unresolved structural imbalances carry higher risk

Source: Accra Street Journal 

Last Updated on May 23, 2026 by Samuel Kwame Boadu

Samuel Kwame Boadu

Samuel Kwame Boadu is a Ghanaian media entrepreneur and storyteller with a passion for amplifying urban voices and uncovering everyday truths. He is the Editor-in-Chief and Founder of Accra Street Journal, a dynamic digital platform dedicated to capturing the pulse of Ghana’s capital—its people, culture, challenges, business, sports and innovations.

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