Inflation in African economies looks superficially like inflation everywhere — a CPI index that goes up over time. But the composition is meaningfully different, and the policy response that works in the US often misses the mark here.
The composition matters
Food and fuel typically account for 50-70% of African CPI baskets — far higher than 25-35% in most developed economies. This is because households spend a much larger share of income on these necessities. The implication: a global commodity shock matters a lot more for headline inflation here than there.
Imported inflation and pass-through
When the local currency depreciates, the prices of imported goods (refined fuel, wheat, electronics, machinery) rise in local currency. The speed and magnitude with which exchange-rate moves feed into consumer prices is called pass-through. African pass-through is typically 30-60% within 6-12 months — much higher than the 10-20% you see in advanced economies. That's why managing the currency matters so much for inflation.
Core inflation and the limits of monetary policy
Most central banks distinguish between headline inflation (the full basket) and core inflation (excluding food and energy, which are seen as volatile and outside the central bank's control). The textbook argument: target core, because that's what monetary policy can actually influence.
Why core matters less in Africa
If 60% of your CPI basket is food and fuel, focusing only on core means ignoring most of what households actually experience as inflation. African central banks tend to look at both — and often have to acknowledge that they cannot fully tame imported inflation, only manage second-round effects.
Decomposing inflation — a useful mental model
- Imported inflation — driven by exchange rate and global commodity prices
- Food inflation — driven by domestic agricultural conditions, transport costs, and imported fertilizer/fuel
- Administered prices — fuel, electricity, water, transport fares set or controlled by government
- Core/services inflation — wages, rent, services; the part most responsive to monetary policy
When you read an inflation print, decompose it. Headline up 9% with food contributing 5pp, fuel 2pp, and core 2pp is a different policy problem from headline up 9% with core contributing 6pp.
Second-round effects
Even imported inflation eventually affects core if it's persistent — workers demand higher wages, businesses raise prices, expectations un-anchor. Central banks fear second-round effects more than the initial shock, because second-round inflation is much harder to dislodge once it sets in. This is why central banks sometimes hike rates aggressively in response to a 'supply shock' that monetary policy cannot directly address — they're trying to prevent second-round dynamics.
Recent African inflation episodes
2022-23 saw inflation surge across Africa due to (1) global food and energy prices post-Ukraine, (2) currency depreciation as the Fed hiked rates, (3) domestic shocks like Kenya's drought. Ghana, Egypt, Nigeria, Zimbabwe, and Sudan all experienced inflation rates that broke from the previous decade's relative stability. Central banks responded with aggressive hikes — often too late to prevent second-round effects, but enough to eventually bring expectations back.
Exercise
If a country's CPI basket is 35% food, 15% fuel, 10% administered prices, and 40% core, and respective inflation rates are 12%, 18%, 8%, and 5%, what's the headline inflation rate and which component contributes most?