Advanced economies have largely tamed the 2021–23 inflation surge. But across the developing world, the inflation picture in late 2026 is far more uneven — ranging from well-managed transitions back to target (Brazil, South Africa, India) to ongoing crises (Turkey, Argentina, Ethiopia). Understanding why requires looking at three structural factors: central bank credibility, food basket weights, and currency management.
The credibility gap
The single largest predictor of EM inflation outcomes is whether the central bank is genuinely independent and credible. Brazil's Banco Central do Brasil (BCB) raised rates aggressively to 13.75% in 2022–23, anchoring inflation expectations and enabling a controlled decline. Brazil's CPI was 4.8% in October 2026 — above target but on a downward path. South Africa's SARB, similarly credible and independent, achieved 3.8% — within its 3–6% target band.
Turkey's case is the starkest counterexample. Years of political interference in central bank decisions — including President Erdoğan's insistence on cutting rates when inflation was rising — destroyed institutional credibility. When Turkey eventually reversed course and appointed orthodox monetary policymakers in 2023, the TCMB raised rates from 8.5% to 45%. Inflation peaked at 85% and has fallen to 48% — progress, but still an order of magnitude above target. The IMF Turkey Article IV estimates that rebuilding full credibility will take at least 3–5 years of consistent policy.
Food basket weights: the lower-income amplifier
In most advanced economies, food accounts for 10–18% of the CPI basket. In India, food is ~46% of CPI. In Nigeria and Ethiopia, it can exceed 55%. When global food commodity prices spike — as they did in 2021–22 following the Russia-Ukraine war — the impact on EM inflation is dramatically larger than on advanced economy CPI. This is a structural asymmetry: EM countries face the same global commodity shocks but feel them 3–4x harder in their inflation statistics. Our India inflation analysis explores this in detail.
The FAO Food Price Index has moderated from its 2022 peak, helping countries like India and Indonesia bring food inflation down. But climate-related food supply shocks remain a persistent upside risk for high-food-weight economies.
Currency and the imported inflation channel
Most EMs that struggled with high inflation in 2022–26 also experienced significant currency depreciation. The mechanism is exchange rate pass-through: a weaker currency raises the local-currency cost of imported goods (energy, food, machinery), which feeds directly into CPI. Countries with strong foreign exchange reserves and credible central banks were able to defend their currencies and limit pass-through. Countries with depleted reserves and weak institutions experienced a feedback loop: inflation → currency depreciation → more inflation.
Mexico is an instructive middle case. The peso was relatively stable in 2024–26, and Banxico's credible independent policy kept CPI at 4.2% in October 2026 — near its 3% target. Compare this with Argentina, where exchange controls created multiple parallel exchange rates, making official CPI statistics unreliable. The World Bank WDI data used in our inflation explorer covers 180+ countries for long-run comparison.