The Inflation Aftershock
Cheaper oil\. Costlier living\.
The next inflation mistake may begin with a correct observation.
Oil prices can decline in 2027.
The mistake is to assume that the cost of living must therefore return quickly to where it was before the shock.
The World Bank’s October 2026 Commodity Markets Outlook describes a global economy moving through a violent repricing of energy, food, metals and agricultural inputs. Its baseline forecast has Brent crude falling from an average of $91 a barrel in 2026 to $79 in 2027.
That sounds disinflationary. It is, at the margin.
But $79 would still be roughly 14% above the $69 average recorded in 2025. Food commodity prices are projected to rise by about 10% in 2026 and another 7% in 2027. Fertiliser, freight, insurance, inventories, exchange rates and retail contracts transmit with different delays.
The result is an inflation aftershock: the original energy surge can fade while the higher cost base continues to travel through the economy.
The distinction matters for consumers, central banks, banks, companies and governments. A lower rate of increase is not a return to the previous price level. A falling oil price is not the same thing as falling living costs. And a global commodity index is not the same thing as the basket faced by an individual household.
The arithmetic that markets prefer to ignore
The World Bank expects its broad commodity price index to rise by 23% in 2026 and decline by 7% in 2027.
The second number will attract the optimistic headline. The cumulative result tells a different story.