Crack Spreads Surge as Bank of England and Other Central Banks Flag Them as Leading Inflation Indicator
nashnova research
Bank of England Governor Bailey says he now watches the crack spread more closely than crude benchmarks — the gap between refined fuel and crude has surged to about $75 a barrel, turning it into a core inflation gauge for central banks worldwide.
What is a crack spread, and why are central banks suddenly focused on it?
A crack spread — the price of refined fuel minus unprocessed crude — widens when refining bottlenecks push up end-user fuel costs.
Bailey put it plainly: "We don't consume barrels of crude oil. We consume the processed product, and the crack spread is the wedge between the two."
This means → watching crude alone no longer captures real inflation pressure; the cost that hits consumers is locked inside the refining step.
Why has refining capacity suddenly fallen short?
The Iran war and the Russia-Ukraine conflict hit simultaneously, destroying or disrupting millions of barrels per day of global refining capacity.
Vitol Group CEO Russell Hardy estimates Middle East refined-product exports have dropped by roughly 2 million b/d; Russian exports lost to Ukrainian drone strikes on refineries total a similar 2 million b/d.
Russia has banned diesel exports outright. The Strait of Hormuz constrains refined products far more than crude — refined fuels need more individual vessels, with no dominant carrier coordinating transit.
In plain terms = crude can still move, but the factories that turn it into gasoline and diesel — and the shipping lanes that carry the products — are choked at both ends.
How far have spreads moved, and how does it reach the pump?
On September 9, European benchmark diesel futures traded at a premium of roughly $75 per barrel over Brent crude; on January 2 that premium was only about $21 — more than tripling.
Wholesale diesel has reached roughly $175 a barrel. After taxes and retail margins, European drivers pay the equivalent of over $370 a barrel at the pump.
The Bank of England estimates energy-price rises will add about 0.4 percentage points to CPI in the second half, with gasoline and diesel pump prices alone contributing roughly 0.3 points.
What are policymakers and markets doing about it?
The ECB warned in late July about inflation risk from constrained refining capacity, noting that tracking benchmark crude alone no longer captures the full rate-expectations picture.
Vanguard Asset Management is buying hedges against stickier-than-expected U.S. inflation, citing the rise in crack spreads.
President Trump has pressured U.S. refiners to boost domestic gasoline and diesel output — rising transport costs are creating political headwinds ahead of the midterm elections.
When might this round of energy inflation peak?
CNAS adjunct senior fellow Rachel Ziemba notes: refined-product prices better reflect actual pain than crude, because refined supply is tighter — and refined products are what people and businesses actually use.
This reflects a signal-level shift: central-bank inflation monitoring is moving from "watch crude" to "watch the refining bottleneck."
Whether crack spreads narrow as refining capacity recovers will be the key test of whether this energy-inflation cycle has peaked.
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