How oil price shocks hit inflation and rates as Brent tops $113

Oil price shocks hit inflation in two waves. Fuel prices change within weeks. Second-round effects on food, services and wages follow more slowly. Central banks mostly react to the second wave. Brent settled at $113.17 on October 22, its highest close since early May.

Data as of: Brent and WTI futures settlements on October 22, 2026 (Bloomberg via Rigzone; CNBC). Consumer price data: US CPI for September 2026 (BLS, released October 14). Historical prices: EIA monthly Brent spot averages.

Key takeaways

• Brent crude rose 4% to settle at $113.17 a barrel on October 22, and WTI rose 2.4% to $99.47, after attacks in Saudi Arabia raised supply fears, Bloomberg reported.
• Oil reaches consumers fastest through fuel. An ECB study found pass-through to pump prices of up to 90% within five weeks.
• Research from the IMF and Federal Reserve staff puts the effect of a 10% oil rise at about 0.4 percentage point on headline inflation. Only about 0.1 point reaches core inflation.
• In the US, headline CPI inflation was 3.7% in September, while core inflation was 2.6%. The difference comes mostly from energy.
• Central banks can "look through" small, short-lived supply shocks. They act when the shock lasts, spreads to wages and services, or threatens inflation expectations.

How oil price shocks hit inflation: the direct fuel effect

The first channel is mechanical. Crude oil is the main input for gasoline, diesel, jet fuel and heating oil. These products are in the consumer price basket, so a higher crude price raises measured inflation almost immediately.

The effect is fast because fuel prices are reset daily or weekly. In a 2018 Economic Bulletin box, the European Central Bank found that the pass-through of oil price changes to liquid fuel prices was almost complete within five weeks. Gas and electricity prices react much more slowly, often over one to two years. That reflects regulated tariffs, longer contracts and a different mix of fuels.

Taxes soften the percentage effect. The same ECB box noted that taxes make up roughly half or more of the pump price of petrol in euro area countries. A fixed per-litre tax does not rise with crude, so a 10% jump in crude produces a smaller percentage rise at the pump. That is one reason the same oil shock moves inflation by different amounts in different countries.

The US is seeing this channel now. The Bureau of Labor Statistics reported that the CPI energy index was up 20.4% over the 12 months to September 2026, and gasoline was up 34.2%. Gasoline accounted for more than half of the monthly rise in the all-items index.

Second-round effects: from fuel to wages and services

The second channel is slower and matters more for interest rates. Firms that use fuel, such as airlines, haulers, farms and chemical makers, see costs rise. Some pass those costs on to customers. If workers then demand higher pay to make up for lost purchasing power, and firms raise prices again, inflation can feed on itself. Economists call these second-round effects.

Early signs of the indirect channel are already in the US data. Airline fares were 22.4% higher in September than a year earlier, according to the BLS. That is far more than the rise in overall prices.

The evidence suggests second-round effects are usually modest. A December 2023 FEDS Note by Federal Reserve Board economists studied 27 advanced economies from 2000 to 2022. A permanent 10% rise in oil prices raised energy consumer prices by about 2.3% after two quarters. It added about 0.3% to food prices and about 0.1% to core prices. The second-round part peaked at almost 0.15 percentage point of headline inflation and built up over about eight quarters.

The type of shock also matters. The same note found significant second-round effects from supply-driven shocks. It found no significant pass-through to food or core prices from shocks driven by demand specific to the oil market.

Pass-through estimates: what the research says

Sources: ECB, IMF and Federal Reserve Board publications listed under Sources. The estimates use different methods and samples and should not be added together.

The IMF paper also found that rises in oil prices have larger effects than falls. It found that the effect on inflation has become smaller over time, in part because monetary policy has improved.

Headline vs core inflation: why the split matters

Headline inflation measures everything in the basket, including food and energy. Core inflation excludes those two volatile groups. Central banks watch core inflation because it shows better where prices are heading over the next year or two.

US September data show the split clearly. All-items CPI rose 3.7% over the year, but core CPI rose only 2.6%, the BLS said. A wide gap like this means the inflation is mostly an energy story for now. If core starts to rise toward headline, the shock is spreading.

Markets track a third measure: inflation expectations. Yahoo Finance reported on October 22 that the five-year breakeven rate, the yield gap between regular Treasurys and inflation-protected TIPS, implied average inflation of about 2.4% a year. It added that the rate was unchanged from before the war with Iran began in late February, even though Brent had risen more than 50%.

Why central banks sometimes "look through" supply shocks

An oil supply shock leaves central banks with a difficult choice. It pushes prices up and growth down at the same time. Raising rates fights the first problem but makes the second worse. Ben Bernanke, a former Fed chair, wrote in 2004 that monetary policy cannot offset both effects at once, according to the Federal Reserve History essay on the 1973–74 oil shock.

Timing is the second reason. Rate changes take many months to affect demand. By the time a hike works, a short spike in oil may already have reversed. ECB President Christine Lagarde said this directly in a speech in Frankfurt on March 25, 2026. "Small, one-off and short-lived supply shocks can be looked through," she said. She added that a policy response would otherwise arrive too late and could make things worse.

Looking through has limits. Lagarde said the case for action becomes stronger as expected deviations from the inflation target grow larger and more persistent. She said pass-through is non-linear: large shocks have disproportionately strong effects, especially when unemployment is low and inflation is already high. In her words, broad pass-through from energy in the euro area has been "the exception rather than the rule."

The Fed is now weighing the same choice. After a quarter-point hike in September, its target range is 3.75%–4.00%, as Bullquill reported. Bloomberg data cited by Yahoo Finance on October 22 put the market-implied chance of another hike at the October 27–28 meeting at about 5%. The chance of a hike by December was roughly 75%.

Historical oil shocks: 1973, 1990, 2008, 2022

1973–74. The price of oil nearly quadrupled within a few months. Wholesale prices were already rising quickly and factories were running near capacity. At the time, many policymakers believed this kind of cost-driven inflation was beyond the reach of monetary policy. The episode became the textbook case of stagflation.

1990. Brent roughly doubled after Iraq invaded Kuwait. The US entered a recession that began in July 1990. Prices fell back quickly once the risk to supply eased.

2008. The price spike came during strong global demand and ended with the global financial crisis. Brent's monthly average fell by about 70% in five months. The inflation boost reversed as the economy weakened.

2022. The oil shock came on top of a gas crisis in Europe and already high inflation. Lagarde noted that euro area headline inflation was above 5% when the 2022 shock began, compared with 1.9% in February 2026. Both the Fed and the ECB raised rates sharply, because second-round effects were a real risk in tight labour markets.

Research by Olivier Blanchard and Jordi Galí found that oil shocks in the 2000s did much less damage than those of the 1970s. They tested four explanations: good luck, a smaller oil share in production, more flexible labour markets and better monetary policy. Their conclusion was that all four played an important role.

What it means

Analysis. Researchers can measure the direct effect of oil on inflation fairly well. Second-round effects are harder to predict. Those effects depend on how long high prices last, how tight the labour market is, and whether households and firms come to expect more inflation. A one-quarter spike usually stays mostly within energy prices. A shock that lasts for many months, as in 2026, gives fuel costs time to reach airfares, freight and wages.

For readers following the data, three indicators show whether the shock is spreading: the gap between headline and core inflation, the prices of energy-intensive services such as air travel, and market-based inflation expectations such as breakeven rates. In the latest US figures, the gap between headline and core inflation is still wide, airfares are rising fast and breakevens have barely moved. Those signals point in different directions. That is why the debate over whether to raise rates again is unresolved. The next tests are the US PCE report on October 29 and the October CPI on November 10.

Related coverage: the Fed's October rate-hike debate explained, our latest oil daily brief, UK inflation rises to 3.5% in September, the RBA's worsening inflation outlook and Valero's record refining margins.

Sources

• Bloomberg via Rigzone: Oil surges 4% after deadly Saudi attacks (Oct. 22, 2026)
• CNBC: Oil prices today, WTI and Brent (Oct. 22, 2026)
• Yahoo Finance: Bond traders are backing off Fed rate hike bets (Oct. 22, 2026)
• US Bureau of Labor Statistics: Consumer Price Index, September 2026
• US Energy Information Administration: Europe Brent spot price, monthly
• ECB Economic Bulletin 7/2018: The role of energy prices in recent inflation outcomes
• ECB Monthly Bulletin, February 2006: box on oil prices and euro area inflation
• IMF Working Paper 17/196: Oil Prices and Inflation Dynamics
• Federal Reserve Board FEDS Notes: Second-Round Effects of Oil Prices on Inflation in the Advanced Foreign Economies (Dec. 2023)
• Federal Reserve Board FEDS Notes: Oil Price Pass-Through into Core Inflation (Oct. 2017)
• Christine Lagarde: Navigating energy shocks, risks and policy responses (BIS central bankers' speeches, March 2026)
• Federal Reserve History: Oil Shock of 1973–74
• Blanchard and Galí: The Macroeconomic Effects of Oil Price Shocks, Why Are the 2000s So Different from the 1970s? (2007)

This article is for information only and is not investment advice.