Global markets

The potential impact of high oil prices on economies

March 10, 2026

The ceiling for oil prices, and how long they’re high, is likely to be a matter of how long the conflict in Iran lasts. Prolonged hostilities would amplify economic effects and could further test investor resolve.

Vanguard analyses suggest that although the U.S. and global economies remain resilient, the scale and persistence of energy disruptions raise noteworthy risks for growth, inflation, and central bank decision‑making.

An analysis by Fei Xu, portfolio manager of Vanguard Commodity Strategy Fund, highlights how quickly and significantly the oil shock has taken hold.

Oil prices and premiums spike during conflicts

Line chart showing Brent crude front month prices in U.S. dollars per barrel over time, overlaid with a shaded area chart showing front contract premium or discount as a percentage. Key geopolitical events are annotated, namely the First Gulf War, Iraq War, and Russia–Ukraine war. Oil prices and risk premiums rise sharply during major conflicts before eventually subsiding.

Notes: The front contract vs. 6-month-out contract premium/discount is a market-based measure of risk premia.
Sources: Vanguard calculations, based on Bloomberg data, as of March 9, 2026.

As the chart shows, the surge in oil prices and market‑based geopolitical risk premia have moved rapidly toward levels seen during the First Gulf War in 1990 and the Russia–Ukraine conflict in 2022. At those times, prices and risk premia rose sharply, remained elevated for several months, and gradually subsided only as supply conditions stabilized.

Transportation, insurance, and storage constraints are limiting export capacity throughout the Middle East energy complex, beyond oil production. If these constraints persist similar to situations in the past, macroeconomic consequences could become increasingly challenging. “If crude oil and natural gas disruptions, and the associated uncertainty, persist similar to 1990 or 2022, the macroeconomic spillovers would become increasingly stagflationary,” Xu says. “Sustained energy price shocks could push inflation higher, tighten financial conditions, and complicate policy trade‑offs.”

Where higher-for-longer oil price effects would be felt most acutely

The costs of higher‑for‑longer oil prices would be felt most acutely in the euro area and Japan. A separate analysis shows that oil at $125 per barrel and natural gas at €150 per megawatt hour sustained for the rest of the year could trim a percentage point off euro area real GDP and drag the economy into recession.

“Sharply higher energy prices risk a stagflationary shock to the European economy,” says Shaan Raithatha, Vanguard senior economist. “Given this development, the European Central Bank may be forced to reassess its policy stance. Our bias is no longer to the downside.”

The U.S. economy’s underlying strength

The analysis, however, highlights underlying strength in the U.S. economy. To induce a U.S. recession, oil prices would need to remain at $150 per barrel the rest of the year, and there would need to be a significant tightening of financial conditions, such as weaker asset prices and higher interest rates.

The table that follows shows anticipated economic effects of higher oil prices. Our assessment relies on history as a guide and considers variables such as offsetting impacts of fiscal and monetary policy. The effect on euro area inflation would be even greater if natural gas prices were also sustained at high levels.

Europe and Japan more vulnerable than U.S. to protracted high oil prices

Table summarizing economic impacts under three scenarios—De escalation, Moderate, and Protracted—based on the duration and level of oil price increases. Columns compare scenarios by duration, oil price range, and impacts on GDP, headline inflation, and core inflation. Rows show effects for the United States, euro area, and Japan, with progressively larger GDP declines and inflation increases as the scenario becomes more prolonged. The numbers show the U.S. would be relatively insulated, with the euro area and Japan seeing more adverse impact across the board, particularly the longer and more severe the oil price increase is.

Notes: Bps stands for basis points. A basis point is one-hundredth of a percentage point.
Sources: Vanguard calculations, based on Oxford Economics and Federal Reserve data, as of March 9, 2026.

The U.S. economy is comparatively well-positioned to absorb an energy shock, especially one that is short‑lived. With household balance sheets, labor markets, and corporate fundamentals relatively strong, a de‑escalation of the conflict and a subsequent easing in oil prices could allow markets and economic activity to rebound. In that scenario, tighter financial conditions and weaker sentiment would likely unwind, limiting the risk of lasting damage and enabling a quicker snapback in growth and financial markets.

How the Federal Reserve is likely to respond

For now, continued conflict in the Middle East and high oil prices will likely tie central banks’ hands. Energy‑driven supply shocks are not something that monetary policy is designed to address, according to Josh Hirt, Vanguard senior U.S. economist. “Both sides of the Federal Reserve’s dual mandate fall under pressure,” Hirt said. “As long as it lasts, we would expect the Fed to have a bias toward inaction, although already elevated inflation will keep policymakers vigilant to potential changes in inflation expectations.”

Elevated oil prices would likely push out the timeline for rate cuts, Hirt said. Vanguard foresees just one Fed rate cut in 2026, a view that financial markets have adopted amid the conflict.

For the duration, Hirt said, investors will need to be prepared for what may lay ahead.

“Geopolitical uncertainty can pressure both stock and bond prices at the same time, even when the underlying economy is resilient,” he said. “Maintaining perspective and staying committed to a long‑term strategy is a way for investors to navigate volatility and participate in any eventual rebound.”