The broader commodity shock is doing more than irritating drivers. Brent crude briefly approached $120 a barrel in the early days of the conflict and has hovered above $100 since, still more than 50% higher than a month before the war began, according to the IMF as reported by Reuters on March 19. The same Reuters report said the conflict disrupted seaborne oil and natural gas shipments, while the Strait of Hormuz, which handles about 20% of the world’s crude flows, was closed by Iranian counter-attacks.

That matters because gasoline is only the first bill to move. The OECD said disruptions through Hormuz and damage to energy infrastructure have already hit oil and other critical commodities such as fertilizers, Business Insider reported on March 26. Fertilizer is not a household purchase in the way gasoline is, but it shows how a supply shock can creep into grocery costs, freight bills, and eventually the mood of people who are not trying to price out ammonia over breakfast.

The March survey was broad-based in the wrong direction. Consumers across incomes, age groups, and political affiliations reported weaker expectations for their personal finances, down 7.5% nationally, Reuters reported. Trading Economics added that middle- and higher-income households, along with those holding stock wealth, saw some of the steepest declines. This was not only an energy-burden story for lower-income households. It was a wider reappraisal of risk.

There was already a gap between sentiment and spending before the war showed up in the data. The Federal Reserve said in its June 2025 Monetary Policy Report that consumer spending had been “more resilient than measures of consumer sentiment would suggest,” a pattern it said had held since the pandemic, Federal Reserve noted in June 2025. Surveys can sour fast. Checkout lines usually move at a less dramatic pace.

Still, the consumer was not starting from strength. The Fed said real consumer spending growth slowed to around 1% in the first quarter of 2025 after running at about 3% in 2023 and 2024, Federal Reserve reported. So the war shock landed on a household already moving more carefully, not one charging ahead.

There is not yet March 2026 retail sales or card-spending data to show people have actually cut back. That matters. The honest reading is that the Michigan survey is an early warning system, not a receipt.

The inflation expectations data deserves the same caution. In the preliminary March survey, year-ahead inflation expectations were unchanged at 3.4%, while five-year expectations edged down to 3.2% from 3.3%, Reuters reported. The final revision, though, pushed year-ahead expectations to 3.8%, the largest monthly increase since April 2025, according to Trading Economics on March 13.

That does not look like a full reset of long-term inflation psychology. It looks more like households reacting to gasoline and near-term prices while the longer horizon remains a little steadier. Central bankers care a great deal about that distinction, because one version fades and the other lingers.

What to watch next is straightforward:

• March retail sales, especially discretionary categories
• April sentiment readings, to see whether the shock fades
• one-year inflation expectations, if they keep climbing

If spending holds up, this stays a confidence story. If it weakens, the gas-price spike will have become something more expensive than a bad mood.

The policy backdrop is not exactly soothing. The OECD raised its 2026 U.S. inflation forecast to 4.6%, sharply above the Federal Reserve’s 2.7% estimate, and tied the revision to the energy shock, Business Insider reported on March 26. The IMF’s rule of thumb, cited by Reuters on March 19, is that a sustained 10% rise in energy prices adds about 40 basis points to global inflation and trims output by 0.1% to 0.2%.

The current move is much larger than that benchmark. Energy prices have risen more than 50% over the last month, with Brent over $100 a barrel, Reuters reported. That does not translate into a neat U.S.-specific forecast, but the direction is obvious enough.

The Fed’s bind is simple to describe and awkward to solve. New York Fed President John Williams said the conflict could raise inflation and slow growth at the same time, pulling the central bank’s two mandates in opposite directions, Reuters reported on March 3. If energy keeps headline inflation elevated, rate cuts get pushed back. That is not much comfort to borrowers hoping for relief.

Markets adjusted quickly. Rate futures put about a 40% probability on a June cut and around 60% by July, down from more than 70% in the days before, Reuters reported. Households do not need to watch Fed funds futures to feel the consequence. They just notice that loans, cards, and other borrowing costs do not get any friendlier while confidence is eroding.

The OECD also sketched what governments can do: subsidies, tax reductions, and price caps to support households and businesses during energy spikes, Business Insider reported. But it also warned that such measures should be temporary and well targeted, because public finances are already strained by high debt and spending. There is some room for cushioning, but not much room for improvisation.

The March Michigan data looks like a fast-moving confidence shock, not a confirmed spending collapse. The before-and-after split inside the survey is unusually clean: sentiment improved before the strikes, then the nine post-strike days erased those gains, Reuters reported. The war’s effect is easy to see and hard to dismiss.

What would change the story is simple. If March retail sales show weakness in discretionary categories, if April sentiment falls again rather than stabilizing, and if one-year inflation expectations remain elevated, then the case for consumer retrenchment gets much stronger. That would mean households are not just saying they feel poorer after a gas spike, they are acting like it.

If those data do not crack, this will remain what it first looked like, a sharp but contained confidence shock. That may still be unpleasant. It just will not be the start of a broader consumer pullback, and for now that distinction is doing a lot of work.