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US Inflation Accelerates to 3.4% Amid Middle East Tensions

By Markets Desk · 2026-09-12 · 2 min read
A gas pump nozzle resting on a concrete surface next to a blurred highway in the distance
Illustration: Tradingbird

The consumer price index rose 3.4% year-over-year. Gasoline prices jumped 3.9% in August. Markets now price in an 80% chance of a rate hike.

U.S. inflation accelerated to 3.4% year-over-year in August. The Labor Department reported this figure on Friday. It matches the July rate. However, the month-over-month increase spiked to 0.4%. This is four times the 0.1% rise seen in July. The acceleration stems largely from energy costs.

Gasoline prices rose 3.9% from July to August. The nationwide average reached $4.30 per gallon. This represents a 27% increase from a year earlier. Renewed conflict in the Middle East drove these spikes. Diesel prices exceeded $6 per gallon, hitting record highs. These costs impact shipping and consumer budgets.

Fed Rate Hike Expectations Surge

Wall Street investors see an 80% probability of a rate increase on September 16. This is a 10-point jump from Thursday. CME FedWatch data confirms this shift. Federal Reserve Chair Kevin Warsh indicated that disinflation must continue to hold rates steady. The August data did not provide that assurance.

Kathy Bostjancic, chief economist at Nationwide, noted the report failed to show continued disinflation. This supports the case for higher benchmark rates. Higher rates will likely increase mortgage and auto loan costs. The 10-year Treasury yield reached 4.9% on Friday. It is near a three-year high.

Broad Price Increases Beyond Fuel

Inflation extends beyond energy. Airline tickets rose 2.7% monthly. They are up 23% from a year earlier. Hotel room prices climbed 2.4% in August. Car repair costs increased 1.1% last month. These sectors show persistent upward pressure on prices.

Core inflation, excluding food and energy, rose 2.4% year-over-year. This is down from 2.5% in July. However, core prices jumped 0.3% month-over-month. This is the largest increase since April. Economists warn that high fuel costs will spill into other goods. Shipping expenses for groceries are already rising.

Political Response to Cost Pressures

The administration seeks to counter voter concerns. President Donald Trump promised $5,000 payments to adults if the GOP keeps control of Congress. This requires congressional approval. Such spending could further stoke inflation. Treasury Secretary Scott Bessent is buying back bonds to lower long-term rates.

Consumers feel the strain. Rent for a shared home rose $200 this year to $2,300. A customer service agent reported needing a raise to cover basics. Many have cut discretionary spending like dining out. The affordability crisis remains a top issue for voters. Midterm elections are seven weeks away.

Based on reporting by wgntv.com, compiled by the Tradingbird desk.

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