Inflation in the United States slowed in April after seven months of relentless gains, a tentative sign that price increases may be peaking while still imposing a financial strain on American households. Consumer prices jumped 8.3 percent last month from 12 months earlier, the US Department of Labour said Wednesday. That was below the 8.5 percent year-over-year surge in March, which was the highest rate since 1981. On a month-to-month basis, prices rose 0.3 percent from March to April, a still-elevated rate but the smallest increase in eight months. Consumer prices had spiked 1.2 percent from February to March, mostly because of a sudden jump in petrol or gas prices triggered by Russia’s invasion of Ukraine. Nationally, the price of a gallon of regular petrol has reached a record $4.40, according to the American Automobile Association, though that figure – amounting to $1.16 per litre – isn’t adjusted for inflation. The high price of oil is the main factor. US benchmark crude sold for around $100 a barrel Tuesday. Petrol had fallen to about $4.10 a gallon in April, after reaching $4.32 in March. Beyond the financial strain for households, inflation is posing a serious political problem for President Joe Biden and congressional Democrats in the midterm election season, with Republicans arguing that Biden’s $1.9 trillion financial support package last March overheated the economy by flooding it with stimulus cheques, enhanced unemployment aid and child tax credit payments. Previous signs that US inflation might be peaking didn’t last. Price increases decelerated last August and September, suggesting at the time that higher inflation might be temporary, as many economists — and officials at the US Federal Reserve — had suggested. But prices shot up again in October, prompting Fed Chair Jerome Powell to start shifting policy towards higher rates. This time, though, several factors are pointing to an inflation peak. Natural gas prices, which soared in March after Russia’s invasion of Ukraine, fell on average in April and likely slowed inflation. Used car prices are also expected to have dropped last month. Automakers’ supply chains have unravelled a bit, and new car sales have risen. While food and energy have endured some of the worst price spikes of the past year, analysts often monitor the core figure to get a sense of underlying inflation. Core inflation also typically rises more slowly than the overall price increases and can take longer to decline. Rents, for example, are rising at a historically fast pace, and there is little sign of that trend reversing anytime soon. The unexpected persistence of high inflation has caused the Fed to embark on what may become its fastest series of interest rate increases in 33 years.