Italy annual inflation rises to 4.2% in September 2026 as energy and fuel costs surge

Energy costs push headline inflation to three-year high

Italy's annual inflation rate climbed to 4.2% in September 2026 from 3.3% in August, according to preliminary estimates released by the national statistics bureau Istat. On a monthly basis, the consumer price index for the whole collective (NIC), gross of tobacco, increased by 0.7%, exceeding preliminary market expectations of 0.3% month-on-month and 3.8% year-on-year. The September figure represents the highest year-on-year inflation reading in Italy since September 2023, when annual price growth reached 5.3%. The sharpest upward pressure came from the energy sector, where overall annual price growth accelerated from 17.1% in August to 22.3% in September.

Regulated bills and transport fuels surge

Regulated energy tariffs surged by 25.9% year-on-year in September compared to 18.6% in August, driven by a 47.2% rise in natural gas prices, which had grown by 31.0% the previous month. Unregulated energy goods advanced by 22.2% annually, up from 17.0% in August, led by steep price increases across transport and heating fuels. Diesel prices rose by 34.9% year-on-year and 6.0% month-on-month, heating gasoil climbed 38.5% year-on-year and 4.7% month-on-month, while petrol recorded a 21.8% annual increase and a 4.8% monthly rise. Food prices also contributed to the acceleration, with unprocessed food inflation quickening from 3.8% to 5.5% annually, pushing overall food price inflation from 1.0% to 1.8%. Consequently, high-frequency purchase goods climbed from 4.3% in August to 5.3% in September, while the everyday shopping basket of food, home, and personal care items rose from 0.9% to 1.7%.

Core inflation divergence and European index measures

Core inflation, which excludes energy and fresh food components, remained subdued, rising from 1.5% in August to 1.7% in September. When excluding only energy goods, core inflation moved from 1.7% to 2.0%. The divergence between goods and services prices widened further during the month, as goods prices accelerated from 4.1% to 5.4% while services grew at a more moderate pace, moving from 2.4% to 2.6%, creating a negative differential of 2.8 percentage points. The Harmonised Index of Consumer Prices (HICP) rose 2.0% month-on-month and 4.1% year-on-year, reflecting the end of seasonal summer discounts. Acquired inflation for the whole of 2026 reached 3.1% by the end of September, while acquired core inflation held steady at 1.9%.

Consumer associations calculate household burden

Consumer associations responded to the data by projecting increased annual living expenses for Italian families, with the National Consumers Union estimating an average annual increase of 1,108 euros per household, of which 445 euros is attributable to housing, electricity, and gas bills. Massimiliano Dona, president of the National Consumers Union, criticised the government's response to rising utility and fuel costs.

The lack of government intervention to contain high bills for families and businesses and the mild measure used against high fuel costs have produced their harmful effects, further inflaming the inflationary spiral that is increasingly getting out of control, turning into a blow for both lower-income groups and the increasingly struggling middle class.

Assoutenti calculated that a family with two children faces an extra 185 euros annually solely for food and beverage purchases. Opposition parties in parliament also voiced criticism, stating that corporate retail discounts were insufficient to shield household budgets.