Belgian Inflation Jumps to 4.69% as Energy Costs Soar

Belgian consumer price inflation accelerated to 4.69 percent in September, up sharply from 3.97 percent in August, as soaring energy costs tied to the war in the Middle East continued to squeeze household budgets, the national statistics office Statbel reported on Tuesday.

Energy prices rose 24.37 percent year-on-year, the highest reading of the year and up from 16.47 percent in August and 10.59 percent in July. Energy alone contributed 2.15 percentage points to the headline figure, underscoring how decisively the supply shock has reshaped Belgium’s price picture.

A Steep Climb in Three Months

The September reading caps a dramatic three-month rise. Inflation stood at 1.10 percent in January, edged up to 3.40 percent by June and has climbed steadily since — 3.56 percent in July, 3.97 percent in August and now 4.69 percent, according to VRT NWS.

Motor fuels were the single largest driver, up 33.9 percent year-on-year, with diesel bearing the steepest increase at 44.1 percent. Petrol rose 29.4 percent and LPG 21.2 percent, Statbel data show. Natural gas climbed 34.9 percent over the year, while heating oil was up 20 percent and electricity 13.1 percent.

Month-on-month, the pressure remains intense: natural gas rose 6.9 percent from August, heating oil 7.1 percent, motor fuels 6.5 percent and electricity 4.2 percent.

Food Prices Fall, but the Squeeze Persists

Unusually, food inflation turned negative in September, at -0.28 percent, compared with +0.36 percent in August. Airfares, meat and both alcoholic and non-alcoholic drinks also exerted downward pressure on the index. Fresh berries, other fresh fruit and vegetables, non-dairy milk, grains and consumer electronics all became cheaper year-on-year.

Core inflation — which excludes energy products and unprocessed food — was far more stable at 3.00 percent, up only marginally from 2.99 percent in August. The cost-of-living squeeze, in other words, is being driven almost entirely by the “Housing, water and energy” group, which contributed 0.95 percentage points to the index, rather than by groceries.

The Energy Shock Behind the Numbers

The acceleration is directly linked to the war in the Middle East. Following Iranian attacks on Qatar’s Ras Laffan gas complex — which accounts for roughly one-fifth of global LNG production — and disruption around the Strait of Hormuz, European gas prices spiked. Analysts at the logistics publication Flows noted in March that Belgium is among the hardest-hit European countries, because the port of Zeebrugge is a key LNG import gateway and the country hosts a large energy-intensive industrial base.

The timing of the shock was visible earlier in the year. In April, inflation leapt from 1.65 percent in March to 4.01 percent, driven by higher energy costs, according to VRT NWS. That month, Statbel initially withheld the figure after the index committee failed to reach consensus, before the economy minister intervened to allow publication.

Purchasing Power at Risk

The headline number understates the pressure many households feel, because Belgian wages and benefits are indexed to the “health index”, which deliberately excludes alcohol, tobacco, petrol and diesel. Health-index inflation rose to 4.00 percent in September, materially below the 4.69 percent headline rate.

“Our wages follow the health index, in which we exclude unhealthy products like alcohol, tobacco, petrol and diesel. But that health index sits at ‘only’ 4 percent,” said Stijn Baert, professor of economics at Ghent University and a member of the index committee. “If this continues, our wages will be adjusted less than the cost of living rises for an average family. Then we really do lose purchasing power.”

The gap is compounded by wage moderation. From September, Belgium’s so-called “centenindex” cap applies for the first time, limiting the automatic 2 percent indexation to gross wages up to 4,000 euros per month and social benefits up to 2,000 euros per month, reducing how much of the inflation passes through to incomes.

The Federal Planning Bureau has forecast average inflation of 3.6 percent for 2026 and 3.4 percent for 2027, and expects further pivot-index breaches in December 2026 and July 2027. For now, the September figures offer little relief: the EU-harmonised HICP flash estimate stood at 4.6 percent, and the consumer price index itself rose 0.41 points, or 0.39 percent, from August to 104.42 points.

What to Watch

The coming months will hinge on two variables: whether the Middle East supply disruption eases, and whether the gap between headline and health-index inflation widens further. Each additional pivot-index crossing pushes more wages and benefits upward — but under the new moderation cap, increasingly only for some. For Belgian households already absorbing a 34.9 percent jump in gas bills, the purchasing-power question is no longer abstract.