Belgian Inflation Rises to 3.8%, Highest Among Neighboring Countries

Belgium’s inflation rate climbed to 3.8% in the second quarter of 2026, the highest among its main neighboring countries, according to the Observatoire des prix (Price Observatory) of the SPF Économie, published Thursday. The acceleration, driven by a surge in energy prices following the Middle East conflict, places Belgium well ahead of the Netherlands (2.8%), Germany (2.6%), and France (2.4%), as reported by RTBF.

Context: A Sharp Rebound After a Slow Start to the Year

The second-quarter figure marks a significant reversal from the first quarter, when inflation had slowed considerably. The rebound was fueled primarily by the energy price surge that began in March, following the outbreak of the Middle East conflict and the near-closure of the Strait of Hormuz—a critical chokepoint through which approximately 20% of global hydrocarbons transited before the war, as France 24 reported.

Food inflation, by contrast, continued to ease, falling to 1.4% in the second quarter. Core inflation—which excludes energy and unprocessed food prices—rose from 2.4% in the first quarter to 2.9% in the second, also surpassing the rates recorded in Belgium’s three main neighbors.

Why Belgian Inflation Outpaces Its Neighbors

The gap between Belgian inflation and that of neighboring countries stems from two key factors, according to an analysis by Degand Partners.

First, Belgian households have a structurally higher energy consumption than the European average, particularly due to intensive car usage. This amplifies the impact of energy price changes on the national index.

Second, and more significantly, Belgium’s consumer price index is calculated based on prices applying to new energy supply contracts. This methodology makes the index particularly reactive to recent energy price changes. As Philippe Ledent, economist at ING, explained: “The price index in Belgium is more reactive because it is calculated as if everyone renewed their energy supply contract every month.” He added that “automatic indexation is boosted by this greater reactivity to energy prices.”

This methodological difference means that when energy prices rise, the Belgian index captures almost the full increase, while other countries’ methodologies may smooth these effects.

The Middle East Conflict and the Energy Shock

The war against Iran, launched on February 28 by Israel and the United States, triggered what the International Energy Agency described as the most severe oil shock in history. Iran’s closure of the Strait of Hormuz sent oil prices up 40-50%, peaking at $126.41 per barrel in late April. The conflict also caused a 50% rise in European gas prices and deprived Europe of 15% of its LNG imports.

Belgian inflation responded sharply: after sitting at just 1.65% in March, it jumped to 4.00% in April and peaked at 4.08% in May before easing slightly to 3.40% in June. According to the latest Statbel data reported by RTBF, inflation rose again in July to 3.56%, with energy prices continuing to weigh on the index.

Automatic Wage Indexation and the ECB Response

The higher inflation has triggered Belgium’s unique automatic wage indexation system. The index pivot was exceeded in June, meaning more than 2 million workers and civil servants will receive automatic wage indexation during the summer, as RTBF reported. A new capped indexation mechanism—introduced under the Arizona coalition government’s November 2025 budget agreement—limits the 2% indexation to the first €4,000 gross per month for salaries and €2,000 for social benefits, with the indexation of public sector salaries and benefits confirmed for September, according to RTBF.

The European Central Bank has also responded to the inflationary pressures. On June 11, the ECB raised its key interest rates by 0.25 percentage points—the first increase since July 2025—bringing the deposit rate to 2.25%, as RTBF reported. The ECB now forecasts eurozone inflation to accelerate to 3% in 2026, up from its previous estimate of 2.6%.

Outlook and Implications

The Federal Planning Bureau forecasts average inflation of 3.1% for 2026 and 2.7% for 2027, according to its latest projections. However, the reactive nature of Belgium’s inflation methodology means the country remains exposed to energy price volatility. A reform of the CPI methodology is planned for 2027, with employer groups pushing for earlier implementation.

For Belgian households, the persistent gap between domestic inflation and that of neighboring countries raises concerns about purchasing power and competitiveness. The combination of energy price pressures, automatic wage indexation, and the ECB’s monetary tightening will continue to shape the economic landscape in the months ahead. As the Observatoire des prix report makes clear, Belgium’s inflation trajectory remains closely tied to the volatile energy markets and the geopolitical tensions that continue to roil the Middle East.