Belgium’s Triple Economic Shock: Deficit, Indexation, and Sales Law

Belgium is confronting a confluence of economic challenges on Thursday as the European Commission releases a bleak budget forecast, parliament votes on a controversial wage indexation cap, and the Council of State delivers a landmark ruling that effectively dismantles the country’s traditional sales period system. The developments, unfolding simultaneously, underscore the fiscal and structural pressures facing the five-party Arizona coalition government.

Budget Deficit: Belgium Remains Eurozone’s Worst Performer

The European Commission’s spring forecast paints a sobering picture of Belgium’s public finances. According to HLN, the Commission projects Belgium’s budget deficit will stabilize at 5.2% of GDP in 2026 before rising again to 5.4% in 2027, making Belgium the worst performer in the eurozone alongside Slovakia.

Government debt is expected to climb from 107.9% of GDP in 2025 to 110.5% in 2026 and 112.8% in 2027. Economic growth remains tepid at 0.7% this year and 0.9% next year, both below the eurozone average of 0.9% and 1.2% respectively. The Commission cited rising energy prices linked to the Middle East conflict as a key factor behind its downward revision of growth expectations.

The stabilization in 2026 is attributed to measures taken by federal and regional governments to limit spending and increase revenue, including cuts to benefits, subsidies, and public sector wages. However, the projected rise in 2027 suggests these one-off measures are insufficient to address Belgium’s structural fiscal challenges.

The ‘Centenindex’ Vote: A Political Tightrope

As the budget news lands, parliament is voting on the so-called ‘centenindex’ (cent-index), a capped wage indexation mechanism that has become one of the most contentious elements of the government’s fiscal agenda. As VRT NWS explains, the mechanism sets a ceiling of €4,000 gross monthly salary for full-time workers and €2,000 for part-time salaries and benefits. Above these thresholds, the automatic 2% indexation will not be applied. The measure can be invoked a maximum of two times during this legislative term: once in 2026 and once in 2028.

Approximately half of all workers will be affected. The median wage in Belgium was €3,728 gross per month in 2022, while the average stood at €4,078. Professor of labor economics Stijn Baert (UGent) noted that those earning just above €4,000 will feel little difference, but cautioned that “whoever touches wages, touches people.”

Trade unions have fiercely opposed the measure. Ann Vermorgen of the ACV told VRT NWS that “more than half of workers will have to sacrifice twice” under the index reform. The ABVV called the budget agreement “one-sided,” arguing it “puts the bill on those who work and are sick, while large fortunes once again get off easy.”

The political dynamics are delicate. As RTBF reports, the capped indexation is a compromise that avoids the politically toxic “index jump” that contributed to the MR’s electoral defeat in 2019. N-VA chair Valerie Van Peel defended the measure as part of a carefully balanced budget agreement. CD&V chair Sammy Mahdi, however, has kept the door open to replacing it with an alternative proposed by the social partners—unions and employers—that would smooth energy prices in the index calculation instead. The government rejected that alternative, with the Planning Bureau estimating it would cost €242 million more than the centenindex.

RTBF’s Bertrand Henne noted that the index debate will return in July, when the government faces a budget conclave needing to find nearly €7 billion. “The subject will arrive as a guest star on the table of a government cornered by budget deficits,” he wrote.

Sales Law Ruling: A ‘Dead Letter’

In a separate but significant development, the Council of State has ruled that Belgian sales regulations are incompatible with European Union law, effectively rendering the country’s traditional January and July sales periods a thing of the past. According to HLN, the high court overturned fines imposed on three clothing chains—ZEB, Point Carré, and The Fashion Store (a Colruyt subsidiary with approximately 130 stores)—for using the term “solden” (sales) outside legally mandated periods.

While the ruling technically applies only to the specific cases, it creates a powerful precedent that makes future fines unenforceable. The Belgian sales law is now effectively a “dead letter,” as HLN consumer expert Safia Yachou explained: “From now on, it can be sales season 365 days a year in our country. But it becomes extra important for consumers to keep a close eye on prices and check whether a discount is really a good deal.”

ZEB spokesperson Erika Mees celebrated the victory after fifteen years of litigation. “From now on, it can be sales every day for ZEB,” she said, announcing that the chain will start its sales this Saturday, May 23.

Interconnected Challenges

These three stories are deeply interconnected. The budget deficit drives the need for fiscal measures like the centenindex, which in turn complicates the government’s relationship with unions and its own coalition partners. The sales law ruling adds another layer of economic disruption, affecting retail dynamics and consumer behavior. All three reflect Belgium’s constraints within the European Union framework—whether through fiscal rules, internal market regulations, or the structural challenges of a highly complex federal state.

What to Watch For

The centenindex vote is expected to pass despite opposition. Attention will then turn to the July budget conclave, where the government must find approximately €7 billion in additional savings. The social partners’ alternative index proposal may resurface as a potential addition rather than a replacement. Meanwhile, retailers across Belgium are preparing for a new era of year-round sales, and consumers will need to navigate a landscape where genuine discounts require sharper scrutiny.

Belgium’s economic path forward remains uncertain, but one thing is clear: the Arizona coalition’s ability to manage these simultaneous pressures will define its political fortunes in the months ahead.