It is a routine exercise in transparency, but the discrepancy between the rhetoric and the figures is striking. On Tuesday 21 April, speaking before MPs gathered in the Finance and Budgetary Implementation Committees, the Minister for Finance, Gilles Roth (CSV) provided a detailed overview of the state of public finances as at 31 March. A few hours later, the ministry’s press release described the trend in revenue as “generally positive”. On closer inspection, however, the picture is far less reassuring.

The government highlights an increase in government revenue, but the overall picture is less flattering. By the end of March 2026, central government revenue stood at €7.92bn, up 4.5% year-on-year. This trend is described as “generally positive” in the press release. However, the budget balance tells a different story. It has fallen to €59m, compared with €337m a year earlier and €401m in 2024. Over two years, the deterioration is clear, with a decline of nearly €340m.

The crux of the problem lies in a structural imbalance. Expenditure is rising twice as fast as revenue, up 8.6% year-on-year to €7.86bn. This budget gap alone accounts for the deterioration in the balance, yet it is not really highlighted. The “positive momentum” in expenditure mentioned in the press release actually masks growing pressure on the public finances.

Is VAT a cyclical or structural factor?

On the revenue side, the picture is mixed. Corporation tax has fallen sharply, by €161.5m (-11.8%). This is a significant sign, but there is no official explanation. Is this a calendar effect, a slowdown in profits, or simply a correction following an exceptional year? At this stage, the cause remains unclear. Conversely, VAT is driving revenue growth with a spectacular rise of 17%, or €242m. It remains to be seen whether this performance reflects robust economic activity, a price effect linked to inflation, or even a technical catch-up.

Other budget lines highlight further vulnerabilities. Tobacco revenue has fallen by nearly 16%, a significant decline for a historically key component of Luxembourg’s finances. This decline raises fundamental questions about the sustainability of this tax revenue stream, which is vulnerable to regulatory changes and cross-border purchasing patterns.

Some changes are less obvious. Luxembourg’s contribution to the European Union is reported to have doubled in the space of a year, whilst expenditure from the Military Equipment Fund is said to have almost vanished. These are significant shifts, but with no detailed explanation available at this stage, they raise questions about the budgetary trade-offs currently being made.

There is less and less room for manoeuvre

Beyond the current flows, the press release makes no mention of key structural factors. The capital budget deficit, which stands at nearly €2.8bn, and the already heavy reliance on borrowing at the start of the financial year, are not addressed. These are all indicators that are weighing on the overall trajectory of public finances.

Against this backdrop, the Chancellor of the Exchequer has urged caution. “We must remain vigilant in a more uncertain global environment,” said Gilles Roth, referring in particular to “the consequences of the conflict in the Middle East”. This was an unusual reference, suggesting concerns regarding energy or financial markets, though no specific figures were given.

Behind the measured tone, the message is clear: the situation remains under control in the short term, but room for manoeuvre is shrinking. With volatile revenue, rising expenditure and external uncertainties, Luxembourg’s budgetary outlook is becoming more complicated.