Belgian Towns Cash In on Luxembourg Tax Windfall – Cross-Border Pact
In a financial arrangement that continues to bridge economic ties between Luxembourg
and its northern neighbor, Belgian municipalities received a total of €52.8 million in 2024
from the Luxembourg Treasury. The payments come under a long-standing tax
compensation agreement designed to offset revenue losses for towns where thousands
of cross-border workers reside.
The pact, often referred to as the “Martelange effect,” has been in place since 2004 and
targets the roughly 51,700 Belgian residents who work in Luxembourg and pay income
tax there. The goal is simple: share the wealth. While the workers contribute their taxes
to Luxembourg, the agreement ensures that their home communities in Belgium are not
left financially shortchanged.
Leading the pack is Arlon, which received nearly €10 million in compensation – the
highest among Belgian municipalities. Messancy, Attert, Bastogne, and Habay also saw
significant returns, each receiving between €2.4 million and €3.2 million. Notably, Saint-
Vith, located in the Liège province and outside the province of Luxembourg, earned
€1.1 million, making it the top recipient beyond the immediate border zone.
This model of fiscal cooperation is not new. The roots of tax retrocession from
Luxembourg to Belgium go back as far as 1935, when both countries agreed to
redistribute excise duties collected on alcohol. The modern extension into income tax
sharing marks a continued spirit of regional balance and solidarity in border
communities.
Meanwhile, across the border in France, calls are growing for a similar arrangement.
Local authorities in the Grand Est region argue that they, too, deserve a share of the
Luxembourg tax bounty, especially given the rising number of French-Luxembourg
cross-border commuters. However, the proposal faces stiff resistance. Neither
Luxembourg’s Ministry of Finance nor most political leaders in the Grand Est appear
willing to support such a move, at least not in the foreseeable future.
While the French push may remain stalled, the Belgian model stands as a rare example
of successful cross-border tax diplomacy; one that keeps local economies afloat while
maintaining strong ties between neighboring states.