Belgian prosecutors near the end of a money-laundering probe into Wise

What happened

The Brussels prosecutors’ office is close to concluding a money-laundering investigation into Wise Europe, the Belgium-based arm of the money-transfer firm Wise, according to reporting published on 1 June 2026 by The Bureau of Investigative Journalism and matched by Bloomberg and Euronews. Prosecutors are examining whether criminal groups used Wise accounts to launder the proceeds of fraud, corruption, and drug trafficking.

The office opened the case the previous year after Wise accounts appeared in hundreds of requests for legal assistance from authorities in other countries. The Bureau reported requests from more than 30 countries and transactions of concern totaling around 500 million euros. The prosecutor’s stated concern, as reported by Euronews, is “indications of non-compliance with anti-money laundering legislation, particularly due to a failure to identify customers and their activities.”

Investigators are finalizing a direct summons that would send the case to criminal court, and plan to refer their findings to the National Bank of Belgium, which licenses and supervises Wise Europe. Wise shares fell close to 15 percent on the day of the report. Wise said “no specific findings have been shared with us to date” and that such requests “are not, in themselves, indicative of non-compliance with anti-money laundering requirements or of any wrongdoing.” No charges have been filed and no finding of wrongdoing has been made.

Why it matters

The detection signal here is worth sitting with. The trigger was not a single suspicious transaction. It was the repeated appearance of one provider’s accounts in other countries’ criminal files, a pattern only visible from the outside. Your own monitoring is not the only place your name can surface, and mutual legal assistance traffic is itself an intelligence source a regulator can read.

The alleged failure, as described, is foundational rather than exotic: identifying customers and understanding their activity. For a high-volume cross-border payments model, the analytical question is whether onboarding and ongoing due diligence kept pace with growth. Wise processed $243 billion in cross-border transactions in its 2026 financial year. Controls that were adequate at a smaller scale do not automatically hold at that one.

Practitioner angle

• If you run a payments or e-money business, pull your own count of inbound law-enforcement and mutual legal assistance requests by jurisdiction. A rising or clustered pattern is a control signal, not just a fulfilment task.
• Pressure-test customer identification and ongoing due diligence against your current transaction volumes, not the volumes you onboarded at. Ask where verification depth has thinned as you scaled.
• Confirm someone owns the link between law-enforcement request volume and your suspicious activity reports (SARs), so external signals feed back into monitoring.
• Watch for the National Bank of Belgium’s supervisory response, which will matter to any firm passported into the EU.

The single most important step: reconcile the law-enforcement requests you have received against the SARs you have filed, and explain any gap before someone else asks you to.