Wise Hit by Belgian Criminal AML Probe, Shares Crash 19 Percent on €500M Investigation
Belgian prosecutors have confirmed an advanced-stage criminal investigation into Wise Europe over €500 million in suspicious transactions tied to fraud, corruption and drug trafficking, sending shares down as much as 19 percent and wiping more than £1 billion from the fintech's market capitalisation.
Belgian prosecutors confirmed Monday that Wise Europe is the subject of an advanced-stage criminal investigation into anti-money laundering control failures, with more than €500 million (~$583 million) in suspicious transactions now under formal scrutiny. The Brussels Public Prosecutor's Office told reporters it is finalising a direct summons before the criminal court, triggering the steepest single-day decline in Wise shares since the company's 2021 direct listing.
Wise stock fell as much as 19.3 percent in London trading on June 1, 2026, before recovering slightly to close down roughly 13-15 percent. At the intraday low, the selloff erased more than £1 billion in market value, according to Dan Coatsworth, head of markets at AJ Bell [1]. The company's shares now trade on Nasdaq under the ticker WSE, following Wise's primary listing migration from the London Stock Exchange completed in May 2026 [2].
The Probe: Origins and Scope
The Brussels Public Prosecutor's Office opened the investigation in 2025 after Wise accounts appeared in hundreds of requests for cross-border assistance in criminal proceedings originating from investigators in more than 30 European countries, according to a statement the office provided to multiple publications [3]. The Bureau of Investigative Journalism separately reported the scale of flagged transactions, placing the total at approximately €500 million ($582.6 million) in suspected proceeds linked to fraud, corruption and drug trafficking.
Prosecutors described the findings as concerning "indications of non-compliance with anti-money laundering legislation, particularly due to a lack of proper identification of clients and their activities." The office added that the probe is also examining "whether Wise Europe's services were used by international criminal organisations." Officials characterised the investigation as "at an advanced stage but nearly complete," with a direct summons before the criminal court in preparation [3][4].
Wise's European operations are headquartered in Brussels, from where the company's Wise Europe entity serves the broader European Union market. The Belgian investigation is focused on those continental operations and is distinct from the company's UK-regulated business.
"We are currently working with the Brussels prosecutor to respond to queries about our business, as we routinely do with regulators and law-enforcement authorities. No specific findings have been shared with us to date. As such, it would be speculative for us to comment on any allegations." - Wise Group plc, June 1, 2026 [2]
Wise further stated that responding to law enforcement requests "are a normal part of operations and are not, in themselves, indicative of non-compliance with anti-money laundering requirements or of any wrongdoing." The company noted that roughly one-third of its global workforce is dedicated to financial crime prevention, and that it processes approximately 4.7 million transactions per day across more than 19 million customers worldwide [1].
Market Reaction and Capitalisation Impact
The intraday move of 19.3 percent represented the largest single-session drop for Wise shares since the company went public. By mid-morning in London, the stock had stabilised at approximately 810 pence, down 124 pence on the day, before further partial recovery. The magnitude of the selloff reflected not only the direct legal exposure but also the timing: the probe's confirmation came just weeks after Wise completed its landmark primary listing shift to Nasdaq, a move intended to broaden institutional ownership and reduce the UK-market discount on valuation [2][4].
Metric — Detail
Wise intraday share decline — -19.3% (steepest since 2021 IPO)
Wise closing share decline — -13% to -15%
Market cap erased (intraday) — More than £1 billion
Transactions under scrutiny — €500M (~$583M)
Countries sending criminal referrals — 30+ European nations
Investigation status — Advanced stage; direct court summons being finalised
Wise daily transaction volume — ~4.7 million
Wise customer base — 19M+ worldwide
A Pattern of Regulatory Friction
Monday's disclosure arrives against a backdrop of repeated AML-related regulatory actions against Wise across multiple jurisdictions. In 2022, the Abu Dhabi Global Market financial regulator fined Wise $360,000 for compliance deficiencies. In 2024, the National Bank of Belgium placed Wise under a formal KYC remediation plan after finding the company lacked proof-of-address documentation for hundreds of thousands of customers [1][3]. In 2025, six US states concluded a Bank Secrecy Act investigation, resulting in Wise paying $4.2 million to settle multi-state AML compliance violations [1].
Year — Regulator/Jurisdiction — Action — Amount
2022 — Abu Dhabi Global Market — Fine for compliance failures — $360,000
2024 — National Bank of Belgium — Formal KYC remediation plan — N/A (regulatory order)
2025 — Six US states (BSA) — Settlement for AML violations — $4.2 million
2026 — Brussels Public Prosecutor — Criminal investigation; direct court summons — TBD
In each prior case Wise stated it had subsequently addressed the relevant regulator's concerns. The current Belgian criminal probe, however, escalates the compliance narrative to a new level of severity: a direct criminal court summons carries potential corporate liability and reputational consequences that civil or administrative penalties do not.
Competitive Implications: Who Benefits
The most immediate beneficiary of Wise's reputational and regulatory distress is Revolut, which holds full banking licences in both the UK and Lithuania and has positioned its compliance infrastructure as a competitive differentiator. Revolut's banking-licensed status allows it to offer deposit insurance and a more stringent KYC framework, attributes that may accelerate customer migration from Wise in the wake of the Belgian probe. Revolut's ongoing expansion into Mexico and its broader global banking charter strategy, reported in prior NCN coverage, positions it to absorb cross-border payment volume directly [5].
In Southeast Asia and corridor-specific markets, StraitsX and PayPal stand to capture institutional and consumer flows that compliance-sensitive clients redirect away from Wise's EU platform. In the crypto remittance corridor, KAST and operators linked to Tether's remittance infrastructure present additional alternatives for users who prioritise counterparty certainty over Wise's pricing advantages.
Competitor — Key Advantage in Current Context
Revolut — Full UK and Lithuania banking licences; established KYC framework
StraitsX — MAS-regulated; Southeast Asia corridor strength
PayPal — Global brand with established AML compliance history
KAST — Crypto-native remittance alternative; growing corridor presence
The Belgian criminal investigation does not freeze Wise's operations. The company continues to process transactions and reiterated its commitment to cooperating fully with authorities. However, the combination of a criminal-stage proceeding, a finalisable court summons, and a share price that has already absorbed a double-digit shock suggests that the compliance chapter for Wise Europe is far from closed. Investors are now pricing a scenario in which the summons is issued and a formal criminal trial commences, an outcome that would represent an unprecedented legal test for a publicly traded fintech in the European payments sector.
References
[1] BBC News, "Wise under investigation over money laundering control concerns," June 1, 2026. https://www.bbc.com/news/articles/cy42x8ye02vo
[2] Proactive Investors via Yahoo Finance, "Wise tumbles after confirming contact with Brussels prosecutors," June 1, 2026. https://uk.finance.yahoo.com/news/wise-tumbles-confirming-contact-brussels-105400450.html
[3] Banking Dive, "Fintech Wise probed over AML concerns," June 2, 2026. https://www.bankingdive.com/news/wise-aml-investigation-europe/821721/
[4] Yahoo Finance / GuruFocus, "Wise Shares Drop 19% As Belgium Probe Draws Investor Focus," June 1, 2026. https://finance.yahoo.com/markets/stocks/articles/wise-shares-drop-19-belgium-142405144.html
[5] ERR News, "Estonian-founded Wise hit by Belgian money laundering investigation," June 1, 2026. https://news.err.ee/1610043616/estonian-founded-wise-hit-by-belgian-money-laundering-investigation