Monzo cofounder's Monaco private bank Moncrief fined €1M over seven AML breaches

Moncrief Private Bank (Monaco) S.A.M. is co-owned by Jason Bates, one of the five cofounders of Monzo, the UK app-only bank whose brand was built on being the opposite of an opaque, paperwork-heavy institution. Monaco's financial regulator, the Autorité Monégasque de Sécurité Financière, fined the bank €1 million on June 30, 2026 after its Sanctions Committee upheld seven separate anti-money-laundering breaches; Bates is contesting the sanction through a formal legal challenge.

The AMSF's on-site inspection between July and September 2024 found an understated risk assessment, weak due diligence, inadequate beneficial-ownership checks, poor transaction monitoring, and an under-staffed compliance function. Three of those failings repeated deficiencies the bank was reprimanded for in 2021 under its previous ownership as Banque Havilland (Monaco) — the Monégasque arm of a Luxembourg private bank that lost its licence in August 2024, was fined €4 million in 2018 for money-laundering breaches, and had drawn scrutiny over an alleged Qatar destabilisation scheme.

Bates, Ukrainian fintech investor Maksym Koretskiy and longtime Monaco resident Jim McColl acquired the subsidiary in 2025 and renamed it Moncrief, pitching a turnaround: experienced fintech operators cleaning up a bank regulators had already marked as a problem. The inspection that produced the findings predates their takeover, which is the basis of the appeal — but the Sanctions Committee's ruling landed on the renamed entity, and the new owners had roughly two years between acquisition talks and the final ruling to fix what regulators already knew was broken.

A €1 million AMSF fine upheld June 30, 2026, plus the cost of a formal legal challenge, with three repeat breaches on the record

The bank carried forward a compliance function that had already been flagged in 2021 for the same categories of failure, and the 2024 inspection found it still under-resourced.

Private banking for the ultra-wealthy runs on discretion, the opposite of Monzo's transparency playbook, and beneficial-ownership weakness is precisely the mechanism that lets dirty money move.

The buyers appear to have underpriced the regulatory record they inherited: the fine attached to the entity, not to the people who caused the original breaches.

Buying a licensed bank buys its regulatory history too: a rename and new owners do not reset a compliance record, and repeat findings turn a cleanup story into a liability.

Bates is fighting the sanction in a formal legal challenge, testing whether a bank's rename can be separated from its regulatory record. Startup Fortune notes the fine landed over a year after the new owners took control, and that whether Moncrief actually fixed the flagged failures in that window is the question its appeal must answer.