Authorities have accused the Commonwealth Bank of more than 53,000 contraventions of strict regulations designed to combat money laundering and terrorist financing.
The Australian Transaction Reports and Analysis Centre (AUSTRAC) announced it will begin court action against the country's largest bank over the alleged breaches.
Peter Clark, the acting head of the financial intelligence and regulatory agency, said an investigation into CBA's compliance focused particularly on its intelligent deposit machines (IDMs).
As a result, it will allege there were a staggering 53,700 breaches of the Anti-Money Laundering and Counter-Terrorism Financing (AML/CTF) Act.
Clark said CBA did not carry out any assessment of the money laundering and terrorism financing risk of IDMs before their rollout in 2012.