Commonwealth Bank has gone part of the way to reducing its exposure to money laundering activity after reducing the daily limit on the amount of cash that personal customers can deposit in its national fleet of intelligent deposit machines.From today, there will be a daily limit of A$20,000 that personal customers will be able to deposit in a CBA deposit machine.Previously, there was no daily cap, with retail depositors restricted only in the quantity of notes they could place in the machines per transaction. Despite the changes, CBA remains the only bank that allows personal customers to make ATM deposits above the $10,000 transaction threshold that are required to be reported to the anti-money laundering regulator, Austrac.The other major banks each have ATM deposit limits below $10,000 per transaction.This means CBA remains more exposed to compliance risks than its rivals in terms of the volume of ATM-related deposit transactions it must report to Austrac.However, it could be argued that ANZ, NAB and Westpac may each have greater exposure than CBA to compliance risks for reporting structured transactional activity of money launderers.The bank said in a statement issued last night that the new measure was part of its ongoing "program of action" to identify, mitigate and manage risk associated with financial crime."The change is another important step in the management of money laundering risks," CBA said."It strikes a balance between addressing our obligation and commitment to prevent financial crime and meeting our customers' legitimate banking needs."Curiously, the bank has not imposed any daily deposit cap on business customers using its ATMs.Businesspeople with CBA-issued debit cards will be able to deposit as much cash as they like through the automatic tellers subject only to the 200 note restriction on each transaction.However, a bank spokesman described the new limits on personal account holders as only "the first step" to strengthening CBA's money laundering compliance framework.