This study examines depositor market discipline of Australian banks and its interaction with the 2008 deposit and wholesale funding guarantee. Prior to 2008 market discipline is found for Australian-incorporated banks. Depositors did not distinguish between major and small banks, but some differences in the degree of market discipline were found for foreign bank subsidiaries. Following the introduction of the 2008 guarantees, market discipline was reduced except for non-household depositors at banks that did not access the wholesale guarantee. Market discipline is also evidenced at foreign bank branches, but weaker for those accessing the wholesale guarantee.