In this study, we investigate the relationship between credit ratings and audit opinions of financially distressed companies impending bankruptcy. Using Korean publicly-held firms for the years 2007 through 2014, we analyze 97 bankrupt companies with credit rating available before they file bankruptcy. Following prior research (Geiger et al., 2005), we find that the propensity to issue a going concern audit opinion is associated with the credit score issued by NICE immediately prior to the audit opinion date. We also compare credit ratings to audit opinions to investigate which of the two is more conservative and provides the earlier signal of bankruptcy. Through empirical test, we can conclude that audit system has more successfully predictive function in signaling preceding bankruptcy than CRAs' system with overly optimism. We argue that after a string of high-profile corporate failures such as Enron and Arthur Anderson’s bankruptcies, legislators portrayed auditors negatively and ultimately led to the enactment and more forced liabilities and thus auditors become more conservative. To remedy CRAs' failure by providing overly optimism, we suggest that like as auditors, CRAs' regulations should be more strengthened on their liability about issuing credit ratings.