5. Conclusion
Considering the publicity associated with audit services and the number and variety of audit report users, the ripple effect of default by audit firms is significant. Therefore, it is important to identify the determinants of audit firms’ cost of debt. Although the cost of debt may not be directly related to the default risk of audit firms, examining the cost of debt is important because the resulting information can be useful to regulators, audit clients, and investors. Audit firms may have a significant amount of debt, which may lead to financial distress. Also, financial expenses that must be paid within a short time period increase audit firms’ incentives to lowball their clients in order to increase liquidity. This practice can increase the likelihood of opinion shopping, thereby reducing audit quality. Thus, examining determinants of default in audit firms can help interested parties understand the potential risk associated with audit quality. Prior studies report that capital market reacts negatively for those clients with Arthur Anderson when Andersen closed their business (see Krishnamurthy et al., 2006). Andersen’s failure also affected the audit quality of former Andersen clients (Nagy, 2005) and audit fees (Kealey et al., 2007). Thus, this study provides useful implications to capital market participants including investors and regulators and adds to the literature on the effect of characteristics of a unique service industry on the cost of debt. In this study, we examine the association between audit firm and client portfolio characteristics and the cost of debt in audit firms. Financial institutions determine the interest rates for audit firms based on their evaluation of the likelihood of default. Furthermore, interest rates reflect the risk premiums for debtors required by creditors. Risk premiums are determined based on independent evaluations by financial institutions of the debtor’s ability to repay. When default risk is estimated as low (high), risk premiums are low (high); therefore, low (high) interest rates are applied.