Mandatory audit partner rotation has been adopted in certain countries while audit firm rotation is still being debated in many places. Most of the extant research on the relation between auditor tenure and earnings quality provides evidence at the audit firm level. However, since audit firm tenure is correlated with partner tenure and audit firm rotation is more costly than partner rotation, it is important to know whether earnings quality is related to audit firm tenure, partner tenure, or both. We investigate this issue using a sample of Taiwanese companies for which the audit report must be signed by two partners with their names disclosed in the report. Using performance adjusted discretionary accruals as a proxy for earnings quality, we find that the absolute and positive values of discretionary accruals decrease significantly with partner tenure. After controlling for partner tenure, we find that absolute discretionary accruals decrease significantly with audit firm tenure. Our findings are not consistent with the arguments that earnings quality decreases with extended audit partner tenure and that audit firm rotation in addition to partner rotation would improve earnings quality. Our results are robust to alternative ways of measuring partner tenure under the dual signature system. However, since the audit reports do not disclose which partner is responsible for maintaining the auditor-client relationship, measurement errors in partner tenure remain an issue that cannot be fully addressed in the context of our study.

ABSTRACT In this paper, we examine why Chinese reverse merger (RM) firms have lower financial reporting quality than U.S. IPO firms. We find that the financial reporting quality of U.S. RM firms is similar to that of matched U.S. IPO firms, but Chinese RM firms exhibit lower financial reporting quality than Chinese ADR firms. We also find that Chinese RM firms exhibit lower financial reporting quality than U.S. RM firms. These results indicate that the use of the RM process is associated with poor financial reporting quality only in firms from China, where legal enforcement and investor protection are weak. In addition, we find that compared with Chinese ADR firms, Chinese RM firms have weaker bonding incentives (as measured by CEO turnover-performance sensitivity) and poorer corporate governance. These factors, in turn, contribute to the lower financial reporting quality of Chinese RM firms. Overall, our results suggest that the less scrutinized RM process allows the Chinese firms with weak bonding incentives and poor governance to gain access to U.S. capital markets, resulting in poor financial reporting quality. JEL Classifications: G15; G24; G34; G38.