We document the importance of political promotion incentives for supervisors in banking supervision. Utilizing the merger of the China Banking Regulatory Commission (CBRC) and the China Insurance Regulatory Commission (CIRC) in 2018, we explore the actions of head of the CBRC's regional offices. We find that the increased political promotion incentives are associated with higher frequency, greater amount, and greater severity of penalties in regional banking supervision. The enhanced supervision is more remarkable when the head of the CBRC's regional offices has a higher political rank. After the merger of the two commissions, the regional banking supervision is significantly weakened with the disappearance of political promotion incentives. Furthermore, these enhanced regional supervision triggered by the merger event reduce bank risk. Our findings show that the increased political promotion incentives affect the supervisor's activities and improve the supervision effectiveness.

This study examines the effect of inside debt arising from CEO compensation deferral policies on shadow banking. We construct a parsimonious model that shows that increased bank inside debt leads to increased shadow banking. Using a CEO compensation deferral policy imposed on the Chinese banking industry in 2010, we empirically test our theoretical prediction on the effect of inside debt on shadow banking proxied by non-principal-guaranteed wealth management products. We find that banks that adopt the CEO compensation deferral policy exhibit higher levels of shadow banking than their counterparts and that this result is not contingent on bank size or the extent of government control. Moreover, the effect of inside debt on shadow banking is stronger in banks with higher loan-to-deposit and non-performing-loan ratios and in banks with CEO turnover, suggesting that the compensation deferral policy induces CEOs, especially newly appointed CEOs, to do more shadow banking to circumvent regulations regarding the balance-sheet risk and to boost performance.