Zhang Zongxin, Huang Zijian
Studies of International Finance. 2026, 0(3): 75-90.
The real estate sector is a vital component of China's economy, as well as a significant source of financial risk. Since 2021, the downturn of China's real estate cycle has led to the emergence of credit risks associated with real estate sector. Given the substantial scale of real estate loans held by China's banking system, shocks stemming from real estate credit pose a potential threat to banking stability.
Aiming at clarifying how real estate credit shocks affect banking system risks and their underlying mechanisms, this paper constructs an interbank network model that integrates capital and liquidity perspectives. The model captures direct and indirect bank linkages while incorporating four contagion channels. On this basis, the study conducts numerical simulations to assess the impact of real estate credit shocks on banking system risk and to determine the safety threshold. This paper further decomposes the structure of banking system risk, measures bank-level systemic vulnerability and systemic importance, and evaluates the cross-regional spillover effects of regional real estate risks. Additionally, the study simulates the effect of the policy proposed during the 2025 National People's Congress and the Chinese People's Political Consultative Conference(NPC & CPPCC)regarding the replenishing capital of large state-owned commercial banks.
The study yields several important findings. Firstly, the impact of real estate credit shocks on the banking system exhibits a dual-phase characteristic of“risk mitigation to risk diffusion”as the shock intensifies. Under minor shocks, the banking system can absorb the effects on capital and liquidity. When the shock exceeds the safety threshold, risks tend to diffuse within the banking system. Currently, China's non-performing loan ratio in real estate sector is within the risk mitigation range and remains far below the safety threshold, indicating that real estate credit shocks will not trigger systemic risks. Dynamically, the reduction in real estate credit scale has limited banks' exposure to real estate risks, significantly enhancing the sector's resilience to shocks. Secondly, the combined effect of interbank network and real estate market network can lead to cross-regional spillovers of regional real estate risks, with nationwide large banks acting as critical nodes. Thirdly, the policy proposed during the 2025 NPC & CPPCC sessions“issuing 500 billion yuan of special treasury bonds to support large state-owned commercial banks in replenishing capital”,which can effectively curb risk contagion, expand the safety threshold against real estate credit shocks, and play a role in mitigating systemic risks.
Based on the findings, this paper proposes three policy recommendations. Firstly, establish a dynamic intervention mechanism against real estate credit shocks including supporting distressed real estate firms to lower credit default risks, implementing network-based stress tests and bank risk ratings, and employing appropriate regulations to sever risk contagion channels. Secondly, implement differentiated risk prevention measures based on banks' systemic importance and vulnerability, such as capital replenishment for systemically important banks, prudential oversight for vulnerable small and medium-sized banks, and market-based exit for high-risk banks. Thirdly, build a cross-regional risk prevention system based on the“real estate-banking”dual network, with the aims of securing the safety threshold for regional real estate credit risks and preventing the spillover of regional risks into system-wide crises.