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债务型资本流入、国内信贷周期与汇率制度选择

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汇率是全球金融周期与各国国内金融周期联动的纽带.本文基于28个新兴市场经济体数据,研究跨境资本流动与各国国内信贷周期的关系发现:债务型资本(跨国银行资本和债券资本)流入,与国内信贷总体上呈顺周期关系;相比于固定汇率制国家,在浮动汇率制国家,跨国银行资本流入与国内信贷的顺周期关系减弱(浮动汇率起到稳定器作用),但债券资本流入与国内信贷的顺周期关系有所增强.进一步分析显示,浮动汇率制能稳定未触发银行危机的"好的"信贷繁荣,但不能抑制以银行危机结束的"坏的"信贷繁荣.浮动汇率制须与加强宏观审慎管理相配合,方可有效降低国内信贷繁荣之后银行危机发生概率.本文可为我国汇率制度选择和系统性金融风险防范提供理论基础和经验依据.
Cross-border Capital Flows,Domestic Credit Cycles,and Exchange Rate Regimes Choice
The Central Financial Work Conference of 2023 proposes that efforts should be made to promote high-level financial opening-up,ensure financial and economic national security,and accelerate the construction of a financial power.In recent years,cross-border capital flows have become more frequent,and there is an obvious global financial cycle.Simultaneously,the relationship between cross-border capital flows and credit fluctuations in various countries has become closer.Historical experiences indicate that credit booms often precede financial disturbances like banking crises.In fact,exchange rates are crucial in linking cross-border capital flows,domestic credit cycles,and banking crises.Classical international finance theories suggest that under free capital flows,a floating exchange rate regime can stabilize external shocks and ensure the independence of central bank monetary policies.Under the background of global financial cycles,scholars have engaged in hot discussions about whether floating exchange rate regimes act as stabilizers and how China should choose its exchange rate regime and pursue high-quality financial opening-up.However,they have not yet reached a consensus.Therefore,it is necessary to explore the relationship among cross-border capital flows,domestic credit cycles,and banking crises under different exchange rate regimes.It could not only enhance international financial theories and provide empirical guidance for the reform of the RMB exchange rate regime,but also could act as a key element in promoting the process of high-quality financial opening-up and ensuring no systemic risks arise.This paper collects domestic credit and cross-border capital flow data from 28 emerging market economies,sourced from the International Monetary Fund and the Bank for International Settlements.The paper divides credit booms and busts,constructs a Probit regression model to study the empirical relationship between cross-border capital inflows and domestic credit booms or busts,and focuses on whether a floating exchange rate regime can act as a stabilizer.We find that non-direct investment debt inflows,especially cross-border bank loan inflows,exhibit a pro-cyclical relationship with domestic credit.Compared to fixed exchange rate regimes,the pro-cyclical relationship between cross-border bank loan inflows and domestic credit weakens in countries with floating exchange rate regimes,indicating that floating exchange rates play a stabilizing role.However,the pro-cyclical relationship between bond inflows and domestic credit strengthens under floating exchange rate regimes.Further analysis indicates that floating exchange rates can stabilize"good booms"that do not trigger banking crises but cannot suppress"bad booms"that end with banking crises.Thus,floating exchange rate regimes need to be coordinated with other policies,such as tight macroprudential policies,to effectively curb the occurrence of banking crises.This paper makes the following contributions:First,unlike existing studies that consider how capital inflows affect credit growth or analyze how capital inflows affect credit cycles from the perspective of debt structures,this paper analyzes the relationship among cross-border capital inflows,domestic credit cycles,and banking crises within a unified framework.More importantly,this paper studies the relationship among these three elements from the perspective of exchange rate regimes,investigating whether floating exchange rate regimes can act as stabilizers.Second,existing research rarely explores the relationship between different types of capital inflows and domestic credit fluctuations according to debt types and borrowing sectors.Avdjiev et al.(2021)found that domestic credit cycles are related to the type of external debt and borrowing sectors but did not further explore whether credit booms triggered by different types and sectors have different impacts on banking crises,and also did not investigate the role of floating exchange rate regimes.This paper finds that the stabilizing role of floating exchange rate regimes depends on the type and borrowing sectors.Third,existing literature has not explored the role of exchange rate regimes in stabilizing different types of credit booms and in preventing crises.This paper finds that floating exchange rate regimes can only stabilize"good booms"but cannot stabilize"bad booms"that lead to crises.Cooperation with other policies(such as macroprudential policies)is needed to better play the stabilizing role,indicating that floating exchange rate regimes are not a"one-size-fits-all"solution.Based on these conclusions,this paper has the following policy implications:First,emerging market economies should closely monitor and avoid large-scale cross-border bank loan flows.Second,in the process of promoting financial opening-up and maintaining financial stability,each department should effectively guard against exchange rate risks and choose reasonable external financing methods.When increasing domestic non-banking sector financing through the international bond market,the cost of managing exchange rate risks for the non-banking sector should be reduced through improving financial infrastructure.Third,emerging market economies need to strike a balance in the choice of exchange rate regimes while promoting financial opening-up and maintaining financial stability.Crawling peg regimes and managed floating regimes may be better choices.Fourth,exchange rate regimes themselves have limited effectiveness in preventing systemic financial risks.While maintaining a dual fluctuation of exchange rates,regulators should strengthen macroprudential supervision of the banking sector.

Capital InflowsDomestic Credit CyclesCredit BoomsExchange Rate Regimes

刘家琳、芦东

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北京化工大学经济管理学院,北京 102202

中国人民大学财政金融学院,北京 100872

债务型资本流入 国内信贷周期 信贷繁荣 汇率制度

2024

金融研究
中国金融学会

金融研究

CSTPCDCSSCICHSSCD北大核心
影响因子:2.047
ISSN:1002-7246
年,卷(期):2024.(5)