Bank capital (requirements) and credit supply: Evidence from pillar 2 decisions

We analyze how time-varying bank-specific capital requirements affect bank lending to the non-financial corporate sector as well as banks' balance sheet adjustments. To do so, we relate Pillar 2 capital requirements to a comprehensive corporate credit register coupled with bank and firm balance sheet data. Our analysis consists of three components. First, we investigate how capital requirements affect the supply of bank credit to the corporate sector, both on the intensive and extensive margin, as well as for different types of credit. Subsequently, we document how bank and firm characteristics as well as the monetary policy stance impact the relationship between bank capital requirements and the supply of credit. Finally, we examine how time-varying bank-specific capital requirements affect banks' balance sheet composition.     

The pass-through of bank capital requirements to corporate lending spreads

We study the impact of higher bank capital requirements on corporate lending spreads using granular bank- and loan-level data. Our empirical strategy employs the heterogeneity in capital requirements across banks and time of implementation in Switzerland. We find that changes in the capital deviation from the regulatory minimum affect lending spreads asymmetrically. In response to a reduction in the capital deviation, banks with deficits with respect to their risk-weighted capital requirement raise spreads relative to banks with surpluses and de-leverage. Banks respond to higher requirements by raising spreads and, for deficit banks, by cutting lending.     

公司治理、资本监管与银行风险承担

选取2007-2017年中国25家上市银行数据,采用面板回归模型对公司治理与资本监管对银行风险承担的影响进行实证分析。研究表明：股权集中度与银行风险承担之间呈正U型关系,较低的股权集中度会降低银行风险资产配置权重,股权集中度的提升会加大银行风险承担。董事会规模会促进银行风险承担,董事会规模过大将平滑单个董事表决权,导致董事会控制效率下降而引发银行经营决策频繁变动,由此加大银行风险承担。资本监管会抑制银行风险承担,资本监管的趋严促使银行减持风险资产进行资本补充;资本监管对股份制银行、国有大型银行与城农商银行风险承担的影响力度依次递减。货币供给增速的放缓将降低银行存款吸收能力,由此加大银行流动性风险,货币供给对银行信贷存在制约效应;经济增速的下调将降低企业盈利能力,由此加大银行风险承担,银行存在顺周期放贷倾向。     

Reserve Requirements,Liquidity Risk,and Bank Lending Behavior

Although reserve requirements (RR) have been used in emerging markets to smooth credit cycles, the transmission mechanism remains blurry. Using bank‐level data, we unveil the interaction of RR with bank lending. We identify a new channel that works through a decline in banks’ liquid assets and loan supply due to an increase in RR. “Quantitative tightening” through RR raises the short‐term funding needs of the banking system, which is met by collateralized central bank lending, thus depleting banks’ unencumbered liquid assets. Our results suggest that such a shift in bank liquidity is associated with a significant change in lending.     

Risk Overhang and Loan Portfolio Decisions: Small Business Loan Supply before and during the Financial Crisis

We estimate a structural model of bank portfolio lending and find that the typical U.S. community bank reduced its business lending during the global financial crisis. The decline in business credit was driven by increased risk overhang effects (consistent with a reduction in the liquidity of assets held on bank balance sheets) and by reduced loan supply elasticities suggestive of credit rationing (consistent with an increase in lender risk aversion). Nevertheless, we identify a group of strategically focused relationship banks that made and maintained higher levels of business loans during the crisis.     

Funding liquidity and bank risk taking

This study examines the relationship between funding liquidity and bank risk taking. Using quarterly data for U.S. bank holding companies from 1986 to 2014, we find evidence that banks having lower funding liquidity risk as proxied by higher deposit ratios, take more risk. A reduction in banks’ funding liquidity risk increases bank risk as evidenced by higher risk-weighted assets, greater liquidity creation and lower Z-scores. However, our results show that bank size and capital buffers usually limit banks from taking more risk when they have lower funding liquidity risk. Moreover, during the Global Financial Crisis banks with lower funding liquidity risk took less risk. The findings of this study have implications for bank regulators advocating greater liquidity and capital requirements for banks under Basel III.     

Does Macro‐Prudential Regulation Leak? Evidence from a UK Policy Experiment

The regulation of bank capital as a means of smoothing the credit cycle is a central element of forthcoming macro‐prudential regimes internationally. For such regulation to be effective in controlling the aggregate supply of credit it must be the case that: (i) changes in capital requirements affect loan supply by regulated banks, and (ii) unregulated substitute sources of credit are unable to offset changes in credit supply by affected banks. This paper examines micro evidence—lacking to date—on both questions, using a unique data set. In the UK, regulators have imposed time‐varying, bank‐specific minimum capital requirements since Basel I. It is found that regulated banks (UK‐owned banks and resident foreign subsidiaries) reduce lending in response to tighter capital requirements. But unregulated banks (resident foreign branches) increase lending in response to tighter capital requirements on a relevant reference group of regulated banks. This “leakage” is substantial, amounting to about one‐third of the initial impulse from the regulatory change.     

The international transmission of bank capital requirements: Evidence from the UK

We use data on UK banks? minimum capital requirements to study the impact of changes to bank-specific capital requirements on cross-border bank loan supply from 1999Q1 to 2006Q4. By examining a sample in which each recipient country has multiple relationships with UK-resident banks, we are able to control for demand effects. We find a negative and statistically significant effect of changes to banks? capital requirements on cross-border lending: a 100 basis point increase in the requirement is associated with a reduction in the growth rate of cross-border credit of 5.5 percentage points. We also find that banks tend to favor their most important country relationships, so that the negative cross-border credit supply response in “core” countries is significantly less than in others. Banks tend to cut back cross-border credit to other banks (including foreign affiliates) more than to firms and households, consistent with shorter maturity, wholesale lending which is easier to roll off and may be associated with weaker borrowing relationships.     

Firms’ financial and real responses to credit supply shocks: Evidence from firm-bank relationships in Germany

We investigate the importance of firm-bank relationships for the international transmission of bank distress to the real economy. Using a large panel of matched financial statements of firms of all sizes and their relationship banks in Germany, we find that banks with losses from proprietary trading activities during the 2007/8 financial crisis decreased their lending, and that their firm customers responded by reducing real investment and employment. We document how different types of firms partially offset reduced credit supply by resorting to alternative financing sources.     

How important are small banks to small business lending?: New evidence from a survey of small firms

Typically, small banks lend a larger proportion of their assets to small businesses than do large banks. The recent wave of bank mergers has thinned the ranks of small banks, raising the concern that small firms may find it difficult to access bank credit. However, bank consolidation will reduce small business credit only if small banks enjoy an advantage in lending to small businesses. We test the existence of a small bank cost advantage in small business lending by conducting the following simple test: If such advantages exist, then we should observe small businesses in areas with few small banks to have less bank credit. Using data on small business borrowers from the 1993 National Survey of Small Business Finance, we find that the probability of a small firm having a line of credit from a bank does not decrease in the long run when there are fewer small banks in the area, although short-run disruptions may occur. Nor do we find that firms in areas with few small banks are any more likely to repay trade credit late, suggesting that such firms are no more credit constrained than firms in areas with many small banks.     

Bank interest rates and credit relationships in Italy

When evaluating the performance of a financial system in supporting the investment activity of the corporate sector, a distinction is usually drawn between “banking economies” and “market economies”, the former being characterized by long-term relations between banks and the industrial sector. Although theoretical studies and empirical results seem to agree that lending relationships increase the available quantity of capital to firms, they have little to say on the cost of bank credit: it is not clear whether a close relationship with a main bank would allow the borrower to pay a lower interest rate or expose him to a monopolistic rent. Using a unique data-set reporting detailed information on the evolution over time of individual bank–borrower relationships in Italy, we show evidence that a main bank provides credit at a lower cost and that some competition helps to reinforce the commitment between the borrower and the bank.     

The role of rating agency assessments in less developed countries: Impact of the proposed Basel guidelines

We assess the potential impact for non-high-income countries (NHICs) of linking bank capital asset requirements (CARs) to private sector ratings–as contemplated by the new Basel proposal. Specifically, we show that linking bank CARs to external ratings would have a series of undesirable effects for NHICs. First, since ratings are by far less widespread for banks and corporations in NHICs, bank CARs would be practically insensitive to improvements in the quality of assets, widening the gap between banks of equal financial strength located in higher and lower income countries. Second, bank and corporate ratings in NHICs (as opposed to their homologues in high-income countries) are strongly linked to their sovereign ratings. This would expose bank capital requirements in NHICs to the same “pro-cyclical” swings, which have characterized sovereign rating revision in the recent crisis episodes. We conclude that linking bank CARs to private sector ratings would worsen the availability and cost of credit to NHICs – with potential negative effects on the level of economic activity – and suggest that a reassessment of the Basel proposal may help to avoid such undesired consequences.     

Collateral damaged? Priority structure,credit supply,and firm performance

A unique legal reform in 2004 in Sweden redistributed collateral rights from banks holding floating liens to unsecured creditors without changing the value of assets on firms’ balance sheets. Using a country-wide panel of all incorporated firms, we document that a zero-sum redistribution of collateral rights and the resulting reduction in collateral capacity towards banks contracts the amount and maturity of corporate debt and leads firms to slow investment and forego growth. Altering their allocation of assets, firms reduce particularly those assets with a low collateralizable value for banks and also hoard more cash. However, the reform has no impact on corporate capital intensity or efficiency, suggesting that under these newly binding credit constraints firms simply shrink their operations.     

The effect of bank capital on lending: Does liquidity matter?

This paper uses a sample of quarterly observations of insured US commercial banks to examine whether the effect of bank capital on lending differs depending upon the level of bank liquidity. We find that the effect of an increase in bank capital on credit growth, defined as growth rate of net loans and unused commitments, is positively associated with the level of bank liquidity only for large banks and that this positive relationship has been more substantial during the recent financial crisis period. This result suggests that bank capital exerts a significantly positive effect on lending only after large banks retain sufficient liquid assets.     

The macroeconomic impact of bank capital requirements in emerging economies: Past evidence to assess the future

We test for emerging economies the hypothesis – previously verified for G-10 countries only – that the enforcement of bank capital asset requirements (CARs) curtails the supply of credit. The econometric analysis on individual bank data suggests three main results. First, CAR enforcement significantly trimmed credit supply, particularly at less-well capitalized banks. Second, the negative impact has been larger for countries enforcing CARs in the aftermath of a currency/financial crisis. Third, the adverse impact of CARs has been somewhat smaller for foreign-owned banks, suggesting that opening up to foreign investors may have partly shielded the domestic banking sector from negative shocks. Overall, CAR enforcement – inducing banks to reduce their lending – may have had both beneficial and detrimental effects. On one hand, it may have reduced ill-advised lending – possibly induced by banks' exploitation of the public safety net – and this is desirable. On the other hand, CAR enforcement may have induced an aggregate credit slowdown or contraction in the examined emerging countries, thus exacerbating liquidity constraints and negatively affecting real activity. This paper is relevant to the ongoing debate on the impact of the revision of bank CARs, as contemplated by the new Basel proposal. Our results suggest that in several emerging economies the revision of bank CARs could well induce a credit supply retrenchment, which should not be underestimated.     

经济政策不确定性与企业贷款成本

基于大样本微观银行信贷数据,本文研究经济政策不确定性对企业的银行贷款成本的影响。研究发现,经济政策不确定性升高导致企业的银行贷款成本增加,且使得在中小型银行贷款的企业成本增加更多。异质性分析表明,经济政策不确定性升高对受政策因素影响较大的企业如小微企业、私营企业等的银行贷款成本的影响更为明显。进一步,对企业的银行贷款违约风险的研究发现,随着经济政策不确定性升高,企业的银行贷款违约风险反而降低。这表明,经济政策不确定性升高使得银行选择风险评级更低的贷款,符合谨慎性动机。本文研究结论表明,经济政策不确定性升高时,银行“自我保险”动机的增强使得企业的银行贷款成本增加,这在中小型银行中表现得更加明显,同时也更多地转嫁给中小企业。本文为经济政策不确定性对企业投资、宏观经济波动等的研究提供了微观解释机制,并揭示了政府经济政策的一致性、稳定性对维护金融稳定的重要作用。     

Bank capital buffers in a dynamic model

We estimate a dynamic structural banking model to examine the interaction between risk-weighted capital adequacy and unweighted leverage requirements, their differential impact on bank lending, and equity buffer accumulation in excess of regulatory minima. Tighter risk-weighted capital requirements reduce loan supplies and lead to an endogenous fall in bank profitability, reducing bank incentives to accumulate equity buffers and, therefore, increasing the incidence of bank failure. Alternatively, tighter leverage requirements increase lending, preserve bank charter value, and incentives to accumulate equity buffers leading to lower bank failure rates.     

Global Banks and Synthetic Funding: The Benefits of Foreign Relatives

This paper examines the effect of dislocations in foreign currency (FX) swap markets (“CIP deviations”) on bank lending. Using data from UK banks we show that when the cost of obtaining swap-based funds in a particular foreign currency increases, banks reduce the supply of cross-border credit in that currency. This effect is increasing in the degree of banks' reliance on swap-based FX funding. Access to foreign relatives matters as banks employ internal capital markets to shield their cross-border FX lending supply from the described channel. Partial substitution occurs from banks outside the UK not affected by changes in synthetic funding costs.     

Corporate Finance and the Monetary Transmission Mechanism

We analyze the transmission effects of monetary policy in ageneral equilibrium model of the financial sector, with banklending and securities markets. Bank lending is constrainedby capital adequacy requirements, and asymmetric informationadds a cost to outside bank equity capital. In our model, monetarypolicy does not affect bank lending through changes in bankliquidity; rather, it operates through changes in the spreadof bank loans over corporate bonds, which induce changes inthe aggregate composition of financing by firms, and in banks’equity-capital base. The model produces multiple equilibria,one of which displays all the features of a "credit crunch."     

Capital requirements and bank behavior in the UK: Are there lessons for international capital standards?

The financial crisis prompted widespread interest in developing a better understanding of how capital regulation drives bank behavior. This paper uses a unique, comprehensive database of regulatory capital requirements on all UK banks to examine their effects on capital, lending and balance sheet management behavior. We find that capital requirements that include firm-specific, time-varying add-ons set by supervisors affect banks’ desired capital ratios and that resulting adjustments to capital and lending depend on the gap between actual and target ratios. We use these results to measure the effects of a capital regime that includes features similar to those embedded in the UK framework. Our results suggest that countercyclical capital requirements may be less effective in slowing credit activity when banks can readily satisfy them with lower-quality (lower-costing) capital elements versus higher-quality common equity. Given the size of the UK banking sector and the global nature of many of the largest institutions in the UK banking sector, the results have implications for the ongoing debate surrounding the design and calibration of international capital standards.