Parametric versus nonparametric methods in risk scoring: an application to microcredit

The importance of credit access to improve economic opportunities in developing markets is well established in the literature. However, there exists a strong need to mitigate adverse selection problems in microlending. A risk scoring model that more accurately predicts the likelihood of repayment of potential borrowers can help address this market imperfection and to benefit both lenders and borrowers. This paper compares the performance of nonparametric versus semiparametric and traditional parametric risk scoring models based on default probabilities. We show the advantages of relying on less structured, data-driven methods for risk scoring using both simulated data and data from credit loans granted to small and microenterprises in rural Peru. The estimation results indicate that nonparametric methods lead to a better evaluation of credit worthiness and can help prevent including potential “bad” borrowers and excluding “good” borrowers from sensitive microcredit markets.     

Lending policies of informal, formal and semiformal lenders

This paper compares lending policies of formal, informal and semiformal lenders with respect to household lending in Vietnam. The analysis suggests that the probability of using formal or semiformal credit increases if borrowers provide collateral, a guarantor and/or borrow for business‐related activities. The probability of using informal credit increases for female borrowers. It also appears that the probability of using formal credit increases in household welfare up to a certain threshold, but at a decreasing rate. In addition, the paper discerns the determinants of probability of default across lender types. Default risk of formal credit appears to be strongly affected by formal loan contract terms, e.g., loan interest rate and form of loan repayment, whereas default risk on informal loans is significantly related to the presence of propinquity and other internal characteristics of the borrowing household. Overall, the study raises several important implications for the screening, monitoring and enforcement instruments that may be employed by different types of lenders.     

Determinants of microcredit repayment in Portugal: analysis of borrowers,loans and business projects

Microcredit programs in Portugal represent a unique case for studying the microcredit repayment determinants in a developed country, as it experienced a financial hardship in 2008–2009, with economic and social consequences that led to unemployment crisis. This research examined the determinants of microcredit loan repayment based on a sample of 752 microcredit loans granted in Portugal by the National Association for the Right to Credit, adopting individual lending mechanisms and granting loans through partnerships with several credit institutions. This is the first study to ascertain the influence that a set of factors – grouped into three categories: borrowers’ individual characteristics; loan characteristics; and characteristics of business projects implemented by borrowers – has on the repayment ability of microcredit programs, in a developed country of the Eurozone. Moreover, this is the first study using an ordered logistic regression (OLR) in estimating the determinants of microcredit loan repayment. Similar to previous studies, married borrowers tend to repay loans faster as they tend to be more responsible than single borrowers. Nationality seems to be an issue as foreigners tends to default the repayment loans. Finally, those involved in manufacturing activities perform better than those involved in service activities in repaying their loans. This clearly indicates that in developed countries special attention needs to be provided to minority groups as well as market/supply conditions, which are not normally considered in less favored economic countries.     

Credit layering in informal financial markets

Informal lenders with access to markets or capital often find it attractive to delegate loan provision to downstream lenders who have an information or enforcement advantage in dealing with particular borrowers. In this paper we examine the conditions under which such an arrangement is preferred by two informal lenders, a landlord and a merchant, who compete in loan provision to tenant farmers differentiated by wealth. We show that credit layering is preferred only when tenants are sufficiently poor. In this case, the trader lends to tenant farmers via a contract with their landlord. Otherwise, only the trader lends. As a consequence, a pattern of borrowing emerges in which relatively wealthy tenants borrow from merchants while poor tenants borrow mainly from their landlords. Interlinkage between land and credit thus arises only for a subset of tenants and purely as a consequence of credit layering. This pattern is shown to be supported empirically.     

Vertical Links Between Formal and Informal Financial Institutions

The paper investigates vertical linkages between formal and informal financial institutions. Specifically, it studies a policy that expands formal credit to informal lenders, in the hope that this will improve loan terms for borrowers who are shut out of the formal sector. Special attention is paid to the Philippines. It is argued that the effects of stronger vertical links depend on the form of lender competition. In particular, if the relationship between lenders is one of strategic cooperation (sustained by threats of reprisal in a repeated setting), an expansion of formal credit may worsen the terms faced by informal borrowers.     

Information, Informal Finance, and SME Financing

Informal finance exists extensively and has been playing an important role in small- and medium-sized enterprise (SME) financing in developing economies. This paper tries to rationalize the extensiveness of informal finance. SME financing suffers more serious information asymmetry to the extent that most SMEs are more opaque and can only provide less collateral. Informal lenders have an advantage over formal financial institutions in collecting “soft information” about SME borrowers. This paper establishes a model including formal and informal lenders and high- and low-risk borrowers with or without sufficient collateral and shows that the credit market in which informal finance is eliminated will allocate funds in some inefficient way, and the efficiency of allocating credit funds can be improved once informal finance is allowed to coexist with formal finance. Translated from Economic Research Journal, 2005, 7 (in Chinese)     

Dependence of Informal Interest Rates and Level of Lenders’ Influence in the Informal Loan Market in Thailand

Informal finance with usurious interest rates seems to be the last resort for the poor in many developing countries. In Thailand, informal credit lenders can freely set up extortionate interest rates and use controversial enforcement actions to pressure borrowers to repay loans, because that legal enforcement is not practical due to the low punishment levels for those lenders. Despite widespread interest in the determinants of the informal interest rates, it remains a largely unexplored area. This study investigates whether level of lenders’ influence over the borrower, and some characteristics of the borrowers, are related to informal interest rates, enabling the rates to be classified into particular categories. Ordered logistic regression is used to analyze the data. The investigation was based on information collected in a survey presented to a sampled population of 694 participants from Bangkok, Nonthaburi, Phathum Thani, and Samut Prakan where the number of informal loans during the last seven years is highest when compared to other regions of the country. The results suggest that the level of lenders’ influence over the borrower in order to obtain a loan correlates with the informal interest rates applied. Moreover, some characteristics of a borrower, i.e., debt-to-income ratio and high level of familiarity between an informal lender and a borrower, also significantly affect the rates.     

Access to capital in rural Thailand: An estimated model of formal vs. informal credit

This paper analyzes the mechanism underlying access to credit, focusing on two important aspects of rural credit markets. First, moneylenders and other informal lenders coexist with formal lending institutions such as government or commercial banks, and, more recently, micro-lending institutions. Second, potential borrowers presumably face sizable transaction costs in obtaining external credit. We develop and estimate a model based on limited enforcement and transaction costs that provides a unified view of these facts. Based on data from Thailand, the results show that the limited ability of banks to enforce contracts, more than transaction costs, is crucial in understanding the observed diversity of lenders.     

信息、非正规金融与中小企业融资

各种形式的非正规金融在发展中国家和地区广泛存在。本文认为,由于中小企业信息不透明,且常常不能提供充分的担保或抵押,正规金融机构难以有效克服信息不对称造成的逆向选择问题,而非正规金融则在收集关于中小企业的“软信息”方面具有优势。这种信息优势是非正规金融广泛存在的根本性原因,金融抑制只是一个强化因素,同时非正规金融市场的各种特征也都源于其存在的根本逻辑。本文构建了一个包括异质的中小企业借款者和异质的贷款者(具有不同信息结构的非正规金融和正规金融部门)的金融市场模型,证明非正规金融的存在能够改进整个信贷市场的资金配置效率。     

Dual Financial Systems and Inequalities in Economic Development

This paper analyzes the emergence and the evolution of a modern banking system, in a developing economy where banks coexist with informal credit institutions. Banks have a superior ability in mobilizing savings while informal lenders enjoy a superior information on borrowers. More specifically, banks cannot observe perfectly the behavior of borrowers; therefore the latter need to provide collateral assets in order to obtain bank loans. Physical collateral is not needed to borrow in the informal credit market: informal lenders can rely on social networks to obtain information on borrowers' behavior and invoke social sanctions to enforce repayment. The sustained growth path is associated with the successful development of the banking system that gathers savings on a large scale. However, informal lenders and other traditional credit institutions are necessary in the first stage of development when collateral is scarce. In this economy, the development of modern financial intermediaries is closely associated with the accumulation of collateral assets by entrepreneurs. This implies that the initial level of development as well as the initial distribution of wealth will determine the joint evolution of the real side of the economy and the financial system. Under certain conditions, two long-run steady-state equilibria exist: in the first one the economy stops growing and the banking system never successfully develops; in the second one the economy reaches a sustained growth rate and the informal sector asymptotically vanishes. The impact of the following policies is discussed: financial repression, micro-credit institutions and redistribution of assets.     

SOME NEW EVIDENCE ON COMPETITION IN PAYDAY LENDING MARKETS

A critical question in the policy debate about payday lending is whether other financial institutions can plausibly provide attractive and lower‐priced substitutes for standard payday loans. I present several new pieces of evidence addressing the question, focusing on whether credit unions, which are often held as the strongest potential competitors to payday lenders, do (or might) viably compete in the payday loan market. National payday loan offerings by credit unions show that very few credit unions currently offer payday loans. Credit union industry reports suggest that those credit unions offering such loans seem unwilling or unable to undercut substantially the prevailing prices set by payday lenders. Those industry reports also reveal that lower‐priced credit union loans generally ration riskier borrowers out of the market by imposing greater restrictions on approval and repayment; risk‐adjusted prices for credit union payday loans may not be lower at all. Survey evidence suggests that most current payday borrowers prefer higher‐priced but less restrictive standard payday loans to lower‐priced but more restrictive alternatives offered by credit unions. The combined demand‐ and supply‐side evidence suggests that one should not expect credit unions (or by extension banks) to offer lower‐priced, higher‐quality alternatives for consumers who currently use payday loans. (JEL G2, L0, L5)     

Heterogeneity of farm loan packaging term decisions: a finite mixture approach

This article revisits the minority borrowers’ discrimination issue in farm lending by departing from traditional loan approval-rejection or default rate-based analytical models to focus on loan packaging decisions. This study analyses such decisions using a Finite Mixture Model that optimally separates the borrowers into two sub-classes allowing for a priori unspecified heterogeneity in borrowers’ data, which has not been accounted for in previous loan discrimination analyses. Results show that non-white farm borrowers tend to receive larger loans among those in the lower loan latent class, but receive relatively lower loans in the larger loans borrower category. These farmers are also charged higher interest rates vis-à-vis their peers in both the low and high interest rate latent classes. This study’s results also indicate that male borrowers are accommodated with larger loans and longer maturities in all loan amount and maturity latent classes. This study validates the interplay among significant trends in loan packaging terms for racial and gender minority borrowers that seems logical from the lenders’ credit risk management perspective.     

Children's schooling in Nicaragua: What is the link between educational achievement,borrowing, and gender?

The impact of credit has been widely studied, and yet little is known about the effect of formal versus informal loans. In this paper, we contrast the two and their impact on children's schooling using longitudinal data from Nicaragua. To address endogeneity, we utilize both household fixed effects and locality–year fixed effects. Our results indicate that, on average, children from borrowing households fare worse than children from nonborrowing households, with male borrowers having a disproportionately negative effect on boys, and vice versa for girls and female borrowers. Informal credit is found to have a protective effect on school attendance, but the effects of formal and informal credit on cumulative schooling are found to be statistically equivalent. However, this appears to mask considerable heterogeneity within informal borrowing.     

Investment, credit, and endogenous cycles

This paper presents a general-equilibrium dynamic Ramsey-type model that can generate endogenous cycle. We assume two different representative agents, borrowers and lenders, and financial intermediaries with inside and outside money. We investigate under which conditions this model presents a cyclical relationship between capital and loans. The sources of endogenous fluctuations in this model come from a credit restriction in the representative-borrower problem.     

Interaction of formal and informal financial markets in quasi-emerging market economies

The primary objective of this paper is to investigate the interaction of formal and informal financial markets and their impact on economic activity in quasi-emerging market economies. Using a four-sector dynamic stochastic general equilibrium model with asymmetric information in the formal financial sector, we come up with three fundamental findings. First, we demonstrate that formal and informal financial sector loans are complementary in the aggregate, suggesting that an increase in the use of formal financial sector credit creates additional productive capacity that requires more informal financial sector credit to maintain equilibrium. Second, it is shown that interest rates in the formal and informal financial sectors do not always change together in the same direction. We demonstrate that in some instances, interest rates in the two sectors change in diametrically opposed directions with the implication that the informal financial sector may frustrate monetary policy, the extent of which depends on the size of the informal financial sector. Thus, the larger the size of the informal financial sector the lower the likely impact of monetary policy on economic activity. Third, the model shows that the risk factor (probability of success) for both high and low risk borrowers plays an important role in determining the magnitude by which macroeconomic indicators respond to shocks.     

International factor mobility,informal interest rate and capital market imperfection: A general equilibrium analysis

This paper makes an attempt to provide a theory of determination of interest rate in the informal credit market in a less developed economy in terms of a three-sector static deterministic general equilibrium model. There are two informal sectors which obtain production loans from a monopolistic moneylender and employ labour from the informal labour market. On the other hand, the formal sector employs labour at an institutionally fixed wage rate and takes loans from the competitive formal credit market. We show that an inflow of foreign capital and/or an emigration of labour raises (lowers) the informal (formal) interest rate but lowers the competitive wage rate in the informal labour market when the informal manufacturing sector is more capital-intensive vis-à-vis the informal agricultural sector. International factor mobility, therefore, raises the degrees of distortions in both the factor markets in this case.     

金融腐败:非规范融资行为的交易特征和体制动因

本文以改革进程中的非规范融资交易为研究对象 ,通过银行 -借款企业动态博弈和经验研究 ,归纳如下主要结论 :第一 ,在金融交易中 ,金融机构的腐败体现为利用资金配置权进行的两类寻租行为 ;第二 ,银行的寻租程度取决于改革进程中中央银行和财政对银行的转移支付和内控制度建设的相对力度比较 ,因而遏制融资腐败的方法是严格转移支付纪律 ,加强内控制度 ;第三 ,企业借款行为是在自筹资金和银行借款间进行的相对成本比较 ,企业被动选择行贿 (交租 ) ,因而其真实融资成本远远高于名义法定金融机构贷款利率 ;第四 ,由于存在转移支付机制 ,企业与银行的非规范金融交易的实质是对中央银行和财政转移支付的分割 ;第五 ,根据以上结论 ,民间借贷与正规金融价格实际是均衡的 ,不能简单定义民间借贷是高利贷 ,如果如此定义 ,则正规金融也同样具备高利贷特征。     

Adverse selection as an explanation of credit rationing and different lender types

An adverse selection model is utilized to demonstrate that informational asymmetry may make it wealth optimal for the financial intermediary (FI) to credit ration and to rationalize the existence of different lenders in the credit market. The crucial assumption is that borrowers differ in their tolerance for a lender-imposed default penalty, the severity of which also varies with the lender. The credit rationing portion proves that the FI will: 1) be forced by a binding regulatory constraint to overinvest in capital; 2) ration its worst risk class borrowers; 3) establish its optimal loan interest rate on the basis of the average quality of its loans and the interest rate elasticity of the borrower demand in its best risk category; and 4) decrease the total loan volume and increase the loan interest rate due to an increase in the capital requirement, but the effect on the default risk quality of its loan portfolio is ambiguous. The existence result is that if a lender has a high default penalty, he can charge a lower rate and attract only “good” borrowers, i.e., heterogeneous lender types encourage the screening of borrowers and vice versa.     

Microfinance and gender empowerment

In this paper, we develop a theoretical model of household production, bargaining and credit to analyse how access to microcredit affects intra-household decision-making and welfare, and identify conditions under which female household members are most likely to benefit. We show that, consistent with ethnographic accounts of the impact of microcredit programmes on poor households, access to loans can lead to a variety of outcomes for intra-household decision-making and welfare depending on initial conditions and that, in some instances, women borrowers may experience a decline in welfare. We identify two instances in which a woman is most likely to benefit: when there is scope for investing the loan profitably in a joint activity, and when a large share of the household budget is devoted to household public goods.     

Strategic interaction in undeveloped credit markets

This paper studies the strategic interaction between informal and formal lenders in undeveloped credit markets. In a model with adverse selection, loan seniority, market power, and differences in the cost of lending, it is shown that under general conditions a co-funding equilibrium will be a Nash outcome of the game. We demonstrate that a collateral requirement in connection with formal loans always generates a new co-funding equilibrium in which both lenders earn higher profits. A government subsidy to the formal lender may have the opposite effect. We relate our results to existing empirical evidence and the emerging discussion of how to best ensure financial viability and outreach of microfinance institutions.