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Default and risk premia in microfinance group lending

Default and risk premia in microfinance group lending
Default and risk premia in microfinance group lending
For a risk neutral lender and a group of borrowers facing identical revenue risks we compare individual loans and group lending. We stress the importance of group liquidity in defining the necessary risk premium. There are no welfare differences between the loan forms. However, the default rates and risk premia vary ambiguously between the loan forms. Simulations replicating empirical interest rates and default rates show that the group interest rate is lower for a larger group while the effect of group size on default risk is ambiguous. We then consider the case of identical correlated risks between borrowers. Positive correlation of projects gives a higher downward risk, so a higher group interest rate and a higher fraction of successes are required. Unlike independent group lending, the interest rate and the default risk are not lower in the larger group loan with correlated returns. Simulations using beta-binomial distributions are presented
group lending, default rate, interest rate, correlated outcomes
14/28
1-30
University of York
Simmons, Peter
1c22ea76-208a-44a3-bea5-4dec5d8ef7e9
Tantisantiwong, Nongnuch
73b57288-a4dc-4456-8d1b-12b8d07dc3b4
Simmons, Peter
1c22ea76-208a-44a3-bea5-4dec5d8ef7e9
Tantisantiwong, Nongnuch
73b57288-a4dc-4456-8d1b-12b8d07dc3b4

Simmons, Peter and Tantisantiwong, Nongnuch (2014) Default and risk premia in microfinance group lending (Discussion Papers in Economics, 14/28) York. University of York

Record type: Monograph (Discussion Paper)

Abstract

For a risk neutral lender and a group of borrowers facing identical revenue risks we compare individual loans and group lending. We stress the importance of group liquidity in defining the necessary risk premium. There are no welfare differences between the loan forms. However, the default rates and risk premia vary ambiguously between the loan forms. Simulations replicating empirical interest rates and default rates show that the group interest rate is lower for a larger group while the effect of group size on default risk is ambiguous. We then consider the case of identical correlated risks between borrowers. Positive correlation of projects gives a higher downward risk, so a higher group interest rate and a higher fraction of successes are required. Unlike independent group lending, the interest rate and the default risk are not lower in the larger group loan with correlated returns. Simulations using beta-binomial distributions are presented

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More information

Published date: 2014
Keywords: group lending, default rate, interest rate, correlated outcomes
Organisations: Centre of Excellence for International Banking, Finance & Accounting

Identifiers

Local EPrints ID: 374949
URI: http://eprints.soton.ac.uk/id/eprint/374949
PURE UUID: 3605ad9a-a0f5-4930-ab08-47d5f50a238d

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Date deposited: 06 Mar 2015 14:33
Last modified: 13 Mar 2019 18:23

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