Publication:
Consumer Surplus with Incomplete Markets: Applications to Savings and Microfinance

Loading...
Thumbnail Image
Files in English
English PDF (6.02 MB)
193 downloads
English Text (162.41 KB)
31 downloads
Date
2023-07-10
ISSN
Published
2023-07-10
Editor(s)
Abstract
The household welfare gains from financial inclusion are empirically elusive. This paper establishes that household welfare gains from a financial technology are equal to the area under dynamically compensated demand in a household model with incomplete financial markets, and general technology, preferences, and choice sets. This paper then estimates compensated demand for financial technologies leveraging three randomized control trials that introduce experimental variation in interest rates. Welfare gains per dollar lent or saved are small as compensated demand elasticities are large, but still correspond to large aggregate welfare gains from financial inclusion.
Link to Data Set
Citation
Loeser, John Ashton. 2023. Consumer Surplus with Incomplete Markets: Applications to Savings and Microfinance. Policy Research Working Papers; 10481. © World Bank. http://hdl.handle.net/10986/39966 License: CC BY 3.0 IGO.
Associated URLs
Associated content
Report Series
Other publications in this report series
Journal
Journal Volume
Journal Issue

Related items

Showing items related by metadata.

  • Publication
    A Conceptual Model of Incomplete Markets and the Consequences for Technology Adoption Policies in Ethiopia
    (World Bank, Washington, DC, 2013-10) Gurara, Daniel Zerfu; Larson, Donald F.
    In Africa, farmers have been reluctant to take up new varieties of staple crops developed to boost smallholder yields and rural incomes. Low fertilizer use is often mentioned as a proximate cause, but some believe the problem originates with incomplete input markets. As a remedy, African governments have introduced technology adoption programs with fertilizer subsidies as a core component. Still, the links between market performance and choices about using fertilizer are poorly articulated in empirical studies and policy discussions, making it difficult to judge whether the programs are expected to generate lasting benefits or to simply offset high fertilizer prices. This paper develops a conceptual model to show how choices made by agents supplying input services combine with household livelihood settings to generate heterogeneous decisions about fertilizer use. An applied model is estimated with data from a panel survey in rural Ethiopia. The results suggest that adverse market conditions limit the adoption of fertilizer-based technologies, especially among resource-poor households. Farmers appear to respond to market signals in the aggregate and this provides a pathway for subsidies to stimulate demand. However, the research suggests that lowering transaction costs, through investments in infrastructure and market institutions, can generate deeper effects by expanding the technologies available to farmers across all pricing outcomes.
  • Publication
    Factor Market Failures and the Adoption of Irrigation in Rwanda
    (World Bank, Washington, DC, 2019-12) Jones, Maria Ruth; Kondylis, Florence; Loeser, John Ashton; Magruder, Jeremy
    This paper examines constraints to adoption of new technologies in the context of hillside irrigation schemes in Rwanda. It leverages a plot-level spatial regression discontinuity design to produce 3 key results. First, irrigation enables dry season horticultural production, which boosts on-farm cash profits by 70 percent. Second, adoption is constrained: access to irrigation causes farmers to substitute labor and inputs away from their other plots. Eliminating this substitution would increase adoption by at least 21 percent. Third, this substitution is largest for smaller households and wealthier households. This result can be explained by labor market failures in a standard agricultural household model.
  • Publication
    Multilateral Trade Liberalization and Mexican Households : The Effect of the Doha Development Agenda
    (World Bank, Washington, DC, 2005-09) Nicita, Alessandro
    Empirical evidence suggests that global trade reforms are unlikely to produce analogous results across countries, especially when analyzing their effect on poverty. This implies that the analysis of trade reform on social welfare cannot be generalized and needs to be conducted on a country by country basis. Moreover, even within the same country, geographic areas, households, and individuals are likely to be differentially affected, some of them benefiting more than others, while others might lose. With this in mind, the author provides a quantitative estimate of the effect on Mexican households from the implementation of the Doha development agenda. His analysis uses a two-step approach for which changes in prices and factors are estimated through a CGE model (GTAP) and then mapped into the welfare function of the household using household survey data. The empirical approach the author uses aims to measure the impact of Doha implementation by tracing changes in the household prices of goods and factors and their impact on household welfare, taking particular account the role of domestic price transmission. The findings suggest that multilateral trade liberalization alone would have a negative effect on Mexican households, even though very small. However, when the implementation of the Doha development agenda is complemented by domestic policies aimed at increasing productivity and improving domestic price transmission, the overall effects become positive. The results point to the importance of domestic price transmission in determining the variance of the effects across households.
  • Publication
    A Primer on Consumer Surplus and Demand : Common Questions and Answers
    (World Bank, Washington, DC, 2006-05) Peskin, Henry M.
    Measuring consumer's surplus is an increasingly popular approach to quantifying the monetary benefits of energy projects at the World Bank. This paper provides a brief primer on the concept and addresses some concerns and criticisms for this method. The contents include: consumer demand - this paper assumes that the benefit measured by consumer's surplus is a satisfactory measure of the benefit of policy that brings about lower energy prices and considers key challenges in this approach; estimating the demand curve; are two points adequate for estimating the demand curve - a large gain in consumer's surplus is an expected outcome of the large fall in energy costs due to electrification; whose demand curve is it anyway; does willingness-to-pay overestimate ability-to-pay; why is consumer's surplus so large; aren't the estimates affected by subsidies and taxation; and why not simply ask consumers about their benefits from electrification.
  • Publication
    Choosing Rural Road Investments to Help Reduce Poverty
    (World Bank, Washington, DC, 2000-10) Van de Walle, Dominique
    The author examines how rural road investment projects should be selected and appraised when the objective is poverty reduction. After critically reviewing past and current practices, the author develops an operational approach grounded in a public economics framework in which concerns of equity and efficiency are inseparable, information is incomplete in important ways, and resources are limited. She addresses a key problem: that an important share of the benefits to the poor from rural roads cannot be measured in monetary terms. The selction formula she proposes aims to identify places where poverty and economic potential are high and access is low. She illustrates the method using data for and project experience in Vietnam. Among the advantages of proceeding as outlined in her proposal: This approach holds the hope of building capacity and is participatory; it extracts local information that may not be readily available to the central government; and it appears to be feasible because it relies on local authorities participating in the appraisal of subprojects.

Users also downloaded

Showing related downloaded files

  • Publication
    World Bank East Asia and Pacific Economic Update, April 2025: A Longer View
    (Washington, DC: World Bank, 2025-04-24) World Bank
    East Asia and Pacific (EAP) outpaced most regions in economic growth in 2024. To sustain this momentum and generate jobs, EAP countries must navigate global uncertainty and tackle long-term challenges tied to shifting global integration, climate change, and demographic trends. In its 2025 Regional Economic Update, the World Bank projects that growth in EAP will slow down to 4.0 percent in 2025, compared to 5.0 percent in 2024. Uncertainty around these projections remains high, and growth outcomes will depend on global developments and national policy choices.
  • Publication
    Commodity Markets Outlook, April 2025
    (Washington, DC: World Bank, 2025-04-29) World Bank
    Commodity prices are set to fall sharply this year, by about 12 percent overall, as weakening global economic growth weighs on demand. In 2026, commodity prices are projected to reach a six-year low. Oil prices are expected to exert substantial downward pressure on the aggregate commodity index in 2025, as a marked slowdown in global oil consumption coincides with expanding supply. The anticipated commodity price softening is broad-based, however, with more than half of the commodities in the forecast set to decrease this year, many by more than 10 percent. The latest shocks to hit commodity markets extend a so far tumultuous decade, marked by the highest level of commodity price volatility in at least half a century. Between 2020 and 2024, commodity price swings were frequent and sharp, with knock-on consequences for economic activity and inflation. In the next two years, commodity prices are expected to put downward pressure on global inflation. Risks to the commodity price projections are tilted to the downside. A sharper-than-expected slowdown in global growth—driven by worsening trade relations or a prolonged tightening of financial conditions—could further depress commodity demand, especially for industrial products. In addition, if OPEC+ fully unwinds its voluntary supply cuts, oil production will far exceed projected consumption. There are also important upside risks to commodity prices—for instance, if geopolitical tensions worsen, threatening oil and gas supplies, or if extreme weather events lead to agricultural and energy price spikes.
  • Publication
    Poverty, Prosperity, and Planet Report 2024
    (Washington, DC: World Bank, 2024-10-15) World Bank
    The Poverty, Prosperity, and Planet Report 2024 is the latest edition of the series formerly known as Poverty and Shared Prosperity. The report emphasizes that reducing poverty and increasing shared prosperity must be achieved in ways that do not come at unacceptably high costs to the environment. The current “polycrisis”—where the multiple crises of slow economic growth, increased fragility, climate risks, and heightened uncertainty have come together at the same time—makes national development strategies and international cooperation difficult. Offering the first post-Coronavirus (COVID)-19 pandemic assessment of global progress on this interlinked agenda, the report finds that global poverty reduction has resumed but at a pace slower than before the COVID-19 crisis. Nearly 700 million people worldwide live in extreme poverty with less than US$2.15 per person per day. Progress has essentially plateaued amid lower economic growth and the impacts of COVID-19 and other crises. Today, extreme poverty is concentrated mostly in Sub-Saharan Africa and fragile settings. At a higher standard more typical of upper-middle-income countries—US$6.85 per person per day—almost one-half of the world is living in poverty. The report also provides evidence that the number of countries that have high levels of income inequality has declined considerably during the past two decades, but the pace of improvements in shared prosperity has slowed, and that inequality remains high in Latin America and the Caribbean and Sub-Saharan Africa. Worldwide, people’s incomes today would need to increase fivefold on average to reach a minimum prosperity threshold of US$25 per person per day. Where there has been progress in poverty reduction and shared prosperity, there is evidence of an increasing ability of countries to manage natural hazards, but climate risks are significantly higher in the poorest settings. Nearly one in five people globally is at risk of experiencing welfare losses due to an extreme weather event from which they will struggle to recover. The interconnected issues of climate change and poverty call for a united and inclusive effort from the global community. Development cooperation stakeholders—from governments, nongovernmental organizations, and the private sector to communities and citizens acting locally in every corner of the globe—hold pivotal roles in promoting fair and sustainable transitions. By emphasizing strategies that yield multiple benefits and diligently monitoring and addressing trade-offs, we can strive toward a future that is prosperous, equitable, and resilient.
  • Publication
    Digital Progress and Trends Report 2023
    (Washington, DC: World Bank, 2024-03-05) World Bank
    Digitalization is the transformational opportunity of our time. The digital sector has become a powerhouse of innovation, economic growth, and job creation. Value added in the IT services sector grew at 8 percent annually during 2000–22, nearly twice as fast as the global economy. Employment growth in IT services reached 7 percent annually, six times higher than total employment growth. The diffusion and adoption of digital technologies are just as critical as their invention. Digital uptake has accelerated since the COVID-19 pandemic, with 1.5 billion new internet users added from 2018 to 2022. The share of firms investing in digital solutions around the world has more than doubled from 2020 to 2022. Low-income countries, vulnerable populations, and small firms, however, have been falling behind, while transformative digital innovations such as artificial intelligence (AI) have been accelerating in higher-income countries. Although more than 90 percent of the population in high-income countries was online in 2022, only one in four people in low-income countries used the internet, and the speed of their connection was typically only a small fraction of that in wealthier countries. As businesses in technologically advanced countries integrate generative AI into their products and services, less than half of the businesses in many low- and middle-income countries have an internet connection. The growing digital divide is exacerbating the poverty and productivity gaps between richer and poorer economies. The Digital Progress and Trends Report series will track global digitalization progress and highlight policy trends, debates, and implications for low- and middle-income countries. The series adds to the global efforts to study the progress and trends of digitalization in two main ways: · By compiling, curating, and analyzing data from diverse sources to present a comprehensive picture of digitalization in low- and middle-income countries, including in-depth analyses on understudied topics. · By developing insights on policy opportunities, challenges, and debates and reflecting the perspectives of various stakeholders and the World Bank’s operational experiences. This report, the first in the series, aims to inform evidence-based policy making and motivate action among internal and external audiences and stakeholders. The report will bring global attention to high-performing countries that have valuable experience to share as well as to areas where efforts will need to be redoubled.
  • Publication
    Global Economic Prospects, January 2025
    (Washington, DC: World Bank, 2025-01-16) World Bank
    Global growth is expected to hold steady at 2.7 percent in 2025-26. However, the global economy appears to be settling at a low growth rate that will be insufficient to foster sustained economic development—with the possibility of further headwinds from heightened policy uncertainty and adverse trade policy shifts, geopolitical tensions, persistent inflation, and climate-related natural disasters. Against this backdrop, emerging market and developing economies are set to enter the second quarter of the twenty-first century with per capita incomes on a trajectory that implies substantially slower catch-up toward advanced-economy living standards than they previously experienced. Without course corrections, most low-income countries are unlikely to graduate to middle-income status by the middle of the century. Policy action at both global and national levels is needed to foster a more favorable external environment, enhance macroeconomic stability, reduce structural constraints, address the effects of climate change, and thus accelerate long-term growth and development.