Publication: Changing Contributions of Different Agricultural Policy Instruments to Global Reductions in Trade and Welfare
Loading...
Published
2010-06-01
ISSN
Date
2012-03-19
Author(s)
Croser, Johanna
Editor(s)
Abstract
Trade negotiators and policy advisors are keen to know the relative contribution of different farm policy instruments to international trade and economic welfare. Nominal rates of assistance or producer support estimates are incomplete indicators, especially when (especially in developing countries) some commodities are taxed and others are subsidized, in which case positive contributions can offset negative contributions. This paper develops and estimates a new set of more-satisfactory indicators to examine the relative contribution of different farm policy instruments to reductions in agricultural trade and welfare, drawing on recent literature on trade restrictiveness indexes and a recently compiled database on distortions to agricultural prices for 75 developing and high-income countries over the period 1960 to 2004. Results confirm earlier findings that border taxes are the dominant instrument affecting global trade and welfare, but they also suggest declines in export taxes contributed nearly as much as cuts in import protection to global welfare gains from agricultural policy reforms since the 1980s.
Link to Data Set
Citation
“Croser, Johanna; Anderson, Kym. 2010. Changing Contributions of Different Agricultural Policy Instruments to Global Reductions in Trade and Welfare. Policy Research working paper ; no. WPS 5345. © World Bank. http://hdl.handle.net/10986/3831 License: CC BY 3.0 IGO.”
Digital Object Identifier
Associated URLs
Associated content
Other publications in this report series
Publication Climate and Social Sustainability in Fragility, Conflict, and Violence Contexts(Washington, DC: World Bank, 2026-01-07)Climate change is widely recognized as a driver of violent conflict, but its broader social effects remain less understood. Ignoring these dimensions risks a vicious cycle where climate policies might undermine socially just adaptation. Evidence is still limited on how climate shocks influence political participation, trust, or migration. This paper helps fill that gap by examining links between climate change, conflict, and social sustainability, with a focus on inclusion, resilience, cohesion, and legitimacy. Using secondary data from 2019–24, the study applies simple correlation-based methods to test three hypotheses on the nature, severity, and composition of these associations. The analysis combines multiple climate impact measures, new conflict classifications, recent social sustainability frameworks, and controls for population and geography. The results reveal strong correlations—not causation—between climate events and contexts of fragility, conflict, and violence. Climate impacts are most pronounced in both national and subnational conflict settings. The study also finds robust links between fragility, conflict, and violence and low levels of social sustainability, reflecting its role as both a driver and consequence of conflict. Some dimensions—such as violent events and insecurity—appear weaker in areas most affected by climate shocks. Two of the hypotheses are supported, and one remains inconclusive.Publication The Macroeconomic Implications of Climate Change Impacts and Adaptation Options(Washington, DC: World Bank, 2025-05-29)Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.Publication Institutional Capacity for Policy Implementation: An Analytical Framework(Washington, DC: World Bank, 2026-01-07)State capacity is an important prerequisite for policy implementation, yet at the country level it is difficult to measure, assess, and reform. This paper proposes a focus on institutional capacity: the ability of public institutions to implement the specific policy mandates for which they are responsible. Based on a review of existing literature, the paper defines the different dimensions that compose institutional capacity and groups them into two cross-cutting categories: organizational dimensions (personnel, financial resources, information systems, and management practices) and governance dimensions (transparency, independence, and accountability). The paper proposes measures for organizational and governance dimensions using existing data, shows intra-institutional variation of these measures within countries, and discusses how new data could be collected for better measurement of these concepts. Finally, the paper illustrates how the framework can be used to diagnose the sources of common problems related to weak policy implementation.Publication South Africa’s Fragmented Cities: The Unequal Burden of Labor Market Frictions(Washington, DC: World Bank, 2026-01-08)Using high-resolution administrative, census, and satellite data, this paper shows that South African cities are characterized by spatial mismatches between where people live and where jobs are located, relative to 20 global peers. Areas within 5 kilometers of commercial centers have 9,300 fewer residents per square kilometer than expected, which is 60 percent below the global median. Poor, dense neighborhoods are most affected. In Johannesburg, a 10-percentile increase in distance from the nearest business hub corresponds to a 3.7-percentile drop in asset wealth (a proxy of household wellbeing) and 4.9-percentile drop in employment. In Cape Town, the declines are 4.0 and 3.7 percentiles, respectively. Employment is 87 percent lower in the poorest decile than the richest in Johannesburg and 61 percent lower in Cape Town. These findings suggest that South Africa’s spatial organization of people and economic activity constrains agglomeration and reinforces inequality. This methodology provides a scalable and standardized data-driven framework to analyze spatial accessibility and agglomeration frictions in complex, data-constrained urban systems.Publication Investment in Emerging and Developing Economies(Washington, DC: World Bank, 2026-01-07)The world faces a pressing challenge to meet key development objectives amid slowing growth and rising macroeconomic and geopolitical risks. With the number of job seekers rising rapidly, infrastructure shortfalls continuing to be large, and climate costs mounting, the case for a significant investment push has never been stronger. Yet the capacity to respond in many emerging markets and developing economies has eroded. Since the global financial crisis, investment growth has slowed to about half its pace in the 2000s, with both public and private investment weakening. Foreign direct investment inflows—a critical source of capital, technology, and managerial know-how—have also fallen sharply and become increasingly concentrated, leaving low-income countries with only a marginal share. The risks of further retrenchment are significant, as trade tensions, policy uncertainty, and elevated debt levels continue to weigh on investment. Reigniting momentum will require ambitious domestic reforms to strengthen institutions, rebuild macro-fiscal stability, and deepen trade and investment integration—the foundations of a supportive business climate. At the same time, international cooperation is indispensable. A renewed commitment to a predictable system of cross-border trade and investment flows, combined with scaled-up financial support and sustained technical assistance, is essential to help emerging markets and developing economies—especially low-income countries and economies in fragile and conflict situations—bridge financing gaps and implement the domestic reforms needed to restore investment as an engine of growth, jobs, and development.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication Welfare- and Trade-Based Indicators of National Distortions to Agricultural Incentives(World Bank, Washington, DC, 2009-03)Despite reforms over the past quarter-century, world agricultural markets remain highly distorted by government policies. Traditional indicators of those price distortions such as the nominal rate of assistance and consumer tax equivalent provide measures of the degree of intervention, but they can be misleading as indicators of the true effects of those policies. By drawing on recent theoretical literature that provides indicators of the trade- and welfare-reducing effects of price and trade policies, this paper develops more-satisfactory indexes for capturing distortions to agricultural incentives. It then exploits the agricultural distortion database recently compiled by the World Bank to generate estimates of them for both developing and high-income countries over the past half century, based on a sample of 75 countries that together account for all but one-tenth of the world's population, gross domestic product (GDP) and agricultural production. While they are still only partial equilibrium measures, they provide a much better approximation of the true trade and welfare effects of sectoral policies without needing a formal model of global markets or even price elasticity estimates.Publication Five Decades of Distortions to Agricultural Incentives(World Bank, Washington, DC, 2009-03)This chapter begins with a brief summary of the long history of national distortions to agricultural markets. It then outlines the methodology used to generate annual indicators of the extent of government interventions in markets, details of which are provided in Anderson and appendix A. A description of the economies under study and their economic growth and structural changes over recent decades is then briefly presented as a preface to the main section of the chapter, in which the nominal rates of assistance and consumer tax equivalents (NRA and CTE) estimates are summarized across regions and over the decades since the 1950s. These estimates are discussed in far more detail in the regional chapters that follow. A summary is also provided of an additional set of indicators of agricultural price distortions presented in chapter eleven that are based on the trade restrictiveness index first developed by Anderson and Neary (2005). In chapter twelve the focus shifts from countries to commodities, and all the various distortion indicators are used to provide a sense of how distorted are each of the key farm commodity markets globally. Then chapter thirteen uses the study's NRA and CTE estimates to provide a new set of results from a global economy-wide model that attempts to quantify the impacts on global markets, net farm incomes and welfare of the reforms since the early 1980s and of the policies still in place as of 2004. The chapter concludes by drawing on the lessons learned to speculate on the prospects for further reducing the disarray in world agricultural markets.Publication Global Distortions to Agricultural Markets : New Indicators of Trade and Welfare Impacts, 1955 to 2007(2009-03-01)Despite recent reforms, world agricultural markets remain highly distorted by government policies. Traditional indicators of those price distortions can be poor guides to the policies' economic effects. Recent theoretical literature provides indicators of trade and welfare-reducing effects of price and trade policies which this paper builds on to develop more-satisfactory indexes. The authors exploit a new Agricultural Distortion database to generate estimates of them for developing and high-income countries over the past half century. These better approximations of the trade and welfare effects of sector policies are generated without a formal model of global markets or even price elasticity estimates.Publication Novel Indicators of the Trade and Welfare Effects of Agricultural Distortions in OECD Countries(2010-08-01)Agricultural markets in OECD countries have long been highly distorted by government policies. Traditional weighted average aggregates of the price distortions involved, such as producer and consumer support estimates can be poor indicators of the trade restrictiveness and economic welfare losses associated with them, especially if a country's support estimates vary a lot across the product range. Certainly estimates of trade and welfare effects of price supports can be obtained from sector or economy-wide models using price elasticity estimates, but the results can be contentious if there is no consensus on what model specification and elasticity parameters to use. This paper shows that, if there is a willingness to accept simple assumptions about elasticities, it is possible to generate indicators of the welfare and trade restrictiveness of agricultural policies using no more than the price and quantity data needed to generate producer and consumer support estimates. These new indexes thus provide an attractive supplement to the current policy monitoring regime developed by the OECD Secretariat.Publication Agricultural Distortions in Sub-Saharan Africa : Trade and Welfare Indicators, 1961 to 2004(2010-06-01)For decades, agricultural price and trade policies in Sub-Saharan Africa have hampered farmers contributions to economic growth and poverty reduction. Although there has been much policy reform over the past two decades, the injections of agricultural development funding, together with ongoing regional and global trade negotiations, have brought distortionary policies under the spotlight once again. A key question asked of those policies is: How much are they still reducing national economic welfare and trade? Economy-wide models are able to address that question, but they are not available for many poor countries. Even where they are, typically they apply to just one particular previous year and so are unable to provide trends in effects over time. This paper provides a partial-equilibrium alternative to economy-wide modeling, by drawing on a modification of so-called trade restrictiveness indexes to provide theoretically precise indicators of the trade and welfare effects of agricultural policy distortions to producer and consumer prices over the past half-century. The authors generate time series of country level indexes, as well as Africa-wide aggregates. They also provide annual commodity market indexes for the region, and a sense of the relative importance of the key policy instruments used.
Users also downloaded
Showing related downloaded files
Publication Natural Disasters, Poverty and Inequality(Taylor and Francis, 2021-10-28)Conventional risk assessments underestimate the human and macroeconomic costs of disasters, leading to inefficient risk management strategies. This happens because conventional assessments focus on asset losses, neglecting important relationships between vulnerability and development. When affected by a hazard, poor households take longer to recover from disasters and are more likely to face long-term consequences. Forced to manage trade-offs between essential consumption and reconstruction, these households are more likely to face persistent health or education costs. This chapter proposes a review of existing research into the natural disaster-poverty-inequality nexus and the various metrics that can be used to measure disaster impacts, such as recovery times, economic (income or consumption) losses, poverty incidence, inequality, and welfare or well-being losses. Each of these metrics provides a different perspective on disaster costs and suggest different spatial and sectoral priorities for action. Focusing on the concepts of well-being losses and socioeconomic resilience, this chapter shows how more comprehensive accounting of disaster impacts can better inform disaster risk management and climate change adaptation strategies and support their integration into development and poverty-reduction policies.Publication Assessing the Extent of Monetary Poverty in the Syrian Arab Republic after a Decade of Conflict(Washington, DC: World Bank, 2024-03-26)The data for estimating monetary poverty in the Syrian Arab Republic are outdated. In the context of data scarcity, this paper aims to propose a methodological approach to address the knowledge gap regarding welfare in Syria over the past decade. In particular, the analysis provides (i) updated pre-conflict poverty baseline estimates based on grouped data from the 2009 Household Income and Expenditure Survey; (ii) supporting evidence on the viability of using Humanitarian Needs Assessment Programme Demographic and Water Supply, Sanitation, and Hygiene 2022 survey data for the estimation of monetary poverty in 2022; and (iii) supporting theoretical and empirical evidence to identify growth in per capita gross domestic product in current prices deflated by Consumer Price Index as the best metric to project poverty using a nowcasting approach. Based on this analysis, the paper proposes to use 2022 Humanitarian Needs Assessment Programme–based poverty estimates to anchor the most recent estimates to the best available evidence, and to interpolate the poverty evolution obtained from back-casting 2022 and nowcasting 2009 poverty estimates over 2009–22 using the growth rate of per capita gross domestic product in current prices, deflated by the Consumer Price Index with a passthrough of 0.7.Publication 1 World Manga : Passage 1. Poverty - A Ray of Light(San Francisco: VIZ Media and World Bank, 2006)The first World Manga series offers a premise where the hero must grapple with social problems of a global magnitude that are set in the real world. Fifteen year-old orphan Rei survives by his wits and guts on the mean streets of the world. His fortunes take a strange turn when he meets a trainer wielding some powerful transformational magic who offers to coach him to achieve his dream of becoming the greatest marital artist in the world! But it seems Rei's trainer is more interested in developing his mind, spirit and ugh! Heart than his thrashing, raging, and fighting moves! The stakes get higher when Rei meets a young woman fighting just to survive! Can Rei meets vanquish the specter of poverty? This publication includes some of the following headings: poverty - a ray of light; HIV/AIDS - first love; child soldiers of boys and men; global warming - the lagoon of the vanishing fish; girl's education - life lessons; corruption - broken trust; and interview with the author of the first World Bank Manga (passage one to passage six).Publication Digital Africa(Washington, DC: World Bank, 2023-03-13)All African countries need better and more jobs for their growing populations. "Digital Africa: Technological Transformation for Jobs" shows that broader use of productivity-enhancing, digital technologies by enterprises and households is imperative to generate such jobs, including for lower-skilled people. At the same time, it can support not only countries’ short-term objective of postpandemic economic recovery but also their vision of economic transformation with more inclusive growth. These outcomes are not automatic, however. Mobile internet availability has increased throughout the continent in recent years, but Africa’s uptake gap is the highest in the world. Areas with at least 3G mobile internet service now cover 84 percent of Africa’s population, but only 22 percent uses such services. And the average African business lags in the use of smartphones and computers as well as more sophisticated digital technologies that catalyze further productivity gains. Two issues explain the usage gap: affordability of these new technologies and willingness to use them. For the 40 percent of Africans below the extreme poverty line, mobile data plans alone would cost one-third of their incomes—in addition to the price of access devices, apps, and electricity. Data plans for small- and medium-size businesses are also more expensive than in other regions. Moreover, shortcomings in the quality of internet services—and in the supply of attractive, skills-appropriate apps that promote entrepreneurship and raise earnings—dampen people’s willingness to use them. For those countries already using these technologies, the development payoffs are significant. New empirical studies for this report add to the rapidly growing evidence that mobile internet availability directly raises enterprise productivity, increases jobs, and reduces poverty throughout Africa. To realize these and other benefits more widely, Africa’s countries must implement complementary and mutually reinforcing policies to strengthen both consumers’ ability to pay and willingness to use digital technologies. These interventions must prioritize productive use to generate large numbers of inclusive jobs in a region poised to benefit from a massive, youthful workforce—one projected to become the world’s largest by the end of this century.Publication Antidumping Mechanisms and Safeguards in Peru(World Bank, Washington, DC, 2005-07)Peru's experience in the application of antidumping and safeguard measures is characterized by a radical change in the philosophy and procedures of trade at the beginning of the 1990s, and by an increasing use of these mechanisms. Trade liberalization was accompanied by the liberalization of foreign currency transactions and of financial and labor markets. Also, the internal revenue administration was modernized, institutions for regulation and competition defense were created, and state enterprises were transferred to private owners or concessionaires. New laws and institutions were created to regulate markets, including INDECOPI, a novel government agency charged with antimonopoly regulation and consumer defense, and which houses the Antidumping and Subsidies Commission. This highly autonomous and technical Commission became the central player in the implementation of WTO rules and procedures for fair trade. Since the reform was launched, a total of 81 trade protection cases have been presented, of which 57 were followed by a dumping investigation. The application of antidumping duties was approved for 29 of the cases investigated. Only two cases of safeguard investigations were recorded, one of which (Chinese textile clothing articles) is still in the negotiation phase. This paper reviews that case experience in detail, concluding that Peru has clearly differentiated between unfair competition and dumping on the one hand, and damage and safeguards on the other, and has applied strict technical criteria to the former and broader political considerations to the latter. Despite recent indications of a partial retreat from those principles, the decade-old reform is expected to last.