A Social Accounting Matrix (SAM) is a representation of an economy that shows the circular flow of all transfers and real transactions between sectors and institutions. The SAM, which is a square matrix, describes the flows of incomes from activities, taking the form of factor remunerations, that are consequently received by the households for consumption on goods and services. The accounts in the SAM are the production activities, commodities, institutions, and factors of production. According to data availability, the production activities can be further disaggregated to include more detailed information on sub-sectoral or regional production. Similarly, the factors of production could be differentiated by the level of skills or the location of employment. Households can be disaggregated by income quintiles or by rural and urban residence.

In addition to the unprecedented humanitarian crisis and the creation of space for militant groups, the conflict in Yemen is also taking a heavy toll on the economy. According to estimates from the International Monetary Fund (IMF 2018), the Yemeni economy may have contracted by about 40 percent between end-2014 and 2018. Sector-specific information on physical damages from the World Bank’s Yemen Dynamic Needs Assessment (World Bank 2018) suggests that damage was worst in the housing sector, where 33 percent of housing units have been either partially damaged or completely destroyed. The education, health, transport, and water, sanitation and hygiene (WASH) sectors have also been severely affected, with overall damage ranging from 27 percent (transport) to 31 percent (WASH). The power and ICT sectors have been somewhat less affected, with estimated damage levels of 13 percent and 11 percent, respectively.

Evidence-based planning for post-conflict reconstruction is often constrained by missing data and the shortcomings of conventional analytical methods. To overcome these constraints, we use economy-wide modeling methods to model the impact of war and reconstruction possibilities for the economy of Yemen. We first calibrate the model to pre-conflict data (2014) and validate it by replicating the most recent available dynamic needs assessments for Yemen that were elaborated by the World Bank. We then report model scenario results for unobserved development indicators, such as estimates for sector-level growth, employment, and poverty. For the post-conflict period, we use the assumptions of a recent dynamic needs assessment and assume gradual reconstruction of the war-induced damages by the target year 2024. Then we focus on uncertain institutional factors and investigate their importance for the country’s socio-economic development. Finally, we assess the potential structural characteristics of Yemen’s economy in the year 2024 and analyze potential risks and trade-offs associated with government’s institutional performance and the implications these have for the pace of post-conflict reconstruction.

The purpose of this paper is used to document the different steps followed to construct the 2010/11 Social Accounting Matrix for Ethiopia. The SAM is an extension of the Standard Nexus Structure. It consists of 63 activity sectors, 67 commodity sectors, three types of factors of production: labor (rural and urban disaggregated by level of education), land, and capital (disaggregated by crops, livestock, mining and other sectors). The household sector is divided spatially into urban and rural households. Rural households are further disaggregated into households that earn crop and/or livestock incomes (i.e., farm households) and those that do no earn incomes from either source (i.e., nonfarm households). Households are further disaggregated into per capita expenditure quintiles. This SAM allows analyzing issues at the detailed level and to better understand the potential impacts of policy changes for both better off and more vulnerable households.

The 2014 Myanmar Social Accounting Matrix (SAM) follows IFPRI's Standard Nexus SAM approach, by focusing on consistency, comparability, and transparency of data. The Nexus SAMs available on IFPRI's website separates domestic production into 42 activities. Factors are disaggregated into labor, agricultural land, and capital, with labor further disaggregated across three education-based categories. The household account is divided into 10 representative household groups: Rural and urban households across per capita consumption quintiles. Nexus SAMs support the improvement of model-based research and policy analysis in developing countries and allow for more robust cross-country comparisons of national economic structures, especially agriculture-food systems.

The Central Agency for Public Mobilization and Statistics (CAPMAS) is pleased to present the first regionalized social accounting matrix (SAM) for Egypt. This SAM marks a major milestone in “localizing” development research and policy in Egypt and is expected to be most valuable for the development, implementation, and assessment of Egypt’s national and local development plans, like Egypt’s Sustainable Development Strategy 2030. In addition to standard SAMs, which combine many national datasets from institutions such as Central Banks, Ministries of Finance and Agriculture, and Statistical Bureaus, this regionalized SAM makes extensive use of sub-national level information such as the Economic Survey and Household Income and Expenditure Survey (HIECS) produced by CAPMAS, regional GDP estimates by the Ministry of Planning, Monitoring and Administrative Reform, and the Agricultural Bulletins with information at the Governorate level produced by the Ministry of Agriculture and Land Reclamation. With this data it becomes possible to provide a detailed, socioeconomic status update for different regions within Egypt. As such, the disaggregated SAM allows for analyzing developmental issues at regional level and to better understand the potential impacts of policy changes at the local level.

Nexus SAMs aims to improve the quality and standardize the construction process of SAMs using a standard toolkit that enables tracing data sources and assumptions. The unified structure of nexus SAMs allows for more robust cross-country comparisons of economies, especially the sectoral composition, allocation of government spending and trade orientation. The 2019 SAM for Sudan is a snapshot capturing the structure of the Sudanese Economy and depicting the different transactions between the production activities, factors of production and other income generating and consuming entities in the economy besides the good and services (produced and consumed). The circular flow of income is completed by including the accounts for enterprises, government, and rest of the world. The International Food Policy Research Institute (IFPRI) relied on both international and local data sources to develop the first Nexus SAM for Sudan for the year 2019. The leading domestic data sources are the Central Bureau of Statistics (CBS), the Central Bank of Sudan (CBoS), the Ministry of Finance and Economic Planning (MFEP) and the Ministry of Human Resources Development and Labor (MHRDL). Like other Nexus SAMs, the Sudan SAM puts a strong emphasis on the household accounts by providing details on both income and expenditure sides as well as savings. We used a household income and expenditure survey to disaggregate the household account into income deciles both in rural and urban areas. The SAM also provides disaggregated representation of production activities including 77 activities producing 79 commodities. Production factors included in the Nexus SAM for Sudan are labor, capital, and land. Labor is further classified by location to rural and urban, by gender to male and female, and by the level education to unskilled, semi-skilled and skilled labor. Land and capital factors are left without further disaggregation.