 In support of the sustainable development goals, the United Nations has called for a data revolution. Vietnam, together with UNU Wider and its partners, have established data sets charting the country's rapid development. Here, Dang Thi Thu Hoi discusses the benefits of a social accounting matrix. Before 2015, Vietnam and Korea have no trade agreement yet, so they asked us to do analysis to see what is the impact. The first and the main set of data is social accounting matrix. Social accounting matrix is a data set which describes the whole economy and the whole interaction between the different entities in the economy. You can imagine that you will have a square matrix, so each row and each column will present for one entity in the economy. For example, one type of industrial producer. This is actually the number, but with all the flow of the income and the flow of expenditure, the flow of the money in the economy. With that data set, we can use it to see the impact of the policy on the household, what's the impact on the producer, and even the impact on the government revenue. So the government will use it as the input information to decide what type of tariff should we ask Korea to reduce for Vietnam. We don't know that this data set exists until the UNU Wider partners come to Vietnam and together with us to develop this social accounting matrix. With the result of the study using the social accounting matrix, Vietnamese governments have signed the trade agreement with Korea with the expectation that we will get more benefits from this trade agreement in terms of economic growth, in terms of the employment and in terms of other social welfare improvements.