Poverty incidence can be measured either in absolute or in relative terms. Thailand measures poverty incidence at household level by comparing per capita household income against poverty line—which is the income level that is sufficient for an individual to enjoy the society’s minimum standards of living. If such individual has income less than respected poverty line, he or she is classified as poor. The official poverty line1 uses an absolute concept, based on cost of basic needs—the sum of food and non-food consumption. The food poverty line is given by calculating the cost of obtaining calorie requirements of food baskets. The non-food poverty line is calculated by using the estimated food to total expenditure ratio, adjusted for regional price differences. Hence, it allows comparison across regions and areas. It has been widely used to analyze the poverty profiles in Thailand. Meanwhile, the country also measures well being at village level by using basic minimum need and selected development indicators. Thai’s poverty line is shown in figure 1 below.