Today, the current population is increasing the need for more spending, not just in a single country. The expenditure would increase in both the public and private sectors are also more household expenses. Individual tax expenditures is that every time we want to buy. We need to a study of the expenses in a month of Matthayomsuksa 5/3 students in Chak Kham Khanathon Lamphun School . Trust that is paid in one month, how much and to conclude that those who have the most expenses and help. resolve on the amount of expenditure