General characteristics of entrepreneurs in coin operated washing machine business, cost structure, return, and problems that occurred along the running of the business had been studied. The financial and accounting data were analyzing data to investigate the net present value, internal rate of return, B/C ratio, and payback period, etc. It, normally, could be divide into 2 parts initial cost and operation cost. The financial data analyzed with 3.125% of the discount rate. The results indicate it net present value of 477,582.51 bath, an IRR value at 32.938% B/C Ratio at 1.35 and payback period will take about 2 years and 2 months.