The purpose of this research is to study the feasibility of investment. And analyze the financial return for growers, rubber and palm oil. As a tool to assist in investment decision. Using the information in the education of farmers in phunphin District, Kanchanaburi Province, an area of 20 rai. The investment on rubber and palm oil as the 20 years. It also analyzes the investment risk when changing the price of rubber and palm oil. In this research the financial index 4 type: net present value (Net Present Value: NPV) reward ratio of the project. (Internal Rate of Return: IRR) ratio of the present value of return on investment (Benefit Cost Ratio: BCR) and payback period. (Payback Period: PB) is divided into 3 case is the case 1 rubber planting case 2 oil palm planting and case 3 Comparison between rubber plantation and palm oil. Including considering intercropping rubber and oil palm to generate income and reduce the risk for farmers during the waiting for the harvest.