Patchouli oil is an essential oil obtained by distilling all parts of the patchouli plant. This oil has good prospects in several industries, such as perfume, cosmetics, and insect repellent. Although this commodity has potential opportunities in foreign markets, several problems were found in oil refinings, such as unstable raw material prices and transportation costs. This research was conducted at the Agro Patchouli Oil Refining Business in Tompira, Petasia Timur District, North Morowali Regency. The determination of refining business was done purposively. There were two data used in this study, primary data and secondary data. The analysis used to determine the objectives to be achieved in this study is Sensitivity Analysis taking into account Net Present Value (NPV), Internal Rate of Return (IRR), and Net Benefit Cost Ratio (Net B/C). The result of calculating the positive NPV value was IDR 31,450,688; the IRR value was 25.80%; and the Net B/C value was 1.28. Sensitivity analysis shows that the Agro Patchouli Oil Refining Business is still profitable even though transportation costs have increased by 33% or the greatest change in patchouli raw material prices is 5%.