One of the goals of the company is to seek maximum profit or profit. The Republic Of Soap company is a company that has problems in its production process, namely the limited raw materials it has. Where the soap produced by the Republic Of Soap company is 40 grams of soap, 100 grams of soap, and 125 grams of soap. With these problems, an optimization system for the use of raw materials is needed that can make it easier for the company to determine the maximum profit. The purpose of this study is to determine the amount of optimal benefits from the limited raw materials for soap production that can be obtained by the Republic Of Soap company. This system is able to generate optimal profit by implementing the simplex algorithm. The results of this research can produce 20.20 batches of soap which will be produced later on 40 grams of soap with a total profit of Rp. 4. 251,151.52. System testing shows that the system is able to generate optimal profit, so it can be said that this system is running well