Cost product is the cost incurred in processing a product. The calculation of cost product is used to determine the selling price. The object of this community development is Yayasan Pendidikan Eben Haezer GKI Salatiga. Even though this object is a non-profit organization, it is still important to determine the cost product to support decision making by both external and internal parties. However, YP Eben Haezer hasn’t yet identified the cost product for its uniform units. Therefore, this community development aims to help YP Eben Haezer calculate cost product of uniforms and attributes as the basis for determining the selling price. The methods used are: (1) Assistance in the preparation of cost product for uniforms (2) Preparation of cost product for YP Eben Haezer uniforms. The results of this dedication include: (1) item code; (2) calculation of cost product; and (3) control recommendations that can improve uniform sales processing flow.