This paper suggests that implementing a capstone course during the second semester of the senior year would be an ideal approach to teaching interpreting in a Japanese language-related department in Taiwan. The capstone course can effectively ensure the articulation between departmental classes, the continuity of students’ lives before and after graduation, and the development of core competencies within the department. The findings indicate that the course designed for aspiring in-house interpreters successfully fulfilled all the essential functions of a capstone course, such as integration, closure, reflection, and transition. These results demonstrate that the implementation of this course can provide valuable feedback for enhancing the department’s foundational and specialized courses, as well as its career guidance initiatives.