This study aims to develop a book publishing transaction information system and author’s royalty calculation at CV Raditeens. CV Raditeens is one of the book publishers that serve book publishing by self publishing. Issuance transactions require too much time for the confirmation process and the data that is owned is prone to errors. This study used Research and Development model with primary data obtained by interview and observation. System development is carried out using prototyping methods with system modeling using the Unified Modeling Language (UML). The result of this research is an information system website-based that is built with the PHP programming language and MySQL database using the CodeIgniter framework. This information system facilitates the process of book publishing transactions and the calculation of author's royalty with a website-based presentation that can also function as an online bookstore. This developed information system produces transaction report, book published report, and royalty report with master data are service, category, user, and employee.