Proceeding of 6 th ICITB 2020 – Indonesia, 8 December 2020 Page | 59 ISSN : 2460 – 7223 ©2020 Designing and Implementing Car Rental System Rosha Assyifa 1 , Shen Jian Tao (沈建涛) 2 , Suhendro Yusuf Irianto 3 1,3 Informatics And Business Institute Darmajaya, Faculty of Science Computer, Indonesia Z.A. PagarAlam street, No. 93 Lampung - Indonesia 35142 Phone.(0721) 787214 Fax. (0721) 700261 2 Department of Computing, Nantong Vocational University, China Chongchuan District, Nantong, Jiangsu-Tiongkok Phone +86 513 8501 5555 e-mail : ℎ08@.  1 , 739683390@.  2 , ℎ@. .  3 Abstract: Car rental was one of the business entities in the field of four-wheeled vehicle/cars rental services. The information system for borrowing and returning cars in Lampung was considered effective because the data of borrowing and returning cars and the daily transactions were recorded and reported manually - in the written form such as books and paper – so that this system was inefficient in terms of saving time, energy, and materials. The objective of this study was to build the website-based information system for car rental businesses in Lampung. The method used in this study was a structured approach method through the prototype development. The data collecting techniques used in this study was observation and interviews. The analysis and designing tools used in this study were the case diagrams, 0- levelled data flow diagrams, and 1-levelled flow diagrams. The supporting software used in this study was PHP and MySQL database. The sublime was an idea used to expanding the web application using PHP. This tool was facilitated to use to symbol, word, or line using a keyboard shortcut in a quick way. The result of this study was that the information system for borrowing and renting the car for car rental service was expected to facilitate the employees in managing the data of customers, borrowing and returning cars, and reducing errors from the data records and reports. Keywords: Information Systems, Car Rental, Borrowing, Refund. 1. INTRODUCTION The use of IT is cutting-edge and innovative, such as the integration of ICT (information and communications technology) into business processes, complete digital information and communication systems and in large enterprises, ICT as a formal responsibility with dedicated managers. Therefore, there is little or no evidence to support the adoption or ladder model, where companies develop additional e-commerce models, ultimately reaching a position where they transact online sales. Strong evidence emerges from research that internet adoption is not a gradual process. On the other hand, most companies adopt ICT technology to suit their business model, and only change their ICT provision when new technology that is useful to them becomes available [1]. The dataset has been compiled mainly from the Phish Tank archives, Miller Smiles archives and Google search operators. One of the challenges faced in this study is the lack of reliable training data sets [2]. In this paper, we are interested to the car rental business. this is a business in the transportation service sector which is currently developing, but in general the data management is still done manually. At first the manual system was not a problem, but along with the increasing number of cars owned and the increasing number of tenants who made transactions, the data being managed was getting bigger, thus managing data manually became ineffective and efficient again, so as to ensuring accuracy in recording transactions, security in