This study aims to analyze and develop a framework that can be used to assess a SMEs’ company’s readiness to implement Enterprise Resource Planning (ERP). This study used qualitative approach with empirical study on relevant researches and case studies at three SMEs manufacturing company in Indonesia. Correspondent from the case study companies are top management officers that will be involved in ERP implementation process. Result from this study is an assessment framework that can be used to assess company’s readiness to implement ERP system. This model consists of three domains, namely technology (e.g. system change, infrastructure, relative benefits, ease-of-use, innovation result, sources, team assignation, team creation, and knowledge and skill), organizational (e.g. aligned objective, process change, top management support, scope, risk planning, feasibility study, consultant, company’s size, and project manager), and environment (e.g. culture, decision making mechanism, communication, competitor, industry type, and partner and target market). The readiness framework then implemented to evaluate the readiness of SME’s and the result shows that the readiest domain is technological and followed by organizational and environment domain. Organizations need to improve their system change, risk planning, feasibility study, communication and partner and target market process to increase the readiness because those indicators are the lowest readiness rate in each domain.