Based on the goal set in the beginning of the work and formulated tasks, the research is devoted to the study of theoretical and normative bases of accounting and analysis of innovative costs of the enterprise. The essence of innovation and innovation costs as an object of accounting and analysis is investigated. The actual problems of accounting of expenses on innovations are analyzed. The methodical bases of the enterprise innovative cost analysis are investigated. Investigating the current issues of accounting for innovation costs before accounting for innovation costs has identified a key direction - displaying innovation costs as a separate accounting entity. The study provides recommendations on how to improve accounting and analysis of innovation costs, namely, the authors proposed an accounting approach that provides for the preliminary creation of additional analytical sections on the expense accounts and in the accounts, which keep records of capital investment and proposed to analyze innovation costs as part of a comprehensive analysis of innovation activity of the enterprise. An algorithm for analyzing enterprise innovation has been developed, which includes five stages of analysis, a system of indicators for analysis of innovation, a statement of sources of financing of innovation-investment activity and a statement of the volume of innovation costs, which will provide a well-reasoned and reasonable estimate of costs.