Proceedings of Eurasia Business Research Conference 4 - 6 June 2015, Nippon Hotel, Istanbul, Turkey, ISBN: 978-1-922069-77-1 Carbon and Material Flow Cost Accounting: Perspectives of an Integration Stefan Nertinger Material and energy costs are the largest costs in German manufacturing firms and are even rising (Statistisches Bundesamt 2014). Also the physical, market and regulatory impacts of climate change caused by CO2 equivalent emissions are increasingly facing challenges. As both costs and emissions have a material base, innovative instruments to control the emissions, costs, material and energy flows are necessary (Franchetti/Apul 2012). Here, we focus on providing the link between methods of management accounting and life cycle assessment. For the development of such instruments practical methods with high flow-oriented management reference are especially suitable. For deeper analysis, the integration of the methods of Carbon Footprinting (CF) in the accounting scheme of Material Flow Cost Accounting (MFCA) is effective. Both methods can be associated with the cluster of instruments of sustainability controlling. Product and Corporate Carbon Footprinting are representative of the ecology-oriented assessment procedures and MFCA for environmental cost management. This raises two methodological challenges. First, the allocation of material and cost flows, in particular the allocation of emissions for both cost units product and nonproduct output of the MFCA. Second, the differentiation and crystallization of the costs which are caused by the carbon emissions: The relevant cost aspects are Carbon Management and Handling costs (expenses for the management, detection and control of CO2-eq emissions, analogous to the concept of waste management costs of MFCA) as well as regulatory costs e. g. by fines or emission trading scheme. As an extension in terms of a broader environmental orientation and sensitization external costs are incorporated in the analysis models of Carbon and material flow cost accounting. This paper describes three different models that combine allocation principles and rules of management accounting and life cycle assessment: a) Carbon as a Cost Unit b) Carbon as NPO c) Hybrid Analysis Carbon Footprinting is integrated into MFCA`s methodological framework. The three models provide a consistent methodology for the analysis of the material and monetary perspective of CO2-eq. in production processes. As a result, it is clear that emissions and costs are the two sides of the same coin. Figure 1 shows the application of the model “Carbon as a Cost Unit” on a section of a real business process. In the context of this application, there is a first evidence for forcing cost and emission reductions through the application of the method. The validity is undoubtedly to be tested by in-depth research and application. _________________________________________ Martin-Luther University Halle-Wittenberg (Germany), School of Economics and Business, Große Steinstraße 73, 06108 Halle (S), Stefan.nertinger@wiwi.uni-halle.de Proceedings of Eurasia Business Research Conference 4 - 6 June 2015, Nippon Hotel, Istanbul, Turkey, ISBN: 978-1-922069-77-1 Figure 1: Implementation of the model Carbon as a Cost Unit on a reference process (source: own)