Seminar paper from the year 2015 in the subject Business economics - Investment and Finance, University of applied sciences, Nürnberg, language: English, abstract: This work is divided into different parts. The first part Framework and theoretical background introduces the business life cycle concept and the definition of the basic terms Start Up, finance and investment. Furthermore the first part presents briefly the different types of financing. The second section Financing sources of Start Ups goes much depper into the different financing types for Start Ups by differencing according to equity financing, debt financing, internal and external financing. The third part Categorization of Start Ups attempts to find similarities in the different business models of Start Ups in order to segment the Start Ups. The fourth chapter Results tries to match the results of section two Financing sources of Start Ups and section three Categorization of Start Ups in order to answer the research question. The last section Conclusion will complete and limit the entire work and will give recommendation for further research.