In the discussion about the financing or equity capitalization of medium-sized companies, the possibilities for borrowing, new forms of financing and thus the changing framework conditions for lending to small and medium-sized companies are currently coming to the fore. In this context, various institutions publish corresponding study results and key figures (reports), some of them regularly. This article therefore provides a brief overview of the information and data sources that have frequently been used in recent years to explain the financing behavior and financing structures of SMEs.