In addition to the KfW, each German state has its own development bank financing projects within the respective state. They offer own loan programs, especially targeted at start-ups and growing companies.
State development bank loans are generally tailored to meet the requirements of small and medium-sized enterprises (according to the EU Commission's SME definition).
Loans are collateralized with the usual securities. Applications are made through the investor's private bank to the respective state development bank. Interest-reduced loans may constitute a subsidy and can usually be combined with other public funding. Please be aware, that the total amount of cash incentives available may be reduced when combined with other programs.