Restarting European Long-Term Investment Finance (RELTIF) is a joint project organised by CEPR and Assonime, and supported by Emittenti Titoli. It was launched in response to the low level of investment that has been observed across Europe and the policies that have been adopted to deal with it. This Green Paper is the first output of the project and sets the stage for its future research. The paper describes the significant changes in financing of corporations that have occurred in Europe over the last few years and the reasons for them.