This self-archived version contains data and source code used for: Jahn N, Tullney M. A study of institutional spending on open access publication fees in Germany. *PeerJ*. 2016;4: e2323. [http://doi.org/10.7717/peerj.2323](http://doi.org/10.7717/peerj.2323]) <br/> This release has been made available via GitHub:[https://github.com/njahn82/paper_openapc/releases/tag/final](https://github.com/njahn82/paper_openapc/releases/tag/final) Please cite our paper when using the data.