This report presents the results of a benchmark study on innovative fuels for fast reactors using fuel performance codes. Irradiation results were shared among participants of the expert group and code calculations were performed to gain further insights on the fuel behaviour. Each participating institution used its own fuel performance code. Code-to-code and code-to-experiment comparisons are expected to provide data on and improve understanding of the effects of minor actinides on fuel behaviour. In conclusion, the need for improving codes will be evaluated and the need for new experimental data identified in order to finalise the code validation.