Pension is a subject that soon or later affects all individuals in society. Within the premium pension system mutual fund fees are an important factor to consider since it can erode savings. This study investigates fees and performance of all mutual funds that existed in the premium pension system (PPS) between 2004 and 2016. Risk-adjusted performance and fees are adjusted to reflect the discount that is given for fees within the premium pension system to reflect actual investor experiences. The data needed to make these adjustments were obtained from the Swedish Pension Agency. The main purpose of this study is to investigate if there is a relationship between fee and risk-adjusted return within the Swedish premium pension system. Further ...