(53)Small and non-complex institutions should be given the opportunity to use a simplified version of the NSFR requirement. A simplified, less granular version of the NSFR should involve collecting a limited number of data points, which would, reduce the complexity of the calculation for those institutions in accordance with the principle of proportionality, while ensuring that those institutions still maintain a sufficient stable funding factor by means of a calibration that should be at least as conservative as the one of the fully-fledged NSFR requirement. However, competent authorities should be able to require small and non-complex institutions to apply the fully-fledged NSFR requirement instead of the simplified version.