RBI's final rules on scale-based regulation of NBFCs tighten oversight of bank-owned entities, effectively subjecting them to bank-like standards. The central bank said the Rs 1 lakh crore threshold for upper layer NBFCs will now be reviewed every three years, instead of five, allowing quicker response to growth, inflation and emerging risks. But all bank led NBFCs, irrespective of size, will be subject to upper-layer NBFC norms, except listing. NBFCs within bank groups will also have to follow regulations applicable to banks when they undertake similar activities, regardless of their classification.