The penalty relates to ICICI Lombard's failure to document ₹7.10bn (US$75.1m) of sales, marketing and business support spending in FY2019, part of which went to agents of other insurers.
Both agencies said the benefit will hinge on how the five state-owned (re)insurance groups deploy the money, with heavier equity investment raising asset risk.
First overhaul of the Insurance Law in more than a decade would also broaden insurers' permitted investments and lift fines to as much as 10 times illegal gains.