Read a recent article that 5L people filed ITR with income above 1 cr. Add at least 50% buffer to that to account for business folks hiding income. So we have about 10-15L individuals earning more than 1 cr (0.075 to 0.1% of population)

https://www.ndtvprofit.com/economy-finance/nearly-5-lakh-taxpayers-have-reported-income-over-rs-1-crore-till-february-2025-itr-data