How much investment in FD is needed to earn ₹10,000 monthly interest?

To earn ₹10,000 in monthly interest from a non-cumulative fixed deposit, an investor may need to invest around ₹15 lakh-₹20 lakh, depending on the bank's interest rate. For instance, at a 7% annual interest rate, the required investment would be roughly ₹17.14 lakh. Higher interest rates reduce the required investment amount, while taxes can lower actual returns.