With an expected 12% rate, SIP in equity mutual funds with ₹10,000/month will generate ₹1 crore in a little less than 21 years. At the current 7.1% annual interest rate, a PPF will take 28 years, however, it'll have to be extended after it matures at 15 years. A gold ETF with 13.46% rate of return will take 14 years.