EarnFree original research: SIP vs Fixed Deposit vs Gold vs Real Estate 10-year returns in India. Nifty 50 SIP CAGR 12.4% vs FD 6.8% — SIP wins by ₹6.7 lakh on ₹10,000/month over 10 years. Bank FD at 30% tax bracket delivers negative real returns. Gold 11.2% CAGR. Full inflation-adjusted comparison table, portfolio allocation framework and data from AMFI, RBI, IBJA, NHB.