The real rate of return is what you actually earn after inflation eats into your returns. If your investment returns 10% but inflation is 6%, your real return is roughly 4%. That 4% represents the actual increase in your purchasing power — the stuff you can buy with your money.
Formula (Fisher equation): Real Return ≈ Nominal Return − Inflation Rate. More precisely: (1 + Nominal) / (1 + Inflation) − 1. This matters enormously over time. At 7% inflation, money loses half its value in just 10 years. If your savings account pays 4% and inflation is 6%, you are losing 2% purchasing power every year.
Historically, US stocks have delivered real returns of about 7% per year (10% nominal minus 3% inflation). Bonds deliver 2-3% real returns. Cash and savings accounts often deliver negative real returns during high-inflation periods. In India, where inflation averages 5-6%, fixed deposits at 6-7% deliver barely 1% real return — equity is essential for real wealth creation.