Inflation risk is the danger that investment returns fail to keep pace with inflation — eroding the real purchasing power of your savings over time.
Inflation reduces the purchasing power of money over time. If inflation is 6% and your investment returns 5%, your real return is -1% — your money is actually worth less in terms of goods and services it can buy. This is particularly dangerous for investors in very conservative instruments (FDs, savings accounts) who believe they're 'safe' — their nominally positive returns may be negative in real terms. Equity funds, historically, have beaten inflation by 5–8% annually over long periods.
₹1,00,000 today can buy, say, 100 bags of groceries. If inflation runs at 6% annually, those same 100 bags of groceries will cost ₹1,79,000 in 10 years. If your investment only grew to ₹1,50,000 in that time (6% annual return − 6% inflation = 0% real return), you've preserved the nominal value but lost real purchasing power. Inflation risk is the silent wealth eroder that conservative investors often overlook.
Real return = Nominal return − Inflation rate.
FD at 7% vs 6% inflation = 1% real return — barely positive.
Equity funds historically: 12–15% nominal return − 6% inflation = 6–9% real return.
Indexation benefit in debt funds attempts to account for inflation in taxation.