Real Return

A real return is an investment's return after adjusting for inflation. It answers the question that actually matters for your future spending: how much more can this money buy than before? If a portfolio grows 8% in a year when prices rise 3%, its nominal gain is 8% but its real gain — the increase in genuine purchasing power — is roughly 5%.

The distinction between real and nominal returns becomes enormous over long horizons. At 3% inflation, prices roughly double every 24 years, so a retirement plan or a 30-year backtest that ignores inflation dramatically overstates how wealthy an investor really becomes. A dollar of portfolio value in 2056 is worth far less than a dollar today, and only real returns strip that illusion away.

Real returns are especially critical for anyone living off a portfolio. A sustainable safe withdrawal rate has to be defined in real terms, because a retiree's cost of living rises with inflation even as they draw income. This is why the withdrawal tools on this site hold spending constant in today's dollars and grow the portfolio at a real rate — the balances shown reflect purchasing power, not inflated future numbers.

Certain assets are designed specifically to defend real returns. TIPS adjust their principal with inflation, and historically stocks, real estate, and commodities have offered varying degrees of inflation protection. When comparing strategies across different economic eras, always confirm whether returns are quoted in real or nominal terms — the simulator on this site offers a toggle between the two precisely because the difference is so decision-relevant.