Why it matters
A higher account value can still buy little more if prices have risen too. Adjusting for inflation separates nominal amounts from changes in purchasing power.
A worked example
A 6% nominal gain with 4% inflation gives (1.06 ÷ 1.04) − 1 ≈ 1.92% real return, before taxes and fees.
Illustrative example · simplified assumptionsA common mistake
Interpreting a nominal gain as the same gain in purchasing power.
Where the idea needs care
Subtracting inflation from nominal return is an approximation; the ratio is exact for these stated rates.
Apply the idea
Explain this concept using a different example from your spending, work, business or a policy debate. State what stays fixed and what could change the result.
Sources and further study
Examples and explanations by Alibomics. Numeric illustrations are not current market quotations.