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Retirement Opportunity Cost Calculator

See the compound opportunity cost of a major purchase without pretending it decides for you.

Private reflection

Start where you are.

Estimate the compound opportunity cost and delayed investing time associated with a major purchase.

Your answers stay in this browser unless you explicitly share a result link. This is a reflection aid, not a diagnosis or financial recommendation.

Purchase priceThe lump sum you could invest instead.USDMonthly contributionThe amount you expect to keep investing each month.USD/monthTime horizonYears until the comparison point.yearsExpected annual returnA nominal annual return assumption before taxes and fees.%

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Keep a clearer purchase lens

Save a short decision guide for weighing use, cost, values, and future flexibility.

Read the methodology, assumptions, and source notes