KnowraSunk costLinked fromLinked fromThe 11 pages that link to Sunk cost, each with the reason it gives.All 11Related 5Compared with 6Opportunity costCompared with: Unlike opportunity cost, a sunk cost concerns an irreversible past expense, not a forgone alternative.Marginal costCompared with: Sunk expenditures should not determine whether producing one more unit is worthwhile.Marginal analysisCompared with: It should not affect a forward-looking comparison of the costs and benefits of changing course.Fixed costCompared with: A fixed cost is not automatically sunk; avoidability depends on the decision and timing.Variable costCompared with: Variable costs matter to future choices, while sunk costs do not.Cost curveCompared with: Unlike forward-looking marginal costs, it should not determine an incremental output choice.