Skip to content

Main content

Sunk Cost Incremental Payoff Gap Tool

Sunk cost is disclosed separately and excluded from incremental comparison.

Loading tool…

Description

Return incremental net payoff and a sunk-cost comparison.

Behavioral-economics tasks compare supplied payoffs, reference points, budgets and observed choices. A gap, dominance flag or response fraction illustrates a declared convention without identifying a psychological bias, predicting real choices or selecting a suitable financial action.

Return incremental net payoff and a sunk-cost comparison.

When to use this tool

Use Sunk Cost Incremental Payoff Gap when checking the stated experimental payoff, budget, reference or choice convention.

How to use the tool and how it works

  1. Enter futureBenefit, futureCost, sunkCost, alternativeNet. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read incrementalNet, netIncludingSunk, advantageOverAlternative. Use the output convention below.

Return incremental net payoff and a sunk-cost comparison. Require futureCost/sunkCost >= 0; incrementalNet = futureBenefit-futureCost, netIncludingSunk subtracts sunk cost, advantageOverAlternative subtracts alternativeNet from incrementalNet.1

Input fieldMeaning and unitsAccepted input
futureBenefitFuture BenefitRequired. Finite number.
futureCostFuture CostRequired. Finite number; minimum 0.
sunkCostSunk CostRequired. Finite number; minimum 0.
alternativeNetAlternative NetRequired. Finite number.
Output fieldInterpretationReturned shape
incrementalNetIncremental NetRequired. Finite number.
netIncludingSunkNet Including SunkRequired. Finite number.
advantageOverAlternativeAdvantage Over AlternativeRequired. Finite number.
json
{
  "input": {
    "futureBenefit": 150,
    "futureCost": 100,
    "sunkCost": 200,
    "alternativeNet": 20
  },
  "output": {
    "incrementalNet": 50,
    "netIncludingSunk": -150,
    "advantageOverAlternative": 30
  }
}

Limitations and assumptions

  • Payoffs and alternative value are supplied; this comparison does not establish an optimal real decision or model all consequences.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use a well-defined study design and complete data to estimate behavior; assess real financial rights, consequences and uncertainty independently.

References

  1. Calculation and input contract: behavioral-economics/sunk-cost-incremental-payoff-gap — tool.io

Similar or alternative tools