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Price Wedge Ad Valorem Equivalent Tool

Express supplied price differences relative to a positive border-price base without attributing the wedge to policy.

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Description

Divide domesticPrice minus positive borderPrice by borderPrice for observedWedge and specificWedge by borderPrice for its equivalent.

A trade index or share compares values on a declared price, currency, period, and coverage basis. Changing a denominator or quote orientation can change the interpretation substantially.

Divide domesticPrice minus positive borderPrice by borderPrice for observedWedge and specificWedge by borderPrice for its equivalent.

When to use this tool

Use Price Wedge Ad Valorem Equivalent when you need an explicit trade-ratio or index component.

How to use the tool and how it works

  1. Enter domesticPrice, borderPrice, specificWedge. 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 observedWedge, suppliedAdValoremEquivalent, residual. Use the output convention below.

Divide domesticPrice minus positive borderPrice by borderPrice for observedWedge and specificWedge by borderPrice for its equivalent. Return domestic minus border minus specific wedge as residual.1

Input fieldMeaning and unitsAccepted input
domesticPriceDomestic PriceRequired. Finite number.
borderPriceBorder PriceRequired. Finite number; strictly above 0.
specificWedgeSpecific WedgeRequired. Finite number.
Output fieldInterpretationReturned shape
observedWedgeObserved WedgeRequired. Finite number.
suppliedAdValoremEquivalentSupplied Ad Valorem EquivalentRequired. Finite number.
residualSigned residual using the convention in the calculation paragraph.Required. Finite number.
json
{
  "input": {
    "domesticPrice": 120,
    "borderPrice": 100,
    "specificWedge": 15
  },
  "output": {
    "observedWedge": 0.2,
    "suppliedAdValoremEquivalent": 0.15,
    "residual": 5
  }
}

Limitations and assumptions

  • Price and wedge amounts must share units; the calculation does not attribute the wedge to tariffs or other causes.
  • 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

Check source statistical definitions and compatible bases before comparing countries, partners, or time periods.

References

  1. Calculation and input contract: international-economics/price-wedge-ad-valorem-equivalent — tool.io

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