Margin Scheme Secondhand VAT Base Calculator

Eligible secondhand VAT-INCLUSIVE margin VAT=m×rate/(1+rate), signed loss retained and taxable positive margin floored; caller verifies margin-scheme eligibility. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.

Description

A secondhand margin-scheme calculation can extract VAT from an eligible tax-inclusive margin.

A secondhand margin-scheme calculation can extract VAT from an eligible tax-inclusive margin.^[1]

Keeping the signed sale-minus-purchase margin shows a loss even though the taxable positive margin is floored.

When to use Margin Scheme Secondhand VAT Base Calculator

Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Establish jurisdiction, tax year, applicable authority, and eligible amounts or evidence before entering values. Minor-unit amounts use one currency; 12345 means 123.45 when that currency has 100 minor units per major unit. One basis point is 0.01 percentage points.

How to use Margin Scheme Secondhand VAT Base Calculator and understand its results

Establish jurisdiction, tax year, applicable authority, and eligible amounts or evidence before entering values. Minor-unit amounts use one currency; 12345 means 123.45 when that currency has 100 minor units per major unit. One basis point is 0.01 percentage points.
Enter eligibleSecondhandSaleMinor, eligiblePurchaseMinor, callerVatBasisPoints, following the field table and rules below, then run the tool.
Read signedEligibleMarginMinor, positiveMarginVatMinor. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.

Input field	Meaning	Value type	Requirement
eligibleSecondhandSaleMinor	Eligible secondhand sale minor	number	Required
eligiblePurchaseMinor	Eligible purchase minor	number	Required
callerVatBasisPoints	Caller VAT basis points	number	Required

Use nonnegative safe-integer sale and purchase amounts and integer VAT basis points from zero to ten thousand. Compute the signed margin; use only its positive part in margin×rate/(10000+rate), rounded to minor units.

margin=sale−purchase; VAT=round(max(0,margin)×rateBp/(10000+rateBp))

Symbols follow the input and output meanings and the calculation rules above.

Output field	Meaning	Value type
signedEligibleMarginMinor	Signed eligible margin minor	number
positiveMarginVatMinor	Positive margin VAT minor	number

json

{
  "input": {
    "eligibleSecondhandSaleMinor": 120,
    "eligiblePurchaseMinor": 80,
    "callerVatBasisPoints": 2000
  },
  "output": {
    "signedEligibleMarginMinor": 40,
    "positiveMarginVatMinor": 7
  }
}

Limitations and assumptions

Eligibility, rates, dates, definitions, and exceptions are independently supplied facts. The arithmetic is not a complete return calculation or a determination of tax liability.

Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Monetary products and sums use checked integer arithmetic; fractional minor amounts are rounded to nearest, with half ties away from zero. Rates and amounts must satisfy the tool-specific bounds above.

Alternative or Complementary methods

For a related review, use VAT GST Rate Country Lookup: VAT and GST rates depend on jurisdiction, product or service, and tax point. This lookup retrieves your verified rate record with its source, context, and as-of date. For a complementary step, use Flat Rate VAT Scheme Percent Lookup: A flat-rate VAT scheme reference requires the country, scheme, industry, and effective date. This lookup retrieves your verified percentage notice under an exact key.

References

Margin Scheme Secondhand VAT Base Calculator — tool.io

Similar or alternative tools

VAT GST Rate Country Lookup
VAT and GST rates depend on jurisdiction, product or service, and tax point. This lookup retrieves your verified rate record with its source, context, and as-of date.
Flat Rate VAT Scheme Percent Lookup
A flat-rate VAT scheme reference requires the country, scheme, industry, and effective date. This lookup retrieves your verified percentage notice under an exact key.