Attestwire › Rule reference › BR-Z-06

BR-Z-06 A zero-rated allowance must have a VAT rate of zero

noun · EN 16931 · fatal · BT-96

For a sample invoice, the library reports: The document level allowance at allowances[0] uses VAT category Z (Zero rated), so its VAT rate (BT-96) must be 0 (zero), but it is 19. Zero rated means the rate is zero — that is the whole content of the category.

Business term

BT-96

Severity

fatal

The fix

Set allowances[0].vatRate to 0, or omit it — this library normalises the rate for category Z either way. If you did mean to charge 19% VAT on this allowance, the category should be S instead, and that will change which breakdown group it nets into.

A passing value

"vatCategory": "Z", "vatRate": 0

What the library returns

The full error returned by @attestwire/en16931. It includes the rule ID, affected field and suggested correction. Developers can use this object in their application:

{
  "rule": "BR-Z-06",
  "field": "BT-96",
  "severity": "fatal",
  "message": "The document level allowance at allowances[0] uses VAT category Z (Zero rated), so its VAT rate (BT-96) must be 0 (zero), but it is 19. Zero rated means the rate is zero — that is the whole content of the category. Any other value here would put VAT on an adjustment to a supply the document has just declared untaxed, and would split the breakdown into two Z groups, which BR-Z-01 forbids.",
  "fix": "Set allowances[0].vatRate to 0, or omit it — this library normalises the rate for category Z either way. If you did mean to charge 19% VAT on this allowance, the category should be S instead, and that will change which breakdown group it nets into.",
  "example": "\"vatCategory\": \"Z\", \"vatRate\": 0",
  "xpath": "/ubl:Invoice/cac:AllowanceCharge[1]/cac:TaxCategory/cbc:Percent",
  "docsUrl": "https://attestwire.com/rules/BR-Z-06"
}

xpath is always a UBL path. On a CII invoice, look for the matching CII field instead.