Counterfoil rule note
Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.
Invoice total VAT amount (BT-110) = Σ VAT category tax amount (BT-117).
Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/BR-CO-14/
Peppol BIS Billing 3.0, May 2026 release, EN 16931 model bound to UBL
Severity note: fatal, from the Flag column of the Peppol BIS Billing 3.0 UBL rules index retrieved 2026-10-17.
The invoice total VAT amount (BT-110) must equal the sum of the VAT category tax amounts (BT-117). The published test also allows a tax total that has no VAT breakdown.
Set BT-110 to the sum of the VAT category tax amounts (BT-117) in that tax total.
Illustration of the condition in the official statement. Not an example published by the source.
Fails the stated condition. VAT category tax amounts are 19 and 7, and BT-110 is 19.
Passes the stated condition. Those same amounts, and BT-110 is 26.
Copied from the source. Not reimplemented on this page.
/ubl:Invoice/cac:TaxTotal | /cn:CreditNote/cac:TaxTotal
(xs:decimal(child::cbc:TaxAmount)= round((sum(cac:TaxSubtotal/xs:decimal(cbc:TaxAmount)) * 10 * 10)) div 100) or not(cac:TaxSubtotal)
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