Counterfoil rule note
Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.
The allowed maximum number of decimals for the VAT category tax amount (BT-117) is 2.
Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/BR-DEC-20/
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 2026-10-18.
The VAT category tax amount (BT-117) may have at most 2 decimals. The statement says "allowed maximum number of decimals" and "is 2", and it ends with a period. It does not say shall. The context is cac:TaxTotal/cac:TaxSubtotal. This is a decimal limit, not the BR-46 presence check and not the BR-CO-17 calculation. The published test reads cbc:TaxAmount and writes <=2 with no space before <=. It does not call exists.
Send the VAT category tax amount (BT-117) with at most 2 digits after the decimal point.
Illustration of the condition in the official statement. Not an example published by the source.
Fails the stated condition. A VAT category tax amount has 3 digits after the decimal point.
Passes the stated condition. That amount has 2 digits after the decimal point.
Copied from the source. Not reimplemented on this page.
cac:TaxTotal/cac:TaxSubtotal
string-length(substring-after(cbc:TaxAmount,'.'))<=2
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