BR-CO-15: Gross total must equal net total plus VAT
Gross total must equal net total plus VAT; add the tax-exclusive total and invoice VAT total, rounded to two decimal places.
What the rule says
[BR-CO-15]-Invoice total amount with VAT (BT-112) = Invoice total amount without VAT (BT-109) + Invoice total VAT amount (BT-110).
Official en16931 source, version 1.3.16. EUPL 1.2; sources, licences and notices. Syntax and business checks are separate; this is not certification.
Gross total must equal net total plus VAT
Gross total must equal net total plus VAT. The controlled example changes the specific field or group named by this rule. Set only /*/cac:LegalMonetaryTotal/cbc:TaxInclusiveAmount to '121.01'.
Business terms: BT-109, BT-110, BT-112.
Add the tax-exclusive total and invoice VAT total, rounded to two decimal places.
Reproduced failure and correction
Tested on 2 November 2026 with the production SaxonC-HE 13.1 / saxonche 13.1.1 engine, en16931 mode, UBL. The XSD passes; the report then contains BR-CO-15. Restoring this fragment makes the complete original invoice pass the selected checks.
[BR-CO-15]-Invoice total amount with VAT (BT-112) = Invoice total amount without VAT (BT-109) + Invoice total VAT amount (BT-110).Additional triggered rules: 1. BR-CO-16. Counts include distinct error and warning codes; the target code is excluded.
Precise mutated XPath: /*/cac:LegalMonetaryTotal/cbc:TaxInclusiveAmount.
Calculation using this invoice
Gross total shown: 121.01 EUR. Expected: net 100.00 + VAT 21.00 = 121.00 EUR. Difference: 0.01 EUR. Round the result to two decimal places.
Before: triggers this rule
<cac:LegalMonetaryTotal xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
<cbc:LineExtensionAmount currencyID="EUR">100.00</cbc:LineExtensionAmount>
<cbc:TaxExclusiveAmount currencyID="EUR">100.00</cbc:TaxExclusiveAmount>
<cbc:TaxInclusiveAmount currencyID="EUR">121.01</cbc:TaxInclusiveAmount>
<cbc:PayableAmount currencyID="EUR">121.00</cbc:PayableAmount>
</cac:LegalMonetaryTotal>
After: passes
<cac:LegalMonetaryTotal xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
<cbc:LineExtensionAmount currencyID="EUR">100.00</cbc:LineExtensionAmount>
<cbc:TaxExclusiveAmount currencyID="EUR">100.00</cbc:TaxExclusiveAmount>
<cbc:TaxInclusiveAmount currencyID="EUR">121.00</cbc:TaxInclusiveAmount>
<cbc:PayableAmount currencyID="EUR">121.00</cbc:PayableAmount>
</cac:LegalMonetaryTotal>
The context shown is part of a complete invoice; it is not a standalone invoice. Mutation: value at /*/cac:LegalMonetaryTotal/cbc:TaxInclusiveAmount. The passing baseline is validated with the selected pinned package. UBL examples use a controlled single-line adaptation of the official XRechnung example; the CII example uses the official EN 16931 baseline.
Download complete failing invoice · Download complete passing invoice
Check the rest of the invoice
Repair the source data and exporter, then validate the complete invoice again with the same package. Review every remaining error and warning; a passing rule is not a guarantee of recipient acceptance.
EN 16931 syntax and business checks · XRechnung profile requirements · Pro/Team batch checks.