BR-DEC-13:The allowed maximum number of decimals for the Invoice total VAT amount...
Fix: Invoice Navigator automatically fixes this issue by correcting the `cbc:TaxInclusiveAmount` element in your Invoice (BR-DEC-13). Upload your invoice to fix this automatically.
The invoice total VAT amount has too many decimal places. The total tax amount must have a maximum of 2 decimal places.
Engine Classification
Round invoice total VAT amount to 2 decimal places per EN16931
Confidence: 95% · Applied automatically in pipeline
What is BR-DEC-13?
BR-DEC-13 is a fatal validation rule defined in the EN 16931 specification. It validates the TaxAmount element in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: //cac:TaxTotal/cbc:TaxAmount
Why This Error Matters
Invoice will be rejected by validation. VAT total precision is critical for tax reporting and compliance.
BR-DEC-13 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: BR-DEC-13
- ·Specification: EN 16931
How to Fix It
Find the incorrectly formatted value
Check cbc:TaxAmount at //cac:TaxTotal/cbc:TaxAmount. The current value does not match the required format.
Apply the correct format
Invoice Navigator automatically fixes this issue by correcting the `cbc:TaxInclusiveAmount` element in your Invoice (BR-DEC-13).
Update your export settings
If this occurs consistently, check your invoicing software's locale and format settings for XML export. Re-validate to confirm BR-DEC-13 is resolved.
Before / After
<cac:LegalMonetaryTotal> <cbc:TaxInclusiveAmount>999.99</cbc:TaxInclusiveAmount> <!-- Does not match expected calculation --> </cac:LegalMonetaryTotal>
<cac:LegalMonetaryTotal> <cbc:TaxInclusiveAmount>100.00</cbc:TaxInclusiveAmount> <!-- Matches expected calculation --> </cac:LegalMonetaryTotal>
Technical Reference
//cac:TaxTotal/cbc:TaxAmountCommon Causes
- ·VAT calculation produced extra decimal precision
- ·Sum of VAT breakdown amounts not rounded
- ·Tax rate calculation created excess decimals
- ·ERP exports VAT with full precision
- ·Multiple tax categories summed without rounding
Seeing this in production? The API handles BR-DEC-13 automatically. See the fix response →
Frequently Asked Questions
The invoice total VAT amount has too many decimal places. The total tax amount must have a maximum of 2 decimal places.
Invoice Navigator automatically fixes this issue by correcting the `cbc:TaxInclusiveAmount` element in your Invoice (BR-DEC-13). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, BR-DEC-13 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of BR-DEC-13 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
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Last updated: 14 April 2026
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