IN-TAX-TOTAL-AMOUNT:Tax total amount required
Fix: Add TaxAmount to TaxTotal. Provide the required value in the free validator.
Invoice must have a total VAT amount in the TaxTotal element.
Engine Classification
Business data required · Explicit input workflow · No assumptions made
Required input: Total Tax Amount
What is IN-TAX-TOTAL-AMOUNT?
IN-TAX-TOTAL-AMOUNT is a fatal validation rule defined in the peppol-bis-3 specification. It validates the TaxAmount element under Invoice > TaxTotal in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: XPath: /Invoice/cac:TaxTotal/cbc:TaxAmount
Why This Error Matters
Total VAT must be stated.
IN-TAX-TOTAL-AMOUNT is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Rejected by PEPPOL Access Points
- ·Error returned: IN-TAX-TOTAL-AMOUNT
- ·Specification: peppol-bis-3
How to Fix It
Calculate total
Sum of all TaxSubtotal amounts
Add TaxAmount
In TaxTotal element
XML Example
Generic example based on the rule's target XPath. Your actual XML structure may differ.
<!-- Missing or empty element triggers cbc:TaxAmount error --> <cbc:TaxAmount></cbc:TaxAmount>
<!-- Provide the required value --> <cbc:TaxAmount>VALID_VALUE</cbc:TaxAmount>
Technical Reference
XPath: /Invoice/cac:TaxTotal/cbc:TaxAmountCommon Causes
- ·Missing TaxTotal
- ·Missing TaxAmount
Seeing this in production? The API handles IN-TAX-TOTAL-AMOUNT automatically. See the fix response →
Frequently Asked Questions
Invoice must have total VAT amount.
Add TaxAmount to TaxTotal. Invoice Navigator detects this error and prompts for the required business data before applying a safe fix.
Yes, PEPPOL-EN16931-R043 is a critical error that must be fixed.
Related Errors
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Last updated: 3 March 2026
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