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BR-36:Tax total amount required
The invoice must have a TaxTotal with TaxAmount.
Fix this in your source system
MANUALInvoice totals require manual verification. Automatic changes could cause calculation cascades affecting tax amounts, line totals, and compliance. Please verify all amounts in your source system.
See the step-by-step instructions below to fix this error manually.
Why This Error Matters
Invoice rejected. Cannot calculate invoice totals without charge amounts.
How to Fix It
1
Add TaxTotal
Required even if zero VAT
2
Calculate amount
Sum of all TaxSubtotal TaxAmounts
3
Include currency
currencyID must match DocumentCurrencyCode
Code Example
<cac:TaxTotal>
<cbc:TaxAmount currencyID="EUR">210.00</cbc:TaxAmount>
<!-- TaxSubtotals -->
</cac:TaxTotal>Technical Details
XPath: /Invoice/cac:TaxTotal/cbc:TaxAmountCommon Causes
- Document charge added without amount value
- AllowanceCharge/Amount field not mapped for charges
- Percentage surcharge without base amount
- Charge template missing amount field mapping
- Zero-value charge exported with null instead of 0
Commonly Seen In
All invoicing software
Frequently Asked Questions
The invoice must have a TaxTotal with TaxAmount.
Add TaxAmount to TaxTotal element. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, BR-36 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.
Many instances of BR-36 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including tax total amount required.
BR-36 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.
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Last updated: 18 January 2026
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