BR-13: invoice total amount without VAT missing
The invoice does not state the total amount without VAT (BT-109). This field folds in the line total (BT-106) plus document-level allowances and charges (BG-20/BG-21); it then feeds the calculation of BT-112, checked by BR-CO-15.
Last updated: 2026-07-22
Affected field
BT-109 InvoiceTotalAmountWithoutVAT / cbc:TaxExclusiveAmount (UBL, inside cac:LegalMonetaryTotal) / ram:TaxBasisTotalAmount (CII, inside ram:SpecifiedTradeSettlementHeaderMonetarySummation)
Cause
A step in the total calculation (applying document-level allowances/charges after the line total) silently fails in the invoicing software and leaves the field empty, or the export does not map this field for legacy formats.
Fix
Populate cbc:TaxExclusiveAmount (UBL) or ram:TaxBasisTotalAmount (CII) with BT-106 plus document-level charges minus document-level allowances. Then verify BT-112 = BT-109 + BT-110 (BR-CO-15).
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Frequently asked questions
Does BR-13 check the calculation, or just presence?▼
Only presence. The correctness of the calculation (BT-109 = BT-106 + charges − allowances) is covered by a separate consistency rule, not BR-13.
Does this field change under reverse charge?▼
No, BT-109 remains the amount without VAT regardless of the VAT regime applied (standard, exempt, reverse charge). The regime affects BT-110 and the VAT breakdown, not this total.