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Reference

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BR-S-8 Standard-rated taxable amount must equal line nets plus charges minus allowances at the same rate

For each different VAT category rate (BT-119) where the VAT category code (BT-118) is "S", the VAT category taxable amount (BT-116) in the VAT breakdown must equal the sum of invoice line net amounts (BT-131) plus document-level charges (BT-99) minus document-level allowances (BT-92) whose VAT category code (BT-151, BT-102, BT-95) is "S" and whose rate (BT-152, BT-103, BT-96) equals BT-119.

Problem Description

ERROR

EN 16931 VAT category rule

Interactive pipeline

Click a stage to see what it checks, or type a rule ID to light up the stage that reports it.

Try:

BR-S-08 EN 16931 VAT category rule

Reported in stage 2: EN 16931 rules.

Level error: the report recommends rejecting the invoice.

Stage 2 · What it checks

  • The core business terms are present (BR-01 to BR-65).
  • Totals add up and related fields agree (BR-CO); codes and decimals are valid (BR-CL, BR-DEC).
  • Each VAT category is consistent: S, Z, E, AE, K, G, O, L, M (BR-S, BR-Z, BR-AE, BR-IC …).

Example codes

Typical fix

Recalculate totals and VAT from the line data, and correct the VAT category in the source data.

A validator checks an e-invoice in stages. First the file must be well-formed XML that matches the UBL or CII schema (XSD). Then the EN 16931 business rules run: BR core rules, BR-CO calculations, BR-CL code lists, BR-DEC decimals and VAT-category rules such as BR-S. Next come the national or network rules that BT-24 selects: BR-DE for XRechnung, PEPPOL-EN16931 for Peppol BIS Billing. The report lists every failed rule: one error means reject, warnings alone still mean accept. BR-S-08: EN 16931 VAT category rule, reported in the stage “EN 16931 rules”. Rule sets: KoSIT validator 1.6.3 with the XRechnung configuration of 31 Aug 2026 (EN 16931 artefacts 1.3.16), Peppol BIS Billing 3.0.21.

Context and Significance

When sellers issue mixed-rate invoices (for example 7 % and 19 % in Germany), the taxable amount per rate must match the lines, allowances and charges behind it. It is the basis of the VAT amount check in BR-CO-17. In practice the difference usually comes from a document level allowance or charge assigned to the wrong rate, from a global discount that is split across rates in the totals but exported with one rate only, or from lines whose rate matches no breakdown row.

Solution

Group all "S"-rated lines, allowances, and charges by rate, and recompute BT-116 per group as Σ BT-131 + Σ BT-99 − Σ BT-92.

Quick actions

Validate XMLConvert invoice

Valid Examples

  • Two lines at 19% (60.00 + 40.00) and one allowance at 19% (10.00) yield BT-116 = 90.00 for the 19% breakdown row
  • Single line at 7% net 50.00 yields BT-116 = 50.00 for the 7% breakdown row

Invalid Examples

  • BT-116 for the 19% row reports 100.00 but the lines sum to 90.00 after allowances
  • BT-116 for the 7% row missing while a 7% line exists

Affected Fields

BT-116 VAT category taxable amount
BT-119 VAT category rate
BT-131 Invoice line net amount
BT-92 Document level allowance amount
BT-99 Document level charge amount

Validation Tools

Official KoSIT Validator

Run the official KoSIT validator with the XRechnung configuration to check EN 16931 and XRechnung rules.

Convert PDF to XRechnung

Find validation errors during conversion and review each correction.