What it means
In a VAT breakdown (BG-23) with the category IGIC (BT-118), the tax amount (BT-117) must equal the taxable amount (BT-116) multiplied by the rate (BT-119) and divided by 100. The check compares the amounts without their sign and allows a rounding difference of less than 1 in the invoice currency.
Why it matters
The tax amount is the figure the recipient books and the tax authority collects. If it does not follow from the taxable amount and the rate, the invoice contradicts itself, and it is rejected.
How to fix it
Recalculate the tax amount for each IGIC entry: for example, 1,000.00 at a rate of 7 gives 70.00. If the result differs from what your software shows, check that the rate in the breakdown is the rate you meant, and that the taxable amount was not changed after the tax was calculated.
The rule as published
The VAT category tax amount (BT-117) in a VAT breakdown (BG-23) where VAT category code (BT-118) is "IGIC" shall equal the VAT category taxable amount (BT-116) multiplied by the VAT category rate (BT-119). Business terms: BG-23, BT-116, BT-117, BT-118, BT-119
Where this rule applies
| Rule set | Version |
|---|---|
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
| Factur-X 1.09 BASIC WL | 1.0.9-2 |
| Factur-X 1.09 BASIC | 1.0.9-2 |
| Factur-X 1.09 EN 16931 | 1.0.9-2 |
| Factur-X 1.09 EXTENDED | 1.0.9-2 |
| ZUGFeRD 2.5 BASIC WL | 2.5.2 |
| ZUGFeRD 2.5 BASIC | 2.5.2 |
| ZUGFeRD 2.5 EN 16931 | 2.5.2 |
| ZUGFeRD 2.5 EXTENDED | 2.5.2 |
| SI-UBL 2.0 / NLCIUS (invoice) | 2.0.3.13 |
| SI-UBL 2.0 / NLCIUS (credit note) | 2.0.3.13 |
| NLCIUS (CII) | 1.0.3.13 |
Check your file
Drop your e-invoice to see whether BR-AF-09 still fails, and which other rules do.
Related rules
- BR-AG-09 IPSI VAT amount must equal the taxable amount times the rate
- BR-FXEXT-S-09B Standard-rate VAT amount must equal taxable amount times the rate
- BR-IG-09 IGIC amount must be the taxable amount times the rate
- BR-IP-09 IPSI VAT amount must equal taxable amount times rate
- BR-S-09 Standard-rate VAT must be taxable amount times rate
- BR-AF-08 IGIC taxable amount must match the lines, charges and discounts