BR-DEC-20
EN 16931-1 layer: en16931
Checked against Peppol BIS Billing 3.0 2026.5
What does BR-DEC-20 mean? The allowed maximum number of decimals for the VAT category tax amount (BT-117) is 2.
Why did my invoice fail BR-DEC-20?
The VAT category tax amount (BT-117), the VAT calculated for one VAT breakdown (BG-23) at its rate, may carry at most two decimal places. This guarantees the per-category tax figure matches the invoice VAT total and the currency's minor-unit precision.
Official rule text
The allowed maximum number of decimals for the VAT category tax amount (BT-117) is 2.
Common causes
- Computing taxable amount x rate as a float without rounding (e.g. 210.0000000001)
- Emitting full precision from a decimal library instead of quantizing to 2 places
- Currency conversion of the VAT amount yielding 3+ decimals
How do I fix it?
Quantize to 2 decimals: <cac:TaxSubtotal><cbc:TaxAmount currencyID="EUR">210.00</cbc:TaxAmount>...</cac:TaxSubtotal>
Related rules
BR-DEC-01 · BR-DEC-02 · BR-DEC-05 · BR-DEC-06 · BR-DEC-09 · BR-DEC-10 · BR-DEC-11 · BR-DEC-12
Check your invoice against this rule
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