# BR-DEC-19

> The allowed maximum number of decimals for the VAT category taxable amount (BT-116) is 2.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-dec-19

## Official rule text

The allowed maximum number of decimals for the VAT category taxable amount (BT-116) is 2.

## Why did my invoice fail BR-DEC-19?

The VAT category taxable amount (BT-116), the sum of line net amounts belonging to one VAT breakdown (BG-23), may have at most two decimal places. Limiting precision here ensures the taxable base per VAT rate reconciles cleanly with the tax amount and document totals.

## Common causes

- Summing line net amounts as floats and emitting the unrounded result
- Aggregating values that were themselves not rounded to 2 decimals
- Currency-conversion producing more than 2 decimals in the taxable base

## How do I fix it?

```
Round before output: <cac:TaxSubtotal><cbc:TaxableAmount currencyID="EUR">1000.00</cbc:TaxableAmount>...</cac:TaxSubtotal>
```