# BR-DEC-17

> The allowed maximum number of decimals for the Rounding amount (BT-114) is 2.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-dec-17

## Official rule text

The allowed maximum number of decimals for the Rounding amount (BT-114) is 2.

## Why did my invoice fail BR-DEC-17?

The Rounding amount (BT-114), the small adjustment that rounds the payable amount up or down (e.g. to the nearest 0.05 or whole unit), must itself be expressed with at most two decimals. Holding it to 2 decimals keeps the amount-due calculation (tax-inclusive total minus paid plus rounding) consistent at currency scale.

## Common causes

- Computing the rounding delta at full floating-point precision
- Deriving it from a difference of two unrounded totals
- Emitting more than 2 decimals for cash-rounding adjustments

## How do I fix it?

```
Round the adjustment: <cbc:PayableRoundingAmount currencyID="EUR">0.02</cbc:PayableRoundingAmount> in cac:LegalMonetaryTotal.
```