# Allowance / charge

Discounts (allowances) or surcharges (charges) applied to a line or document total.

## Definition

Discounts (allowances) or surcharges (charges) applied to a line or document total.

## Explanation

Must be reflected consistently in totals and tax calculation.

Often includes a reason code or text.

## Related resources

- [XRechnung fields](/resources/xrechnung)

## Related terms

- [Tax category](/resources/glossary/tax-category): Classification of tax treatment (e.g., standard, exempt, zero-rated).
- [Validation](/resources/glossary/validation): Process of checking an e-invoice against syntax rules and business rules.