# Invoice line item

A single billed item/service line including quantity, price, and tax details.

## Definition

A single billed item/service line including quantity, price, and tax details.

## Explanation

Often requires unit codes, tax category, and descriptive text.

Line totals must match quantity × price and discounts/charges.

## Related resources

- [Unit codes](/resources/code-lists/unit-codes)

## Related terms

- [Unit code](/resources/glossary/unit-code): Standard code describing the unit of measure (e.g., piece, hour, kilogram).
- [Tax category](/resources/glossary/tax-category): Classification of tax treatment (e.g., standard, exempt, zero-rated).
- [Allowance / charge](/resources/glossary/allowance-charge): Discounts (allowances) or surcharges (charges) applied to a line or document total.