Invoice fields

Line item

A line item is one separately described good, service, fee or adjustment on an invoice. It normally combines a description with quantity, unit, unit price, tax treatment and line total. Clear line items let the customer understand what was supplied and help the seller calculate subtotals, discounts, taxes and the final amount.

Also called
invoice item, billing line
Appears on
In the main itemized table
Related task
Describe and price each billed item clearly
Review note
Required detail and tax presentation vary by transaction
Last reviewed
2 September 2026

Why this matters when you invoice

Specific line items reduce questions because the customer can connect each charge to delivered work, goods, time or an agreed milestone.

Where it appears on an invoice

Use one row for each meaningful charge. Describe the outcome or supplied item, then show quantity, unit, price, tax where applicable and the resulting line total.

Worked example

Line item example

Instead of one line saying “Consulting — €2,000,” an invoice uses two lines: discovery workshop, 8 hours × €150; and written recommendations, 1 fixed deliverable × €800.

Common mistakes

  • Using vague descriptions such as “services rendered.”
  • Combining unrelated charges into one unexplained amount.
  • Entering tax or discounts inconsistently across lines.

Put it into practice

Use the matching InvoiceCraftly resource to apply this concept, then review the result in the context of your invoice and agreement.

This page explains common invoicing usage. Your agreement and applicable local rules determine what applies to a transaction.

Frequently asked questions

How detailed should a line item be?

Detailed enough for the customer to recognize the supplied work or goods and verify the quantity and price.

Can an invoice contain negative line items?

Some workflows use adjustments, but corrections to an already issued invoice may require a credit note instead. Check what applies.