Pricing and project billing

Discount

A discount is a reduction from the normal or agreed price of a line item or invoice total. It may be a percentage or fixed amount and can reflect a promotion, negotiated price, volume purchase or early-payment arrangement. The invoice should show the discount clearly enough that the customer can understand the calculation and resulting taxable amount.

Also called
price reduction, invoice discount
Appears on
On a line item, subtotal section or payment terms
Related task
Show an agreed reduction transparently
Review note
Tax calculation and disclosure rules vary locally
Last reviewed
2 September 2026

Why this matters when you invoice

A visible discount explains why the amount due differs from the standard price and helps both parties check the subtotal, tax and final total.

Where it appears on an invoice

Identify whether the discount applies to one line or the whole invoice. Show the original basis, percentage or fixed reduction, and the resulting amount before calculating later totals.

Worked example

Discount example

A service is priced at €1,000 with a 10% agreed discount. The invoice shows the €1,000 basis, a €100 discount and a €900 amount before applicable tax.

Common mistakes

  • Applying the discount twice.
  • Hiding the original amount or calculation basis.
  • Calculating tax in an order that conflicts with applicable rules.

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

Should a discount appear before or after tax?

The correct calculation depends on the type of discount and applicable tax rules. Use the treatment that applies to the transaction.

Can a discount apply to one line only?

Yes. Label the affected line clearly so it is not mistaken for an invoice-wide reduction.