Saudi VAT · By NAQIX · 15 October 2026

Credit notes and debit notes in Saudi Arabia: correcting an issued invoice

In Saudi Arabia an issued tax invoice is not a draft you can reopen. If the amount was wrong, or the goods came back, the correction is a new document that refers to the original: a credit note when the buyer was charged too much, a debit note when too little. Here is how to choose between them and keep them in order.

Editorial disclosure: this guide is published by NAQIX, an ERP software vendor. It is general information, not tax or legal advice; confirm how the rules apply to your business with your tax adviser.

Which document fixes which problem

Situation	Usual correction
Goods returned by the customer	Credit note for the returned items
Price billed too high, or a discount agreed after the sale	Credit note for the difference
Price billed too low, or a charge left off the invoice	Debit note for the difference
Supply cancelled after the invoice was issued	Credit note for the full invoice
Invoice raised to the wrong customer	Credit note for the full invoice, then a new invoice to the right customer

What you should not do is edit, cancel or delete the issued invoice. ZATCA's e-invoicing rules expect issued documents to stay as they were, and the note to carry the correction. Confirm the treatment of unusual cases, such as a change in the VAT rate or a supply that turns out to be exempt, with your tax adviser.

A debit note or a new invoice?

A debit note corrects the value of a supply you have already invoiced: the agreed price was higher than the one billed, or a charge that belonged to that supply was left off. If you deliver more goods or perform extra work, that is a new supply, and it normally needs its own tax invoice rather than a debit note on the old one. The test is simple: is the extra amount part of what the original invoice described? If not, raise a new invoice. Keeping the two apart also keeps your sales reports honest, because a debit note adds to what the customer owes without counting as another sale.

What a note should carry

A reference to the original invoice, by number and date, so anyone can trace the correction.
The reason for the note, in plain words: goods returned, price corrected, service not performed.
The amounts and VAT being adjusted, not the whole invoice again unless the whole invoice is reversed.
The same seller and buyer details as the original, including the buyer's VAT number on a note to a business.
Its own number in a controlled sequence, and a QR code where the original was a simplified invoice.

Notes under Phase 1 and Phase 2

Under Phase 1, notes are issued from the same compliant electronic solution as invoices. Under Phase 2 they are e-invoicing documents in their own right: a credit note and a debit note each have a type code, carry the reason and the reference to the original invoice, and are cleared or reported exactly like the invoice they correct. A note to a business buyer is cleared by ZATCA before it is shared; a note on a simplified invoice is reported within 24 hours.

One consequence is easy to miss. Under Phase 2 a note that ZATCA rejects is not a correction yet. Someone has to fix the data and issue it again, and until then the customer's balance and your VAT figures still reflect the original invoice.

The effect on your VAT return

In general, a credit or debit note adjusts the VAT return for the period in which it is issued, not the period of the original invoice. The buyer makes the matching adjustment to its input VAT. A credit note issued in July for a March invoice therefore reduces July's output VAT. Confirm the timing for your own case with your tax adviser, particularly for notes issued long after the original supply.

Because notes move VAT between periods, review them as a group before each return: how many were issued, for what reasons and for how much. A sudden rise in credit notes at period end deserves a question.

A simple routine for notes

Agree who may raise a credit note, and set a value above which a manager approves it.
Keep a short list of standard reasons so that reports group cleanly.
Raise the note from the original invoice, never as a free-standing document.
Return goods to stock only when they can be sold again; write off damaged or expired returns.
Before each VAT return, list the notes for the period and check them against the reasons.

How NAQIX handles credit and debit notes

A sales return creates a credit note against the original invoice, with a reason. Goods returned as faulty, expired or damaged are not put back into saleable stock.
A debit note is raised from the invoice it corrects, with a required reason and its own number series. It moves no stock, posts to receivables, sales and output VAT, and is collected, aged and shown on customer statements like any amount owed. While a live debit note refers to an invoice, that invoice cannot be edited, cancelled or deleted.
For a branch connected to ZATCA, an invoice issued to ZATCA can no longer be changed, cancelled or deleted; it is corrected with a credit note. Credit notes and debit notes go to ZATCA with their reason and are reported or cleared like the invoice.
The KSA VAT return register lists credit notes and debit notes alongside invoices for the period, for your accountant's review.
The production connection is not open yet. Until it is, NAQIX does not clear or report your live invoices with ZATCA. Branches can connect to ZATCA's simulation or sandbox environments, whose documents have no legal effect.

The Sales & billing and Tax & compliance pages list the features, and the NAQIX page for Saudi Arabia and the ZATCA invoicing overview describe the local setup.