UK VAT credit note: references and adjustment checklist

A UK VAT credit note supports a genuine reduction or correction to an earlier supply. A template is only the document layout: the transaction, VAT records and reporting must also support the adjustment.

By My Inventory Items · Practical document guide

Confirm the reason qualifies

HMRC’s validity guidance covers genuine mistakes, overcharges and agreed reductions that give value to the customer. It excludes credit notes issued for bad debt. See the linked HMRC conditions before treating a document as a VAT adjustment.

Link the VAT adjustment to the invoice

Use the document details in VAT Notice 700 section 18, including invoice references and the relevant amounts. Check the treatment of the original supply, especially when more than one VAT rate or a special scheme applies.

Complete the records and reporting

Retain the original invoice, credit note and evidence of the agreed change. Check the current issue timing and VAT reporting requirements in the official guidance. Generating a PDF does not submit an adjustment to HMRC.

Worked example

An agreed £100 net reduction at an illustrative 20% VAT creates £20 tax credit and £120 total credit. This example assumes the original supply used that rate; it does not establish the rate for another transaction.

Illustrative arithmetic, not a customer case study.

Frequently asked questions

Can I issue a VAT credit note just because a customer has not paid?

HMRC’s validity conditions exclude a credit note issued for bad debt. Check the separate bad debt rules rather than treating non-payment alone as an agreed price reduction.

Official sources and scope

The previews use UK-style GBP and VAT details. The UK guide draws on HMRC guidance; other guides explain document workflows and illustrative arithmetic. Source links checked on 17 October 2026.

Credit note guides

Credit note format and essential fields

Use a credit note checklist covering document numbers, original invoice references, reasons, credited items, tax and settlement details.

Credit notes for returned goods and damaged stock

Document returned quantities, calculate an invoice credit and reconcile returned goods with sellable, damaged and quarantined stock.

Credit note vs debit note vs refund

Compare seller-issued credit notes, debit notes and refunds, with examples of invoice increases, reductions and money returned.

Partial credit note example and remaining balance

Calculate a partial invoice credit after a payment, avoid double counting refunds and reconcile the customer’s remaining balance.

Give every adjustment a clear record.

Enter your own details in the free credit note generator. It offers GST fields and browser print or PDF output in its own layout. Review the tax fields for your transaction.

Create a credit note

Invoice and billing guides Payment receipts Debit note templates and guides