Refund Invoice: How to Show a Refund Correctly

There is no special "refund invoice" in accounting. When you give money back to a customer, you leave the original invoice untouched, issue a credit note (called a credit memo in the US) that references it, and then record the refund payment against that credit note. That is how you show a refund correctly: the invoice records the sale, the credit note reverses part or all of it, and your bank record shows the money going back.

People search for a refund invoice because the customer, a marketplace or their own bookkeeping needs a document showing the money went back. This guide covers full refunds, partial refunds, how tax is reversed, a worked sample with the math, and the mistakes that leave your books out of balance. It is general information, not tax advice.

Why a refund needs a credit note, not an edited invoice

Once an invoice is sent, it is part of your records and usually part of a tax return. If you edit it to a lower figure or delete it:

• your invoice numbering has a gap or an altered entry, which auditors and tax inspectors notice;
• tax already reported on the original amount no longer matches your records;
• the customer's books still show the original invoice, so their records and yours disagree.

A credit note fixes all three. It has its own number, its own date, and a clear reference to the invoice it adjusts. In VAT systems it is also the document that allows both sides to adjust the tax. HMRC's VAT guide, for example, sets out what a UK credit note must show, including the original invoice number and date. If you are unsure whether to call it a credit note or credit memo, they are the same document; see credit memo vs credit note.

The refund paper trail, step by step

1. Original invoice. Already issued and recorded, for example INV-2026-0410.
2. Payment received. The customer paid, so the invoice shows a zero balance.
3. Refund agreed. Goods returned, service cancelled, or a price reduction agreed. Note the reason.
4. Credit note issued. CN-2026-0032, referencing INV-2026-0410, for the refunded amount plus tax.
5. Refund paid. Money goes back by the same method where possible, and the payment is recorded against the credit note.
6. Balance check. The customer's account is back to zero: invoice minus payment, minus credit note, plus refund equals zero.

If you skip step 4 and just send money back, your books show a sale that never reversed and an unexplained payment out. If you do step 4 but not step 5, the customer has a credit balance on account, which is fine only if that is what was agreed.

Full refund: worked example

A customer paid invoice INV-2026-0410 for a training course: £400.00 plus 20% VAT = £480.00. The course is cancelled and the customer wants all their money back.

CREDIT NOTE CN-2026-0032 | Date: 6 November 2026 | Relates to invoice INV-2026-0410 dated 12 October 2026
Reason: Course cancelled by supplier. Full refund.

Description	Qty	Unit price	Amount
One-day bookkeeping course, 20 November (cancelled)	1	£400.00	£400.00
VAT 20%			£80.00
Total credited			£480.00
Refunded by bank transfer on 7 November 2026			£480.00
Balance			£0.00

The supplier's output VAT falls by £80 in the period the credit note is issued, and a VAT-registered customer reduces the input VAT they reclaimed by the same £80.

Partial refund: worked example

An online shop invoiced 10 ceramic mugs at $18.00 each plus 7% sales tax: 10 x $18 = $180.00, tax $12.60, total $192.60. Two arrive broken and the customer wants a refund for those two only.

Description	Qty	Unit price	Amount
Ceramic mug, speckled glaze (arrived broken)	2	$18.00	$36.00
Sales tax 7%			$2.52
Total refund			$38.52

Check: the corrected sale is 8 mugs, 8 x $18 = $144.00, tax $10.08, total $154.08. $192.60 minus $38.52 = $154.08. When the remaining balance equals what the corrected invoice would have been, the refund is right.

Refunding a goodwill amount, not specific items

Sometimes you refund a flat amount as compensation, say $25 off a late job. Describe it plainly on the credit note ("Goodwill reduction for late delivery, agreed 5 November") and work out the tax portion. If the $25 is the tax-inclusive figure and the rate is 20%, the net is $25 / 1.20 = $20.83 and the tax is $4.17. Whether tax is adjusted on goodwill payments depends on whether it is a genuine reduction in the price of the supply, so check local rules for larger amounts.

Refund vs credit on account

Option	What happens	Best for
Refund	Money goes back to the customer	One-off buyers, cancelled orders, consumer sales
Credit on account	Credit note is applied to the next invoice	Regular B2B customers who will order again
Partial of each	Some refunded, rest held as credit	Negotiated settlements

Always confirm in writing which one the customer wants. When a customer has simply paid too much, rather than returned something, the process is slightly different; see customer overpayment: refund or credit.

Card refunds, marketplaces and chargebacks

• Card payments. Refund to the same card where possible. Processing fees on the original payment are often not returned by the card processor, so the refund costs you the fee; build that into your return policy.
• Marketplaces. Platforms usually generate their own refund records. You still need a credit note in your own books if you issued your own invoice.
• Chargebacks. A chargeback is a forced reversal by the card issuer, not a refund you chose. Do not also refund the customer directly, or you pay twice. Our guide on handling chargebacks explains the process.

What to include on a refund credit note

• Title "Credit Note" (or "Credit Memo")
• Credit note number from a separate series, and the date
• Your details and the customer's details, with tax IDs if required
• Original invoice number and date
• Reason for the refund
• Items or amount refunded, quantity, unit price
• Tax reversed, at the original rate
• Total refunded, method and date of refund

Some businesses prefer to show these figures as minus amounts on an invoice-style layout. It can work, but it has drawbacks; our guide to negative invoices explains when that format is acceptable.

Refund wording you can use

A short, plain reason on the credit note and in the covering email prevents follow-up questions. Some examples:

• "Full refund: order cancelled by customer within the cancellation period."
• "Partial refund for 2 items returned damaged in transit (see photos received 4 Nov)."
• "Refund of overcharge: hourly rate billed at $85 instead of agreed $75 for 12 hours (12 x $10 = $120)."
• "Refund of unused prepaid sessions: 3 of 10 sessions at $50."

Covering email: "Hi Sam, as agreed, we have issued credit note CN-2026-0032 against invoice INV-2026-0410 and refunded £480.00 to your account today. It may take one to three working days to appear. Please let us know if you need anything else."

Refunds across accounting periods

If the original sale was in one month or VAT quarter and the refund happens in the next, do not go back and change the earlier period. The credit note is dated when it is issued, and the reduction in sales and tax is recorded in the period the credit note falls in. The earlier return stays as filed. This keeps your filed returns consistent with your records and is the approach most VAT and GST systems expect, though some have time limits for issuing credit notes, so check local guidance.

Common mistakes

• Deleting or editing the original invoice.
• Refunding the net price but forgetting the tax, or reversing tax at today's rate instead of the rate on the original invoice.
• Issuing the credit note but never recording the refund payment, leaving a phantom credit on the customer's account.
• Refunding a customer who also filed a chargeback.
• No reason on the credit note, so nobody remembers why six months later.
• Reusing the invoice number for the credit note. Credit notes need their own sequence.

To produce the credit note, open our invoice generator, set the title to "Credit Note," add the original invoice reference and the refunded lines, then download it as a PDF. It is free and there is no account to create.