GST/HST credit notes in Canada help you document a refund, a reduced project fee, or tax charged by mistake. For a registered freelancer or sole proprietor, sending money back is only part of the job: you also need a clear record of the tax adjustment and the correct GST/HST reporting period.
This guide covers ordinary customer refunds and price reductions, not a refund of your overall GST/HST account balance from the CRA.
When do you use GST/HST credit notes in Canada?
Suppose you invoiced a client for a completed project, then agreed to reduce the fee because part of the work did not meet the agreed scope. If you also credit the related GST/HST, issue a credit note. The same principle applies when a customer returns goods or you correct excess tax charged on an invoice.
Under CRA memorandum 12.2, a supplier may adjust, refund, or credit GST/HST in these situations. The tax adjustment is optional under section 232, although other contractual or consumer obligations may apply. This article assumes you choose to return or credit the tax along with the price reduction.
Do not simply delete the original invoice. Keep it and connect the credit note to it so your records explain what changed.
What belongs on a credit note?
For a straightforward refund, include:
- A clear label such as Credit note.
- Your business name and GST/HST registration number.
- The customer's name or business name.
- The date you issue the credit note.
- The GST/HST amount being adjusted, refunded, or credited.
Those are the core details in the credit note information regulations. Special presentation rules apply to combined tax-included amounts and certain other credits. Showing the tax separately is a practical approach for a simple freelance invoice.
Also include the original invoice number and date, the reason for the adjustment, the pre-tax reduction, and the total credit. These details make reconciliation easier. Our freelancer HST invoicing guide explains the original invoice requirements.
Issue the credit note within a reasonable time after the tax adjustment. You do not need to issue your own credit note if the customer first gives you a qualifying debit note.
Example: reducing an Ontario project fee
Assume you are registered, your service was correctly subject to Ontario's 13% HST, and your original invoice was $1,000 plus $130 HST. You later agree to a $200 pre-tax price reduction and refund the associated tax.
Your credit note shows:
- Fee reduction: $200.
- HST credited at 13%: $26.
- Total credit or refund: $226.
The revised charge is $800 plus $104 HST, or $904 altogether. If the client already paid the original $1,130, return $226 or apply the agreed credit. If they have not paid, the credit reduces their outstanding balance.
Use the tax treatment applicable to the original transaction. Do not select a different rate just because the client moved or today's rate differs.
Which GST/HST return gets the adjustment?
Generally, the supplier deducts the credited tax in the reporting period when the credit note is issued, or when the customer's debit note is received. The deduction is limited to tax already included in your net tax for that period or an earlier period.
The CRA identifies line 107 for this supplier adjustment. A later customer refund does not automatically mean reopening the original return. Keep the credit note with the records supporting the adjustment, and check your software's treatment to avoid deducting the same tax twice.
If your business receives a supplier credit note and already claimed an input tax credit for the refunded tax, you generally add that amount back to net tax for the period you receive the note. The CRA identifies line 104 for that adjustment. See our input tax credits guide for the expense side.
Watch the deadlines and keep the paper trail
The time limits differ. Excess tax generally has a two-year adjustment or refund window, measured from when it was charged or collected, as applicable. For a later price reduction, the supplier generally has four years after the end of the reporting period in which the price was reduced to adjust, refund, or credit the tax.
A client who simply does not pay presents a different issue. Do not invent a price reduction to clear the invoice; read the GST/HST bad debt guide instead.
Keep the invoice, credit note, client correspondence, and refund confirmation together. Use HST Hero to track taxable revenue against the registration threshold, while keeping your supporting adjustment records separately. For unusual refunds or disputed tax, confirm the treatment with the CRA or your accountant.