To apply a credit memo to an invoice in QuickBooks Online (QBO), open the customer’s transaction list, click the credit memo, and use the “Apply to Invoice” button to select the invoice you want to credit. The credit reduces the invoice balance immediately, and the customer’s open balance updates accordingly.
What a Credit Memo Actually Does in QBO
A credit memo in QuickBooks Online is a non-cash transaction that represents money you owe a customer—for a return, a discount, an allowance, or a billing error. Unlike a refund, which sends money back to the customer’s bank account, a credit memo sits on the customer’s account as a positive balance that can offset future invoices. You can create one from the Customers menu or by converting a refund receipt, but the key is that it doesn’t affect your bank balance until you apply it or issue a refund against it.
When you apply a credit memo to an invoice, QBO reduces the invoice’s remaining balance. If the credit is larger than the invoice, the excess stays as a customer credit for future use. If it’s smaller, the invoice shows a partial payment from the credit, and the customer still owes the rest.
How to Apply a Credit Memo to an Invoice (Step by Step)
- Go to Sales and select Customers.
- Find the customer who has both the credit memo and the invoice you want to apply it to.
- Click the customer’s name to open their transaction list.
- Locate the credit memo (it will show as a negative amount) and click the Apply to Invoice link on its row.
- In the pop-up, check the box next to the invoice you want to credit. QBO will show the amount available and let you adjust how much of the credit to apply.
- Click Apply and then Save.
You can also apply a credit memo when you’re creating a new invoice: in the invoice form, click Apply Credits at the top, select the credit memo, and QBO will attach it to that invoice.
What If the Credit Memo Was Already Applied?
If you already applied a credit memo to an invoice and need to undo it, go to the credit memo, click More, and choose Delete or Void. Deleting removes the credit memo entirely and un-applies it from any invoices. Voiding keeps a record but zeroes it out. Both actions will restore the invoice balance to what it was before the credit.
Be careful: if the invoice has been paid in full and closed, you may need to un-apply the payment first. QBO won’t let you delete a credit memo that’s linked to a deposited payment. In that case, you’d have to remove the payment, delete the credit, then re-apply everything correctly.
Applying a Credit Memo to Multiple Invoices
QBO lets you apply one credit memo to several invoices at once. In the “Apply to Invoice” window, check multiple invoices, and QBO will distribute the credit across them in the order you select. The credit memo amount is fixed, so if the total of the selected invoices is more than the credit, the credit is split proportionally or in the order you check them—whichever you prefer. If the total is less, the remaining credit stays on the customer’s account.
For example, a customer returns a $150 item, and they have three open invoices: $50, $80, and $20. You can apply the $150 credit to all three, zeroing them out, and no balance remains. If the invoices totaled $200, you could choose to apply $150 to the largest invoice and leave the rest, or split it across all three.
Common Problems and How to Fix Them
- Credit memo doesn’t show in the “Apply to Invoice” list – The credit memo may be for a different customer. Check the customer name on the credit memo. Also, if the credit memo was already fully applied, it won’t appear.
- Invoice is already paid – You can’t apply a credit to a paid invoice. You’d need to un-apply the payment first, or create a new invoice and apply the credit there.
- Credit memo amount is wrong – You can edit the credit memo before applying it, but once applied, you may need to delete and recreate it.
- Customer balance shows negative – That’s normal if the credit exceeds all open invoices. It means the customer has a credit balance for future use.
Credit Memo vs. Refund: Which Should You Use?
Use a credit memo when you want to keep the money with the customer for future purchases—common in retail, subscription services, or when a customer plans to reorder. Use a refund when the customer wants their money back. In QBO, a refund is a separate transaction that actually moves money out of your bank account. You can convert a credit memo to a refund at any time by clicking Refund on the credit memo page, which creates a refund receipt and a bank transaction.
A common misconception is that applying a credit memo to an invoice is the same as writing off the invoice. It’s not. A write-off removes the invoice from your books as bad debt; a credit memo reduces the amount the customer owes because you owe them something. They have different tax and accounting implications, so choose based on the actual reason.
How to Track Credit Memos and Applied Credits
To see which invoices a credit memo has been applied to, open the credit memo and scroll to the bottom. QBO lists the applied invoices with dates and amounts. You can also run a Customer Balance Detail report, which shows every transaction—including credit memos and their applications—for each customer. This is the quickest way to verify that a credit was applied correctly and that your accounts receivable matches reality.
If you use QBO’s accountant view, you can see the same information in the Audit Log, which records every change to a transaction, including when a credit memo was applied or un-applied.
Template for Recording a Credit Memo Application
| Date | Customer | Credit Memo # | Invoice # | Amount Applied | Remaining Credit |
|---|---|---|---|---|---|
| 2025-03-14 | Acme Corp | CM-1024 | INV-2041 | 150.00 | 0.00 |
| 2025-03-14 | Acme Corp | CM-1024 | INV-2042 | 50.00 | 0.00 |
| 2025-03-14 | Acme Corp | CM-1024 | INV-2043 | 20.00 | 0.00 |
Sample only – fictional data.
Blank template:
| Date | Customer | Credit Memo # | Invoice # | Amount Applied | Remaining Credit |
|---|---|---|---|---|---|
| __________ | __________ | __________ | __________ | __________ | __________ |
| __________ | __________ | __________ | __________ | __________ | __________ |
| __________ | __________ | __________ | __________ | __________ | __________ |
Frequently Asked Questions
Can I apply a credit memo to an invoice from a different customer?
No. Credit memos are tied to a specific customer. You cannot apply a credit from Customer A to an invoice from Customer B. If you need to transfer the credit, you’d have to create a new credit memo for the correct customer and delete the old one, or issue a refund and re-charge the other customer.
What happens if I apply a credit memo to an invoice that’s already been paid?
QBO won’t let you do that directly. The invoice is closed once paid. You’d need to un-apply the payment (by deleting the payment or voiding it), then apply the credit, and then re-apply the payment if there’s a remaining balance. This is a multi-step process that can affect your bank reconciliation, so proceed carefully.
Does applying a credit memo affect my profit and loss report?
Yes, indirectly. The credit memo itself reduces your revenue on the P&L when you create it, because it’s a sales discount or return. Applying it to an invoice doesn’t change the P&L further—it just reduces the customer’s accounts receivable balance. The revenue impact happens at the credit memo creation, not at application.
Can I apply a credit memo to an invoice automatically?
QBO doesn’t have a one-click “auto-apply all” feature. You must manually select the invoice(s) in the Apply to Invoice window. However, if you create a new invoice for a customer who has a credit balance, QBO will prompt you to apply the credit automatically—you just click “Apply Credits” and confirm.
What if I applied the wrong credit memo to an invoice?
You can undo it. Open the credit memo, click More, and choose Delete or Void. Deleting removes the credit memo and un-applies it from the invoice. If the invoice has been paid in the meantime, you may need to un-apply the payment first. Always check the invoice balance after undoing to ensure it’s correct.