How do I create a CIS Credit note to cancel an existing CIS Invoice?

Hey there, penelopeallard.

Welcome to the Community. I can guide you on how to create a credit note to cancel an existing invoice in QuickBooks Online.

First, you'll need to take note of the CIS and Less CIS amount from the existing invoice (see screenshot below). We'll need this information upon creating the credit note in the system.

Once done, we can proceed with creating a credit note to be applied to the invoice. Here's how:

1. Click the Plus sign.
2. Below Customers, select Credit Note.
3. Add the customer name.
4. On the first line, add the CIS item and the amount.
5. On the second line, add the CIS Suffered item and enter the Less CIS amount with a minus sign.
6. Click Save and close.

If you don't have the CIS Suffered item for the second line, you can create them by following these steps: 

1. On the second line of the credit memo, click the empty field below Product/Service column.
2. Click the drop-down arrow and click Add new.
3. Select Service.
4. Enter CIS Suffered as the name.
5. Below Tax, choose No Vat.
6. Click Save and close.

The last thing we'll need to do is apply the credit memo into the existing invoice. Please follow these steps:

1. Open the existing invoice.
2. Click Receive payment.
3. Put a check mark on the invoice and credit memo.
4. Click Save and close.

The steps above will help clear the CIS invoice on your QuickBooks. Let me know if you need further assistance, and I'll be sure to get back to you.