Hi, @gpratt47. Welcome to the QuickBooks Community.
Let me help you edit a customer bill in QuickBooks Online (QBO).
If you mean editing an invoice or bill sent to your customer, I recommend finding the transaction and then proceeding with editing. This works for both the old and new invoice layout.
- In your QBO account, go to the Magnifying glass icon.
- Enter the date, amount, or transaction number you’re looking for.
- Select the transaction.
- Edit the amount and other fields as necessary.
- Select Save or Save and close.
On the other hand, if you mean editing a bill billable to a customer, the steps I shared above remain the same.
Once done, you may want to run reports to see if the date, amount and other details of your transactions are correct. Let me add these articles as guides:
We're always here in the Community should you need further assistance editing a customer bill in QBO. We'll do our best to assist. Take care.