Why is my Balance not $0 in QBO for some customer?

When you view the balance in QBO, it simply is taking the total of all of the invoices and subtracting the amount paid.

There is one known issue currently that happens when the following actions occur in Zr Ware™.

1. Invoice with taxable services and payment is closed in Zr Ware™.
2. Zr Ware™ creates the Invoice and Payment in QBO.
3. A refund is issued in Zr Ware™.
4. Zr Ware™ creates the Refund Receipt in QBO.
5. Booking is reopened in Zr Ware™ (this is what currently causes the situation)
6. Zr Ware™ tries to recreate the invoice in QBO but we get the Duplicate Document Number described above.
7. User deletes the invoice from QBO.
8. Zr Ware™ recreates the invoice in QBO.
9. Note: Zr Ware™ reports the invoice tax amount as the sum of ALL line items (including refunds) multiplied by the tax rate of the service address. This tax amount is different than only summing up the non-refund line items and multiplying it by the tax rate of the service address.

When you look at the customer now in QBO, you will see the Balance is not 0 but will be the difference of the tax amount of the refunded taxable services.

If you find yourself in this state this is how you can correct this

1. From the QBO Customer screen viewing all invoices, refunds, payments create a new invoice
2. We recommend setting the invoice number/document number to the same number as the original invoice and just add a period "." after it so you don't have a collision with the same number
3. Add a non-taxable line item to this invoice and describe exactly why you are putting this service in there. Set the price of this line item to offset the balance.
4. Save the invoice only

When you view the customer the Balance should now be $0.