Writing off invoice balance

Hi Marty62 

Generally speaking, if the invoice is only being charged at a value you would just look at updating that invoice to show the correct amount i.e. reduce the amount on the invoice or add in a negative line on the invoice to reduce the total amount.

In some cases, you may prefer to record a credit note to the customer and then apply that credit note amount back to the invoice to close it. Our Help Article: Creating customer returns goes through the process of creating that customer return/credit note. You would then use Help Article: Processing customer returns for assistance on allocating that customer return back to the invoice.

In short, you go to Sales>>Create invoice -- enter a negative invoice for that customer, which would be the customer return. You would then navigate to Sales>>Customer returns and select Apply on that return to apply it to the relevant invoice(s).