Here is a professional Service Invoice Template with Advance Balance Adjustment for a continuous working relationship. This invoice template is very good if your customer has already paid some money as up front deposit against future services. In this invoice template you can specify as how much deposit was received and how much is adjusted in this current invoice.
Here is preview of this Invoice Template,
Here is download link for this Invoice Template,
If you are looking for another invoice layout, then I strongly recommend you to have a look at this free invoice template which is created using MS Word. Similarly, you can explore more free blue word templates on this site as well.