We are on a payment plan, but my invoice still shows the full amount owing?

Great question. To save time on invoice issuing + tracking, instead of generating 3 separate invoices, we generate one "master" invoice that has a moving due date.

Agreed payment arrangements are noted on the invoice.

We have found that this has been beneficial for not only us, but also our clients - with one single invoice to keep a record of instead of 3 separate ones.