invoice

name	invoice
description	Generate monthly invoices with subsidies applied and list overdue accounts.

Invoice

1. Confirm the billing month and fetch the enrolment and fee schedule for each family.
2. Apply any approved subsidies, concessions, or fee reductions for each child.
3. Calculate the net amount due; attach an itemised breakdown.
4. Generate a separate invoice document per family — never combine data across families.
5. Identify accounts where the previous month's balance is still outstanding and add a gentle overdue notice.
6. Output a summary listing issued invoices and any overdue accounts for staff review.