PRD: Invoices

Status	Draft
Owner	Stuart Meeks
Last updated	2026-10-10
Phase	4

Summary

Bill customers from sales orders and keep the accounting system in sync.

Known requirements (to be expanded)

• Invoice types: full, deposit, progress.
• Invoices sync to the accounting system; payments sync back. See accounting integration.
• GST and payment terms are configuration.

Problem

To do.

Goals

To do.

Non-goals

To do.

User stories

Story IDs use the prefix INV-.

To do.

Business rules

To do.

States and lifecycle

To do.

Open questions

See open questions.