Invoices & Billing

What it is: Invoices from billable time or fixed fees, with tax, due dates and aging.

Overview

Works out the smallest useful Invoices & Billing setup for the business in front of it, then builds it only when asked. The default output is a short recommendation, not a spreadsheet. Artifacts - CSV, SQL DDL, JSON Schema, Notion mapping - are produced on request, from one field list so they cannot drift apart.

Layer: Layer 8: Operate. Fits: Starter stage. Table code: n/a.

When to Use This Skill

• invoice tracker
• billing spreadsheet
• invoice register
• accounts receivable aging