Billing Automation

1---
2name: billing-automation
3description: Build automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management. Use when implementing subscription billing, automating invoicing, or managing recurring payment systems.
4---
5 
6# Billing Automation
7 
8Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.
9 
10## Use this skill when
11 
12- Implementing SaaS subscription billing
13- Automating invoice generation and delivery
14- Managing failed payment recovery (dunning)
15- Calculating prorated charges for plan changes
16- Handling sales tax, VAT, and GST
17- Processing usage-based billing
18- Managing billing cycles and renewals
19 
20## Do not use this skill when
21 
22- You only need a one-off invoice or manual billing
23- The task is unrelated to billing or subscriptions
24- You cannot change pricing, plans, or billing flows
25 
26## Instructions
27 
28- Define plans, pricing, billing intervals, and proration rules.
29- Map subscription lifecycle states and renewal/cancellation behavior.
30- Implement invoicing, payments, retries, and dunning workflows.
31- Model taxes and compliance requirements per region.
32- Validate with sandbox payments and reconcile ledger outputs.
33- If detailed templates are required, open `resources/implementation-playbook.md`.
34 
35## Safety
36 
37- Do not charge real customers in testing environments.
38- Verify tax handling and compliance obligations before production rollout.
39 
40## Resources
41 
42- `resources/implementation-playbook.md` for detailed patterns, checklists, and examples.
43