Billing Automation

Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.

Use this skill when

• •Implementing SaaS subscription billing
• •Automating invoice generation and delivery
• •Managing failed payment recovery (dunning)
• •Calculating prorated charges for plan changes
• •Handling sales tax, VAT, and GST
• •Processing usage-based billing
• •Managing billing cycles and renewals

Do not use this skill when

• •You only need a one-off invoice or manual billing
• •The task is unrelated to billing or subscriptions
• •You cannot change pricing, plans, or billing flows

Instructions

• •Define plans, pricing, billing intervals, and proration rules.
• •Map subscription lifecycle states and renewal/cancellation behavior.
• •Implement invoicing, payments, retries, and dunning workflows.
• •Model taxes and compliance requirements per region.
• •Validate with sandbox payments and reconcile ledger outputs.
• •If detailed templates are required, open resources/implementation-playbook.md.

Safety

• •Do not charge real customers in testing environments.
• •Verify tax handling and compliance obligations before production rollout.

Resources

• •resources/implementation-playbook.md for detailed patterns, checklists, and examples.