Subscription Billing

Use When

• Use when designing or reviewing subscription billing strategy, plan lifecycle, dunning, metered billing, tax handling, churn recovery, and SaaS revenue metrics. Covers trial-to-paid conversion, upgrades, downgrades, pauses, cancellations, usage pricing, and revenue recognition fundamentals.
• The task needs reusable judgment, domain constraints, or a proven workflow rather than ad hoc advice.

Do Not Use When

• The task is unrelated to subscription-billing or would be better handled by a more specific companion skill.
• The request only needs a trivial answer and none of this skill's constraints or references materially help.

Required Inputs

• Gather relevant project context, constraints, and the concrete problem to solve; load references only as needed.
• Confirm the desired deliverable: design, code, review, migration plan, audit, or documentation.