How to Implement Subscription Billing (Without Rebuilding Stripe Badly)

Your product must ask 'what can this account do right now' — a clean entitlements service driven by subscription state, handling trials, grace periods, seat counts, and plan changes without scattering billing logic through features.

Sales tax/VAT automation, upgrade/downgrade proration policy, refunds and credits, and revenue-recognition exports for finance — decided deliberately, before the auditor or the angry invoice arrives.

Skipping the discipline this article describes until an incident, audit, or stalled project forces it — every practice above is cheaper adopted early than retrofitted under pressure.