saas-billing-patterns

SaaS subscription state machines manage lifecycle states like trialing, active, and past_due. You can implement them using visual diagrams and corresponding SQL schemas to track subscription transitions and ensure accurate recurring revenue tracking.

Proration in subscription billing calculates proportional charges or credits when users change plans mid-cycle. It requires tracking the remaining billing period and applying rate differentials to generate accurate invoices for plan upgrades or downgrades.

Dunning sequences handle failed payments by managing grace periods and automated retry strategies. Implementing dunning logic allows your SaaS application to recover failed transactions and automatically transition subscriptions to past_due states when necessary.

Metered billing tracks usage metrics to calculate charges based on consumption rather than flat rates. Implementing hybrid pricing models requires tracking usage events and combining them with base subscription rates for accurate usage-based invoicing.

Feature gating controls application access based on active subscription plans. You implement this by mapping feature sets to subscription tiers and checking the user's current plan status before granting access to restricted functionalities.

Yes, you can generate a SQL schema for subscription lifecycle states. The schema defines database structures for managing state transitions between trialing, active, and past_due statuses to maintain reliable recurring billing records.