SaaS Billing & Subscription System. @saas-billing-system

Billing is where SaaS products leak quietly: customers on legacy plans nobody can explain, entitlements that drift from what was paid for, failed payments that nobody chases, and a finance team reconciling Stripe against the database by hand. The SaaS Billing & Subscription System builds the machinery properly — one source of truth from plan definition to payment to what the product actually enforces.

The finish state is billing that runs itself: customers subscribe, upgrade, and downgrade with correct proration; entitlements update the moment billing state changes; failed payments follow a dunning path; and finance gets invoices and revenue data they can trust.

Plans & Subscriptions

Your pricing modelled as configuration, not code — plans, tiers, trials, and add-ons — with subscription state managed through a provider such as Stripe.

Entitlement Enforcement

What each plan grants, enforced in the product: features, seats, and limits that update automatically when a subscription changes, with no drift between paid and delivered.

Billing Lifecycle

Upgrades and downgrades with proration, cancellations, renewals, failed-payment retries and dunning, and the webhook handling that keeps product state and billing state agreeing.

Invoicing & Payments

Invoices, tax handling through the provider's tooling, payment methods, and receipts — plus the events your accounting system needs for clean reconciliation.

1. Scope — Fix the pricing model, the entitlement map per plan, the lifecycle policies, and the migration path for existing customers.
2. Build — Land the provider integration and entitlement layer, then the lifecycle flows, tested against the full subscription state machine.
3. Handover — Existing customers migrated, finance reporting connected, and the plan configuration handed to your team.

The SaaS Billing & Subscription System is a menu item on the Scrums.com delivery catalog, available at every plan tier. Add it to your plan backlog and your delivery team schedules it like any other item — scoped, tracked, and reported through the SEOP. See Delivery Plan Tiers.

We already bill through Stripe. What does this add?

Stripe holds subscriptions; it does not enforce entitlements in your product, keep your database honest, or run your upgrade policies. The sprint builds that layer — and usually cleans up the accumulated plan sprawl while migrating onto it.

Can it handle usage-based pricing?

Seat- and tier-based pricing with limits is in scope here. Metered, usage-based commercial rules are their own machinery — that is the SaaS Usage Metering & Quotas item, which builds on this system.

How do you migrate existing subscribers safely?

Mapped plan by plan in scoping, executed with no interruption to access and no surprise charges — grandfathering is modelled explicitly where you choose to keep legacy terms.