Stripe is excellent. Stripe integrations that only handle the happy path are not.
The Stripe quickstart covers one-time payments. Production Stripe integration covers subscriptions, failed payment recovery, proration, Stripe Connect payouts, webhook idempotency, and the billing edge cases that only surface with real customers. We've shipped Stripe Billing and Stripe Connect across dozens of production applications. Fixed scope, fixed price.
You need Stripe integrated correctly — not just the basic PaymentIntent flow but the full subscription lifecycle, webhook processing, and Connect payouts if your product requires it.
Stripe's webhook event system is the part of Stripe integration that separates correct from incorrect implementations. Every significant billing event generates a webhook event asynchronously: a subscription is created, a payment succeeds, a payment fails, a subscription is cancelled, an invoice is voided, a dispute is opened. Your application database needs to stay in sync with Stripe's authoritative billing state by processing these events.
The webhook processing failure modes are predictable: no signature verification (accepting events from any source, not just Stripe — a security vulnerability); no idempotency (the same webhook event can be delivered multiple times by Stripe; processing it twice creates duplicate records, duplicate emails, duplicate charges); incorrect event ordering handling (events can arrive out of order — a subscription.updated event might arrive before the subscription.created event if there's a delivery delay); and missing event handlers (the developer handles the happy path events but not customer.subscription.past_due, invoice.payment_failed, or customer.subscription.deleted — so cancelled subscriptions retain access indefinitely).
The subscription lifecycle that needs to be handled end-to-end: new subscription checkout (Stripe Checkout) → subscription active → invoice paid (keep access) → invoice payment failed (notify customer, restrict to grace period) → customer updates payment method → payment retried → if retry succeeds, access restored → if retry fails after dunning cycle, subscription cancelled → access revoked.
A production Stripe integration covering the full billing lifecycle — subscriptions, failed payments, plan changes, webhook processing with idempotency, and Connect for marketplace payouts where required.
Stripe Checkout for subscriptions
Checkout Session created server-side with the correct Price IDs and customer configuration. Success URL with the session ID for post-checkout verification. Webhook confirmation (don't trust the success URL query parameter alone — verify via webhook) to update the database.
Stripe Customer Portal for self-service
Portal Session created server-side on request. Customer can update payment method, change plan (with Stripe-handled proration), and cancel subscription. Portal events come back as webhooks — the same webhook handlers that process all subscription changes.
Webhook processing infrastructure
Endpoint with Stripe-Signature verification via Stripe's SDK. Idempotency tracking (processed event IDs stored in the database — duplicate deliveries are rejected). Event handlers for: checkout.session.completed, customer.subscription.created, customer.subscription.updated, customer.subscription.deleted, invoice.paid, invoice.payment_failed, customer.subscription.past_due.
Application state sync
Subscription status, current plan, and billing period synced to the application database from webhook events. Feature access gated on the database subscription status (not on a live Stripe API call per request — that would be too slow).
Stripe Connect for marketplace payouts
Express or Custom connected account onboarding flow. Transfer creation for platform-to-seller payouts after successful charge. Payout timing and minimum threshold configuration. Connected account dashboard components.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
A production Stripe integration covering the full billing lifecycle — subscriptions, failed payments, plan changes, webhook processing with idempotency, and Connect for marketplace payouts where required.
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
Stripe integration scope is defined by the billing model and the Connect requirements. Fixed scope, fixed price.
Related engagements.
Questions, answered.
Standard accounts: the seller logs into their existing Stripe account or creates one; Stripe's dashboard is the seller's primary interface; maximum Stripe control. Express accounts: Stripe provides a lightweight onboarding flow and a limited dashboard; more flexibility for the platform on user experience; most common for marketplace products. Custom accounts: the platform controls the entire onboarding and dashboard experience; maximum platform control; highest implementation complexity and highest Stripe compliance responsibility.
Digital goods and subscriptions sold within an iOS app must use Apple's StoreKit (IAP) — this is a hard App Store guideline. For products with both a web subscription and an iOS app, the correct architecture is: web uses Stripe Billing, iOS in-app subscription uses StoreKit, the backend validates StoreKit receipts and syncs subscription status to the same database subscription record. Both payment methods update the same subscription record; the access control checks the database status regardless of which payment method was used.
Yes — Stripe Billing integration added to an existing Next.js application is a common project type. The scope includes: Stripe Customer and Subscription creation for existing users, the checkout and portal flows, the webhook processing infrastructure, and the database migrations to add subscription status tracking to the existing schema.
Adding Stripe Billing to an existing application: $8k–$18k depending on the subscription model complexity and the state of the existing codebase. Stripe Connect addition: $12k–$25k. As part of a new application build, Stripe is included in the application scope. Fixed-price.
Standalone Stripe integration: 3–6 weeks. Part of a new application: included in the 10–14 week timeline.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.