I will integrate Stripe payments, subscriptions and a customer billing portal

I will integrate Stripe payments, subscriptions, and a self-serve customer billing portal into your web app, wired correctly with webhooks, tax, and dunning so revenue lands cleanly.

What you get

• A working Stripe Checkout or Payment Element flow for one-time payments, embedded in your existing frontend (React, Vue, Svelte, plain JS, or server-rendered templates).
• Recurring subscriptions with the plans, intervals, and trials you define — monthly/annual toggles, multiple tiers, metered or seat-based pricing where it fits.
• The Stripe customer billing portal fully configured so your customers can upgrade, downgrade, switch plans, update cards, view invoices, and cancel without emailing you.
• A hardened webhook endpoint with signature verification that listens to the events that actually matter (checkout.session.completed, customer.subscription.created/updated/deleted, invoice.paid, invoice.payment_failed) and updates your database accordingly.
• Idempotent event handling so a retried or duplicated webhook never double-grants access or double-charges your logic.
• A clean mapping between Stripe entities (Customer, Subscription, Price, Product) and your own users/accounts table, so your app always knows who is subscribed to what.
• Server-side entitlement checks — your app gates features based on subscription status pulled from your own source of truth, not from a trusting frontend.
• Test-mode and live-mode wiring with environment-separated API keys, plus the Stripe CLI set up so you can replay and test webhooks locally.
• Proration, trial periods, and grace/dunning behavior configured to match how you want failed payments and plan changes handled.
• Optional Stripe Tax and coupon/promotion-code support if your pricing needs it.
• A short written handoff: which keys go where, which webhook events you depend on, how to add a new plan, and how to test a full subscribe-to-cancel cycle.

Plans

	Basic	Standard	Premium
One-time payment flow (Checkout / Payment Element)	Included	Included	Included
Recurring subscriptions	Single plan	Multiple tiers + annual/monthly	Multiple tiers, metered/seat-based
Customer billing portal	—	Configured	Fully configured + branded
Webhook endpoint + signature verification	Included	Included	Included
Idempotent event handling	Basic	Included	Included
Database / entitlement sync	Status flag	Full mapping	Full mapping + audit trail
Trials, proration, coupons	—	Trials + coupons	Trials, proration, coupons, promo codes
Stripe Tax setup	—	Optional	Included
Dunning / failed-payment handling	—	Standard	Custom retry + email hooks
Local testing setup (Stripe CLI)	Included	Included	Included
Written handoff doc	Short	Detailed	Detailed + runbook
Revisions	1	2	3

Exact plan boundaries are confirmed in writing before any work starts, so you know precisely what each tier covers for your stack.

How it works

1. Discovery. You tell me your stack, your pricing model (one-time, subscriptions, or both), and what "paid access" should unlock. I review your current codebase or repo if you share access.
2. Plan in Stripe. I create or align the Products and Prices in your Stripe account (or guide you to do it), matching the tiers and intervals you want.
3. Checkout flow. I build the payment entry point — Stripe Checkout for the fastest path, or the embedded Payment Element if you want a fully on-site experience.
4. Webhooks. I stand up a verified webhook endpoint and wire it to your database so subscription status, plan, and billing state stay accurate automatically.
5. Billing portal. I configure the Stripe customer portal and add the entry link in your app so customers manage their own billing.
6. Entitlements. I add server-side checks so features unlock and lock based on real subscription state.
7. Test the full cycle. Using test mode and the Stripe CLI, we run subscribe, upgrade, downgrade, failed payment, and cancel end to end.
8. Go live. I help you flip to live keys, verify the first real transaction, and hand over the documentation.

Why choose this

Payment integrations fail quietly. A flow can look finished in a demo and still lose revenue weeks later because a webhook wasn't verified, a retried event double-counted, or a canceled subscription never revoked access. I treat the webhook layer and your database sync as the real deliverable, not an afterthought. You get an integration that survives card declines, plan changes, retries, and edge cases — with test coverage you can re-run yourself and a handoff doc so you're never locked into me to add the next plan.

Who it's for / use cases

• SaaS founders launching a paid tier and needing subscriptions plus a self-serve portal.
• Existing apps that have a free product and want to add billing without rebuilding the frontend.
• Agencies and developers who need the Stripe layer done correctly while they focus on the product.
• Membership sites, course platforms, and communities charging recurring access.
• Marketplaces or tools adding one-time purchases, credits, or seat-based plans.
• Teams that bolted on a quick Checkout link earlier and now need real webhooks, entitlements, and dunning behind it.

FAQ

Q: Which frameworks and languages do you support? Frontend: React, Next.js, Vue, Nuxt, Svelte, Angular, or plain JavaScript. Backend: Node.js, Next.js API routes, Python (Django/Flask/FastAPI), Ruby on Rails, PHP (Laravel), or Go. If your stack isn't listed, ask — Stripe's APIs are consistent across languages.

Q: Do I need an existing Stripe account? Yes. You create and own the Stripe account so all revenue and keys stay under your control. I work inside it via test keys and a collaborator invite, never by holding your live secrets.

Q: Can you handle subscriptions with trials, annual plans, and upgrades? Yes. Trials, monthly/annual switching, mid-cycle upgrades and downgrades with proration, and plan changes through the billing portal are all standard parts of this work.

Q: How do you make sure access is actually revoked when someone cancels? Cancellation and payment-failure events arrive through verified webhooks, which update your database. Your app reads subscription status from your own data on every gated request, so access reflects reality rather than a stale frontend flag.

Q: What about failed payments? I configure Stripe's smart retries (dunning) and wire the invoice.payment_failed event so your app can react — flag the account, trigger an email, or restrict access after a grace period, depending on what you want.

Q: Do you handle taxes and invoices? Stripe Tax can be enabled to calculate and collect tax automatically, and Stripe generates invoices and receipts customers can access through the portal. Tax setup is included in Premium and available as an add-on otherwise.

Q: Will this work with my existing user accounts? Yes. A core part of the job is mapping each Stripe Customer and Subscription to your existing users or accounts so there's one clear source of truth for who has access.

Q: How do I test it before going live? Everything is built in test mode first. I set up the Stripe CLI so you can trigger and replay webhook events locally, and we run a full subscribe-to-cancel cycle together before switching to live keys.