Stripe for SaaS Builders
Stripe has a 90-page API surface. Most SaaS builders need 20% of it — done correctly. This course covers exactly that 20%: one-time payments, subscription billing, the customer portal, webhook reliability, failed payment recovery, metered billing, and the 10 Stripe mistakes that cost builders money. No fluff — just the patterns that work in production.
What you'll learn
Course outline
Free — no account needed
Full course — $69 one-time
Subscription Billing
Recurring revenue with trial periods, plan upgrades, proration, and cancellation — done correctly
Webhooks Done Right
The five events every SaaS must handle, signature verification, idempotency, and a bulletproof handler
The Stripe Customer Portal
Let customers manage their own billing — cancellation, payment updates, and invoice downloads — without building UI
Failed Payments and Dunning
Recover 40–60% of failed subscription payments automatically — without writing a dunning system from scratch
Metered Billing
Charge customers exactly for what they use — API calls, AI credits, messages, or any countable unit
The Stripe Production Checklist
Every item to verify before going live — and the Supabase query that guards every protected route
Get the full course
8 lessons — from the Stripe object model to metered billing, dunning automation, and the production go-live checklist.
Written by the RadarTrek editorial team · Reviewed June 2026
About this course
Stripe is the payment infrastructure that powers most modern SaaS businesses. Learning Stripe for SaaS developers means understanding how to implement subscriptions, handle the full billing lifecycle (upgrades, downgrades, cancellations, prorations), process webhooks reliably, and manage the edge cases — failed payments, dunning, refunds, and disputes — that are inevitable in a billing system. This Stripe tutorial for developers covers everything you need to ship a production-ready billing implementation.
Payment bugs lose customers and revenue. A correct Stripe integration handles the happy path and every edge case: what happens when a card expires, when a customer upgrades mid-cycle, when a webhook is delivered twice, and when a payment fails on the fifth attempt. After this course you will be able to implement Stripe subscriptions, set up customer portals, handle webhooks idempotently, and debug billing issues with confidence.
Frequently asked questions
Should I use Stripe Checkout or build a custom payment form?
Stripe Checkout is the recommended starting point: it handles PCI compliance, renders a pre-built UI that Stripe optimises for conversion, and works across all payment methods and locales without custom code. A custom Elements form gives you more design control but requires more implementation work and careful PCI compliance handling. Start with Checkout, switch to Elements if Checkout's constraints genuinely block your UX requirements.
How do Stripe webhooks work?
Webhooks are HTTPS POST requests Stripe sends to your server when events occur — subscription created, payment succeeded, payment failed. You register a webhook endpoint in the Stripe dashboard, verify the signature on each incoming request to confirm it came from Stripe, and handle each event type. Webhook handling must be idempotent — if Stripe retries a delivery, processing it twice should not cause double-billing or data corruption.
How do I handle failed payments?
Failed payments are common — cards expire, spending limits are hit, banks decline charges. Stripe's dunning system automatically retries failed charges on a configurable schedule and sends customers reminder emails. For SaaS, configure Smart Retries and a customer-facing "update payment method" flow in Stripe Customer Portal. Track subscription status in your database and restrict access when a subscription enters `past_due` or `canceled` status.
What is proration and how does Stripe handle it?
Proration is the adjustment applied when a customer changes plans mid-billing cycle. If a customer upgrades from $10/month to $50/month halfway through the month, they get a $5 credit for unused time on the old plan and are charged $25 for the remaining time on the new plan. Stripe handles proration automatically by default and generates invoice line items that show the calculation clearly. You can also configure proration behaviour for specific use cases.
How do I sync Stripe data with my database?
The recommended pattern: create a customer record in your database when a user signs up, store the Stripe customer ID, then use webhook events to keep subscription status synchronised. When a checkout is completed, the `checkout.session.completed` webhook fires — use this to activate the subscription in your database. When a subscription is cancelled, `customer.subscription.deleted` fires. Never trust client-side payment confirmations alone — always verify via webhooks.