If you’ve been thinking of building a full-stack web app that’s scalable, fast, and modern, this tech stack trio is the dream team:

Next.js + Supabase + Stripe.

In this guide, I’ll walk you through how to build a full-stack application using these tools — even if you’re just getting started.

Whether you're building a SaaS product, an e-commerce platform, or a subscription-based app, this stack covers it all.

Let’s build something awesome:

Step 1: Set Up the Project

npx create-next-app@latest fullstack-app
cd fullstack-app
npm install

Then install Supabase and Stripe SDKs:

npm install @supabase/supabase-js stripe

Step 2: Connect to Supabase
Create a Supabase project at supabase.com.
Inside the dashboard:

  • Create a table (e.g. users or products)
  • Enable Auth (Email/Password or OAuth)

Now create a .env.local file in your Next.js app:

NEXT_PUBLIC_SUPABASE_URL=your_supabase_url
NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_anon_key

And initialize it:

// lib/supabase.js
import { createClient } from '@supabase/supabase-js'

const supabase = createClient(
  process.env.NEXT_PUBLIC_SUPABASE_URL,
  process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY
)

export default supabase

Step 3: Set Up Auth in Next.js
Create a simple sign-up/login page:

// pages/auth.js
import supabase from '../lib/supabase'

export default function Auth() {
  const handleLogin = async () => {
    const { user, error } = await supabase.auth.signInWithPassword({
      email: '[email protected]',
      password: 'password123'
    })
    console.log(user, error)
  }

  return Login
}

Step 4: Integrate Stripe Payments
Go to Stripe Dashboard and get your API keys.

Add them to .env.local:

STRIPE_SECRET_KEY=your_stripe_secret
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=your_publishable_key

Install stripe on the server:

npm install stripe

Create an API route in pages/api/create-checkout-session.js:

import Stripe from 'stripe'
const stripe = new Stripe(process.env.STRIPE_SECRET_KEY)

export default async function handler(req, res) {
  const session = await stripe.checkout.sessions.create({
    payment_method_types: ['card'],
    line_items: [{
      price_data: {
        currency: 'usd',
        product_data: { name: 'Pro Plan' },
        unit_amount: 1000,
      },
      quantity: 1,
    }],
    mode: 'payment',
    success_url: `${req.headers.origin}/success`,
    cancel_url: `${req.headers.origin}/cancel`,
  })

  res.status(200).json({ id: session.id })
}

Then trigger checkout from your client:

// pages/checkout.js
import { loadStripe } from '@stripe/stripe-js'

const stripePromise = loadStripe(process.env.NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY)

export default function Checkout() {
  const handleClick = async () => {
    const res = await fetch('/api/create-checkout-session', { method: 'POST' })
    const { id } = await res.json()
    const stripe = await stripePromise
    stripe.redirectToCheckout({ sessionId: id })
  }

  return Buy Now
}

Final Thoughts

With just a few tools — Next.js, Supabase, and Stripe — you’ve got a full-stack app that can handle:

  • Frontend UI & routing
  • Authentication & database storage
  • Payments & subscriptions

You can scale this into a full SaaS or marketplace with confidence. If you're short on time or want a pro to handle it all, you can always hire full stack developers to bring your vision to life.