SvelteKit Guide

Best Payment Processing for SvelteKit (2026)

Compare the best payment solutions for SvelteKit. We review Stripe, LemonSqueezy, Paddle, and more with form actions, webhook handling, and subscription support.

SvelteKit's form actions and server-side capabilities make payment integration clean and secure. You never expose secret keys to the client, and webhook handling fits naturally into SvelteKit's endpoint structure. The choice between processors depends on whether you want to handle tax compliance yourself or use a Merchant of Record.

Pourquoi C'est Important

Payment processing is where your business makes money. Security, reliability, and user experience all matter. SvelteKit's architecture keeps payment logic server-side where it belongs. Choose based on your tax compliance needs, target market, and development resources.

Considérations Clés

Merchant of Record (MoR)

MoR providers (Paddle, LemonSqueezy) handle taxes, compliance, and are the legal seller. Non-MoR (Stripe) means you handle taxes. MoR costs more but eliminates compliance headaches.

Form Actions Integration

SvelteKit form actions are perfect for checkout flows. Create checkout sessions, handle webhooks, manage subscriptions - all in server-side code with progressive enhancement.

Webhook Endpoints

SvelteKit +server.ts files handle webhooks cleanly. Verify signatures, process events, update your database. All providers support this pattern.

Subscription Management

For SaaS, you need upgrades, downgrades, cancellations, and dunning. Stripe Billing and MoR providers handle this. Build UI with customer portal links.

Checkout Experience

Hosted checkout (redirect to Stripe/Paddle) vs embedded elements. Hosted is simpler and handles edge cases. Embedded looks more native but requires more work.

Nos Recommandations

Stripe

Meilleur Global Excellent Support SDK Officiel

Stripe is the gold standard for payments. Excellent SDK, comprehensive docs, lowest fees (2.9% + 30¢). Works perfectly with SvelteKit form actions. You handle tax compliance (Stripe Tax helps). Best for developers who want full control.

npm install stripe @stripe/stripe-js

Site Web → Documentation →

LemonSqueezy

Meilleur pour Indie Hackers Bon Support SDK Officiel

LemonSqueezy handles taxes and compliance as Merchant of Record. Higher fees (5% + 50¢) but zero tax headaches. Great for digital products and SaaS. Simple API works well with SvelteKit.

npm install @lemonsqueezy/lemonsqueezy.js

Site Web → Documentation →

Paddle

Meilleur MoR pour B2B Bon Support SDK Officiel

Paddle is a mature Merchant of Record for B2B SaaS. Professional invoicing, enterprise-ready. Higher fees but handles everything - taxes, fraud, chargebacks. Good for selling to companies.

npm install @paddle/paddle-js

Site Web → Documentation →

stripe-billing

Meilleur pour Abonnements Excellent Support SDK Officiel

Stripe Billing adds subscription management to Stripe. Customer portal, usage-based billing, prorations, dunning. More work than MoR but maximum flexibility. Use with Stripe Tax for compliance.

npm install stripe

Documentation →

Comparaison Rapide

Service	TypeScript	Edge	Offre Gratuite	Temps de Configuration
Stripe	full	—	No monthly fee	30 min
LemonSqueezy	full	✓	No monthly fee	15 min
Paddle	full	✓	No monthly fee	20 min

Démarrage Rapide

Create Stripe Checkout with SvelteKit Form Action src/routes/checkout/+page.server.ts

import { redirect } from '@sveltejs/kit';
import Stripe from 'stripe';
import type { Actions } from './$types';

const stripe = new Stripe(process.env.STRIPE_SECRET_KEY!);

export const actions: Actions = {
  checkout: async ({ request }) => {
    const data = await request.formData();
    const priceId = data.get('priceId') as string;

    const session = await stripe.checkout.sessions.create({
      mode: 'subscription',
      payment_method_types: ['card'],
      line_items: [{ price: priceId, quantity: 1 }],
      success_url: `${process.env.APP_URL}/success`,
      cancel_url: `${process.env.APP_URL}/pricing`,
    });

    throw redirect(303, session.url!);
  }
};

Modèles d'Intégration Courants

Stripe + Supabase + SvelteKit

Stripe for payments, Supabase for auth and database, sync subscription status via webhooks. Popular SaaS stack for SvelteKit.

stripe supabase

LemonSqueezy + Prisma

LemonSqueezy handles payments and taxes, Prisma manages your database. Webhook syncs subscription data. Zero-tax-hassle stack.

lemonsqueezy prisma

Paddle + WorkOS

Enterprise SaaS stack. Paddle for B2B payments with invoicing, WorkOS for enterprise SSO. Sell to companies with proper compliance.

paddle workos

Questions Fréquemment Posées

Should I use Stripe or LemonSqueezy for my SvelteKit SaaS? ▼

Use Stripe for lower fees and full control. Use LemonSqueezy if you don't want to deal with sales tax, VAT, and invoicing - they handle it all as Merchant of Record. For indie hackers selling globally, MoR often saves time and headaches.

How do I handle Stripe webhooks in SvelteKit? ▼

Create a +server.ts file (e.g., src/routes/webhooks/stripe/+server.ts) with a POST handler. Verify the webhook signature with stripe.webhooks.constructEvent(), then process events. Return 200 to acknowledge receipt.

Can I use SvelteKit form actions for payments? ▼

Yes! Form actions are perfect for creating checkout sessions. The action runs server-side, creates the session with your secret key, then redirects to the checkout URL. Progressive enhancement means it works without JavaScript.

What's the cheapest payment processor for SvelteKit? ▼

Stripe has the lowest fees at 2.9% + 30¢ for US cards. MoR providers charge 5%+ but include tax handling. If you sell globally and factor in tax compliance costs, MoR might be cheaper overall.

Guides Connexes

Next.js payments SvelteKit auth SvelteKit database

Comparer en Détail

Dernière mise à jour: January 11, 2026