Comparison · Updated July 2026
Best Next.js SaaS Starter Kits
Five paid kits below share the same Next.js + Supabase + Stripe backbone — the differentiator is what each layers on top: Cursor config, MCP wiring, n8n automation, or (in one case) tenant-resolution middleware instead of a full starter. All five run $19. Two free open-source alternatives are listed for comparison.
Published 2026-07-03 · Author: WOWHOW
| Starter kit | What's included | Price | Best for |
|---|---|---|---|
| Next.js 15 + Tailwind SaaS Starter Kit with Auth, Billing, Dashboard UI | Next.js 15, Tailwind, auth, Stripe billing, dashboard UI. No AI or automation layer bundled. | $19 | A clean baseline you can customize without ripping out AI wiring you do not need. |
| Cursor + Next.js 15 SaaS Starter Kit with Supabase Auth, Stripe Billing & Tailwind UI | Same auth/billing/Tailwind base, plus Cursor-specific project rules and config pre-wired. | $19 | Teams building primarily inside Cursor rather than Claude Code or VS Code. |
| MCP-Ready SaaS Starter Kit for Next.js + Supabase + Stripe | Same base stack, plus MCP server wiring so an AI agent can call into your app's data and actions. | $19 | SaaS products that need to expose their own MCP interface, not just consume one. |
| FoundrySaaS: AI-Ready Next.js + Supabase + n8n Starter Kit | Same base stack, plus n8n workflow automation wired in for things like onboarding emails and billing webhooks. | $19 | Founders who want workflow automation running from day one instead of building it after launch. |
| Production-Grade Next.js Tenant Resolution Middleware Pack | Not a full starter — middleware only, for subdomain and custom-domain tenant resolution. | $19 | Adding multi-tenancy to an app you already have, not starting from zero. |
| create-t3-app (t3-oss, GitHub) ↗Not WOWHOW | CLI scaffold for Next.js + tRPC + Prisma + NextAuth + Tailwind, fully type-safe end to end. 29,000+ GitHub stars. No billing included. | Free | Type-safety purists who will wire up Stripe or Razorpay themselves. |
| nextjs-subscription-payments (Vercel, GitHub) ↗Not WOWHOW | Vercel's own reference template: Next.js + Supabase + Stripe subscriptions. 7,700+ GitHub stars, officially maintained. | Free | Teams who want a minimal, first-party reference over a feature-rich paid kit. |
Why do the paid kits all cost the same?
Because the base stack (Next.js 15, Supabase, Stripe, Tailwind) is the expensive part to get right — auth flows, webhook handling, and billing edge cases — and that cost is fixed regardless of what gets added on top. The $19 price reflects the base, not the extra layer. If MCP wiring or n8n automation is not something you need, the plain Tailwind kit gives you the same foundation without paying for integrations you will not use.
Frequently Asked Questions
These all use Next.js + Supabase + Stripe — what's actually different between them?
The auth and billing wiring is close to identical across the paid kits. The differentiator is what sits on top: Cursor-specific config in one, MCP server wiring in another, n8n workflow automation in a third. The tenant resolution pack is the outlier — it is middleware only, not a full starter.
Is the tenant resolution pack a complete SaaS starter?
No. It solves one specific problem — routing requests to the right tenant by subdomain or custom domain — and assumes you already have (or are building) the rest of the app around it.
Do any of these support Razorpay instead of Stripe?
Not out of the box. All five paid kits are built around Stripe billing. If you need Razorpay for INR payments, budget time to swap the billing provider — none of them bundle it as an alternative.
Should I just use a free open-source starter instead?
create-t3-app and Vercel's subscription-payments template are both solid and actively maintained. Neither ships MCP wiring, n8n automation, or Cursor-specific config — if you need one of those, you are assembling it yourself either way, so a paid kit that already has it can save the assembly time.
Which one should I buy first?
If you have no specific AI or automation requirement, start with the plain Tailwind kit ($19) — it is the cleanest base to customize. If you are building an AI-native product, the MCP-Ready or FoundrySaaS n8n kit saves the most integration time.