The best tech stack for a SaaS MVP in 2026 is Next.js + TypeScript + Supabase + Stripe + Vercel. It’s not the most exciting answer, but it’s the stack that lets two developers ship a working, scalable product in 4–6 weeks consistently.
Here’s exactly what we use at Whipp Studio and why each choice was made.
Frontend + Backend: Next.js 15 with TypeScript
Next.js is the clear choice for SaaS in 2026. The App Router (stable since Next.js 13) gives you Server Components, Server Actions, and built-in API routes — meaning your frontend and backend live in one codebase, deployed in one command.
Why not Remix? Remix is excellent but has a smaller community and fewer integrations. When you need a third-party library, Next.js almost always has better support.
Why not SvelteKit? We love SvelteKit for content sites. For SaaS with complex state, React’s ecosystem (libraries, component packs, debugging tools) is a meaningful advantage.
TypeScript is non-negotiable. Every new SaaS we build at Whipp Studio is TypeScript-first. The upfront cost is maybe 10% more development time. The long-term cost of debugging untyped JavaScript in a growing codebase is 10x that.
Database + Auth + Storage: Supabase
Supabase is the most complete backend-as-a-service for startups. One platform gives you:
- PostgreSQL — the world’s best open-source relational database, with full SQL, JSONB, and extensions like pgvector
- Auth — email/password, magic links, OAuth providers, multi-factor authentication
- Storage — S3-compatible file storage with access policies
- Realtime — WebSocket subscriptions on database changes
- Edge Functions — serverless Deno functions if you need custom backend logic
We used to use Firebase for many projects. We switched to Supabase because PostgreSQL’s relational model is the right fit for 90% of SaaS products. NoSQL made sense for specific document-heavy use cases. For SaaS with users, subscriptions, organizations, and complex relationships, SQL is the right tool.
Supabase pricing: Free tier is generous (500MB database, 1GB storage, 50,000 monthly active users). Pro plan is $25/month. You won’t outgrow it early.
Payments: Stripe
Stripe is the only choice for a serious SaaS product. Stripe Billing handles subscriptions, trial periods, proration, dunning (automatic retry on failed payments), and customer portals without custom code.
What we configure in every SaaS build:
- Stripe Checkout for the payment UI (hosted by Stripe, PCI-compliant, converts well)
- Stripe Billing for subscription management
- Stripe Customer Portal so users can manage their own subscriptions
- Stripe Webhooks to sync subscription state to your database
- Stripe Tax for automatic VAT/sales tax calculation
The webhook setup alone takes most teams days to get right. We have a battle-tested pattern we drop into every project.
Email: Resend + React Email
Resend is the modern transactional email API built for developers. React Email lets you write email templates as React components — same skills, same tooling, no separate template language.
What we send in every SaaS:
- Welcome email (immediately after signup)
- Email verification
- Password reset
- Trial ending (3 days before)
- Payment failed (with retry link)
- Payment succeeded (receipt)
- Subscription cancelled (with win-back offer)
These emails run your business while you sleep. Set them up in week 3 of the build — don’t launch without them.
Deployment: Vercel
Vercel is the best platform for Next.js. It handles global CDN, edge functions, image optimization, preview deployments on every PR, and automatic scaling. The free tier is enough for an MVP. Pro is $20/month.
We also use Vercel for environment variables, analytics, and Web Vitals monitoring. It’s a complete deployment platform, not just a host.
What We Add Based on Requirements
Headless CMS: Sanity (for content-heavy products), PayloadCMS (for code-first CMS needs)
AI features: Anthropic Claude API or OpenAI GPT-4o, routed through server-side API routes
Analytics: PostHog (free, self-hostable, replaces Mixpanel + FullStory + LaunchDarkly)
Error monitoring: Sentry (free tier covers most early-stage needs)
Background jobs: Inngest or Trigger.dev (for reliable background processing and cron jobs)
Search: Algolia (managed) or pgvector on Supabase (if you’re already there)
What We Avoid
ORMs for simple projects: We use Supabase’s generated TypeScript types directly rather than adding Prisma overhead for simple data access patterns.
Kubernetes at MVP stage: Not until you have a real scaling problem. Vercel’s serverless handles more than you think.
Microservices: A monolith deployed on Vercel is the right architecture until you have a very specific reason to split services. Premature microservices kill startup velocity.
Redux: React Server Components and Zustand for minimal client state handle 95% of SaaS state management needs. Redux is complexity without commensurate benefit for most products.
Frequently Asked Questions
Should I use Supabase or Firebase for my MVP? Supabase for any SaaS with relational data (users, organizations, subscriptions, relationships). Firebase for mobile-first apps where offline sync is critical.
Is Next.js overkill for a simple MVP?
No. Next.js is extremely fast to set up with create-next-app and Supabase’s quickstart. The “overhead” is theoretical — the practical experience is fast.
Can this stack handle 10,000 users? Easily. Vercel and Supabase are both designed to scale. Supabase Pro handles significant traffic. Revisit infrastructure when you hit 100,000 users, not before.
What about mobile apps? Your Next.js app is responsive and works on mobile browsers. Build the web app first. Add a React Native app post-PMF when you have revenue to fund it.
How much does this stack cost per month? Under $100/month for a pre-scale MVP: Vercel Pro ($20), Supabase Pro ($25), Resend ($20), Sentry free tier ($0), PostHog free tier ($0), Stripe (% of revenue). Scale these as you grow.
Want this stack assembled and shipped in 4–6 weeks? At Whipp Studio we build on this exact stack for every SaaS client. Clean code, full TypeScript, documented handoff. Book a free strategy call →