How to Build a SaaS MVP in 6 Weeks

6 weeks is a demanding timeline for a SaaS MVP. But it's achievable when you're ruthless about scope, using the right stack, and your team is running at full capacity. Here's the exact playbook we've used to launch multiple SaaS MVPs in 6 weeks or less.

Week 1: Scope Lock (Non-Negotiable)

The #1 reason 6-week timelines fail: scope creep. In week 1, you must define the 10–15 user stories that constitute the MVP — and explicitly document everything that's NOT in scope. Get this signed off by all stakeholders before writing a single line of code.

• →Define the one core problem you're solving
• →List the 10–15 user stories for MVP (not 40)
• →Define what's explicitly out of scope
• →Set up the tech stack (Next.js + PostgreSQL + Stripe is our default SaaS stack)
• →Set up CI/CD, error tracking, and staging environment

Week 2: Core Data Model + Auth

Database schema and authentication are the foundation. Get them right before building features. We use Prisma for the ORM and NextAuth or Clerk for authentication — reducing auth complexity to near zero.

Weeks 3–4: Core Feature Sprint

Build the features that deliver the core value proposition. Nothing else. Resist adding features. Every additional feature in weeks 3–4 means either cutting a core feature or missing the 6-week deadline.

Week 5: Payments + Polish

Stripe integration (subscriptions or one-time payments), onboarding flow, and basic email notifications. We use Stripe Checkout for speed — custom payment UI is a week 8 problem.

Week 6: Testing, Bug Fix, Launch Prep

End-to-end testing of the full user journey, bug fixes from QA, production environment setup, and launch. Ship on day 42.