The idea
A SaaS (Software as a Service) platform delivers software over the internet on a subscription basis. Instead of selling a one-time license, you charge monthly or annually — which means predictable revenue and a business that compounds over time.
Founders build SaaS products because the economics are exceptional. Gross margins typically run 70–85%, and once you've acquired a customer, recurring billing means you earn from them month after month without re-selling. The most common SaaS MVPs solve a specific workflow problem — project management for a niche, invoicing for freelancers, scheduling for clinics, analytics for e-commerce.
The key to a successful SaaS MVP isn't feature completeness. It's solving one core problem so well that users will pay for it before you've built everything else.
Tech stack we'd use
Core features (MVP scope)
- Authentication and user management: Sign up, login, password reset, email verification. Role-based access: admin, member, viewer. Powered by Auth0 for enterprise-grade security.
- Subscription billing: Two or three pricing tiers with monthly/annual toggle. Stripe Checkout for payment collection, customer portal for plan management, and webhook handling for billing events.
- Core application feature: Whatever your SaaS actually does — this is the one feature that justifies the subscription. We build this first and make it excellent.
- Team/workspace management: Invite team members by email, assign roles, manage permissions. Multi-tenant architecture so each organization's data is isolated.
- Dashboard and analytics: A clean dashboard showing key metrics relevant to the user's workflow. Charts, tables, and KPIs that make the product feel valuable every time they log in.
- Settings and profile: Account settings, billing management, notification preferences, API key generation. The 'boring' screens that make a SaaS feel complete.
- Email notifications: Transactional emails for key events — welcome, invoice, team invite, usage alerts. We use Resend or Postmark for reliable delivery.
- Marketing site: Landing page, pricing page, and docs — all server-rendered with Next.js for SEO. Converts visitors to trial users.
What we'd cut from v1
- Public API: APIs are a growth multiplier for SaaS, but building a well-documented, versioned, rate-limited API is a project unto itself. Wait until customers ask for integrations.
- Advanced reporting and exports: CSV exports and custom report builders are nice-to-have. For v1, the built-in dashboard is sufficient. Add export features based on what users actually need.
- White-labeling: Allowing customers to brand the product as their own is an enterprise feature. It adds complexity to every template, email, and UI component. Save it for the enterprise tier.
- Mobile app: Unless the core use case is mobile-first, a responsive web app works fine. Build native apps when you have enough users to justify the maintenance cost.
Cost breakdown
| Phase | What's Included | Cost Range | Timeline |
|---|---|---|---|
| Discovery & Design | User research, information architecture, UI/UX design, design system | $4,000–$8,000 | 2 weeks |
| Frontend Development | Dashboard UI, billing pages, settings, marketing site, responsive design | $6,000–$16,000 | 3–5 weeks |
| Backend Development | API, multi-tenant database, Auth0 integration, Stripe Billing, email system | $7,000–$18,000 | 4–5 weeks |
| Testing & Launch | End-to-end testing, subscription flow testing, staging, deployment | $2,000–$4,000 | 1–2 weeks |
| Post-launch Support | Bug fixes, billing edge cases, performance tuning (30 days) | $1,000–$4,000 | Ongoing |
The build timeline
Weeks 1–2: Discovery and design. We define the core value proposition, map user flows, and design the key screens — dashboard, settings, billing, and the main application feature. You'll have a clickable prototype to test with potential users.
Weeks 3–7: Core development. Database schema with multi-tenant architecture, Auth0 integration, Stripe Billing setup (plans, webhooks, customer portal), and the core application feature. Auth and billing alone take 2–3 weeks to do properly — especially handling edge cases like failed payments, plan upgrades mid-cycle, and team seat management.
Weeks 8–11: Frontend build and integration. Dashboard UI, charts and analytics components, settings pages, marketing site with pricing page. We connect everything to the backend and ensure the billing flows work end-to-end.
Weeks 12–14: Testing, polish, and launch. We test every billing scenario, run security checks on the auth flow, optimize performance, set up monitoring, and deploy. You launch with a product that can accept real payments from day one.
Why this approach
We use Auth0 instead of building auth because SaaS authentication is surprisingly complex. Password hashing, token rotation, social providers, MFA, session management, brute force protection — Auth0 handles all of it for $0 on the free tier (up to 7,500 active users). Rolling your own auth to save $0 is poor ROI.
Stripe Billing over alternatives because it handles the hardest parts of SaaS billing: proration when users switch plans, dunning emails for failed payments, tax calculation, and the customer self-service portal. Building this from scratch typically takes 4–6 weeks and produces a worse result.
We recommend PostgreSQL over NoSQL for SaaS because your data is inherently relational — users belong to organizations, organizations have subscriptions, subscriptions have invoices. Trying to model this in MongoDB creates complexity that PostgreSQL handles natively.
The $20K–$50K range is for the MVP. The low end covers a simple SaaS with one core feature and basic billing. The high end includes custom design, multiple user roles, advanced dashboard analytics, and a polished marketing site.
Frequently asked questions
A SaaS MVP typically costs $20,000–$50,000 with a professional development team. This covers authentication, subscription billing, the core application feature, and a marketing site. More complex SaaS products with enterprise features, multiple integrations, and custom reporting can run $80,000–$250,000+.
A SaaS MVP takes 10–14 weeks from kickoff to launch. The biggest time sinks are authentication setup (1–2 weeks), billing integration (2–3 weeks), and the core application feature (3–5 weeks). Adding an API layer or mobile app extends the timeline by 4–8 weeks.
You can validate a SaaS idea with no-code tools like Bubble or Softr, but you'll face limitations around custom billing logic, performance at scale, and multi-tenant data isolation. No-code works for prototyping and initial validation, but most SaaS products that reach $10K+ MRR are running on custom code.