TL;DR
Building a SaaS product costs $15,000–$200,000+ depending on complexity. A lean validation MVP (basic auth, one core feature, payment) runs $15,000–$40,000. A production-ready SaaS with multi-tenancy, dashboards, onboarding, and admin costs $50,000–$150,000. Enterprise-grade platforms go higher. Timeline: 2–9 months.
What Determines SaaS Development Cost
SaaS products live on a spectrum. A simple tool that does one thing well is orders of magnitude cheaper than a platform that handles billing, permissions, integrations, and analytics across thousands of accounts.
The five biggest cost factors:
1. Authentication and User Management
Every SaaS needs auth. Options range from Firebase Auth ($0 to implement, minimal cost) to custom role-based access control systems. Add multi-tenancy (organisations, teams, invite systems) and you’re looking at $5,000–$15,000 in auth work alone.
2. Billing and Subscription Infrastructure
Stripe integration with subscription management, usage-based billing, free trials, upgrade/downgrade flows, and invoice generation adds $5,000–$20,000. This is often underestimated.
3. Core Product Features
This is the biggest variable. A simple task manager has different complexity than an AI-powered analytics tool. Budget based on user stories — typically $800–$2,500 per significant feature.
4. Dashboards and Data Visualisation
If users need to see charts, tables, or analytics, add $5,000–$20,000 depending on complexity.
5. API and Integrations
A public API, webhooks, and third-party integrations (Zapier, HubSpot, Slack) add $5,000–$25,000.
SaaS Cost by Stage
Stage 1: Validation MVP ($15,000–$40,000)
Proves the concept works with real users. Contains:
- Auth (sign up, login, password reset)
- One core feature — the thing that delivers the main value
- Basic dashboard
- Stripe subscription billing
- Admin panel for you to manage users
Timeline: 6–12 weeks with a small team.
This stage is about learning fast, not building perfectly. The code will be rewritten as you learn.
Stage 2: Growth-Ready Product ($40,000–$100,000)
After validation, you need to scale. This stage adds:
- Full onboarding flow (reduces churn)
- Feature expansion based on user feedback
- Multi-seat / team accounts
- Usage analytics
- Email automation (welcome, activation, retention)
- Public-facing marketing site with SEO
Timeline: 3–6 months.
Stage 3: Enterprise-Ready Platform ($100,000–$250,000+)
For SaaS products targeting mid-market or enterprise buyers:
- SSO (SAML, Okta)
- Advanced RBAC
- Audit logs
- Custom domains per tenant
- SOC 2 compliance preparation
- API with documentation
- Dedicated onboarding flows per segment
Timeline: 6–18 months ongoing.
Build vs Buy vs Hybrid
Not every component needs to be built from scratch. Smart founders use:
| Function | Build Cost | SaaS Alternative | SaaS Cost |
|---|---|---|---|
| Auth | $5,000–$15,000 | Clerk, Auth0 | $0–$200/month |
| Billing | $5,000–$15,000 | Stripe Billing | % of revenue |
| $2,000–$6,000 | Resend, SendGrid | $20–$200/month | |
| Analytics | $3,000–$10,000 | PostHog, Mixpanel | $0–$500/month |
| Search | $3,000–$8,000 | Algolia, Typesense | $50–$500/month |
For early-stage products, buying solved components saves months of development. As you scale, you may build custom versions to reduce cost and increase control.
Agency vs In-House vs Offshore
UK/US Agency: $150–$250/hour
Highest cost, but lowest risk. Experienced teams that have built SaaS before avoid expensive mistakes. Best for funded startups with a $40k+ budget.
Freelancer Collective: $80–$150/hour
A hired designer + developer + QA. Cheaper but requires strong founder management. Works well for scrappy MVPs.
Offshore Team: $25–$60/hour
Eastern Europe, India, or Southeast Asia. Can be excellent — but requires very clear specs, strong communication, and budget for rework. Best approached after you’ve validated the concept with a local team.
Frequently Asked Questions
How long does it take to build a SaaS MVP?
A lean MVP with auth, one core feature, and Stripe billing takes 6–12 weeks with a dedicated small team (1 designer, 1–2 developers).
Can I build a SaaS for under $10,000?
Technically yes, with no-code tools (Bubble, Glide) or by using an offshore solo freelancer. But for anything meant to scale, the technical debt accrued at that price point often costs more to fix later than building it properly the first time.
Do I need a technical co-founder?
Not necessarily. Many successful SaaS products were built entirely by agencies or contractor teams for non-technical founders. What you need is clear product thinking and a good brief.
What’s the most common SaaS budget mistake?
Underestimating billing and auth. Founders focus on the “interesting” features and forget that subscription management, invoice generation, and user roles are complex, time-consuming engineering work.
How much should I budget for SaaS ongoing costs?
After launch, budget 15–25% of your build cost per year for maintenance, security updates, infrastructure, and incremental development.
Final Thoughts
The cost of building a SaaS product is ultimately a function of scope. The best founders we work with start small — one feature, one user segment, one pricing tier — then expand based on what they learn.
If you’re at the planning stage, we’d love to help you scope your MVP properly so you’re not over- or under-building.