Short answer: a SaaS MVP typically costs $40,000–$150,000, and a full, scalable product $150,000–$500,000+. SaaS costs more than a one-off app because you're not just building software — you're building a product that has to be multi-tenant, secure, always-on, and able to grow.
Here's what drives the number, what an MVP really includes, and the ongoing costs most founders forget.
The quick version
| Stage | Typical range | What you get |
|---|---|---|
| MVP | $40k–$150k | The smallest version that proves the idea and can onboard real customers |
| Full v1 product | $150k–$350k | Polished, multi-tenant, integrations, admin, billing |
| Scalable platform | $350k–$500k+ | Built for scale, reliability, and complex workflows |
| Ongoing (per year) | 15–25% of build | Maintenance, security, infrastructure, iteration |
Why SaaS costs more than a regular app
A SaaS product carries costs a simple app doesn't:
- Multi-tenancy — safely serving many customers from one system, with their data isolated.
- Authentication & roles — sign-up, SSO, permissions, admin controls.
- Billing & subscriptions — plans, payments, upgrades, dunning.
- Security & compliance — you're holding other people's data, so this isn't optional.
- Reliability — customers expect it to be up 24/7.
- Scale — it has to keep working as usage grows.
Each of these is real engineering. It's why "just build a SaaS" is never just anything.
What drives your specific number
- Feature scope — the biggest lever. Every workflow, screen, and user type adds cost.
- Integrations — payment, CRM, email, third-party APIs.
- Complexity — real-time, AI features, heavy data, complex business rules.
- Design — a polished product costs more than a functional one.
- Team & rate — where your team is located changes the rate 3–5× (offshore senior teams can deliver enterprise quality at a fraction of US rates — as long as they get it right the first time). This is DataSpeaks' model: enterprise-grade, multi-tenant SaaS built at offshore economics and backed by ISO/IEC 27001:2022 and ISO 9001:2015 (both UKAS-accredited) — and because we own the outcome, you're not paying to rebuild it later.
Start with an MVP (almost always)
The single biggest way to control SaaS cost is to not build the whole thing first. An MVP:
- Includes only the features needed to prove the idea and onboard early customers.
- Costs a fraction of the full build.
- Tells you what to invest in next — with real user data instead of guesses.
Founders who build the "complete" product before validating it are the ones who overspend. Build small, learn, then scale what works.
The costs founders forget
- Maintenance: 15–25% of the build cost, every year. Software isn't "done" at launch.
- Infrastructure: hosting, databases, and third-party services scale with usage.
- Iteration: your first version won't be your last — budget for improvement.
Factor these in from day one, or they'll surprise you in month three.
How to keep SaaS cost under control
- MVP first, always.
- Cut scope, not quality — fewer features, built to last.
- Pick a partner who owns the outcome — rebuilds are the most expensive line item in SaaS.
- Design for scale early where it's cheap (architecture) and defer it where it's expensive (features you may not need).
The bottom line
A SaaS MVP runs $40k–$150k; a full, scalable product $150k–$500k+, plus 15–25%/year to run it. The number is driven by scope, complexity, integrations, and your team — and the smartest way to control it is to start with an MVP and scale what proves out. (For non-SaaS builds, see our custom software development cost guide.)
Thinking about building a SaaS? Get a free automation audit — we'll map the smallest first version that proves your idea, with a rough time and cost estimate. Or see how we build custom SaaS platforms and the operations platforms companies run their whole business on.