“How much does it cost to build a SaaS?” is the most-asked question in our intro calls and the one with the most useless answers floating around. Online estimates range from $20k to $2M for what sounds like the same product. Both numbers are technically true. Neither is helpful.
Here’s how we actually budget a B2B SaaS build in 2026, what drives the cost swings, and the line items you can’t skip without paying for them later anyway.
The fast answer
- $40–75k— clickable MVP for a single workflow, 2–3 months, used to validate the bet.
- $120–220k— production v1 of a multi-tenant B2B SaaS, 4–6 months, ready for paying customers.
- $300k+— SaaS for a regulated industry (pharma, healthcare, finance) with audit trails, validation packages and compliance certifications.
These ranges assume a competent shop with a senior team, not the cheapest quote you can find on Upwork. A bad $20k MVP costs $300k to rescue eighteen months later. We’ve been on the rescue side enough times to know.
Where the budget actually goes
Engineering + design + QA is consistently ~70%of any SaaS budget. Everything else — PM, DevOps, launch ops — is overhead that gets cut first when timelines slip. That’s usually a mistake.
Engineering (~38%)
The biggest single line item. Senior full-stack engineers shipping in a modern stack (Next.js / Postgres / cloud-native) plus a tech lead who actually reviews code. The rate range we see in 2026: $80–$180/hr depending on geography, with senior Indian and Eastern European shops doing the bulk of the work at the lower end of that band.
UX & design (~18%)
Underspending here is the #1 cause of MVPs nobody uses. A real UI/UX engagement covers research, IA, wireframes, a design system, and accessibility from day one. Skipping it saves ~15% upfront and costs you 40% in rework + 60% in conversion later.
QA & testing (~14%)
Unit, integration, end-to-end and accessibility tests. The shops that quote 8% spend another 8% on the bugs they would have caught. Net cost is the same; you just paid for it in delays.
Cloud & DevOps (~12%)
Pipelines, infrastructure-as-code, observability and the first six months of cloud bills. Closer to 18% if you’re building for regulated industries where audit logs, encryption and segregated environments are non-negotiable.
Product management (~10%)
A PM who actually owns the roadmap, runs the demos and writes the docs. Treating PM as “the engineers can do that themselves” is how products lose three months to scope creep.
Launch & ops (~8%)
Marketing site, analytics, billing integration, onboarding emails and the first 90 days of support. Often forgotten in the quote, always paid for in launch month.
The two variables that swing the number 3x
Most cost estimates fail because they ignore two questions:
1. How sharp is the scope?
A 10-page PRD that lists 47 must-have features will produce a 9-month estimate that slips to 14. A 2-page PRD that lists 5 features and 30 explicit non-goals will produce a 3-month estimate that ships on time. The PRD itself is the cheapest cost lever you have.
2. Are you in a regulated industry?
Pharma, healthcare and finance roughly double everything. Not because the engineering is twice as hard — because the engineering needs to be wrapped in validation, audit packages and a security model that survives third-party assessment. If you’re building a LIMS or anything touching ePHI, plan for it from day one.
Where to spend more, where to spend less
- Spend more on— senior engineering leadership, design research, observability, the design system.
- Spend less on— custom illustrations for v1, niche AI features you can’t name a user for, brand redesigns before launch, swag.
- Don’t spend at all on — native iOS + Android and responsive web simultaneously in v1. Pick one. Add the others when you have users asking for them.
Takeaways
- Budget $120–220k for a real B2B SaaS v1; $40–75k for an MVP; double both numbers if you’re regulated.
- Engineering + design + QA is ~70% of any honest quote.
- The sharpness of the PRD is the single biggest cost lever.
- The cheapest quote in the market is almost never the cheapest final invoice.
