MVP Budget: How Much Should You Plan to Launch Your SaaS?

A custom SaaS MVP in France costs between 8,000 and 80,000 € in 2026, depending on whether you go through a senior freelancer or a premium agency. Most founders I meet don't understand why two quotes for the same project can differ by a factor of ten. The answer rarely comes down to technical complexity: it comes down to what each provider includes (or forgets) in the scope.

The budget that blows up is never the one that was too low to begin with. It's the one that didn't properly break out scoping, design, and development.

What an MVP budget really includes

The first mistake is confusing the "development budget" with the "MVP budget." Development accounts for 60 to 70% of the total. The rest is made up of the line items nobody mentions in their pitch quotes.

A complete MVP budget breaks down into four blocks. Technical scoping first: 3 to 5 days to lay down the functional specs, the data model, and the acceptance criteria. Count on 2,000 to 5,000 €. I consider this the most profitable line item in the whole project, because it cuts the risk of a mid-project rebuild in half.

Next comes design. A functional design (wireframes, component system) costs 2,000 to 5,000 €. A premium design with a complete visual identity climbs to 8,000, sometimes 15,000 €. For an MVP, functional design is enough in 90% of cases.

How much does a SaaS MVP cost in 2026?

According to the benchmark compiled by EID Lab on the French market, the average observed cost ranges between 8,000 and 35,000 € for custom code. Per the guide from developpeur-pour-startup.fr, a simple B2B SaaS (3 to 5 screens, authentication, one core business feature) starts at 15,000 € on the low end, and climbs to 45,000 € on the high end with 8 to 15 screens and third-party integrations.

The range depends less on the technology than on the number of features. Every added feature inflates the scope in a non-linear way (tests, edge cases, documentation). The rule I apply: if you can't describe your MVP in one sentence, it's too big. Bility, which has been building MVPs for over 12 years, confirms it: an MVP with more than five key features is no longer an MVP.

The development line item is the bulk of the budget, but it's the scoping that determines whether that budget will be respected.

Deployment and going live (CI/CD, hosting, monitoring, backups) add 1,000 to 3,000 € to the total. On a modern stack (Next.js + Supabase + Vercel, for example), this line item shrinks dramatically because the infrastructure is managed.

Senior freelancer, agency, offshore: the real comparison

The choice of provider changes everything. Not just the initial price, but the total cost over 12 months, technical debt included.

Freelance MVP vs agency: how to choose?

A senior freelance developer (8+ years of experience) charges between 450 and 700 € per day in France, according to the Malt / Comet 2025 data. The same profile through an agency costs 800 to 1,200 € per day (project manager, sales rep, office space, margin). As creation-site-pro.be sums it up, "a freelancer bills for actual work: no sales rep, no office space at 3,000 €/month."

Concretely, for a B2B SaaS with 3 to 5 features:

The senior freelancer wins on direct cost and on code consistency (a single person masters the whole thing). The agency makes sense when the project demands multiple skills in parallel (UX + back-end dev + mobile). For an MVP, that's rarely the case.

I broke down the full-time hire vs contract calculation over 12 months: on a contract basis at $210/day with an AI-augmented senior dev, the all-in monthly cost stays below a fully loaded full-time hire, with no commitment.

Should you build your MVP offshore?

The offshore daily rate (Vietnam, India, Eastern Europe) ranges between 150 and 300 €. On paper, the total budget seems cut in half. In practice, the final cost is often equivalent to a French freelancer, with technical debt as a bonus.

Three factors inflate the offshore bill. The time difference first: back-and-forth on the specs doubles the timeline when every question takes 24 hours of latency. Turnover next: on a 12-week project, it's not uncommon to see the lead dev swapped out halfway through. Technical debt last: code delivered without tests or documentation will cost you 30 to 50% of its price in refactoring within six months.

The real offshore math is the daily rate multiplied by the actual number of days, plus the cost of the technical debt you'll have to mop up afterward.

My field experience with developers in Vietnam is more nuanced: it really works when the process is strict, with written specs, acceptance criteria per block, and a technical lead on the client side reviewing every PR. Without that scoping, the advertised savings on the daily rate vanish into fixes.

How long does it take to ship a working MVP?

Budget and timeline are linked, but not the way most founders imagine. Doubling the budget doesn't cut the timeline in half. Adding a second dev to an MVP of 3 to 5 features introduces coordination that costs more than it brings in.

How long should you plan for a custom MVP?

The market data converges on these ranges:

A basic MVP (CRUD, authentication, API) ships in 4 to 8 weeks with a senior freelancer. An intermediate MVP (Stripe payments, user roles, dashboard) takes 8 to 12 weeks. An ambitious MVP (marketplace, real-time, AI components) can climb to 12-20 weeks, according to creation-site-pro.be.

These timelines assume clean scoping up front. Without written specs, add 2 to 4 weeks of ping-pong. That's why I break every project into short, testable blocks: each block has its acceptance criteria, the dev executes, tests, documents, then moves on to the next.

How does an AI-augmented dev speed up timelines?

With an AI-augmented senior developer (Claude Code, Cursor, Copilot), the boilerplate disappears. CRUD operations, database migrations, standard UI components, CI/CD config: all of it gets generated in a few hours instead of a few days.

On a recent engagement, I watched a senior dev ship a complete B2B SaaS (authentication, Stripe, dashboard, REST API) in 6 weeks where the agency quote called for 14 weeks. The gain comes from the fact that a dev who masters Claude Code produces clean code on the first pass, with tests and a clear architecture.

A word of caution: AI-generated code has to be governed by a written architecture (CLAUDE.md, ARCHITECTURE.md, conventions). Without that framework, an agent produces code that compiles but doesn't hold up over time.

What blows up (or shrinks) the budget

You know the ranges. The useful question now: how do you stay at the low end of the range without sacrificing the quality of the deliverable?

How do you cut the MVP budget without cutting everything?

First rule: cut features, not execution quality. An MVP with two well-built features beats an MVP with eight shaky ones. 42% of startups fail because of a bad MVP, creation-site-pro.be reminds us.

Second rule: invest in scoping. The 2,000 to 5,000 € of up-front specs saves 5,000 to 15,000 € in fixes. On every engagement, I start with a document covering the data model, user journeys, and acceptance criteria per feature. The dev only starts once that document is approved.

Third rule: pick a standard stack. Next.js, Supabase, Vercel, PostgreSQL cover 80% of B2B SaaS products. Managed hosting, built-in authentication, automatic deployment. Every proprietary brick inflates the budget and creates a dependency.

Fourth rule: one senior dev beats two juniors. The junior at 300 € a day produces code that works. The senior at 500-700 € produces code that holds up and that won't cost you a rewrite in six months. According to developpeur-pour-startup.fr, the junior risk is "uneven quality, questionable technical choices, the need for supervision."

Companies don't want "an MVP." They want to validate a business hypothesis as fast as possible, with the least technical risk.

"The MVP budget that blows up is never the one that was too low to begin with. It's the one that didn't break out scoping, design, and development."

Vincent Roye, June 2026

My verdict is clear. For a B2B SaaS with 3 to 5 features: plan for 15,000 to 25,000 € all-in with an AI-augmented senior dev on a contract basis. Below 10,000 €, you're sacrificing quality. Above 40,000 €, you're no longer building an MVP. The right move: a 3-to-5-day scoping phase, written specs, a senior dev coding with AI, and a scope tightened to the strict minimum that validates your hypothesis.