The verdict in three sentences
A credible B2B SaaS MVP costs between 25,000 and 60,000 EUR in 2026 and ships in 8 to 14 weeks. You are not funding a complete product but a single core feature able to prove that customers will pay. The real success milestone is not the launch: it is 10 to 20 paying customers that trigger (or not) the next investment.
What the budget actually covers
An MVP is not a stripped-down final product: it is the smallest scope that tests a commercial hypothesis. The budget concentrates on the value-generating journey, not on peripheral screens.
| Item | 2026 range (EUR) | Share of budget |
|---|---|---|
| Scoping + product design | 4,000 - 9,000 | 15-20 % |
| Core feature + journey | 12,000 - 28,000 | 45-50 % |
| Auth, payment, accounts | 4,000 - 9,000 | 15 % |
| Infra, CI/CD, monitoring | 2,500 - 6,000 | 10 % |
| QA + fixes | 2,500 - 8,000 | 10-15 % |
| MVP total | 25,000 - 60,000 | 100 % |
2026 day rates for a serious vendor range from 450 to 650 EUR for a full-stack profile, more for a tech lead. A 40,000 EUR MVP therefore represents roughly 60 to 85 person-days.
The cost after launch
The classic trap: believing spending stops at go-live. Post-launch iteration is where product-market fit is won.
| Recurring item | 2026 order of magnitude |
|---|---|
| Stack + infra (hosting, DB, email) | 80 - 250 EUR/month |
| Product iteration (2-4 d/month) | 1,000 - 2,600 EUR/month |
| Support & fixes | 300 - 800 EUR/month |
| Analytics + billing tools | 50 - 150 EUR/month |
| Monthly total | 1,400 - 3,800 EUR/month |
Budget 3 to 6 months of iteration after launch to tune the product to early customer feedback before deciding on a scale-up.
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Mini case study
Thomas, founder of a route-planning SaaS for logistics SMBs in Nantes, has 45,000 EUR of seed budget. He funds a 38,000 EUR MVP (11 weeks, core feature = automatic route planning) and keeps 7,000 EUR for 3 months of iteration.
His validation target: 15 paying customers at 89 EUR/month, i.e. 1,335 EUR MRR. At that level he proves traction and raises to fund V2. If he only reaches 4 customers in 3 months, he pivots without having burned 120,000 EUR on a full product. The MVP saved him roughly 80,000 EUR of premature development.
FAQ
How long to ship a B2B SaaS MVP? Count 8 to 14 weeks depending on core-feature complexity. Under 8 weeks the scope is often too thin to convince a B2B buyer; beyond 14 it is no longer an MVP.
Can I build an MVP for under 25,000 EUR? Yes with no-code or an ultra-reduced scope, but beware: a B2B buyer expects reliability, security and integration. Below 25,000 EUR the risk of a full rebuild is high.
How many paying customers to validate? The common threshold is 10 to 20 recurring paying customers. Below that it is hard to tell a real market from the enthusiasm of your close network.
Should I charge from the MVP stage? Yes. The only proof of value that counts in B2B is a customer who pays. A free trial converting to paid beats a thousand free signups.
What to keep for V2? Defer everything that is not the core feature: advanced reporting, fine-grained roles, third-party integrations, mobile. Those come after validation, funded by MRR.
Let's scope your project. Tell us your core feature, target market and seed budget: we frame a realistic MVP with a customer validation milestone. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
