The verdict in three sentences
In 2026, a B2B SaaS MVP built to validate a market or prepare a raise costs EUR 25,000 to 60,000 in London, with one single core feature delivered in 8 to 14 weeks. The trap isn't the price, it's the scope: every feature added before product-market fit burns cash without reducing risk. The right question isn't "how much does it cost" but "what is the smallest product that proves customers will pay".
What an MVP budget actually covers in 2026
An MVP isn't a stripped-down version of the final product: it's a measurement instrument. The budget splits across scoping, designing one core feature, development, and a feedback loop. In London, the 2026 day rate for a senior full-stack developer at an agency sits around EUR 550 to 800, a product designer around EUR 480 to 700.
| Item | Share of budget | 2026 range (EUR) | Deliverable |
|---|---|---|---|
| Scoping & product design | 15 % | 4,000 – 9,000 | Flows, mockups, prioritized backlog |
| Core feature (dev) | 45 % | 12,000 – 27,000 | 1 complete workflow in production |
| Auth, billing, GDPR | 15 % | 4,000 – 9,000 | Accounts, payment, compliance |
| Infra & deployment | 10 % | 2,500 – 6,000 | Hosting, CI/CD, monitoring |
| Post-launch iterations | 15 % | 3,500 – 9,000 | 2-3 tuning sprints |
| Total | 100 % | 25,000 – 60,000 | Measurable MVP |
An MVP under EUR 25,000 exists, but it slides fast toward a throwaway prototype: technical debt, no proper authentication, impossible to show a serious fund.
No-code vs custom: the switch point
No-code (Bubble, Retool, Softr + Airtable) accelerates the first 6 months, then becomes a ceiling once volume or business logic grows. Custom costs more upfront but handles load and holds up better in due diligence.
| Criterion | No-code | Custom |
|---|---|---|
| Initial MVP cost | EUR 8,000 – 25,000 | EUR 25,000 – 60,000 |
| Time to first customer | 4 – 8 weeks | 8 – 14 weeks |
| Monthly platform cost | EUR 200 – 900/mo | EUR 80 – 300/mo |
| User ceiling | ~500 – 2,000 active | Unlimited (infra-bound) |
| Due-diligence value | Low (vendor lock-in) | High (owned asset) |
| Recommended switch point | — | > 300 paying customers or raise > EUR 500k |
Simple rule: no-code to prove demand, custom once demand is proven. A no-code pivot costs EUR 2,000 to 6,000; a poorly scoped custom pivot can top EUR 20,000 — hence the discipline of coding only what's validated.
Mini case study
Thomas, founder of a B2B HR startup in London, was torn between a full product at EUR 90,000 and an MVP. He chose a custom MVP at EUR 38,000, focused on one feature: automated candidate follow-ups. Delivered in 11 weeks. Three months later: 22 paying customers at EUR 79/mo, i.e. EUR 1,738 MRR and, above all, proof of usage. That traction let him raise EUR 600,000 in pre-seed. The MVP cost 6 % of the amount raised, and avoided EUR 52,000 spent on features customers never asked for.
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FAQ
How long for a B2B SaaS MVP in 2026?
Count 8 to 14 weeks for a well-scoped core feature. Under 8 weeks it's more of a prototype; beyond 14, the scope is too broad for a true MVP.
No-code or custom to raise funds?
No-code is enough to prove demand before a pre-seed. For a seed > EUR 500,000, funds inspect the technical asset: a clean custom MVP reassures more in due diligence.
What if I have to pivot?
A pivot is normal and expected. In no-code it costs EUR 2,000 to 6,000; in custom, EUR 8,000 to 20,000 depending on scale. That's why the MVP is limited to one validatable feature.
Can I start with under EUR 25,000?
Yes, in no-code or by cutting the scope to one ultra-simple workflow. But beware of "cheap" MVPs that become technical debt impossible to evolve.
What budget after launch?
Set aside 15 to 20 % of the initial budget for 2-3 iteration sprints within 90 days. That phase turns a launch into measurable traction.
Let's scope your project. Tell us your core feature, target customer and indicative budget, and we'll scope the smallest MVP that proves your market. 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.
