The verdict in three sentences
A credible SaaS MVP in Berlin in 2026 is budgeted between 30,000 and 70,000 EUR for delivery in 3 to 4 months, around a single core feature. A Next.js + Supabase stack with integrated Stripe billing keeps infra at 50-500 EUR/month and shortens time-to-market. The real goal of the MVP isn't technical perfection but reaching 40 to 80 paying customers to validate the model.
Budget per sprint: the MVP roadmap
A 4-month MVP splits into 8 two-week sprints. Here's a 2026 costing for a Berlin founder, average day rate 550 EUR.
| Sprint | Objective | Effort (days) | Cost (EUR) |
|---|---|---|---|
| 1-2 | Scoping, design, Next.js + Supabase base | 14 | 7,700 |
| 3-4 | Core feature v1 + data model | 16 | 8,800 |
| 5 | Authentication, roles, onboarding | 8 | 4,400 |
| 6 | Stripe billing + subscription plans | 8 | 4,400 |
| 7 | Dashboard, transactional emails | 8 | 4,400 |
| 8 | QA, beta, deployment, analytics | 10 | 5,500 |
| Total | MVP delivered | 64 | 35,200 |
This 35,200 EUR scenario is the low end: adding a second feature, a mobile web app or integrations pushes toward 55,000-70,000 EUR.
Total cost of ownership and break-even
| Item | Lean MVP | Enriched MVP |
|---|---|---|
| Initial build | 30,000 - 40,000 EUR | 55,000 - 70,000 EUR |
| Supabase/Vercel infra/month | 50 - 150 EUR | 200 - 500 EUR |
| Stripe (commission) | 1.5% + 0.25 EUR/transaction | 1.5% + 0.25 EUR |
| Maintenance/year | 4,500 - 6,000 EUR | 8,000 - 10,500 EUR |
| Target price/customer/month | 29 - 49 EUR | 49 - 99 EUR |
| Customers for year-1 break-even | 60 - 80 | 40 - 60 |
At 39 EUR/month, you need about 77 customers to cover a 36,000 EUR build over 12 months (infra and maintenance included). Hence the value of setting a high enough price upfront: doubling the price halves the number of customers needed.
Mini case study
Thomas, founder of a Berlin B2B startup, wants to validate a scheduling SaaS for event agencies. He chooses a single-core-feature MVP (collaborative scheduling) delivered in 4 months.
Budget: 64 days at 550 EUR = 35,200 EUR, infra 120 EUR/month, Stripe integrated. Launch price: 49 EUR/month/agency. Target: 70 customers in 12 months.
At 70 customers, MRR reaches 3,430 EUR, i.e. 41,160 EUR/year. After deducting infra (1,440 EUR) and maintenance (5,000 EUR), the MVP pays back in about 14 months, then generates margin. Validation lets him raise funds or self-fund the v1.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
FAQ
Why limit the MVP to a single core feature?
Because each extra feature adds 8-16 days and delays market entry. A single-feature MVP validates real customer appetite before investing another 50,000 EUR in possibly useless options.
Is Next.js + Supabase really cheaper?
Yes, for an MVP. Supabase provides database, auth and storage out of the box, saving 10-15 build days. Infra starts at 50-150 EUR/month versus 300-800 EUR for a custom cloud architecture.
How much does Stripe cost on my revenue?
About 1.5% + 0.25 EUR per transaction for European cards in 2026. On 41,000 EUR of annual subscription revenue, that's under 900 EUR/year, marginal against the integration time saved.
How long until an MVP is really shippable?
3 to 4 months for a scoped team and a single feature. Under 10 weeks you sacrifice QA or billing; beyond 5 months it's no longer an MVP but a disguised v1.
What happens after validation?
With 40-80 paying customers and usage feedback, you prioritize the v1: requested features, scaling, integrations. The v1 budget is typically 1.5 to 2 times that of the MVP.
Let's scope your project. Tell us your core feature, target and indicative MVP budget, and we'll build the sprint-by-sprint roadmap. 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.
