The verdict in three sentences
A custom B2B SaaS MVP costs between 20,000 and 45,000 EUR (about 22,000-49,000 USD) in 2026, over a 10 to 14 week timeline. The technical foundation alone (authentication, Stripe billing, dashboard) accounts for 8,000 to 15,000 EUR, and you must plan for 500 to 1,200 EUR/month of maintenance from day one. Paying less almost always means buying technical debt you will repay with your first real customer.
What a SaaS MVP costs in 2026: the breakdown
An MVP is not a mockup: it is a sellable product that keeps a single promise end to end. Here is the typical split for a founder-funded or seed-stage project.
| Line item | 2026 range (EUR) | Indicative time |
|---|---|---|
| Product scoping + specs | 2,500 - 5,000 | 1 - 2 weeks |
| UX/UI (light design system) | 3,000 - 7,000 | 1 - 2 weeks |
| Technical base (auth, Stripe billing, dashboard) | 8,000 - 15,000 | 3 - 4 weeks |
| Core feature (the SaaS promise) | 6,000 - 14,000 | 3 - 5 weeks |
| QA, deployment, docs | 2,000 - 4,000 | 1 week |
| MVP total | 20,000 - 45,000 | 10 - 14 weeks |
A senior SaaS developer's day rate in Western markets sits between 500 and 750 EUR in 2026 (700-900 EUR for a tech lead). A 30,000 EUR MVP therefore represents roughly 45 to 55 person-days.
Custom build vs in-house team: the real trade-off
Founders often weigh hiring a CTO against outsourcing. Over the first year, the gap is clear.
| Criterion | Vendor (MVP + maintenance) | In-house (1 senior dev) |
|---|---|---|
| Year 1 cost | 30,000 EUR + 10,000 EUR maintenance | 65,000 - 85,000 EUR loaded |
| Time to v1 | 10 - 14 weeks | 16 - 24 weeks (hiring included) |
| Risk if product fails | Contract stops | Layoff + liabilities |
| Ramp-up | Immediate | Gradual |
| Code ownership | Assigned by contract | In-house |
To validate a market, a vendor is almost always faster and less risky. In-house hiring pays off once product-market fit is confirmed and MRR is established.
Mini case study
Julien, founder of a route-management SaaS for logistics SMBs in Grenoble, has 40,000 EUR. He orders a 32,000 EUR MVP (scoping 4,000, base 12,000, core feature 12,000, QA 4,000) delivered in 12 weeks. His maintenance runs 800 EUR/month. At 79 EUR/month per customer, he needs 11 customers to cover maintenance, and about 34 months of MRR at 40 customers to amortize the initial build. By signing 40 customers in 10 months, he reaches 3,160 EUR/month MRR: full payback then lands around month 14. The MVP served its only purpose: proving the market before raising.
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FAQ
What is the minimum budget for a credible SaaS MVP in 2026?
Below 20,000 EUR, you get a prototype, not a sellable product with billing and security. Plan 25,000-30,000 EUR for a genuinely marketable MVP.
How long does an MVP take?
Between 10 and 14 weeks for one well-executed core feature. Each added module mechanically adds 2 to 4 weeks.
Should I integrate Stripe from the MVP stage?
Yes if you sell online: the billing module (subscriptions, trials, invoices) costs 3,000 to 6,000 EUR but avoids re-architecting later.
What is maintenance and why budget for it?
Application maintenance covers fixes, security and small evolutions: 500 to 1,200 EUR/month. Without it, your SaaS drifts technically within months.
Do I own the code?
With a serious vendor, yes: the IP assignment must be in the contract. Check that clause before signing.
Let's scope your project. Tell us your core feature, target budget (20-45,000 EUR) and launch timeline, and we'll define the MVP scope together. 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.
