The verdict in three sentences
A vertical B2B SaaS launched in Europe in 2026 needs a first-year budget of 70,000 to 190,000 EUR, with the MVP taking roughly half. The most common mistake is to spend everything on the product and forget to reserve 25 to 40% of the budget for acquisition to sign the first 10 to 30 paying customers. Public schemes such as France's Bourse French Tech (up to 30,000 EUR) and honour loans absorb a real share of the risk, provided you apply before spending the first euro on development.
The budget line by line over twelve months
A founder coming from the industry (accountant, logistics manager, clinic administrator) has the decisive advantage: they know their future customers' pain. The budget should reflect that strength, with scope narrowed to the one business workflow that saves time, not a list of generic features. In France and Lyon specifically, MVPs land between 40,000 and 90,000 EUR; across Western Europe, vertical SaaS MVPs typically cost 60,000 to 150,000 EUR.
| Line item | 2026 range (EUR, excl. VAT) | Share of budget | Comment |
|---|---|---|---|
| MVP (design, development, testing) | 40,000 to 90,000 (France), up to 150,000 (EU) | 45 to 55% | 3 to 5 months of build |
| Cloud infrastructure and tools | 2,400 to 18,000 | 3 to 10% | 200 to 1,500 EUR per month |
| Acquisition (trade shows, content, outreach, ads) | 20,000 to 55,000 | 25 to 40% | Industry events, LinkedIn, demos |
| Legal (T&Cs, GDPR, incorporation, trademark) | 3,000 to 8,000 | 3 to 5% | A customer DPA is essential in B2B |
| Post-launch maintenance and iterations | 6,000 to 15,000 | 8 to 10% | Fixes and early customer feedback |
| Accounting, banking, insurance | 2,500 to 5,000 | 2 to 4% | Professional liability required by most buyers |
| First-year total | 74,000 to 191,000 | 100% | 2026 order of magnitude |
The upper range fits a product handling sensitive data (health, finance) or integrating several third-party APIs. The lower range assumes a single workflow, a single integration and a founder who runs the sales demos personally.
Funding the first year without raising equity
In Lyon, the support ecosystem is dense: incubators, Réseau Entreprendre, Initiative Lyon, Bpifrance. Comparable schemes exist across Europe. The point is to stack them in the right order, because the Bourse French Tech must be requested before most expenses are committed.
| Funding source | Typical 2026 amount | Time to obtain | Condition |
|---|---|---|---|
| Bourse French Tech (Bpifrance) | Up to 30,000 EUR | 2 to 4 months | Grant, co-funding required |
| Honour loan (Initiative, Réseau Entreprendre) | 15,000 to 50,000 EUR | 2 to 3 months | Zero-interest personal loan |
| Matching bank loan | 30,000 to 80,000 EUR | 1 to 2 months | Leverage on honour loans |
| Personal savings and unemployment benefits | 10,000 to 40,000 EUR | Immediate | Benefits maintained during launch |
| Pre-sales and letters of intent | 5,000 to 20,000 EUR | Variable | Commitment from 3 to 5 pilot customers |
| Innovation tax credit (CII) | 20 to 30% of eligible spend | Following year | Solid technical file needed |
A well-prepared founder often funds 60 to 80% of the first year without giving up equity. Pre-sales carry double value: they reassure the bank and they force you to validate pricing before writing code.
Setting realistic commercial targets
A vertical B2B SaaS rarely sells for less than 150 EUR per customer per month, and often between 300 and 900 EUR. With a 1 to 3 month sales cycle, targeting 10 to 30 paying customers at 12 months is realistic. Beyond that you need a sales team. Below 10, the product or the price is in question.
| 12-month indicator | Conservative | Ambitious |
|---|---|---|
| Paying customers | 10 | 30 |
| Average monthly price | 250 EUR | 450 EUR |
| ARR reached | 30,000 EUR | 162,000 EUR |
| Acquisition cost per customer | 2,500 EUR | 1,500 EUR |
| Tolerated monthly churn | 2% | 1% |
Mini case study
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Nathalie, former operations director at a transport group in Lyon (illustrative persona), launches a route-planning SaaS for regional hauliers. Budget: MVP 62,000 EUR, infrastructure 450 EUR a month or 5,400 EUR, acquisition 32,000 EUR, legal and miscellaneous 9,000 EUR, maintenance 9,000 EUR. Total: 117,400 EUR excl. VAT. Funding: Bourse French Tech 30,000 EUR, honour loan 35,000 EUR, bank loan 40,000 EUR, personal contribution 12,400 EUR. Target: 18 customers at 380 EUR a month, or 82,080 EUR of ARR by the end of year one. With an 85% gross margin, operating break-even comes at around 35 customers, reachable during year two.
FAQ
How much does a vertical B2B SaaS MVP cost in 2026?
In France, a serious MVP costs 40,000 to 90,000 EUR excl. VAT; across Western Europe, 60,000 to 150,000 EUR. Below 30,000 EUR, the product is rarely sellable to demanding business customers.
What share of the budget should go to customer acquisition?
Plan for 25 to 40% of the first-year budget. An excellent product without demos, trade shows or outreach often stalls at 3 or 4 customers from the founder's personal network.
Can the Bourse French Tech fund development?
Yes, it covers up to 30,000 EUR of feasibility spending, including prototype development. You must apply before committing the spend and show co-funding.
How many paying customers should I target at twelve months?
Between 10 and 30 customers at an average of 250 to 450 EUR a month. That is 30,000 to 160,000 EUR of ARR, a threshold that opens the door to a seed round.
Should I go multi-tenant from day one?
Yes in 90% of cases, because infrastructure per customer stays between 3 and 15 EUR a month. A dedicated instance is only justified for enterprise customers who contractually require it.
Let's scope your project. Send us your target workflow, indicative budget and planned launch date: we will price the MVP, the infrastructure and the delivery schedule. 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.