The verdict in three sentences
Off-the-shelf SaaS wins when your need is standard and non-differentiating: it is fast, low-risk, and the vendor carries maintenance. A custom platform wins when the software is your competitive advantage, or when per-user licensing cost explodes with growth. In 2026, the real question is not the entry price but the 5-year TCO and your reversibility.
The real cost: license vs build
SaaS looks cheap at 5 users and becomes a money pit at 80. Custom is a heavy upfront investment but with near-zero marginal cost per user.
| Criterion | Off-the-shelf SaaS | Custom platform |
|---|---|---|
| Entry cost | EUR 0-5,000 (setup) | EUR 60,000-150,000 |
| Cost per user | EUR 30-120/month | ~EUR 0 marginal |
| Time to deploy | 2-8 weeks | 4-9 months |
| Business fit | Limited to options | Total |
| Vendor lock-in | High | None |
| Scalability | Vendor roadmap | Your roadmap |
5-year TCO (2026 estimate)
Let's compare for a team of 40 users in Amsterdam, assuming a license at EUR 65/user/month.
| Item | Off-the-shelf SaaS (5 yr) | Custom (5 yr) |
|---|---|---|
| Licenses / initial build | EUR 156,000 | EUR 110,000 |
| Setup / integration | EUR 4,000 | included |
| Maintenance / support | included | EUR 40,000 |
| Hosting | included | EUR 18,000 |
| Specific enhancements | EUR 30,000 (3rd-party dev) | EUR 25,000 |
| 5-year total | EUR 190,000 | EUR 193,000 |
At 40 users the two options balance out; beyond 60 users, custom becomes markedly more cost-effective and you keep full control of the product.
The 4 questions that decide it
| Question | If YES, lean toward... |
|---|---|
| Is the process ultra-specific to your business? | Custom |
| Does a SaaS already cover 90% of the need? | Off-the-shelf |
| Will the number of users grow sharply? | Custom |
| Is the initial budget very tight? | Off-the-shelf |
| Is the software a competitive advantage? | Custom |
Mini case study
Sophie, director of a logistics mid-cap in Amsterdam (55 staff on tools), pays a management SaaS at EUR 70/user/month, i.e. EUR 46,200/year. Over 5 years that is EUR 231,000 without ever owning anything, and the vendor refuses two features critical to her business. She has a custom platform quoted at EUR 125,000 plus EUR 12,000/year in support. Over 5 years: EUR 185,000, i.e. EUR 46,000 saved, with a tool that fits her business exactly and belongs to her. Return on investment is reached in the 3rd year.
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FAQ
Is custom always more expensive upfront?
Yes, almost always. The initial investment of EUR 60,000 to 150,000 is higher than a subscription, but it amortizes with the number of users and removes the lifelong software rent.
What is vendor lock-in?
It is the risk of enduring price hikes, roadmap changes, or a SaaS shutdown with no alternative. With custom, you own the code and can switch providers freely.
Can you combine both approaches?
Absolutely. Many mid-caps keep a SaaS for the standard (payroll, CRM) and build custom only the differentiating core of their activity. This is often the most rational trade-off.
From how many users does custom pay off?
As a 2026 order of magnitude, beyond 50-60 users at EUR 60+/month, the custom TCO generally drops below the 5-year license cost.
How long to deliver a custom platform?
Expect 4 to 9 months depending on complexity, with intermediate releases from month 2 to validate usage as you go.
Let's scope your project. Send us your user count, your current SaaS, and your business pain points: we model your 5-year TCO and quote the custom alternative. 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.
