The verdict in three sentences
If your processes fit the standard of an off-the-shelf SaaS, configuration is cheaper and faster (20,000 to 80,000 EUR over 3 years). If your competitive edge rests on specific processes, a custom platform (60,000 to 150,000 EUR) removes licenses, workaround debt and vendor lock-in. The right question is not the purchase price but the total cost of ownership (TCO) over 3 to 5 years relative to process fit.
3-year TCO comparison
The standard hides an invisible cost: workarounds, paid modules and version upgrades. Here is an order of magnitude for 2026, mid-market company (50-250 staff).
| Line item | Off-the-shelf | Custom |
|---|---|---|
| Setup / development | 20,000 - 60,000 EUR | 60,000 - 150,000 EUR |
| Licenses / year | 8,000 - 30,000 EUR | 0 EUR |
| Integrator / changes yr | 6,000 - 20,000 EUR | 9,000 - 25,000 EUR |
| Hosting / year | included - 6,000 EUR | 2,000 - 8,000 EUR |
| 3-year TCO (indicative) | 62,000 - 168,000 EUR | 93,000 - 249,000 EUR |
| Process fit | Medium | Total |
| Vendor lock-in | High | None |
At equal volume, off-the-shelf wins on standard processes; custom wins once working around the standard exceeds 30 % of the need.
Decision grid: four criteria
Decide on facts, not a tech preference. Score each criterion 1 (standard) to 5 (very specific).
| Criterion | Leans off-the-shelf if | Leans custom if |
|---|---|---|
| Process specificity | Classic operations | Atypical, competitive edge |
| Volume / performance | Standard | High volume, real time |
| Integrations | Existing connectors | Proprietary APIs, legacy |
| Vendor lock-in | Acceptable | Unacceptable strategic risk |
| UX / adoption | Sufficient | Differentiating experience needed |
If you stack three criteria at 4-5, custom pays back over 3 years despite the higher entry cost.
Mini case study
Sophie, CEO of a logistics mid-cap in Lyon, is torn over her route-planning tool. Configured off-the-shelf: 45,000 EUR setup + 18,000 EUR/year licenses and changes, i.e. 99,000 EUR over 3 years, but 40 % of her business rules need workarounds. Custom: 110,000 EUR + 15,000 EUR/year, i.e. 155,000 EUR over 3 years, no license, plus an in-house route optimizer that cuts kilometers by 12 %. On a fleet burning 900,000 EUR of fuel/year, that 12 % (108,000 EUR saved/year) repays the gap in year one.
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FAQ
Is off-the-shelf always cheaper?
At purchase yes, but recurring licenses and workarounds often flip the math over 3-5 years when processes are specific.
Does custom create technical debt?
Not if built well (modern stack, tests, docs). Real debt comes from workarounds piled onto an ill-fitting standard.
Can you mix both?
Yes: keep off-the-shelf for accounting/HR and build custom for the differentiating core. Often the optimal trade-off.
What is the timeline for each?
Configured off-the-shelf: 2 to 4 months. Custom platform: 4 to 9 months depending on scope.
How do I avoid the license trap?
Model the 5-year license cost including user growth; that is where custom becomes competitive.
Let's scope your project. Send us your 5 most specific processes and your volume, and we'll return a costed off-the-shelf vs custom TCO comparison. 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.