The verdict in three sentences
Structured onboarding cuts first-year turnover by 20 to 30 % and saves HR half a day per hire. A custom platform (EUR 15,000 to 45,000) pays off once you onboard more than 40 people a year or run very different journeys per role. Below that, an HR SaaS at EUR 4 to 10 per employee/month remains the rational choice.
HR SaaS or dedicated platform: the 2026 comparison
A mid-market firm hiring in waves, with different journeys by site and function, quickly hits the limits of a standard SaaS. Custom lets you align the tool with your processes and existing HRIS.
| Criterion | HR SaaS | Custom |
|---|---|---|
| Entry cost | EUR 4 to 10/employee/month | EUR 15,000 to 45,000 one-off |
| Annual cost (200 staff) | EUR 9,600 to 24,000 | EUR 3,000 to 9,000 (support) |
| Time to launch | 2 to 4 weeks | 2 to 4 months |
| Multi-role journeys | Standard | Custom |
| HRIS/payroll integration | Limited connectors | Native |
| E-signature | Often an add-on | Included |
| Employer brand | Generic | Fully branded |
Modules and their retention impact
Every module should translate into HR time saved or turnover points avoided. An early departure costs 6 to 9 months of loaded salary in re-hiring and lost productivity.
| Module | Function | Measured impact |
|---|---|---|
| Preboarding journey | Documents and access before day 1 | -1 HR day per hire |
| Automated task checklist | Equipment, accounts, training | -30 % admin oversights |
| E-signature | Contracts and amendments | -3 days of delay |
| New-hire space | Culture, team, FAQ | +15 % engagement at 90 days |
| Manager 30/60/90-day tracking | Integration rituals | -20 to 30 % early turnover |
| HR reporting | Completion rate, satisfaction | Experience steering |
Mini case study
Marc is HR director at a 220-employee industrial mid-market firm in Nantes hiring 60 people a year. His 12-month turnover is 18 %, about 11 early departures. Each departure costs, in re-hiring and lost ramp-up, close to EUR 20,000, i.e. EUR 220,000/year. A custom platform at EUR 35,000 that brings early turnover from 18 to 12 % avoids 4 departures, i.e. EUR 80,000 saved in year one. HR also reclaims around 60 working days over the year. ROI lands in under 6 months.
FAQ
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What budget for a custom onboarding platform?
Plan EUR 15,000 to 45,000 depending on modules: EUR 15,000 to 25,000 for a journeys + checklists core, up to EUR 45,000 with e-signature, HRIS integration and 30/60/90-day manager tracking.
Doesn't an HR SaaS already do all this?
Partly. A SaaS covers standard journeys but struggles with deep HRIS integrations, highly differentiated journeys by role and employer-brand customization.
How long to deploy?
2 to 4 months. Two months for a core, four months with tested payroll and HRIS connectors.
How do I measure ROI?
On three indicators: drop in 12-month turnover, HR time saved per hire and journey completion rate. One turnover point avoided is often worth tens of thousands of euros.
Does the platform integrate with our payroll?
Yes. We plan connectors to common HRIS and payroll systems; integration effort is usually 15 to 25 % of the project budget.
Let's scope your project. Share your headcount, annual hiring volume and current HRIS; we frame a custom onboarding platform between EUR 15,000 and 45,000. 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.
