The verdict in three sentences
Integrating HRIS, payroll and time management costs 8,000 to 30,000 EUR excl. VAT in 2026 for a 2 to 4 month timeline. The connector automatically syncs employee data (contracts, hours, absences, variables) between systems, eliminating double entry. Result: fewer payroll errors, a lighter HR department and controlled GDPR compliance on sensitive data.
The HR flows to synchronize
Payroll feeds on dozens of data points produced elsewhere: contracts from the HRIS, hours from the time clock, absences from the HR portal, expenses, bonuses. Every flow re-keyed by hand is a risk of error on the payslip. The connector circulates this data automatically and at the right time.
| HR flow | Direction | Priority | Admin gain |
|---|---|---|---|
| HRIS -> payroll (contracts, salaries) | One-way | High | End of contract re-keying |
| Time management -> payroll (hours) | One-way | High | Exact hours, fewer errors |
| Absences/leave -> payroll | One-way | High | Automated counters |
| Variables/bonuses -> payroll | One-way | Medium | Secure calculation |
| Payroll -> accounting (entries) | One-way | Medium | Automatic entries |
| HRIS <-> time management | Two-way | Medium | Headcount up to date everywhere |
By handling the three priority flows first, an SME secures the bulk of the payslip within the first few weeks.
How much it costs by scope
Cost depends on the number of systems to connect, API availability and headcount. A point-to-point connector between two cloud tools costs far less than a multi-system integration with time management.
| Scope | Connected systems | 2026 cost (EUR excl. VAT) | Timeline |
|---|---|---|---|
| Basic | HRIS <-> payroll | 8,000 - 14,000 | 2-2.5 mo |
| Standard | + time management | 14,000 - 22,000 | 2.5-3.5 mo |
| Complete | + absences + accounting | 22,000 - 30,000 | 3-4 mo |
| Employee portal option | HR self-service | + 4,000 - 9,000 | +3-5 wks |
| Annual maintenance | Support + legal updates | 10-15% of project | - |
Maintenance matters in HR: payroll rules change every year and the connector must follow. Planning for this recurring cost prevents obsolescence.
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Mini case study
An HR director at a 150-employee SME in Toulouse re-keyed time-clock hours and absences into the payroll software every month: 2 days of work and an error rate generating 6 to 8 corrected payslips a month. We connected HRIS, time management and payroll for 21,000 EUR excl. VAT in 3 months. Double entry disappeared, corrected payslips dropped to fewer than 1 a month, and the HR department reclaimed about 20 days a year. As a bonus, access to employee data is logged and GDPR-compliant. Payback in about 15 months.
FAQ
Do we need to change our payroll software? No, in the vast majority of cases. If your payroll has an API or structured imports, we connect it as is. We only recommend a change if the tool is completely closed.
How do you ensure GDPR compliance? Through flow encryption, minimizing exchanged data, access logging and a defined retention period. Employee data is sensitive: compliance is part of the specification, not an option.
How long to connect payroll? From 2 to 4 months depending on scope. The HRIS-to-payroll flow, the most structuring one, is often operational in 6-8 weeks, then we add time management and absences.
What about time management without an API? Many time clocks export usable files; failing that, we use a database connector. Budget 3,000 to 6,000 EUR more for a system without a proper API.
Who maintains the connector when the law changes? That's the role of the maintenance contract (10-15%/year): adapting rules when payroll regulation changes. Without it, the connector degrades as reforms pile up.
Let's scope your project. Specify your tools (HRIS, payroll, time management), your headcount and the flows that cost you the most in re-keying; we'll price the connector and its recurring cost. 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.
