The verdict in three sentences
Integrating a payroll system or HRIS with your app costs 8,000 to 25,000 EUR in Toronto in 2026, depending on the number of flows and the tool (Silae, PayFit, ADP). Because HR data is sensitive, privacy compliance (encryption, data minimisation, access logging) is part of the scope, not an option. Plan for 4 to 8 weeks and a fast return through the elimination of double entry.
Cost per HR flow
Each HR flow has its own sensitivity and complexity. Employees and absences are frequent and high-volume, contracts are sensitive and rarer. 2026 order of magnitude:
| HR flow | Direction | Sensitivity | Indicative cost |
|---|---|---|---|
| Employees / staff record | HRIS to app | High | 3,000 - 6,000 EUR |
| Absences / leave | Two-way | Medium | 2,500 - 5,000 EUR |
| Contracts / amendments | HRIS to app | High | 3,000 - 6,500 EUR |
| Time / clocking | App to payroll | Medium | 2,500 - 5,500 EUR |
| Variable pay elements | App to payroll | High | 3,500 - 7,000 EUR |
| Org chart / assignments | HRIS to app | Low | 1,500 - 3,500 EUR |
Data mapping (field matching, ID handling, history) often accounts for 25 to 35 % of the total budget: this is the item not to underestimate.
Cost by tool and compliance
Not every HRIS exposes an API of equal quality. 2026 estimate by API maturity:
| Tool | API quality | Integration cost | Privacy constraint |
|---|---|---|---|
| PayFit | Decent REST API | 8,000 - 16,000 EUR | Standard |
| Silae | Partner API | 12,000 - 22,000 EUR | High (payroll) |
| ADP | Enterprise API | 15,000 - 25,000 EUR | High |
| In-house HRIS / export | CSV/SFTP files | 6,000 - 12,000 EUR | To be secured |
| Lucca / Eurecia | REST API | 9,000 - 18,000 EUR | Standard |
On privacy, budget for encryption at rest and in transit, minimisation (transfer only what is needed), access logging and a defined retention period. These measures add 1,500 to 4,000 EUR but avoid major legal exposure on sensitive data.
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Mini case study
The HR director of a Toronto mid-cap (320 staff) wants to connect the HRIS (Silae) to the internal time-management app. Scope: 3 flows (employees, absences, variable pay elements). Quote: employees 5,000 EUR + absences 4,000 EUR + variables 6,000 EUR + mapping and privacy 6,000 EUR = 21,000 EUR. Gain: elimination of monthly payroll double entry (about 25 h/month at 45 EUR = 1,125 EUR/month) and no more payslip errors. Payback in under 18 months, before counting the reliability gained.
FAQ
Which tools are easiest to integrate? PayFit and modern HRIS (Lucca, Eurecia) expose clean REST APIs: 8,000 to 18,000 EUR. Silae and ADP, more payroll-focused, need partner access and cost more.
How long does integration take? Plan 4 to 8 weeks: 1 to 2 weeks of scoping and API access, 2 to 4 weeks of development, 1 to 2 weeks of testing across a full payroll cycle.
How do we handle privacy on payroll data? Encryption, minimisation, access logging and a retention period. This foundation costs 1,500 to 4,000 EUR and is your compliance evidence in case of an audit.
Can double entry be eliminated entirely? Yes, that is the goal: automatic sync of employees, time and variables. For an SME this often means 20 to 30 hours/month saved and a sharp drop in payslip errors.
What if the HRIS has no API? We use secure export/import (CSV over encrypted SFTP) for 6,000 to 12,000 EUR. Less real time, but enough for a monthly payroll sync.
Let's scope your project. Tell us your HRIS (Silae, PayFit, ADP...), the flows to connect and your indicative budget. 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.
