The verdict in three sentences
For an independent staffing agency placing 200 to 1,500 temps a week, replacing your whole back-office system (EUR 1,000 to 4,000, about USD 1,100 to 4,400, a month in licences) is rarely necessary if payroll already works. The real bottleneck is manual timesheet entry: a custom portal where clients approve hours online, connected to your existing payroll software, costs EUR 25,000 to 50,000 and ships in 3 months. With payroll errors estimated at 1 to 3 % of gross pay, payback is measured in months.
The hidden cost of paper timesheets and Excel
Every Friday, timesheets arrive as WhatsApp photos, scanned PDFs or paper sheets signed by a supervisor. Recruiters retype everything, call the client about a missing night hour or meal allowance, then fix payroll the following month. In logistics, food processing and construction, night, Sunday and overtime premiums multiply the errors.
| Indicator (agency placing 600 temps a week) | Paper timesheets and Excel | Client-approved timesheet portal |
|---|---|---|
| Weekly entry time | 35 to 45 h | 4 to 6 h of checks |
| Incomplete or unreadable timesheets | 8 to 15 % | Under 1 % |
| Payroll errors (back pay, overpayments) | 1 to 3 % of gross pay | 0.2 to 0.5 % |
| Delay from week end to client invoice | 5 to 10 days | 1 to 2 days |
| Client billing disputes | 3 to 6 % of invoices | Under 1 % |
| Pay advances requested by temps | Handled by phone | Calculated on approved hours |
| Days sales outstanding (DSO) | 55 to 70 days | 40 to 50 days |
The DSO gain matters as much as payroll: invoicing 5 days earlier on EUR 300,000 of weekly revenue frees more than EUR 200,000 of cash.
Full staffing software or custom portal: the 2026 comparison
| Criterion | Off-the-shelf staffing software | Custom portal connected to your payroll |
|---|---|---|
| Scope | Assignments, compliance filings, payroll, invoicing, timesheets | Timesheets, client approval, payroll and invoicing export |
| Upfront cost | EUR 10,000 to 30,000 migration and training | EUR 25,000 to 50,000 |
| Recurring cost | EUR 1,000 to 4,000 a month | EUR 4,000 to 8,000 a year |
| 5-year cost | EUR 70,000 to 270,000 | EUR 45,000 to 90,000 |
| Timeline | 4 to 9 months, payroll migration included | 3 months |
| Project risk | High: switching payroll mid-year | Low: current payroll stays in place |
| Mobile timesheets for supervisors | Depends on vendor | Designed for your clients, one-click sign-off |
| Premium rules per client | Standard settings | Your agreements: nights, Sundays, allowances, bonuses |
For most independent agencies, the custom portal is the most profitable project. A full software switch mainly makes sense at the end of a vendor contract or when growing beyond 2,000 temps.
What the portal includes
| Module | Content | Indicative 2026 budget |
|---|---|---|
| Client area | Temps on assignment, hours entry or approval | EUR 6,000 to 10,000 |
| Temp worker app | Hours declaration, timesheet photo, advance request | EUR 5,000 to 10,000 |
| Rules engine | Premiums, overtime, allowances, per-client agreements | EUR 5,000 to 12,000 |
| Automatic checks | Hours outside the assignment, duration limits, duplicates | EUR 3,000 to 6,000 |
| Payroll export | Pay variables file for your payroll software | EUR 3,000 to 7,000 |
| Pre-invoicing | Markup per client, supporting documents attached | EUR 3,000 to 5,000 |
Temps' personal data stays hosted in the UK, Canada or the European Union as required, with access limited to what is strictly needed under GDPR or PIPEDA.
Mini case study
Sophie, owner of an independent staffing agency in Toronto, places 600 temps a week, for annual gross pay of EUR 16.5 million. Her three payroll officers spend 40 hours a week retyping timesheets.
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- Custom portal: EUR 38,000, plus EUR 6,000 a year.
- Unrecovered payroll errors estimated at 1 % of gross pay, EUR 165,000 a year. Target: cut that by two thirds, saving EUR 110,000.
- Entry time: from 40 to 5 hours a week, 1,750 hours a year redirected to recruiting.
The project pays back in about 4 months, without touching the existing payroll software.
FAQ
Do we need to change payroll software to digitise timesheets?
No, the portal exports a pay variables file most payroll packages can read. You avoid a 4 to 9-month migration and the risk of interrupted payroll.
Will clients agree to approve hours online?
Yes if approval takes under a minute per week per team. Agencies typically see 70 to 90 % of timesheets approved online from month two.
How long does it take to launch the portal?
Allow 3 months: 3 weeks scoping premium rules, 7 weeks of development and 2 weeks of pilot with 2 or 3 clients.
Does the portal handle pay advances for temps?
Yes, the advance is calculated on hours already approved, with a configurable cap, for example 50 % of estimated net pay. This cuts calls to the agency by 30 to 50 %.
What happens during a tax audit or a dispute?
Each timesheet keeps the time stamp, the approver and every change. You find proof of hours paid and invoiced within seconds.
Let's scope your project. Tell us your number of temps, your payroll software and your main clients: we will price a timesheet portal between EUR 25,000 and 50,000, delivered in 3 months. 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.
