Staffing agency software cost: timesheets, payroll and billing in 2026

The verdict in three sentences

For an independent staffing agency, the weekly close is the bottleneck: paper timesheets, re-keying, payroll errors and client invoices sent three days late. A custom module for online-approved timesheets, connected to your payroll and billing software, costs, as a 2026 order of magnitude, 30,000 to 55,000 EUR excl. VAT. The gain fits in three numbers: a 4-hour close, near-zero payroll errors and faster client collections.

Where time and margin are lost

Every Friday, 350 timesheets arrive by photo, fax or email, sometimes incomplete, sometimes signed by the wrong supervisor. Two assistants spend Monday and Tuesday re-keying them, calling clients to approve overtime and correcting night or Sunday premiums. Every error turns into a payroll correction, a disputed invoice or an unhappy worker who leaves for a competitor.

2026 price by component

Off-the-shelf temporary staffing software often covers contracts and French social declarations (DSN), but its timesheet module is rigid or billed per active worker. Custom software sits between clients, workers and the existing payroll tool.

Recurring costs: hosting (150 to 350 EUR excl. VAT per month), maintenance and regulatory updates (500 to 1,000 EUR excl. VAT per month), reminder SMS (0.05 to 0.07 EUR per message). Compare with SaaS tools billed 3 to 6 EUR per active worker per month, i.e. 1,050 to 2,100 EUR excl. VAT monthly for 350 workers.

Regulatory points to build in

The timesheet is the basis for payroll and billing, so it must be reliable and enforceable. The module stores the client's timestamped approval, the approver's identity and the change history. It applies the temporary work collective agreement and the client company's own rules, since French law requires temporary workers to be paid the same as a permanent employee in an equivalent role. It also calculates the end-of-assignment allowance (10%) and the paid leave allowance (10%) before the payroll export, which prevents most corrections.

Mini case study

Sophie runs an independent staffing agency in Nantes, specialising in logistics and manufacturing, with 350 workers on assignment each week. The close takes two assistants 2 days, i.e. 32 hours a week, at a loaded cost of 32 EUR per hour: about 1,020 EUR per week, 48,000 EUR per year.

After a module costing 42,000 EUR excl. VAT, the close drops to 4 hours, freeing 28 hours a week, about 43,000 EUR per year redeployed to recruiting and client relations. The payroll error rate falls from 4% to 0.4%, and invoices go out at D+1 instead of D+4: on weekly revenue of 210,000 EUR excl. VAT, three days gained noticeably improves cash flow. With 15,000 EUR excl. VAT of annual costs, the project pays back in about 18 months on saved hours alone, much faster once cash flow and retention are included.

FAQ

Do we need to replace our staffing payroll software?

No, the module produces an export file in the format your payroll tool expects. The connector accounts for 6,000 to 11,000 EUR excl. VAT of the budget.

Will clients agree to approve online?

In 2026, more than 85% of site managers approve from their phone when the SMS reminder arrives late on Friday. Tacit approval after 48 hours can be written into the contract.

What about workers without a smartphone?

The team leader or the client can enter hours on their behalf. In practice, fewer than 5% of workers are affected.

How long until go-live?

Allow 10 to 12 weeks, with a pilot on 3 clients and 50 workers during the last 2 weeks.

Does the module handle several branches?

Yes, the multi-branch structure is built in from the start, with rights per branch and consolidated reporting for management.

Let's scope your project. Tell us your worker volume, your payroll software and your main clients: we will price the scope, give an indicative budget and a 10 to 12-week schedule. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.