Payroll software for small business 2026: tool or provider?

Quick answer. For a small business, the choice comes down to two models: running payroll in-house on software (PayFit, Sage, Lucca…) or delegating it to an accounting firm (often through Silae, the dominant tool among French accountants). The switchover threshold sits in practice around 10 to 20 employees: below it, delegation is often simpler and safer; above it, software becomes more economical. Whatever the choice, the employer remains legally responsible for payroll and the DSN.

Payroll is not a simple calculation. It engages the employer's liability on contributions, withholding tax, the DSN (mandatory under article L133-5-3 of the French Social Security Code) and compliance with the collective agreement. An error repeats every month and adds up quickly in case of an audit.

For a small business making its first hire, the question is therefore not only "which software?" but "which organisational model?". Doing it yourself on a tool, or entrusting the work to a firm: both routes are legitimate, but they suit different company profiles.

The market sets two logics against each other. On one side, in-house software, designed so that the director or an HR assistant produces the payslips themselves. On the other, delegation to an accountant, who runs payroll on the company's behalf. This distinction largely overlaps the in-house versus outsourced payroll debate.

The often-overlooked common point: in both cases, the employer remains the legal issuer of payroll. Delegating transfers the execution, not the final responsibility.

Several solutions structure the French market in 2026. The figures below are orders of magnitude drawn from published offers: the real price depends on volume and options and is often the subject of a quote.

One point is worth clarifying: Silae is distributed almost exclusively through accounting firms. A small business generally does not buy Silae directly; its accountant uses it and charges for the service. For a more detailed comparison of in-house tools, see our analysis of Lucca, PayFit and Silae.

The cost is not just the subscription price: you have to think in full cost per payslip, including the internal time spent on payroll.

The switchover threshold sits in practice around 10 to 20 employees. Below 10 employees, internal time and risk often make delegation preferable. Above 20, in-house software generally becomes more economical, provided you have a payroll skill in-house. These orders of magnitude are indicative and should be confirmed by a quote tailored to your collective agreement.

1. Compliance and legal updates: does the software automatically integrate changes in rates, ceilings and scales?
2. Collective-agreement coverage: is your industry agreement handled natively, with its specifics?
3. Integrated DSN: does the tool generate and transmit the DSN, including event-based reports?
4. Support: do you have assistance in case of a regulatory doubt?
5. Total cost of ownership: subscription + internal time + training, not just the headline price.
6. Reversibility: can you export your data and switch solutions without losing everything?
7. Data security: hosting, GDPR compliance, backups.

• Sole director treated as an employee (SAS president): one payslip a month; delegation to a firm is often the simplest and least risky solution.
• Complex collective agreement (hospitality, construction, transport): favour a solution covering the agreement natively, or delegate to a specialist firm.
• Rapid growth: anticipate crossing the switchover threshold to avoid changing tools in a hurry.
• Seasonality: variable headcounts argue for a solution flexible in cost per payslip.

• Compliance is never 100% delegated. Even with an "up-to-date" tool, the employer must check the settings: AT-MP rate, collective agreement, exemptions.
• The hidden cost of internal time. A cheap subscription can cost dearly in entry and correction hours.
• Reversibility. A tool whose data cannot be cleanly exported creates dependency; check the exit terms before committing.
• The DSN and reports. Whatever the solution, the monthly DSN and event reports must be produced on time; this is a selection criterion in its own right.

A retail business with three employees recently signed up for in-house payroll software to "save money". After six months, the director was spending half a day a month on payslips, had made two ceiling errors and had failed to issue an end-of-contract report. The real cost — time, stress, risk — far exceeded that of delegation. We took over payroll; the director got their time back.

Our conviction is pragmatic: below about ten employees, delegation almost always offers a more favourable balance between safety and cost than in-house tooling, especially if the collective agreement has particularities. In-house software comes into its own when the company has built a payroll skill and reached sufficient volume. The choice of payroll tool also connects to the broader thinking on consistent tooling for a small business and on the value of specialist support. As an expert-comptable registered with the Ordre and a statutory auditor, we run delegated payroll for many Paris-based small businesses and advise directors on tool selection.

Hayot Expertise tip. Before choosing, calculate your full cost per payslip in both scenarios (subscription + internal time on one side, fees on the other) and weigh it against your risk tolerance. Below 10 employees, assume delegation is the benchmark, and switch to in-house only if you have a genuine payroll skill on board. Whatever the model, require a solution that natively covers your collective agreement and the event-based DSN.