Why French payroll is a category of its own

Running payroll in France is anything but trivial. Three layers of complexity stack up and seriously filter the choice of software — to the point where no foreign solution has truly succeeded on this market without fully adapting to it.

DSN (Déclaration Sociale Nominative). The unified electronic exchange standard with all social bodies (URSSAF, pension, providence, mutual, France Travail) since 2017. Any serious French payroll solution must produce a monthly DSN and event-based DSNs (sick leave, contract end) flawlessly. Without automated, reliable DSN, you multiply tenfold the risk of URSSAF reassessment.

Collective bargaining agreements (CCN). France has roughly 700 active agreements, each with their own seniority rules, premiums, allowances, leave, classifications. A company can be covered by multiple CCNs simultaneously if it operates in several industries. A payroll software that doesn’t finely configure CCNs ends up running on parallel Excel files — and producing wrong payslips.

Withholding tax (PAS). Since 2019, the employer calculates and remits income tax monthly, using personalized rates transmitted by DGFiP. Beyond TOPAze returns and adjustments, it has become standard — but any payroll software that misses a PAS rate triggers an adjustment for every employee concerned.

Five vendors stand out in 2026, each positioned on a distinct segment and philosophy: Silae for complex payroll via accountants, PayFit for modern SMEs, Sage for SMEs already in the Sage ecosystem, Cegid for mid-market with real HRIS ambition, and ADP for large enterprises and multinationals. This article walks through both — and how to choose.

The 6 non-negotiable criteria for a French payroll product

Before comparing vendors, you need a shared rubric. Here is what we systematically evaluate:

1. End-to-end DSN automation. Generation, validation, TOPAze returns, and event-based DSN management without manual intervention.
2. Exhaustive CCN coverage. Not only the 10 most common: if you’re in metallurgy, hospitality, construction, or umbrella employment, the engine must handle all your industry-specific rules.
3. Withholding tax (PAS). PAS rates retrieved and applied automatically, adjustment cases handled, clean communication to employees on payslips.
4. Multi-establishment / multi-company. If you have multiple sites, multiple NAF codes, multiple SIRETs — the software must handle this without duplicating HR data.
5. Hosting and GDPR compliance. France or EU hosting guaranteed contractually, GDPR rights management process tooled, complete audit trail.
6. Modern integrations. Open APIs to plug in an HRIS, accounting, or time-tracking tool. In 2026, no more “manual CSV extracts by email”.

Silae — the accountant-driven engine

Pitch in one line. The reference tool for complex payroll, distributed almost exclusively via accounting firms and partner publishers. If your firm offers outsourced payroll in France, it’s probably Silae running underneath. Profile: DSN Phase 3, ~50,000 client companies, 15+ years in production.

What sets it apart

• Unmatched CCN coverage. Silae’s configuration covers nearly all active agreements, with business rules that pass URSSAF audits.
• Functional depth. Retroactive adjustments, variable salaries, complex bonuses (seniority, performance, CCN allowances), part-time work, multi-contracts: all modeled.
• Distribution model. Not sold direct to companies. You access it via your accountant, who handles production and exposes a client interface.
• DSN robustness. Years of real production across tens of thousands of companies — bugs are rare and fixes fast.

Best fit

Companies that outsource payroll to an accountant and have strong industry specificities: industries subject to CCNs, construction, hospitality, transport, umbrella employment. Sweet spot: 10 to 500 employees with delegated payroll.

Worth knowing

Employee UX is more austere than cloud-natives. The “2010s ERP interface” feel is assumed, because Silae is first and foremost a calculation engine, not an employer brand tool.

PayFit — next-generation cloud payroll

Pitch in one line. The “made in France” cloud payroll that aims to do for payroll what Slack did for messaging: modern UX, native employee self-service, strong automation, and onboarding in hours instead of weeks. Profile: DSN Phase 3, ~15,000 client companies, +450M€ raised.

What sets it apart

• Native employee UX. Personal portal, leave requests, expense reports, digital payslips — no plugin, no overlay.
• Standard case automation. Hiring, departure, sick leave, raise: guided workflows that produce the right documents and the right DSN.
• Multi-country. France, Spain, UK, Germany, Italy — useful for scale-ups expanding in Europe.
• Fast onboarding. A few hours to a few days for SME go-live, versus weeks for traditional solutions.
• Open APIs. Native connectors with modern HRIS (including Illizeo, Lucca, BambooHR) — no double entry.

Best fit

Modern SMEs (5 to 200 employees), particularly tech, services, and retail scale-ups, who want to manage payroll in-house or with lightweight support. PayFit works very well when convention complexity is limited.

Worth knowing

On very specific CCNs (construction, metallurgy, multi-industry conventions), PayFit is improving but remains less exhaustive than Silae. Test with your real cases during the demo.

Sage — the integrated SME standard

Pitch in one line. The French SME standard, particularly widespread among small businesses already using Sage Accounting or Sage Commercial Management. Native payroll ↔ accounting integration removes a structural friction point. Profile: DSN Phase 3, 600,000+ client companies worldwide, 30+ years.

What sets it apart

• Native Sage Accounting integration. Accounting entries automatically transferred to Sage 100 or Sage Business Cloud.
• Two delivery models. Sage 100 Paie (legacy on-premise) for those who want to keep data in-house. Sage Business Cloud Payroll for new customers.
• Integrator network. Very dense in France, making local support easier.
• Compliance. DSN, PAS, main CCNs — solid without being revolutionary.

Best fit

Companies from 5 to 200 employees already running Sage accounting or commercial management, or who want a coherent single-vendor stack. Particularly well-suited to accounting firms equipping their clients.

Cegid — the mid-market and enterprise suite

Pitch in one line. The Lyon-based publisher covering mid-market to large enterprises with a complete HR suite: payroll + time tracking + talent + reporting. For organizations that want one vendor across the entire HR chain. Profile: Cegid PeopleNet + Cegid HR Ultimate, mid-market to large enterprise.

What sets it apart

• Complete HR suite. Payroll + time tracking + talent + analytics in the same tenant, not best-of-breed connected.
• Cegid HR Ultimate. The modern cloud version for 250 to 5,000 employees, reshuffling the deck against legacy solutions.
• Configuration depth. Multi-establishment, multi-convention, multi-tenant finely managed.
• Current investment. Cegid has invested heavily in R&D since its acquisition by KKR + Silver Lake — modernization is underway.

Best fit

Mid-market companies (250 to 5,000 employees) with a structured HR function, multiple sites, and consolidated reporting needs. Often chosen when the company outgrows PayFit but stays too small for ADP.

ADP — the global player for multinationals

Pitch in one line. The world’s payroll outsourcing leader, present in France with offerings adapted to companies needing to unify payroll across dozens of countries under a single vendor and single point of contact. Profile: ADP Decidium + Streamline + GlobalView, 140+ countries.

What sets it apart

• Multi-country coverage. 140+ countries, centralized management of international payroll with a single interlocutor.
• Operational maturity. Decades of execution on millions of payslips per month — robustness is no longer in question.
• Adapted lineup. Decidium for the FR mid-market, Streamline for multi-country up to 1,000 employees, GlobalView for large enterprises.
• Managed service. Option to fully outsource production (BPO) — useful for organizations who want to offload.

Best fit

Large enterprises and multinationals (1,000+ employees) with multi-country presence. ADP is rarely the right choice for a local French SME: oversized, expensive, and employee payroll UX is not its strength.

Side-by-side comparison

Synthetic overview on 8 criteria that matter most in customer evaluation.

4-question decision matrix

Rather than comparing five vendors in parallel, ask yourself four questions in this order. Each answer eliminates 3 or 4 candidates and leaves you with the right one or two choices.

1. Do you outsource payroll to an accounting firm? If yes, you’ll likely land on Silae without even choosing — it’s what most firms use. Explicitly ask which tool they use at the start of the engagement.
2. Do you have fewer than 200 employees and want to run payroll in-house? If yes, PayFit is the default for tech/services modern profiles; Sage Business Cloud Payroll for more traditional profiles or those already running Sage accounting.
3. Do you have between 250 and 5,000 employees and multiple sites? If yes, look seriously at Cegid HR Ultimate (the modern bet) or Sage’s mid-market options. Avoid ADP if you don’t have multi-country needs.
4. Do you operate in multiple countries needing consolidation? If yes, ADP is the default. Cegid plays in the same league on certain perimeters, but ADP has the multi-country depth.

Our integrator experience: most French SMEs run on Silae (via firm) or PayFit (in-house). Above 300 employees, the battle is between Cegid and Sage 100; above 1,000 employees with multi-country needs, ADP becomes competitive again.

Where Illizeo fits in: the HR layer on top of your payroll

Illizeo is not a payroll product — and that’s deliberate. Our job is the HR layer that plugs in above payroll via API, producing the input variables that payroll needs to compute correctly. A modular platform covering the full employee lifecycle, from recruitment to offboarding.

The Illizeo offering in 15 modules

Available modules Modules coming in 2026

In practice: we never ask you to choose between Illizeo and your payroll software. We complement what you already have. If you’re on Silae via an accountant, Illizeo handles onboarding and variables that your firm then retrieves. If you’re on PayFit, Illizeo adds advanced attendance and global expense reports. Same for Sage, Cegid, ADP.

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