Expertise
Payroll

Fair salaries, serene teams. Payroll and HR, in harmony with your numbers.

Self-employed social security contributions, payroll withholding tax, benefits in kind, joint committees, salary scales, indexations, NSSO (ONSS), labour flexibility: Belgian social legislation is among the densest in Europe, and it never stops changing.

Paying yourself a comfortable salary is already an achievement for a self-employed person; with a tax and social burden that can exceed 60 %, salary optimisation is vital.

For an employer — just as for a director who pays themselves — every mistake costs: in money, in legal risk, in the trust of the teams. Most companies juggle several intermediaries: an accountant on one side, a social secretariat on the other, and in between a director who has to remember to notify everyone of every change. At Catalyst HR Solutions, these worlds are not separate: your payroll and your accounting are in continuous dialogue, under one roof. The result is automatic consistency between your payslips and your accounts — and a peace of mind that only a single point of contact can offer.

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A clear view of your numbers

Let us start with what concerns you directly: your own remuneration as a company director. We calculate it and integrate it into your payroll, in permanent connection with your company's accounting. The advantage is concrete. Take an example: you change your company car. In a classic set-up, you have to remember to notify your social secretariat, hope it receives the information in time and encodes it correctly, and you will probably have to chase it up and follow through — failing which your benefit in kind (BIK) on the payslip no longer matches reality, with a risk of error or adjustment.

At Catalyst, that intermediary to notify disappears: our departments work hand in hand, supported by our digital tools; the change is known to the team that manages both your figures and your payroll, your BIK is adjusted automatically, and your payslips align with your accounting without you having to worry about it. This is the peace of mind of having several services with the same point of contact: no more chain of relay, no more forgotten message, no more inconsistency between what payroll says and what accounting says.

And this logic goes well beyond the car: your personal life evolves, your remuneration must follow. A happy event — the birth of a child — entitles you to a not-insignificant tax advantage: a dependent child increases your tax-free allowance, which reduces your payroll withholding tax for the whole of the year concerned. Because your dedicated accountant knows your situation, they are aware of it and adjust your payslip accordingly — without you having to think about it. Another example: your child reaches the age for a student job and wants to give you a hand over the summer, at the practice, the office or simply with the administration of your business. With Catalyst, that is entirely possible — and handled simply and in an integrated way: student employment contract, Dimona declaration, contributions adapted to the student status. Here too: a single point of contact, a single logic, zero friction.

Then comes a major step: you grow and hire your first employees. For many self-employed people, this is a daunting milestone, and often a choice faced alone. Catalyst HR Solutions handles everything: registration as an employer, Dimona, choice and drafting of the employment contract, work rules, affiliation to mandatory insurance, calculation of the real employer cost. In short, you focus on your profession while we take care of all the details of this new step. You no longer feel alone facing a difficult decision: every piece of social advice we give you remains directly connected to your tax, financial and wealth strategy, because the teams responsible for them are the same — or talk to each other every day.

Beyond that, we advise you on the entire HR dimension of your business: remuneration policy, extra-legal benefits, cafeteria plans, bonus plans (CBA 90, warrants, …), company cars and mobility alternatives, collective and individual supplementary pensions, and compliance with your joint committee.

Our services

What we take care of

  • Director remuneration We structure and manage directors' remuneration, integrated into the company's accounting for permanent consistency between payslips and accounts.
  • Monthly payroll We provide the complete monthly management of employees' payroll and employer obligations, including social declarations.
  • First hires and growth We support you from A to Z at your first hire and throughout your development.
  • Salary packages We design optimised packages that maximise net pay at a controlled cost for the company.
  • Remuneration benchmarks We carry out comparative remuneration analyses to position your salaries against your market.
  • Sensitive moments We support hiring, end of collaborations, restructuring, post-acquisition harmonisation and day-to-day employment-law questions.
Your challenges

Reliability, compliance and efficiency

Ensuring consistency first: when payroll and accounting run separately, discrepancies set in — an outdated BIK, a benefit not passed through, a late adjustment — and it is the employer who bears the responsibility. Attracting and retaining talent next: in a tight labour market, a well-built package makes the difference, and it is not limited to gross pay. Controlling your costs: payroll is often your biggest expense item, and the legal optimisation levers are numerous but technical. Staying compliant last: between the obligations of your joint committee, developments in labour law and social inspections, there is no room for improvisation.

Our approach

Continuous, human and digital

A dedicated point of contact who knows your business and your sector and answers quickly — because in payroll matters, questions do not wait. A genuinely integrated approach above all: your payroll is designed and executed together with your taxation and your accounting, in a digital flow where information circulates without re-entry or any intermediary to chase. That is what guarantees that your payslips reflect your accounting reality in real time. And an advisory mindset: we do not merely run the payroll, we flag the opportunities and the risks we see going by — before they become problems.

Specific expertise

Expertise that understands your reality

  • Director status and remuneration
  • Remuneration policy and salary benchmarking
  • Alternative remuneration and cafeteria plans
  • Social declarations and documents
  • Payroll for medical and liberal professions
  • HR structuring for growing businesses
  • Social support for M&A transactions
  • Social-compliance audits
  • Outsourced HR director support
  • Direct employee payslip support
Client benefits

What you gain

  • Accounting-aligned payslips: Changes in car, benefits or family situation are reflected automatically, without an intermediary to notify.
  • Accuracy and punctuality: Employees are paid fairly and informed clearly.
  • Attractive packages: Salary packages become more competitive without cost drift.
  • Controlled compliance: Social compliance is documented, defensible and under control.
  • Time recovered: A single point of contact knows the file end to end while you focus on your business.
Why choose Catalyst?

An ITAA-accredited firm, close to your business

Because payroll touches social law, taxation and accounting at the same time, it is not only more efficient but above all more reliable when these areas of expertise work together. That is precisely what Catalyst HR Solutions offers: a dedicated HR and payroll team, backed by the group's tax specialists and accountants, continuously sharing the same information. From calculating your own remuneration as a director to your first hire, all the way to teams of several dozen employees, you gain what no combination of separate providers can offer: the certainty that everything is consistent, because everything is in one place.

Ready to take back control of your business?

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