The decision between hiring a full-time controller and engaging a part-time or fractional resource is, at its core, a straightforward cost-benefit question. But it is one that most Swiss SMEs approach without the actual numbers, which means the decision often comes down to instinct, habit, or whatever the CEO has seen work elsewhere.

This article puts the numbers on the table and provides a framework for the decision that accounts for the real costs of each option and the point at which the calculation switches.

The True Cost of a Full-Time Controller in Switzerland

The salary of a full-time controller in Switzerland varies by experience, location, and industry. For a commercially oriented controller with five to ten years of experience in a Swiss SME context, the base salary range is approximately CHF 90,000 to CHF 130,000 per year in the Zurich and Basel regions, somewhat lower in other regions.

But salary is not the full cost. The fully loaded cost of a Swiss employee includes a set of mandatory social charges that add approximately 20 to 22 percent to the base salary.

The main components:

AHV/IV/EO (Old age, disability, and loss of earnings insurance): The employer’s share is approximately 5.3 percent of gross salary.

ALV (Unemployment insurance): The employer’s share is 1.1 percent of gross salary up to the coordination amount.

BVG (Occupational pension): The employer’s contribution depends on the pension plan chosen and the employee’s age. For a typical mid-career employee, the employer’s BVG contribution is commonly between 5 and 9 percent of the coordinated salary. Some employers contribute more than the BVG minimum as part of their employment value proposition.

SUVA/UVG (Accident insurance, occupational): Approximately 0.8 to 1.5 percent of salary depending on the risk category.

KTG (Illness daily allowance insurance): The employer typically contributes roughly half the premium, commonly 0.5 to 1.5 percent of salary.

Overhead: Desk space, IT equipment, HR administration, onboarding, and training. Typically estimated at CHF 10,000 to CHF 20,000 per year for an office-based role.

Recruitment cost: A controller hire through a recruitment agency typically costs 15 to 20 percent of the annual base salary. For a CHF 110,000 base salary hire, that is CHF 16,500 to CHF 22,000, amortised over the employment period. Assuming a three-year average tenure, this adds CHF 5,500 to CHF 7,500 per year.

Putting this together for a mid-experience controller at CHF 110,000 base salary:

Base salary: CHF 110,000 AHV/IV/EO employer share: ~CHF 5,830 ALV: ~CHF 1,210 BVG (employer): ~CHF 7,700 (mid-range estimate) SUVA/KTG: ~CHF 1,650 Overhead: CHF 15,000 Recruitment amortised: CHF 6,500

Total fully loaded annual cost: approximately CHF 147,890

For a senior controller at CHF 130,000 base, the fully loaded cost approaches CHF 175,000. For a more junior profile at CHF 90,000, it is approximately CHF 120,000.

The Cost of a Part-Time or Fractional Engagement

A fractional controller or CFO engagement is typically structured as a fixed number of days per month at a daily rate. For a commercially experienced Swiss controller or fractional CFO, the market daily rate in the Zurich region ranges from CHF 1,200 to CHF 2,200 per day depending on seniority, specialisation, and engagement scope.

The cost structure is simple: days per month multiplied by daily rate, with no social charges, no overhead, no recruitment cost, no notice period, and no severance obligation.

Example calculations:

8 days per month at CHF 1,500/day: CHF 12,000/month = CHF 144,000/year 6 days per month at CHF 1,500/day: CHF 9,000/month = CHF 108,000/year 4 days per month at CHF 1,800/day: CHF 7,200/month = CHF 86,400/year

These figures are gross fees to the service provider, with no additional employer cost. The comparison to a full-time hire is direct.

When the Math Favours Each Option

The crossover point depends on how many days per month of controller work the business actually needs, and what it is willing to pay for that work.

For a business that genuinely needs 15 to 20 days per month of controller work - a typical full-time controller load - a full-time hire at CHF 147,000 total cost compares favourably to a fractional engagement at 15 days per month at CHF 1,500/day (CHF 270,000/year). At this volume of work, the full-time hire is substantially cheaper on a per-day basis.

But how many businesses in the CHF 3M to CHF 15M revenue range actually need 15 to 20 days per month of controller work? In most cases, the monthly management reporting cycle, budget maintenance, and analytical support is 6 to 10 days per month of substantive controller work, with the remainder of a full-time role filled with lower-value processing tasks that could be done by a more junior resource or that are simply not needed.

For the business that needs 6 to 8 days per month of genuine controller work, the calculation is:

Full-time hire fully loaded: CHF 147,000/year for 20 days/month = CHF 613/day effective cost, but 12 to 14 days per month of underutilised capacity.

Fractional engagement at 8 days/month at CHF 1,500/day: CHF 144,000/year for exactly the work needed, no underutilisation, no social obligations, no recruitment cost, and typically a more senior profile than a CHF 90,000 to CHF 100,000 full-time hire would provide.

What You Get Differently

Cost is only half the comparison. The other half is what each option provides.

A full-time controller is embedded in the organisation. They attend all management meetings, build relationships with department heads over time, develop deep knowledge of the business, and are available for ad hoc queries throughout the working week. For businesses where the finance function needs to be closely integrated into operations and where the daily touchpoints matter, full-time presence has genuine value that a part-time engagement cannot fully replicate.

A fractional engagement provides a more senior profile at equivalent cost, no HR overhead, and the ability to flex the engagement up or down as needs change. The fractional controller typically brings broad cross-sector experience and a fresh perspective that an embedded employee, close to the business, may not. For businesses that need strategic finance thinking alongside the management reporting work, fractional senior resource is often more valuable than a less experienced full-time hire.

The Decision Framework

Three questions determine which option is right:

How many days per month of controller work does the business genuinely need? Estimate this honestly based on the close process, reporting requirements, and analytical demand. If the answer is below 10 days, fractional is almost always more cost-effective.

Is daily presence and deep operational integration important? If the CEO needs a finance person in the building every day, the fractional model will not satisfy that need regardless of cost.

What is the seniority and profile required? If the business needs CFO-level strategic thinking alongside the controller work, a fractional CFO engagement typically provides a more senior profile than a full-time hire at equivalent budget.

For most Swiss SMEs below CHF 20M revenue, the honest answers to these three questions point to fractional as the more cost-effective and more capable solution. Above CHF 20M to CHF 30M, with a growing team and daily management accounting demands, the full-time hire becomes the more practical choice.

Considering a fractional controller or CFO? Book a free 30-minute call to discuss what makes sense for your business.

Alessandro Ratzenberger is a fractional CFO and business controller based in Zurich, with 15 years of operational finance experience at Dufry Group and Bomi (UPS Group).