Sham self-employment means you invoice as a self-employed person, but after the compensation fund's review, you're effectively treated as an employee. If your status is revoked retroactively, you're treated as employed for up to five years. Your contribution share alone comes to around CHF 4,240.00 per year, based on an income of CHF 80,000.00. Over five years, that's CHF 21,200.00, plus interest. This scenario hits Swiss freelancers every year – usually without any warning at all.

Most guides on "sham self-employment in Switzerland" are written for the other side: for HR managers who don't want to risk back payments from the compensation fund. That's sensible, but only half as useful for you as a freelancer. This guide flips the perspective and answers the questions you're actually asking: Am I at risk? How does the compensation fund spot sham self-employment? And which steps can I take to secure my status before things heat up?

The good news up front: sham self-employment isn't fate. It's the result of facts, and you shape a large share of those facts yourself – through your client acquisition, your contracts, your equipment, and your invoicing. The checklist with seven concrete steps further down shows exactly what to do.

The Key Takeaways

• The label on the contract doesn't count. Whether it says "work contract," "consulting agreement," or "freelancer agreement" is irrelevant to the compensation fund. What gets reviewed is the actual situation.
• No client above 50 percent. More than half of your income from a single hand is the biggest single-point risk. Three or more active clients is the recommended benchmark.
• Reclassification is expensive. Contributions of around 10.6% (employee and employer share combined), retroactively for up to five years. On an income of CHF 80,000.00, your share alone is around CHF 4,240.00 per year, or CHF 21,200.00 over five years, plus interest.
• The status ruling is your free insurance. It costs CHF 0.00, it's binding, and it protects you going forward. You just have to apply for it.

What Is Sham Self-Employment – and Why the Label on Your Contract Is Worth Nothing

"Sham self-employment" doesn't appear in any Swiss law. The Swiss Federal Act on Old-Age and Survivors' Insurance (AHVG) recognizes only two categories of insured persons under Art. 2: self-employed and employed. "Sham self-employment" is the colloquial description of a finding the compensation fund makes: someone performs their work economically like an employee but invoices like a self-employed person.

Why is the distinction so sharp? Because the two categories trigger completely different contribution and reporting obligations. With employment, the employer owes half the contributions and handles the entire administrative apparatus: payroll, salary reporting, vacation and holiday compensation, maternity and service contributions. With genuine self-employment, you carry everything yourself – but in exchange you get entrepreneurial freedom, your own deductions, and usually lower net contributions. Anyone who wants to enjoy the benefits of self-employment without the matching obligations is gaming the system. That's exactly why the compensation fund reviews so carefully.

And now the point many freelancers get wrong: the label on the contract carries no evidentiary weight whatsoever. You and your client can print the word "work contract" on the documents as many times as you like – the compensation fund isn't bound by it. It assesses the actual circumstances of the collaboration, not their paper form. What counts is the overall picture of the criteria, as developed by the case law of the Swiss Federal Supreme Court, in particular the landmark ruling BGE 135 V 287. A contract that realistically describes self-employed work can make the review easier. But it can never replace it.

By the way, both sides carry the risk. Your client risks back payments for the employer share plus default interest – which is why larger companies avoid sham freelancers like the plague. You risk losing your status with all its financial and tax consequences. Anyone who understands the test criteria protects themselves and their clients at the same time.

Sham Self-Employment in Switzerland: The Compensation Fund's Test Criteria in Detail

When the compensation fund – in most cantons the SVA (compensation fund office) – clarifies your status, it doesn't run a yes/no check against a single criterion. It makes an overall assessment and asks: how does the collaboration actually work? The table below shows the eight core criteria the compensation fund uses to spot sham self-employment or confirm genuine self-employment.

No single criterion decides on its own. Billing by the hour doesn't automatically make you sham self-employed – hourly fees are common and permitted in consulting. Conversely, a project flat fee won't save anyone who is otherwise integrated like an employee. What matters is the overall picture: the more items from the right-hand column apply to you, the higher your risk.

A realistic picture of yourself helps more than any gut diagnosis. Go through the table and honestly mark which column you fall into with your most important client. Two to three hits on the right are a warning sign you should take seriously. Four or more hits mean action is needed – now, not someday.

The 50% Problem: When One Client Is Everything

The best-known – and most dangerous – single signal is economic dependence on one client. The Swiss Federal Government's SME portal puts it unambiguously: if a person earns more than half their income from a single client relationship, that's a strong indication of an employment relationship. The rule of thumb: three or more clients, so your self-employment is convincing.

That makes sense when you read it economically. Anyone who does 80 or 90 percent of their revenue with one company is objectively behaving like its employee: lose the contract, lose your livelihood. That dependence is exactly the core of what social insurance means by "employed."

An example from consulting practice, anonymized: Sandra, 34, a graphic designer from Bern. Six years self-employed, revenue around CHF 96,000.00 a year – of which about CHF 77,000.00, roughly 80 percent, came from a single scientific publisher. Sandra worked two fixed days a week in their office, used their Adobe licenses, regularly collaborated with the editorial team, and billed her hours in a lump sum each month. To everyone involved, it felt like a completely normal freelancer arrangement.

Then the compensation fund audited the publisher as part of a payroll inspection. The result: the collaboration with Sandra was retroactively qualified as an employment relationship. The publisher received back payments for the employer share over five years, interest included. Sandra received a bill for around CHF 21,000.00: difference contributions, unemployment insurance (ALV) and family allowance fund (FAK) shares she had never paid as a self-employed person, plus default interest. Contributions she had already paid as a self-employed person were partially credited – but the back payment was still so high that she had to take out a loan. And the collaboration with the publisher ended on its own after that.

Sandra's hard lesson boils down to one number: monitor your client mix. Calculate every quarter what percentage of your revenue comes from which client. A simple table will do; a client management tool with revenue shares per client does it automatically. If one client is above 50 percent, the problem doesn't start with the compensation fund – it starts with you: diversify actively before some external event triggers a review.

What Happens if You're Reclassified: Contributions, Interest, a Lost Status

Let's imagine the worst case concretely. After an audit, a bankruptcy, or a tip-off, the compensation fund concludes that a particular working relationship made you an employed person. What happens then?

First: contributions get recalculated – retroactively for up to five years. As an employed person, AHV, IV, EO, ALV, and FAK together come to around 10.6 percent, split evenly between you and your client. On an annual income of CHF 80,000.00, your share is around CHF 4,240.00. Over the maximum back-payment period of five years, that adds up to around CHF 21,200.00 – plus default interest. The legal framework is in the AHVG on admin.ch; the concrete assessment is done by your cantonal compensation fund. AHV contributions you already paid as a self-employed person are credited – but you never paid ALV or FAK contributions as a self-employed person, and interest is never waived.

Second: your client pays too – and the relationship suffers. The employer share is charged to your client, also retroactively, also with interest. Large companies react to this badly; it's not uncommon for the collaboration to end after such a back payment, as with Sandra. Your best status protection is therefore also protection for your client relationships.

Third: you lose more than money. Along with your self-employed status, the business expense deductions for the affected years disappear: if you're reclassified as employed, you can no longer deduct your laptop, software, home office, and training the way you used to, which drives up your tax bill. The work can no longer continue as self-employment until the circumstances are adjusted; under certain circumstances, your value-added tax (VAT) registration also gets reassessed. And anyone who risks contribution gaps in their pension account is saving at the wrong end.

If a looming reclassification can't be avoided, there's an orderly way out: instead of continuing to work on your own account, you can convert the relationship into employment or bill through a third party. Our article on payrolling for freelancers explains how that works.

Applying for a Status Ruling – Your Free Insurance

There's exactly one instrument that gives you legal certainty for the future and costs nothing: the status ruling. You apply to the compensation fund where you're insured for a binding decision on whether your work is self-employed or employed. The result applies to the working relationship assessed – and prevents the same question from suddenly being answered differently years later. The competent authority is your canton's compensation fund; forms and application help are bundled on ahv.ch.

Here's how to proceed:

1. Get the "status ruling" form. On your cantonal compensation fund's website (SVA Zurich, Compensation Fund Bern, and so on), the application is called a "ruling on whether the activity is employed or self-employed." Often fillable directly online.
2. Put your documents together. What matters are the contracts with all your current clients – not just the biggest one – copies of your invoices, evidence of your market presence (website, portfolio, proposals), and your bookkeeping or income-expenses statement.
3. Submit the application openly and completely. Disclose all your clients. Anyone who hides a main client gets a ruling based on incomplete grounds – and that's worth nothing.
4. Wait for the ruling. The review takes four to twelve weeks depending on the canton. The result is written, binding, and authoritative for contributions on both sides.

The status ruling costs you nothing – CHF 0.00, not even a decision fee. The only thing it demands is honesty about your actual circumstances. If those change significantly later (a new main client, a different type of work), apply for a new ruling.

A positive example: Markus, 41, an IT consultant from Zurich. Four clients, his own laptop, his own certifications and licenses, billing by project packages with fixed deliverables, his own website with references. His biggest client made up 45 percent of his revenue – borderline territory. Markus submitted all four contracts along with his application, a dozen proposals including rejections as proof of his client acquisition, and his annual accounts. After seven weeks, the written ruling arrived: self-employment, confirmed. We've put together the AHV basics for the self-employed in our AHV guide.

Markus's recipe isn't luck, it's copyable: document many clients, document your own infrastructure, document your client acquisition. The documents that carry a status ruling are the same ones you should be keeping anyway.

Seven Concrete Steps That Strengthen Your Status

You can't eliminate every review risk – but you can shape your profile so the overall assessment clearly lands in favor of self-employment. These seven steps are sorted by impact, not by effort.

1. Diversify your clients – the strongest lever of all. No client above 50 percent of revenue, ideally none above 40. A concrete example: Elena, 29, a hairdresser from Lucerne. She quit her job and worked self-employed from day 1 – exclusively for her former employer, at the same chair, with their regular customers, during the usual opening hours. The classic among risk constellations: same work, same place, same client. Elena restructured it: she cut the old salon to two days a week, rented her own chair in a second studio, and built up a private clientele through Instagram. After a year, she served five client groups, none above 40 percent of revenue. Anyone who works self-employed alongside a job is subject to the same test criteria – details in our guide on dual employment in Switzerland.

2. Build your own market presence. Website, portfolio page, LinkedIn or Instagram profile, business cards. This costs a few hundred francs a year and is the most visible sign of entrepreneurship: you're actively competing for work instead of just receiving it through one channel.

3. Use your own equipment. Work with your own laptop, your own licenses, and your own software – not routinely with the client's equipment. Yes, that costs you money. But it's also evidence of your own entrepreneurial risk and your own infrastructure, two core criteria of the review.

4. Work contract elements instead of employment contract copies. Frame your assignments as work for a defined result: a defined outcome, a delivery date, no detailed instructions, no fixed working hours, no vacation compensation, no employee expenses. Say goodbye to clauses that sound like an employment contract – things like probation periods, time tracking, or guaranteed pay.

5. Bill by result instead of by the hour. Project flat fees and work packages look more entrepreneurial than a monthly timesheet. If hours are necessary, combine them with a clearly defined deliverable. With clean invoicing software, flat-fee and project invoices are just as fast to create as timesheets.

6. Document your client acquisition. Keep your proposals on file – including the rejected ones. They're the best proof that you're running a business that competes in the market for work. A folder with twelve proposals convinces any compensation fund more than any self-declaration, however nice.

7. Keep clean business books. Track income and expenses in a structured way, visible per client. You need this for your tax return, for the status ruling, and for your own early-warning indicator: revenue share per client. Anyone who knows their numbers spots the 50% problem before the compensation fund does. And anyone who runs a proper sole proprietorship instead of working informally has the documents ready anyway – the same principles apply, by the way, if you're starting out self-employed on the side.

Bottom line: sham self-employment deserves respect – not panic. The compensation fund's test criteria are known, the risk factors are measurable, and a free status ruling gives you written protection. The ten minutes you need to check your client mix are the best ten minutes of your quarter – and the seven steps above are all things you should be doing as a self-employed person anyway.

If you want to underpin your self-employment, start with the basics: professional invoices in your own name, clean client management, and numbers that show your client mix at any time. That's exactly why we built Magic Heidi: from the free plan up to CHF 39.00 per month, noticeably cheaper than bexio at CHF 52.00 – try Magic Heidi for free, no credit card, ready in two minutes.