Undeclared Work in Switzerland: Risks, Penalties and What You Should Do Instead
Most households that pay cash without registering think: it'll never come out. Usually they're right - until the cleaner has an accident, gets sick, or a dispute arises. Then it gets expensive fast: back-payments over five years, administrative fines and personal liability for every day of absence.
Penalties at a glance (Switzerland 2026)
Four risks, one conclusion: registering is always cheaper than any fine.
- max. CHF 10,000
Administrative fine (AHVG Art. 88)
Per violation, often multiple
- Monetary or custodial penalty
Criminal prosecution
AHVG Art. 87, AIG Art. 117
- up to 5 years retroactive
AHV back-payments
Plus 5% default interest
- up to 3× tax owed
Tax penalty (DBG Art. 175)
Plus 10-year back tax
Legal comparison: proper registration costs only ~CHF 100-200/month in social contributions - zero fines, full insurance cover.
Yes, the risk is real - just not the way most people think. Undeclared work rarely surfaces through inspections; it surfaces when something happens: an accident, illness, a dispute. Then you repay up to 5 years of contributions plus late interest and a fine of up to CHF 10'000 - and you are personally liable for the accident. The way out costs less than one cleaning per month: register.
This applies when
For private households paying a cleaner, nanny or caregiver cash-in-hand without AHV registration.
Official sources
Key Takeaways
- 1Fines up to CHF 10'000 (AHVG Art. 88) plus tax penalties and back-contributions for undeclared work in Switzerland
- 2No accident insurance coverage - you are personally liable for workplace injuries
- 3Tax back payments up to 10 years retroactively plus up to 300% penalty surcharge
- 4Voluntary registration significantly reduces penalties - don't wait to be discovered
- 5Legal employment with Clino takes under 10 minutes - for CHF 19.90/month
What counts as undeclared work in Switzerland?
Undeclared work is precisely defined by Swiss law. Under the Federal Act on Measures to Combat Undeclared Work (BGSA) (Source: BGSA) undeclared work occurs when:
- !Employment not registered: You work without registering with the relevant authority.
- !No social insurance: You do not pay into mandatory insurance schemes (OASI, DI, UI, accident insurance).
- !No taxes: You do not report income to the tax authorities.
- !False information: You deceive authorities with incomplete or false information.
- !VAT evasion: You do not issue invoices and do not pay VAT.
Particularly tricky: many households believe their cleaner is "self-employed" - but in practice, it is almost always an employment relationship. Learn more in our article about bogus self-employment for cleaners.
An often overlooked special case: even a Christmas bonus or gratuity handed over «on the side» in cash is wage - and thus undeclared work on that amount. How to pay a bonus correctly and voluntarily is explained in our article on the gratuity in the private household.
Legal consequences: fines and penalties
How undeclared work gets discovered
It does - and almost never at a convenient moment. These are the five most common ways an unregistered job comes to light.
- TriggerWork accidentWhat happens nextThe hospital and Suva ask for the accident insurance - which doesn't exist.
- TriggerWage dispute or dismissalWhat happens nextThe employee contacts the compensation office.
- TriggerA later AHV or IV claimWhat happens nextThe missing contribution years stand out and get traced back.
- TriggerDivorce or inheritanceWhat happens nextCash payments surface in bank statements and receipts.
- TriggerTax audit or anonymous reportWhat happens nextAn inspection under the BGSA is triggered.
There is only one path that never comes out: register properly.
Register properly now
Fine rates under AHVG and DBG
The Federal Act on Measures to Combat Undeclared Work (BGSA) punishes undeclared work with substantial penalties. Fines can vary considerably depending on the scope and duration:
Fine (AHVG Art. 88):
bis CHF 10'000 for simple undeclared work (Art. 88 OASIA)
Tax penalty (DBG Art. 175)
bis 3× Steuer on the evaded tax, up to 3× if intentional (DBG Art. 175)
Duration of undeclared work:
The longer the unregistered activity continues, the higher the penalties
In addition to fines, authorities can also recover social insurance contributions, including late payment interest and surcharges, which can quickly add up to CHF 10,000 to CHF 30,000.
Limitation period for back-payment
AHV contribution claims only become time-barred after five years (AHVG Art. 16) - an inspection can trigger back-payments over the entire period.
Insurance gaps: no protection in case of accident or illness
A frequently underestimated risk of undeclared work is the lack of insurance. When legally registered, you are automatically covered by accident insurance (AIA):
AIA accident insurance:
All accident costs, rehabilitation and disability pension are fully covered. (Suva)
OASI/DI:
Contribution credits for retirement and disability benefits. (AHV Merkblatt 2.06)
With undeclared work:
You pay nothing and have no insurance protection. A workplace accident can put you in financial distress.
What happens in a real emergency is shown by a concrete example: if your cleaner has an accident without insurance, you as the employer are personally liable for treatment costs and lost wages. More in the article Cleaner injured without insurance - who pays?
Tax liability and back payments
Undeclared work is also a form of tax evasion. If discovered, you face not only fines but also back taxes:
- $Retroactive taxes: You must pay all unpaid income, cantonal and municipal taxes (retroactively up to 10 years). (Quelle: BSV)
- %Late interest: The state charges late interest on outstanding taxes (approx. 5% per year). (BSV)
- !VAT liability: If you were active without paying VAT, these amounts can also be recovered.
- 3xPenalty surcharge: Up to 300% penalty surcharge for deliberate tax evasion. (DBG Art. 175)
By the way: if you register your household help correctly, you can claim the costs in your tax return and deduct cleaning costs from your taxes. For foreign employees, withholding tax also applies - something completely ignored with undeclared work.
The bill comes later.
A rough, honest estimate of the AHV contributions you would owe if you were audited. Set up your case:
Hourly wage (guideline)
Retroactive AHV/IV/EO + ALV owed
Employer and employee share combined, you are liable for both.
Possible fine range (guideline)
Late interest and fines are cantonal and vary a lot. Only a rough indication, not an assessment.
The real damage is usually not the AHV, but that your cleaner stood there without accident insurance and without pension contributions. That part cannot be fixed retroactively.
Registering properly costs CHF 19.90 a month, flat. Clino handles the AHV registration, payroll and contract. 30 days free, nothing is charged before day 30.
Register, nothing charged before day 30 More on this: paying your cleaner in cash →Illustrative estimate, not legal or tax advice. Calculated with AHV/IV/EO 10.6% and ALV 2.2% (employer plus employee share) on the estimated gross wage of the period, max. 5 years retroactive. Hourly wages are NAV guideline values, varying by canton. UVG, FAK, withholding tax, late interest and fines are not fully reflected here. (As of 2026)
CHF 170 a month - or a four-figure hit all at once
Example: family with a cleaner, 6 hrs/week, 2 years.
CHF 19.90 Clino + approx. CHF 100–200 social contributions · full insurance cover
Without registration (illegal)
- •Fines plus tax penalties
- •No accident insurance coverage
- •Tax back payments + late interest
- •No OASI pension, no loans possible
With Clino (legal)
- •100% legally compliant from day 1
- •AIA, OASI, DI - everything automatically covered
- •Correct tax accounting included
- •Pension building, creditworthiness, security
Registering pays off - for both sides
Doing it properly isn't a tedious chore. It brings concrete benefits - to you as the employer and to the person working for you.
For you as the employer
- Insured, not liableIf an accident happens at your home, insurance pays - not you out of pocket.
- Save on taxesPart of the cost is deductible from your taxes.
- Legal certaintyNo fines, no back-payments, peace of mind.
- A reliable relationshipFairly employed staff stay longer and recommend you.
- No paperworkClino handles the contract, payroll and registration for a flat CHF 19.90/month.
For the employed person
- Pension & AHVEvery declared wage counts toward the future pension.
- Accident & sicknessInsured from hour one; pay continues when ill.
- Unemployment & maternityEntitled to unemployment benefits and maternity allowance.
- Proof of incomePayslips for renting a flat, getting credit or a residence permit.
- Holidays & protectionAt least 4 weeks of paid holiday and statutory notice protection.
Proper employment isn't a burden - it's security for both sides.
Register properly nowHow to legalize undeclared work
The good news: there are legal ways to regularize previous undeclared work - including through the simplified settlement procedure (FSIO simplified procedure). You must self-report, but this avoids more severe consequences:
Voluntary registration with the authorities
Contact your cantonal or municipal tax authority and social insurance office. Voluntary registration can significantly reduce your penalties.
Arrange tax back payment
With voluntary reporting, you can often arrange instalment payment plans for taxes. This immediately reduces the financial risk.
Pay back social insurance contributions
The social insurance office often accepts back payments, especially if you are properly registered afterwards.
Complete formal registration
As self-employed: register your business, choose a pension plan, join OASI. As an employee:
Moving from cash to registered
Maria
online
Hi Maria, I want everything in our home to be above board. I'll register you officially from next month, your hourly wage stays the same, and I'll cover the contributions as the employer. That way you're protected for accidents and illness.
18:10Oh, that's kind, thank you! Does anything else change for me?
18:25Only for the better: you get a payslip and are properly insured. I'll take care of the registration.
18:28The easy solution: legal employment or gig-work platform
Honestly, the Swiss state makes this unnecessarily hard for private households. No single point of contact, five different insurances, cantonal variations - it's absurd bureaucracy for someone who comes two hours a week. That doesn't change the liability. And the liability is real.
If you only work occasionally or want flexibility, there are now legal alternatives that are much simpler than undeclared work:
Why legal work is better
Transparency without worries
No fear of raids or fines. You work without constant worry of being discovered.
Full insurance coverage
Accident insurance, OASI credits, sick pay - everything is automatically covered.
Build pension credits
Every year of legal work increases your OASI pension by approx. 3-5% per contribution year.
Loans and mortgages possible
Banks require legal income. Undeclared work excludes you from financing.
No extra time required
Registration takes 2-3 hours. Then everything runs automatically. No time-consuming hiding.
Specific options:
Occasional work (up to CHF 10,000/year)
Clino makes employing your domestic helper fully legal: employment contract, AHV registration and payslips for CHF 19.90 a month. You stay the employer, without the paperwork.
Self-employment with a business
Registration as a sole proprietor with the municipality. Low cost (usually free), all social insurance available. Ideal for flexible work in trades, services or IT.
Regular employment (part-time or full-time)
The classic option. Employment contract with employer, regular salary, automatic insurance. Legal certainty for both sides. For domestic workers, this is particularly straightforward - our guide shows how.
Mixed models (e.g. 50% employed + 50% freelance)
Many workers today combine employment with freelance side work. Completely legal and widespread.
Checklist: How to stay on the safe side
Your Compliance Checklist
Start in your canton
All details on compensation office, contributions and registration.
Frequently asked questions
What fines can I expect for undeclared work in Switzerland?
Does undeclared work affect my insurance coverage?
Can I retroactively register my domestic worker?
How do authorities detect undeclared work?
What is the difference between undeclared work and legal employment?
Conclusion: Undeclared work costs more than it saves
Undeclared work may save money in the short term, but the risks are enormous: administrative fines, tax back payments with penalty surcharge, no insurance coverage in case of accident, and the constant fear of discovery. Legal alternatives are now easier and cheaper than ever. With modern platforms, flexible employment models and simplified self-employment, you can work legally - without risk, without stress.
Switzerland offers you all the tools for legal, secure and socially insured work. Use them.
The first step: register your cleaner properly - our guide shows you how in just 5 steps.
Looking for your canton's guide?
Register household help: All 26 cantons at a glanceFurther reading
Ready for the legal alternative?
With Clino you can find or offer work legally. No undeclared work, no hidden costs, full transparency and insurance coverage from day one. Calculate your costs with our Cost calculator or compare Clino vs. Quitt.
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Legal notice: This article provides general information about undeclared work in Switzerland. It does not replace legal advice. Exact penalties and regulations may vary by canton. For specific questions, please consult a tax advisor or lawyer. The information is based on the Federal Act on Measures to Combat Undeclared Work (BGSA), as of 2026.
