Who in Canton Thurgau is looking for the permit for sex work is looking for something that doesn’t exist. Thurgau has no prostitution or sex work law, no cantonal registration requirement, and no counter where you register as a sex worker. What exists instead are five offices that each want something different from you: the Office for Economics and Labor, the Office for Health, the Social Insurance Center, the Tax Administration, and the Municipal Tax Office. Each has its own deadline, and several of these deadlines are shorter than a work week.
This article goes through them one by one — not as legal advice, but as a map: which notification goes where, who is liable if it’s missing, and what contributions and taxes actually come together in 2026.
What’s Missing in Thurgau — and What Applies Instead
The starting situation for sex work in Canton Thurgau is different from, say, Bern, Geneva, or Neuchâtel: there is no cantonal special law with registration register, permit number, and control card. Therefore, the general statutes apply — the Police Act, the Planning and Building Act including communal building and zoning regulations, the Hospitality and Alcohol Trading Act, as well as tax, foreigner, and social insurance law.
Two things are important for understanding this. First: Since June 1, 2024, the cantonal police may enter hospitality, accommodation, and erotic businesses as well as premises with commercial sexual services — the Parliament removed preventive searches without concrete suspicion from the proposal. How far this authority extends and what it means at the door is detailed in the Police Act. Second: where work is permitted is decided by the municipality through building law, not by the canton through a sector law — this part too is worked out separately.
Missing special rules thus do not mean: fewer obligations. They mean: the obligations are distributed. Those who want to see the opposite model — a canton that explicitly bundles reporting at one location — will find it in Basel-Stadt, where you report instead of obtaining a permit.
Counter 1: Registration Procedure with the Office for Economics and Labor
For citizens of EU and EFTA countries, short-term employment in Switzerland — up to 90 days per calendar year — requires registration. Online registration via the federal portal is free. Questions should be directed to the Labor Market Supervision department of the Office for Economics and Labor (AWA), Staubeggstrasse 3 in 8510 Frauenfeld, phone 058 345 56 32.
Deadlines differ depending on the situation: an assignment as a posted employee or as a self-employed service provider must generally be registered eight days before the start of employment; when starting work with a Swiss employer, registration must occur before work begins. This is where things most often go wrong in practice — not because registration is difficult, but because it cannot be remedied retroactively.
If It Lasts Longer Than 90 Days
From day 91 in the calendar year, the registration procedure ends and a permit is required — to which there is no legal entitlement. For self-employed activity, the Work Permits specialist office in the Legal Department of the AWA ([email protected]) requires proof of an active and viable self-employed activity. The fact sheet names possible documentation such as business plan, contract volume, rental agreements, infrastructure, bank statements, and where applicable, a commercial register excerpt; the authority may request additional documents. Depending on residence, this results in a B-EU/EFTA permit (residence in Switzerland) or a G-EU/EFTA cross-border worker permit.
Two special cases: citizens of the United Kingdom can no longer use the registration procedure and need a permit under the Aliens and Integration Act. And anyone not from the EU/EFTA area falls under the AIA anyway — with significantly stricter requirements.
Important for self-assessment: in terms of foreigner law, only those who operate outside a business, act in their own name, and bear the entrepreneurial risk themselves are considered self-employed. Those who work in a club under its infrastructure are regularly classified differently — with consequences for social insurance, tax deduction, and entitlements. The Federal Court stated in 2021 in a Thurgau case that sex workers registered in the notification procedure had no entitlement to short-time compensation; the employment practices and their gaps are a separate chapter.
Counter 2: Health Insurance — Responsibility of the Office for Health
This counter is most often overlooked because it has nothing to do with permits. The fact sheet of the Office for Health (Promenadenstrasse 16, 8510 Frauenfeld, phone 058 345 68 40) for citizens from EU/EFTA countries in the notification procedure is clear: anyone employed in Switzerland is subject to Swiss health insurance obligation under the Freedom of Movement Agreement — and insurance coverage in the country of residence expires during this time.
Concretely, this means:
- Take out basic insurance as of the date of starting employment with a Swiss health insurer.
- Exception only with equivalent coverage, which the fact sheet describes as private insurance with significantly better coverage. Those privately insured register with the health insurance control office of the municipality where the employer is based.
- In both cases, submit proof of insurance unsolicited to the municipality.
- After 90 days with residence permit, the obligation applies anyway — a private solution is then no longer accepted.
The European health insurance card is not an exemption for employed persons. Those who rely on it end up without a cost bearer in an emergency.
Counter 3: Self-Employed or Not — Decided by the Social Insurance Center
The status is decided not by the business and not by your own invoice, but by the compensation fund. At the Thurgau Social Insurance Center (SVZ, phone 058 225 75 75), you must first submit an application for self-employed persons — online, free of charge. Examined above all: activity under your own name and on your own account, assumption of economic risk, work for multiple clients.
If status is recognized, for 2026:
- AHV/IV/EO: maximum 10 percent of assessable income (8.1% AHV, 1.4% IV, 0.5% EO). Below CHF 60,500, the rate decreases gradually; if income is below CHF 10,100, the minimum contribution of CHF 530 per year applies.
- Settlement: first provisional contributions based on the previous year, later the tax assessment sets the final amounts — additional payments are thus planned, not surprising.
- Family Compensation Fund: the contribution for self-employed persons decreases from January 1, 2026 from 1.5 to 1.4 percent of AHV-liable income.
- Allowances: CHF 215 child allowance, CHF 280 education allowance per month (daily rates CHF 7.20 and CHF 9.35 respectively). Thurgau does not have a birth allowance. Entitlement for self-employed persons starting from AHV-liable profit of CHF 7,560 per year.
Occupational pension and accident insurance for self-employed persons are not mandatory — if you don’t organize anything here, you have nothing. That it’s worthwhile to sort out the financial side early rather than afterwards is shown by the comparison with a canton that also works without a sector law: In Uri, the tax return replaces the salon counter.
Counter 4: Withholding Tax — A Central Counter Since 2023
Foreign employees without Settlement Permit C with tax residence or stay in Thurgau (§ 109 StG, Art. 83 DBG) are subject to withholding tax, as are persons resident abroad who receive income here — cross-border commuters, weekly commuters, and short-term workers (§ 114 StG, Art. 91 DBG). Since January 1, 2023, withholding tax in Thurgau is no longer handled through municipal tax offices but centrally through the Tax Administration — older information materials sometimes still cite the old responsibility.
Obligations rest with the business, not with the individual:
- New withholding tax-liable employees must be registered within eight days of starting work; changes to personal circumstances also within eight days.
- Settlement is generally monthly within 20 days after the beginning of the following month. Those who employ no more than ten withholding tax-liable persons may, on request, settle quarterly.
- The employer is liable for payment regardless of negligence (§ 122 para. 2 StG).
One detail that becomes expensive in the milieu with changing work locations: when multiple employment relationships exist simultaneously, the salary-determining income is recalculated to the actual overall employment degree — and to 100 percent if this degree is not disclosed. Those who stay silent tend to pay too much. If the relationship begins or ends mid-month, it is recalculated on a 30 calendar day basis.
The Thurgau Flat Rate
Thurgau was a pioneer of flat-rate settlement in the erotic industry. Documented in reporting is a flat rate of CHF 400 per month per person, which the Tax Administration understood as a „security amount“; for social insurance, a daily wage of CHF 200 was assumed for difficult-to-determine turnover. The then-head of the Tax Administration spoke of several hundred thousand francs in annual revenue; Lucerne and Aargau adopted the model, criticism arose because the estimate was too low. These figures come from media reports from the 2010s and are not documented as current 2026 rates — anyone counting on this should first check with the Thurgau Tax Administration what practice applies today.
Correction: Recalculation or Subsequent Ordinary Assessment — Both Until March 31
Incorrectly settled is not finally settled, but the deadline is tight:
- Recalculation (§ 22 StV) until March 31 of the following year for incorrect gross wages, incorrect salary-determining income, or incorrect tariff application. Additional deductions are not possible in this process.
- Subsequent Ordinary Assessment (NOV) on request until March 31 — necessary if deductions are to be claimed. The application applies until the end of withholding tax liability and nationwide; for those resident abroad, it generally requires that at least 90 percent of worldwide income is taxable in Switzerland.
- Mandatory NOV becomes for residents with gross income from employment over CHF 120,000 or if other, non-withheld income or taxable assets are added — such as self-employed side income.
- Withheld withholding taxes are credited without interest. The business itself may submit a corrected settlement by March 31.
Counter 5: Tax Return with the Municipal Tax OfficeAnyone living in Thurgau and paying taxes properly must file their tax return with the municipal tax office by April 30th of the following year – not with the canton. The municipality also grants extensions of filing deadlines; anyone who professionally completes tax returns can request extensions for mandates until December 31st of the declaration year at the latest. Anyone who fails to file despite reminders risks an estimated assessment and a fine, which tax practice sets at up to CHF 150 for a first-time failure to file by natural persons.
Your place of residence counts: The total tax rate is composed of state, municipal, school, and church tax rates. For 2026, according to the statistical communication of the canton, 72 of the 80 municipal authorities maintained the previous year’s rate, four increased it, and four lowered it. Kreuzlingen is at 64, Weinfelden at 55 percent. Be careful with online comparisons: some lists show only the municipal tax rate, others the total tax rate – if you’re comparing figures, you first need to know which measure is meant.
Value Added Tax: The CHF 100,000 Threshold
Sexual services are normal services for VAT purposes. Anyone becomes subject to taxation upon reaching CHF 100,000 in annual turnover from taxable services; the standard rate is 8.1 percent. Settlement using the net tax rate simplifies administration – the applicable rate depends on the industry category and must be clarified with the Federal Tax Administration, not estimated.
How unpleasant a missing accounting system becomes is shown by a case judged by the Federal Court: A contact bar had to pay back around CHF 440,000 in value added tax for the years 2007 to 2010 after the tax authorities had estimated the turnover – among other things based on champagne sales and condom purchases. If you don’t present your own figures, you get someone else’s.
Where the Municipality Has a Say
The municipal level does not regulate the person, but the place – and does so differently from municipality to municipality:
- Arbon has included prostitution in its regulations for safety and order; violations of these regulations can, according to reports, be punished with fines up to CHF 300. However, the same reporting also shows that rules and enforcement can diverge: despite restrictions near schools, a business continued to operate near a school path in the Bergli district.
- Kreuzlingen had its zoning plan and building regulations approved by the Department of Construction and Environment in December 2022, with complaints still pending at that time.
- Frauenfeld works with a completely revised building regulation; in the region, a uniform zone catalog was developed for thirteen municipalities.
This leads to the practical rule: Before signing a lease, the question about zoning and use should be directed to the building authority of the specific municipality. An answer from a neighboring municipality does not apply.
Advice That Costs Nothing
The specialist center for sexual health is Perspektive Thurgau, working on behalf of the Health Department. The team regularly seeks out sex workers at their workplace – in salons, contact bars, and private homes – advises on sexually transmitted infections, offers tests, and distributes information materials, condoms, and lubricants. Headquarters: Schützenstrasse 15, 8570 Weinfelden, telephone 071 626 02 02; the HIV and STI line is 071 626 02 39. There are also seven regional specialist centers, including in Arbon, Frauenfeld, Kreuzlingen, Münchwilen, Romanshorn, and Weinfelden.
For victim assistance following violence or threats, the BENEFO victim assistance center is responsible, located at Zürcherstrasse 149 in Frauenfeld, telephone 052 723 48 26. In case of suspected human trafficking, the FIZ is mandated in Thurgau. The victim assistance number 142 applies to the association of cantons AR, AI, GL, GR, and SG – not to Thurgau.
Checklist
- AWA, Labor Market Supervision: Notification for employment up to 90 days – eight days in advance for posted work or independent services, before starting work for a job. Free, online.
- AWA, Work Permit Specialist Center: Application if more than 90 days per calendar year – with proof of subsistence-level self-employment.
- Health Department / Municipal Health Insurance Control Office: Basic insurance from the first day of work; submit proof unsolicited.
- Thurgau Social Security Center: Application for recognition as self-employed, before the first franc of turnover.
- Thurgau Tax Administration: Source tax registration by the employer within eight days; recalculation or NOV application by March 31st.
- Municipal Tax Office: Tax return by April 30th; request extension of deadline there beforehand.
- Municipal Building Authority: Clarify zoning question before the lease is finalized.
What This Overview Does Not Replace
Three limitations without which the rest would be misleading. First: contribution rates, allowances, and tax rates change annually – the values mentioned here refer to 2026 and to the information published at the time of research. Second: the flat-rate practice in the erotic industry is documented through media reports from the 2010s, not through a current fact sheet; anyone calculating with this should request written information from the tax administration. Third: everything related to the workplace is decided by the municipality, and differently at that. In each individual point, only the information from the responsible authority – cantonal office or municipality – is binding. This is precisely why it’s worth obtaining these clarifications before a deadline expires, and not only when an invoice arrives.