Naturalization in Thurgau: requirements, tests and procedure

Context

In a nutshell

• Permit C and 10 years of residence in Switzerland for ordinary naturalization
• In Thurgau you also need years of domicile in the canton and municipality
• Mandatory language and integration tests before application
• Cantonal and municipal taxes: amounts vary, check on the municipality's website

Key facts

• What: Ordinary naturalization procedure in the canton of Thurgau
• Who: Foreign residents with C permit, according to cantonal law
• Where: Canton Thurgau, with cantonal office and municipal authorities
• Federal requirement: Permit C + 10 years of residence in Switzerland (years 8–18 count double)
• Cantonal requirement: Years of residence in the canton (Thurgau) and in the municipality, to be verified on a case-by-case basis
• Tests: Language and integration, mandatory
• Taxes: Variable amounts at cantonal and municipal level (not yet specified in this guide)
• Duration: Multi-level procedure (cantonal + municipal), times not uniquely quantified

Obtaining Swiss citizenship is a shared competence between the Confederation, Canton and Municipality. For those who live in the canton of Thurgau, the ordinary naturalization procedure follows the Federal Law on Swiss Citizenship and the Thurgau cantonal legislation. The first stake, set in Bern, is the possession of residence permit C, issued by the State Secretariat for Migration (SEM) after a certain period of regular stay.

Who can apply for naturalization

Operational details

What changes compared to other Cantons

Every Swiss canton has its own citizenship law and its own fee level, and this makes the Thurgau procedure different from those of Zurich, Bern or Vaud, just to give a few examples. While the federal requirement (C permit + 10 years, of which the years between 8 and 18 count double) is identical for everyone, the cantons add their own hurdles, usually linked to language skills and social integration.

In Thurgau, as in many other German-speaking Swiss cantons, the required language is German, at a level that is verified through a standard test. For those coming from a German-speaking region, this aspect is marginal; for those coming from other linguistic regions, it is instead a crucial turning point. The integration test, for its part, covers basic knowledge of the Swiss system, political rights, history and daily life.

Real and cumulative costs

The naturalization fee in Switzerland is made up of three items: the federal fee (set by the Federal Migration Office), the Thurgau cantonal fee and the fee of the municipality of residence. The federal fee is the same across the whole national territory; the cantonal and municipal ones vary. Added to these are the costs of any language courses, preparation materials, and, if one uses a consultancy service, professional fees.

To avoid unpleasant surprises, it is advisable to ask for a detailed quote from the chancery of the municipality of residence, which will be able to provide the exact amount of the local fees in force. The same applies to the cantonal stage.

Practical process: three levels, three steps

The procedure is structured similarly in all cantons, but with local nuances that matter. In Thurgau one starts with the cantonal application: collection of documents, proof of language, verification of integration requirements. Once the cantonal preliminary opinion has been obtained, the application passes to the municipality, where the local authority assesses the person's integration into community life. For municipalities that provide for a vote in assembly, the application is discussed publicly. Once this step has been passed, the Confederation issues the citizenship certificate and the person becomes a Swiss citizen.

Timelines: how long it really takes

The timing of the procedure varies according to the workload of the bodies involved and the completeness of the documentation. A well-prepared application, with all the correct documents, can be handled in reasonable time; a patchy file risks lengthening the times due to requests for integration. There is no single deadline valid for all Thurgau municipalities: each stage has its own schedule.

Possible obstacles and how to avoid them

The reasons for refusal can be of various kinds: insufficient knowledge of the language, criminal record, behaviour contrary to public order, dependence on social assistance, or interruption of the integration path. To reduce the risk, it is advisable to prepare well in advance: improve German, take part in the life of the municipality, regularize one's tax and contribution position.

Useful planning tools

To estimate your pension strategy, use the pension planner and the pillar 3 simulator.

Key points

Step-by-step: how to proceed in practice

Anyone planning to start the naturalisation procedure in Thurgau can follow a concrete path, to be adapted to their municipality of residence.

1. Check the basic requirements. First of all, make sure you hold a C permit and have completed the years of residence required at federal level. Years spent in Switzerland between the ages of 8 and 18 count double.

2. Gather documents. Passport, residence permit, employment certificates, language certificates, criminal record certificate, and any other document required by the municipal clerk's office or the cantonal office.

3. Language test. Register for a recognised German exam, if German is not your mother tongue. In the Canton of Thurgau, the required level is defined by cantonal law.

4. Cantonal application. Submit the application to the competent cantonal office, along with all documentation and payment of the cantonal fee.

5. Municipal application. After cantonal approval, the application moves to the municipality, which may involve an assembly vote.

6. Federal decision. Final step: the Confederation, based on the cantonal and municipal outcomes, issues the citizenship certificate.

Typical documents to prepare

• Valid identity document
• Valid C residence permit
• Language certificate (German) at the required level
• Residence and stay certificates
• Any criminal record or pending charges certificates
• Proof of sufficient financial means
• Integration certificates (work, volunteering, participation)

Mistakes to avoid

Underestimating the municipal stage is one of the most common mistakes: even with a flawless cantonal process, the municipality can reject the application for local reasons. Another frequent mistake is submitting incomplete documentation, which extends the timelines. Finally, forgetting to update personal data (change of address, marital status) can create issues during the verification phase.

Useful tools on the site

For those preparing for naturalisation, it can be useful to simulate the tax impact of a change of status or assess the social contributions involved. The site provides a calculator that allows you to estimate net salary and AVS/AI/IPG, AD, LAINF and LPP contributions, so as to have a clear picture of your contribution position before starting the procedure.

Discover the salary calculator