Tax return in Thurgau simply explained
Do you live or work in the Canton of Thurgau and want to file your tax return on time and without errors? On this page, you will find all the key information about deadlines, deductions, submission options, and the specific tax rules in Thurgau.
Submission deadlines in the Canton of Thurgau
Private individuals:
The tax return must be submitted by March 31 of the following year.
Companies:
For companies, the deadline is usually July 31.
Extension: A deadline extension can be requested in writing or online – generally until September 30 for private individuals and December 31 for companies.
Note: Depending on the canton, fees may be charged for requesting an extension.
If the tax return is submitted late without an extension, reminder fees or fines may apply.
How do I file a tax return in Thurgau?
You have two options for submission:
- Online with eFisc: The cantonal software eFisc allows you to complete your tax return electronically, with plausibility checks and secure online submission including digital document upload.
- Paper form: Alternatively, you can print out the tax return and submit it by post – ideal if an electronic signature is not available.
Tip: The digital submission is faster, more secure, and reduces the risk of follow-up questions thanks to automatic checks.
Special features in the Canton of Thurgau
In the Canton of Thurgau, the following tax specifics apply:
- Progressive income and wealth tax with fair tariff levels: Thurgau levies a progressive income and wealth tax with graduated tariffs that ensure a socially balanced and performance-based tax burden.
- Tax relief for companies and promotion of new jobs: In the economic interest of the canton, companies can be granted tax relief for up to ten years, particularly if they create new jobs or carry out important business activities. This supports economic development and the establishment of businesses.
- Moderate tax rate of 109% on the cantonal tax base: The cantonal tax rate is currently 109%, resulting in a moderate overall tax burden, which is supplemented by municipal tax rates. This keeps the canton attractive for taxpayers.
- Flat-rate deductions for asset management and property maintenance costs: Thurgau allows flat-rate deductions in the tax return for costs related to asset management and property maintenance, providing relief for private asset holders and property owners.
Support in special cases
Our specialists also support you with more complex tax matters, such as:
- Moving into or out of the canton of Thurgau
- Self-employment or part-time business activity
- Withholding tax with voluntary assessment (SOTA)
- Capital benefits from occupational pension schemes or life insurance
- Income or assets abroad
- Property ownership, rental, or sale
We ensure that your tax return is complete, accurate, and optimized from a tax perspective.
Let our professionals fill out your tax return in Thurgau
Save time and avoid mistakes — our experienced tax professionals will prepare your tax return in Thurgau. Fast, accurate, and tailored to your personal situation.
Frequently asked questions
Below you will find answers to frequently asked questions about tax returns in Thurgau.
How much does it cost to fill out the tax return in Thurgau with Taxea.ch?
We offer various packages starting at CHF 99, which are tailored to your tax situation. You can apply for the subsequent ordinary tax assessment (SOTA) separately for CHF 80. Personal tax advice is available as an additional option. A consultation is included in the Prime package.
Which languages do you offer tax consultation services in?
We speak four languages and are there for you throughout Switzerland. Our multilingual tax specialists can advise you in German, French, Italian and English — ideal also for expats who are settling in Switzerland.
Are you also responsible for communication with the tax authorities?
Yes, with our Bestseller and Prime packages, we fully represent you vis-à-vis the tax authorities. This allows you to file your tax return without worries. After receiving the tax return, we will check it and discuss the results with you personally.
How does the collaboration with specialists work?
You enter your data and upload your documents to our online portal. Our specialists will then review everything, take full advantage of all deductions and prepare your tax return. Once you have approved it, we will file it digitally with the tax office and extend the deadline if necessary. Finally, we carefully check the tax assessment and respond to any queries.
Can you help me optimize my taxes?
With each of our packages, you benefit from our design of your tax return, which exhausts all possible deductions so that you only pay the necessary amount of tax. If you opt for our tax consultation service, we will advise you on all possible optimisation options, from pension deductions to professional expenses and individual tax benefits, to ensure you are in the best possible financial position in the long term.

Do you have any questions?
Would you like to have your tax return prepared in the canton of Thurgau and still need more information?