File your tax return correctly in the Canton of St. Gallen
Do you live or work in the Canton of St. Gallen and want to file your tax return correctly, on time, and without unnecessary effort? On this page, you’ll find all the key information about deadlines, deductions, submission options, and the specific tax rules in St. Gallen.
Submission deadlines in the Canton of St. Gallen
Private individuals:
The regular deadline for filing the tax return is March 31.
Companies:
For companies, the deadline is usually June 30.
Extension:
An extension can be requested online or in writing – usually until December 31 for private individuals and until February 28 of the following year 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 St. Gallen?
In the Canton of St. Gallen, you have two options:
- Online with eTax SG (eTaxes): The online portal provides a simple way to enter, review, and submit your tax return, including the electronic upload of supporting documents.
- Paper form: You can also complete your tax return manually or print it from eTax SG and submit it by post.
Tip: Filing digitally saves time, reduces errors, and speeds up processing.
Special features in the Canton of St. Gallen
The Canton of St. Gallen has some specific tax features:
- Progressive income and wealth tax: St. Gallen applies progressive income taxation with graduated rates that also take into account different levels of wealth. This ensures a socially balanced tax burden and fair distribution.
- Attractive deductions for work and family: The canton offers a wide range of deductions, including for childcare, education costs (up to CHF 12,000), professional expenses, and voluntary professional training, to provide tax relief for families and employees.
- Uniform tax rate with cantonal harmonization: St. Gallen has a fixed cantonal tax rate (e.g. 138% for the city of St. Gallen in 2025), which influences municipal tax burdens. Harmonization laws ensure transparency and comparability across the canton.
- Promotion of innovation and research: St. Gallen supports research and development activities through additional tax deductions and incentives, strengthening the region as a business location.
Support in special cases
Our tax specialists support you with both standard and complex cases — including:
- Moving to or from Switzerland or another canton
- Self-employment, secondary income, or shareholdings
- Withholding tax with voluntary ordinary assessment (SOTA)
- Capital withdrawals from pension funds or insurance policies
- Income or assets abroad
- Property sales or real estate ownership
We ensure that your tax return is filed correctly and in a tax-optimized way.
Let our professionals fill out your tax return in St. Gallen
Our experienced tax professionals will complete your tax return in the Canton of St. Gallen — tailored to your situation, efficient, and with a focus on all possible deductions. This way, you save time, money, and unnecessary stress.
Frequently asked questions
Below you will find answers to frequently asked questions about tax returns in St. Gallen.
How much does it cost to fill out the tax return in St. Gallen 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?
You live in St. Gallen and would like to have your tax return professionally completed — we would be happy to advise you.