Tax deadlines in St. Gallen
When do you need to file your tax return in the Canton of St. Gallen? On this page, you’ll learn everything about deadlines, how to extend them, and what happens if you miss them.
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Ordinary tax deadlines
In the Canton of St. Gallen, the following submission deadlines apply:
- Private individuals: by March 31
- Companies: by June 30
These deadlines always refer to the tax year that ended in the previous year.
Request deadline extension & maximum deadlines
If you cannot file your tax return in the Canton of St. Gallen by the ordinary deadline, you can request an extension from the tax office. The application can be submitted either online or in writing — by both private individuals and companies. The maximum extensions are:
- Private individuals: December 31
- Companies: February 28 of the following year
Note: Depending on the canton, fees may be charged for an extension.
Good to know: If you book through Taxea.ch, the deadline extension is automatically included. You don’t have to do anything else — we’ll take care of it for you.
What happens if you file your tax return late?
If the tax return in the Canton of St. Gallen is submitted late without an extension, the following consequences may occur:
- The tax office sends a reminder
- Reminder fees or fines may be imposed
- In certain cases, a discretionary tax assessment may be carried out
To avoid additional costs and difficulties, it is advisable to submit your tax return on time or use our service.
Different deadlines for special cases
Depending on your situation, different deadlines and specific tax rules may apply. For example, this may be the case in situations such as:
- Moving to Switzerland from abroad
- Moving from Switzerland to another country
- Death during the tax year
- Starting or ending self-employment
- Establishing, restructuring, or liquidating a company
In such cases, it is advisable to clarify with the relevant tax authority directly or seek support from a tax specialist to ensure compliance with deadlines and obligations.
Frequently asked questions about tax deadlines in St. Gallen
Below you will find answers to the most important questions about tax deadlines in the Canton of St. Gallen.
What are the deadlines for filing a tax return in the Canton of St. Gallen?
In the Canton of St. Gallen, tax returns are due by March 31 for private individuals and June 30 for companies. If needed, you can request an extension.
How do I request an extension of the deadline?
You can submit the application online or in writing to the St. Gallen tax office. If you use Taxea.ch, we’ll take care of this step for you — simple and hassle-free.
Do I have to file a tax return in St. Gallen every year?
Yes, all taxable persons and companies in the Canton of St. Gallen must file a tax return every year.
What happens if I file my tax return late or not at all?
In this case, the tax office sends reminders, collects reminder fees or fines and can carry out a discretionary assessment.
Can I also apply for an extension of the deadline if I move away?
Yes, it is always possible to extend the deadline even if you move away. It is crucial that the tax office is informed in good time.
