When you arrive, the tax authorities will ask you for an estimate of your annual income.
From March to December, you will receive advance payment invoices to be paid by the 10th of each month.
At the beginning of the following year (January), you will receive an income and wealth tax form for the previous year (link to complete your online tax declaration). You will have until the 31st March to complete and return it. The declaration can be completed online.
The tax authorities will provide you with a guide to complete your declaration, and you can also find information on certain websites:
You can request a delay in returning your declaration by telephone (vocal guide), post or Internet.
In the first year of your stay in Switzerland or if you have a special situation, it may be advisable to have your tax declaration completed by a fiduciary.