When do I need to submit my tax return?

In Switzerland, individuals must generally submit their tax return by March 31 of the following year. Companies usually have until September 30 in most cantons.

Tax return submission deadlines vary by canton and type of taxpayer. Here are the main deadlines and regulations:

Deadlines for individuals:

Ordinary submission deadline:

• Federal tax: March 31 of the following year
• Cantonal/municipal taxes: March 31 (in most cantons)
• Exceptions: Some cantons have different deadlines

Cantonal particularities:

• Zurich: March 31 for ordinary assessment
• Bern: March 31, extension until September 30 possible
• Geneva: February 28 for simple cases, March 31 for more complex
• Basel-City: March 31 with automatic extension until September 30

Deadlines for companies:

Legal entities (AG, GmbH):

• Ordinary deadline: September 30 of the following year
• With extension: Until March 31 of the second following year
• Requirement: Timely application

Extension requests:

Automatic extensions:

• With tax advisors: Often automatic until September 30
• Fiduciary mandates: Extension usually granted
• Complex circumstances: Additional extensions possible

Consequences of late submission:

• Default interest: 0.5-1% per month depending on canton
• Penalty fines: CHF 50-500 for first delay
• Repeat offenders: Higher fines up to CHF 2'000

Electronic submission:

More and more cantons offer online tax returns:

• • Electronic submission: Possible in most cantons
• • Automatic filling: Pre-filled forms
• • Secure transmission: Encrypted data
• • Confirmation: Automatic receipt confirmation

Tax advice with Findea.ch:

We help you with timely and correct submission:

• • Deadline management: Automatic reminders
• • Extension requests: Timely application
• • Complete processing: From recording to submission
• • Optimization: Legal tax savings

Our service: With Findea.ch, you never miss any deadlines again. We handle the complete processing of your tax return and ensure timely submission.