File your tax return correctly in Schaffhausen

Private individuals:
The tax return must be submitted by March 31.

Companies:
For companies, the deadline is usually September 30.

Extension: An extension can conveniently be requested online, in writing, by e-mail, or by phone and is usually granted until November 30, 2025 or until 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.

In the Canton of Schaffhausen, you have two options:

• Online with Steuern24: The program can be downloaded, filled out, and then submitted online or printed as a PDF and sent by post. Supporting documents can be digitally captured and uploaded using the Abraxas DocCapture app.
• Paper form: Alternatively, the completed tax return can also be printed as a PDF, signed, and submitted by post. Manual completion and postal submission are still possible as well.

Tip: Digital submission saves time, avoids follow-up questions, and speeds up processing by the cantonal tax administration.

Keep these cantonal specifics in mind when filing your tax return

• Progressive corporate income tax rate: Since 2024, the Canton of Schaffhausen applies a progressive corporate income tax rate. Small companies with profits below CHF 5 million benefit from a lower rate, while higher profits above CHF 5 million and CHF 15 million are taxed at graduated higher rates. Large companies are subject to an effective tax rate of around 15% including federal tax.
• Tax relief for newly established sole proprietorships: For newly founded sole proprietorships, the cantonal government may grant tax relief for up to ten years if the business is of economic importance, preserves or creates jobs, and operates in supraregional markets.
• Increase in deductions and reduction of wealth tax: In recent years, the canton has increased the second-earner deduction as well as deductions for education and training. At the same time, wealth tax has been reduced to ease the financial burden on residents.
• Competitive tax rate with reduction for 2025: For the year 2025, the tax rate has been set at 79%, corresponding to a reduction of 4 percentage points. This strengthens Schaffhausen’s position in inter-cantonal tax competition and provides relief for taxpayers.
• Attractive deductions for families, work and research: In addition to general deductions, Schaffhausen promotes research and development with tax incentives. There are also improved deductions for families, such as childcare costs and professional expenses.

Our specialists will also support you with more complex cases in the Canton of Schaffhausen — for example with:

• Relocation to or from another canton or abroad
• Withholding tax with voluntary ordinary assessment (SOTA)
• Self-employment, part-time business or secondary income
• Capital withdrawals from pension funds or insurance policies
• Foreign income or assets
• Renting, purchasing or selling real estate

We ensure that your tax return is submitted completely and in a tax-optimized way.