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Tax Declaration Zürich 2026: Deadline, Deductions & What Expats Need to Know
This is a very common confusion—especially if you’ve recently moved to Zürich.
If you are filing a tax declaration during 2026, you will generally be dealing with the 2025 tax period. For Zürich residents, the standard deadline for the 2025 tax declaration is 31 March 2026. If you need more time, you can request a deadline extension before the filing deadline.
The 2026 tax declaration itself relates to the 2026 tax period and is handled separately. The Canton of Zürich has already published the 2026 tax forms and guidance.
So, what should you prepare? Keep your salary certificate (Lohnausweis), bank and investment statements, pension documents, insurance information, and receipts for potentially tax declaration zurich deductible expenses. Depending on your situation, deductions can make a noticeable difference—so don’t simply rush through the form.
Another useful point: Zürich now offers ZHprivateTax, an online solution for preparing and submitting tax declarations.
And what about foreigners on Quellensteuer (withholding tax)? Certain foreign employees may still become subject to an ordinary tax assessment. For example, Zürich specifies rules for residents whose taxable-at-source gross income exceeds CHF 120,000 in a calendar year.
Swiss tip: Keep your documents tidy, check every deduction carefully, and don’t leave the declaration until the last minute. Zürich paperwork is much nicer when you have a proper system.
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