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The threshold amount for 2026 stays at CHF 120,000 of gross yearly earnings. The fact that your pay is beyond this point means that there is a fundamental change in your dealings with the tax authority. You enter a procedure known as Nachträgliche ordentliche Veranlagung (NOV). Your monthly paycheck withholding is simply treated as an advance payment.
Don’t panic—this is actually a massive financial opportunity rather than a penalty. The standard Quellensteuer only accounts for generic, flat-rate deductions. Because you are filing a full 2026 tax return, you can unlock heavy-hitting expat tax in switzerland for foreigners deductions that standard withholding ignores:
Pillar 3a Private Pension: You can deduct up to CHF 7,258 in contributions to slash your taxable income.
Pillar 2 (Pensionskasse) Buy-ins: If you moved here mid-career, you have massive ‘contribution gaps’. You can voluntarily buy into your company pension fund, and that entire amount is completely tax-deductible.
Professional Costs: Commuting expenses and education courses can be written off.
Just make sure to keep your Lohnausweis (salary certificate) safe at the end of the year. If you don’t file, the authorities will eventually find you, and you will miss out on thousands in legal refunds!

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