Swiss tax return for Hungarians: filing, NOV and deductions

Short answer: who must file a Swiss tax return?

A holder of a C settlement permit normally files the same ordinary return as a Swiss citizen. An employee taxed at source enters a subsequent ordinary assessment, known as NOV, when a mandatory condition applies or after a valid voluntary request. First identify the procedure, competent canton and deadline; then assemble the complete income, asset and deduction file rather than starting with isolated deductions.

Quick facts

• Procedure: ordinary assessment or mandatory/voluntary NOV alongside tax at source.

• Authority: the canton of residence and often the municipal tax office; there is no single national filing portal.

• Deadlines: the ordinary deadline is shown on the filing notice and may be extendable; the voluntary NOV request by 31 March of the following year is not.

• Core records: salary certificates, bank and investment statements, pension and insurance certificates, and deduction evidence.

• Scope: declare the relevant full income and asset position, not only Swiss net salary.

• Outcome: NOV can produce a refund or an additional bill; it is not an automatic tax saving.

1. Choose the correct assessment route

Hungarian citizenship does not determine the procedure. Permit status, tax residence, income and assets do. The federal tax-return guide states that foreign nationals holding Permit C use the same return as Swiss citizens, while other foreign employees are generally taxed at source. Being taxed at source does not mean a full return can never be required or requested.

Use the separate Swiss withholding-tax guide for monthly tariff and employer calculation, and the Hungarian–Swiss tax-residence guide for treaty residence and cross-border allocation. Keeping these outcomes separate prevents a filing process from being confused with a residence decision.

2. Mandatory versus voluntary NOV

NOV means subsequent ordinary assessment. Source tax already withheld is credited without interest against the ordinary federal, cantonal and municipal taxes. The full assessment can then create either a refund or a balance payable. The Federal Tax Administration source-tax page requires all income and assets to be declared in NOV; one attractive deduction cannot be evaluated in isolation.

For mandatory NOV, the familiar CHF 120,000 salary threshold is not the only possible trigger. Zurich currently lists annual gross employment income of at least CHF 120,000, other income not taxed at source of at least CHF 3,000, and worldwide assets of at least CHF 80,000 or CHF 160,000 for married couples. These are bounded Zurich implementation figures, not universal canton values. Check the current page of your canton.

A resident source-taxed person may request voluntary NOV to claim allowable expenditure only partly reflected in the tariff. The request must reach the canton by 31 March of the following year. The federal authority calls this a non-extendable forfeiture deadline. After a valid request, the canton sends returns in subsequent years until source-tax liability ends. Model the full assessment before opting in.

3. Do not confuse the two deadlines

The ordinary return deadline appears on the cantonal notice. ch.ch explains that an extension can generally be requested. Zurich currently uses 31 March of the following year and requires an extension request before expiry through the municipal tax office. That is a canton example; the current notice for your canton, municipality and tax period controls.

An extension for the later tax return does not extend the 31 March deadline for a voluntary NOV request. Keep two calendar items and save proof of each submission. A telephone conversation or an extension confirmation for the return cannot revive a missed NOV request. If unsure, ask the competent canton in writing before the deadline.

4. Build the document package

An employer provides a yearly Swiss salary certificate, usually before the end of January. You need one for each employer. Reconcile each certificate with monthly payslips and bank receipts and request a corrected certificate if necessary. Use the Swiss payroll-deductions guide to understand the monthly rows without treating the payslip as a replacement for the annual certificate.

• Salary certificates from every employer plus evidence of self-employment, side jobs and other income.

• Year-end balances, interest statements and investment reports for every bank or postal account.

• Records for real estate, securities, cash, relevant insurance surrender values and pension assets.

• Insurance, second-pillar and pillar-3a certificates and evidence for training, childcare, donations and medical costs.

• Evidence for commuting, meals away from home and other cantonally permitted professional expenses.

• Dated changes in marital status, children, address, employment, arrival, departure and foreign periods.

5. Declare the full income and asset picture

The return assesses income and wealth taxes. Federal guidance covers employment, self-employment, side-job income, investment income, pensions and other receipts. Assets include real estate, securities, cash, account balances and relevant insurance values. All cantons and municipalities levy a wealth tax. Do not omit a Hungarian bank account or property simply because a treaty may later restrict how Switzerland taxes it.

Disclosure, allocation of taxing rights and relief from double taxation are separate questions. For Hungarian property, workdays in several countries, dividends, a business, pension income or a mid-year move, create a dated country-by-country schedule. Then apply residence and treaty rules or obtain personal advice. A general page cannot calculate a two-country case from nationality alone.

6. Deductions depend on canton and evidence

A deduction does not reimburse the whole expense. Federal guidance lists professional costs, insurance and medical expenses, second- and third-pillar contributions, further training, donations, childcare, debt interest and property maintenance as possible categories. The permitted amount varies by canton and tax period. Never copy a ceiling or flat rate from another canton or an old calculator without checking the current instructions.

Keep the pillar-3a certificate in the filing dossier, while eligibility, limits, product choice and withdrawal remain in the third-pillar guide. Zurich's current online guidance distinguishes mandatory and voluntary attachments and tells taxpayers to retain every supporting record until the assessment is final. A document not uploaded initially can still be requested later.

7. File in eight controlled steps

1. Identify the route. Ordinary return, mandatory NOV, voluntary NOV or source-tax correction.

2. Protect the dates. Track the NOV request and the return separately; request any ordinary extension in time.

3. Create a control sheet. Give every income, asset, prepayment, deduction and document its own row.

4. Reconcile records. Salary certificate, payslips, bank receipts and source-tax certificate should agree.

5. Use the current canton system. Follow the instructions for the correct tax period, not an old screenshot.

6. Attach what is required. Upload mandatory evidence and retain the organised remainder.

7. Save the filing. Keep the full PDF, attachment list and electronic confirmation.

8. Review the assessment. Compare income, assets, deductions, source-tax credit and appeal deadline.

8. What happens after filing?

The authority may ask questions or request more evidence before issuing the assessment decision. In NOV, source tax already paid is credited; the remaining difference is refunded or billed. Review the assessment line by line against the submitted return. A high source-tax deduction does not guarantee a refund, and a low monthly deduction does not prove that the final liability is settled.

Act within the period printed on the decision if something is wrong. Zurich currently allows an online return to be corrected while the definitive assessment is not yet final, but the form and deadline for your case are those stated by the competent authority. Material differences and cross-border issues justify review by a qualified tax adviser.

9. Common errors and when to obtain help

• Confusing the potentially extendable return deadline with the non-extendable NOV request deadline.

• Treating NOV as a guaranteed refund without modelling all income and assets.

• Omitting foreign accounts, property, investments or side income.

• Using another canton's thresholds, deductions or filing date.

• Using payslips instead of the salary certificate or filing an uncorrected certificate.

• Deleting evidence too early or claiming a deduction without a traceable record.

• Using a source-tax correction for deductions or NOV for a simple tariff error.

Obtain personal help for dual residence, foreign income, self-employment, property, a mid-year move, work in several cantons, material deductions, voluntary NOV or a disputed assessment. If you are leaving Switzerland, combine the tax file with the moving-back-home checklist. Bring a dated chronology, complete document index and specific questions to the adviser or canton.