How are you taxed as a Swiss resident with ties to Hungary?
Dual tax residency may also arise for Hungarian citizens living in Switzerland. The actual centre of life, withholding tax and the risk of scrutiny by NAV are all decisive factors.
How is it determined whether you are liable to pay tax in Hungary or Switzerland?
The issue must be addressed in two steps: tax residence under Hungarian and Swiss domestic law must be distinguished from how the treaty resolves the two countries’ concurrent claims to tax. In Switzerland, unlimited tax liability may arise on the basis of personal connections, while in Hungary, resident status under the Hungarian Personal Income Tax Act may need to be assessed.
Tax residence is not the same as a residence permit, workplace or bank account. The Swiss equivalent of tax residence may be referred to by several terms: steuerrechtlicher Wohnsitz, or Steuerdomizil. This indicates which state considers the individual to be a resident within its own tax system.
What does unlimited tax liability in Switzerland mean?
In Switzerland, unlimited tax liability (unbeschränkte Steuerpflicht) arises on the basis of personal connections if an individual has a Swiss tax residence (Wohnsitz) or tax place of stay (Aufenthalt).
A Swiss tax place of stay may arise after at least 30 days of stay in Switzerland while engaged in gainful employment, or after at least 90 days without gainful employment. According to the interpretation cited in the dossier, this rule applies to persons holding a residence permit.
Swiss connecting factor | Verified rule or circumstance | Why is this relevant? |
|---|---|---|
Tax domicile (Wohnsitz) | May establish unlimited tax liability based on personal ties. | The Swiss tax authorities may treat the person concerned as a domestic taxpayer. |
Tax residence (Aufenthalt) with gainful employment | At least 30 days of residence in Switzerland while engaged in gainful activity. | A Swiss tax connection may arise even if the housing situation appears temporary. |
Tax residence without gainful employment | At least 90 days of residence in Switzerland without gainful activity. | The absence of employment does not in itself exclude Swiss tax residency. |
Multiple residences | The centre of vital interests (Lebensmittelpunkt) must be assessed on the basis of actual personal and economic ties. | A key issue in disputes arising from maintaining accommodation in both countries. |
Source: carefinance.ch — Steuerpflichtig in der Schweiz: Der Lebensmittelpunkt entscheidet
Why may Hungarian domestic law residency apply even with a Swiss lifestyle?
According to the interpretation set out in the research dossier, under the Hungarian Personal Income Tax Act, Hungarian citizenship alone may establish Hungarian domestic tax residence. Therefore, in the case of a Hungarian citizen, it is not safe to assume that registering in Switzerland automatically ends all Hungarian tax connections.
This does not mean that the entire tax situation is determined solely by citizenship. For this reason, the assessment under domestic law must not be conflated with the resolution under the tax treaty.
The amending protocol to the Hungarian–Swiss double taxation agreement entered into force on 1 January 2026. The purpose of the agreement is to ensure that conflicting taxation claims by the two states do not result in unresolved double taxation.
In the specific case, three questions must therefore be considered separately:
Does domestic tax residence exist under Hungarian law? In the case of a Hungarian citizen, this must be examined under the rules of the Hungarian Personal Income Tax Act.
Does tax residence or habitual abode exist under Swiss domestic law? A Swiss Wohnsitz or Aufenthalt may give rise to unlimited tax liability on the basis of personal ties.
If both countries may establish residence, how should the DBA be applied? This must be assessed on the basis of the Hungarian–Swiss agreement and the rules applicable to the relevant type of income.
In practice, the question “where does the person work?” is not sufficient on its own. The family’s place of residence, actual living arrangements, the organisation of everyday life and economic ties together indicate where the centre of life is located.
Why can retaining a Hungarian address card pose a risk?
Retaining a Hungarian address card is not conclusive evidence of tax residence in itself, but it may be a significant factor during a NAV audit. The risk increases particularly if the Hungarian address is also associated with family and asset ties that have remained in Hungary.
A recurring risk for people moving to Switzerland is that they continue to maintain their permanent Hungarian address unchanged. The address card is an administrative document, but it is not assessed in isolation during an audit: NAV may also examine the actual way of life and the circumstances connected with it.
According to the research dossier, in the event of a NAV audit, NAV may assert a right to tax global income on the basis of the Hungarian address card and family and asset ties remaining in Hungary. In this context, global income may also involve reviewing income not derived exclusively from Hungarian sources.
Which combination of Hungarian ties can be problematic?
It is not advisable to draw far-reaching conclusions from a single circumstance in Hungary. The risk arises from ties that reinforce one another.
Ties to Hungary | Why may it be relevant in a NAV audit? | What does it not mean in itself? |
|---|---|---|
Hungarian address card | Confirms the continued registration of a permanent address in Hungary. | Does not automatically prove that Hungary is the centre of vital interests. |
Spouse or child living in Hungary | May indicate a strong personal connection to Hungary. | Does not automatically determine treaty residence. |
Residential property in Hungary | May indicate housing and asset ties. | Does not automatically prove that the property is actually used as a habitual residence. |
Business or investment connection in Hungary | May demonstrate an economic connection. | Is not the same as the question of full tax residence. |
Swiss employment and accommodation in Switzerland | May support the conclusion that an individual’s economic and personal life is centred in Switzerland. | Does not exclude the possibility that a question of Hungarian tax residence may also arise. |
The correct conclusion, therefore, is not that “address card = Hungarian taxation”, but rather that maintaining an address card may create documentation and evidentiary risks. The situation is particularly sensitive if the family actually remains in Hungary while one spouse works in Switzerland.
When arranging Hungarian ties, tax, social security and family-law considerations may also be interconnected. The Hungarian address register, obligations towards NAV and healthcare entitlements should therefore not be viewed as a single administrative step.
When must Swiss withholding tax be accompanied by filing an ordinary tax return?
For foreign employees without a C permit – typically those holding a B or L permit – the employer generally deducts withholding tax (Quellensteuer) from the Swiss salary. If gross annual income reaches or exceeds CHF 120,000, a subsequent ordinary assessment, i.e. nachträgliche ordentliche Veranlagung (NOV), is mandatory.
Withholding tax is not the same as a full tax assessment based on an ordinary tax return. Quellensteuer is the tax deducted from employment income, whereas the NOV makes the ordinary tax procedure mandatory or – in certain cases – available upon application.
Who is generally subject to withholding tax in Switzerland?
According to the dossier, foreign employees without a C permit, such as those holding a B permit (Ausländerausweis B) or an L permit (Ausländerausweis L), are generally subject to withholding tax. The employer makes the deduction from the salary.
This rule affects many Hungarian employees in particular, as people arriving in Switzerland often start working with a B or L permit. However, the withholding tax deducted does not mean that no further tax obligations may arise later.
When is the NOV mandatory?
The NOV is mandatory once the CHF 120,000 gross annual income threshold is reached or exceeded. As a general rule, the threshold is uniform across cantons.
In Genf, however, certain special cases may constitute exceptions. CHF 120,000 is the general rule there as well, but in the case of employment in Genf or tax residence in Genf, it is advisable not to rely solely on the general threshold.
Situation | Tax consequence according to the dossier | Special warning |
|---|---|---|
Foreign employee holding a B or L permit | As a general rule, the employer deducts withholding tax. | NOV may be required even where withholding tax has been deducted. |
Gross annual income below CHF 120,000 | The mandatory NOV threshold is not met on its own. | The dossier does not specify any other individual circumstances. |
Gross annual income of CHF 120,000 or more | Subsequent ordinary assessment, NOV, is mandatory. | The CHF 120,000 threshold refers to gross annual income. |
Special case in Genève | An exception to the general rule may apply. | The Genève rule must be reviewed on an individual basis. |
Voluntary request for NOV | The request is irrevocable. | The ordinary tax may be higher than the withholding tax deducted, so an additional payment may be required. |
A voluntary NOV request requires particular care. According to the dossier, the request is irrevocable, and if the amount of ordinary tax exceeds the withholding tax previously deducted, the difference must be paid.
It is therefore incorrect to assume solely that filing an ordinary tax return automatically results in a tax refund. The financial impact of NOV also depends on the overall tax situation and on cantonal and municipal circumstances.
Kanton Zürich Steueramt publishes its own information on withholding tax rates and application details, while Kanton Bern TaxInfo also maintains a professional information platform. Due to cantonal differences, the canton of employment and the canton of residence may need to be examined separately.
How will the taxation of married couples change under the 2026 reform?
On 8 March 2026, Swiss voters approved the individual taxation reform (Individualbesteuerung), which abolishes the joint taxation of married couples. The reform also affects the application of withholding tax rates, but the precise implementation timetable was still being developed as of August 2026.
The aim of the reform is for taxation to be based on the individual rather than on the married couple as a joint tax unit. This change also affects the withholding taxation of married employees.
According to the dossier, the withholding tax system may, for example, replace tariff C with individual tariffs. This is not merely a technical renaming: the tax treatment of spouses’ income situations is set to change fundamentally.
What does this mean for Hungarian–Swiss families?
For families where one spouse works in Switzerland while the other lives in Hungary or earns income there, tax residence will remain a separate issue even after the reform. Individualbesteuerung is a restructuring of the Swiss tax system, but it does not replace the assessment of Hungarian–Swiss tax residence.
At the time of writing, the specific start date for the reform, its transitional rules and the final technical design of the withholding tax tariffs cannot be treated as settled facts. The outcome of the Swiss vote is known, but the precise implementation timetable is still being developed.
What evidence can establish tax residence?
Tax residence may be supported by the overall picture of actual personal and economic ties. Where there is more than one place of residence, the centre of vital interests (Lebensmittelpunkt) can be assessed not on the basis of subjective intention, but on the basis of actual ties to family, work and everyday life.
When establishing Swiss tax residence, there is no need to look for a single “decisive document”. It is advisable to maintain documentation that demonstrates over time where the person concerned lives, works and organises their daily life.
Which documents may be relevant?
The documents below do not constitute automatic or sufficient evidence in every case. Taken together, however, they may support the person’s actual living arrangements in a tax authority review or a tax residence assessment under a treaty.
Documents evidencing accommodation in Switzerland: tenancy agreement, address registration and documents supporting actual residence in Switzerland.
Documents relating to Swiss employment: employment contract, payslips and payroll statements showing the withholding tax deducted.
Documents showing the centre of family life: evidence of where the spouse and minor children actually live.
Swiss tax documents: proof of withholding tax deductions and, in the case of NOV, documents relating to the ordinary tax assessment.
Hungarian property and housing documents: these are not circumstances to be concealed, but facts relevant to a comprehensive assessment of residency status.
Travel and lifestyle indicators: retained documents supporting the actual pattern of stay for a person living in more than one country.
Consistency across documents may matter more than a single piece of evidence considered strong. If someone claims to have a Swiss lifestyle, but the family, housing and the majority of everyday personal ties are connected to Hungary, their residency status may become disputable.
What should be arranged in advance when moving abroad?
In the first year after moving abroad, most uncertainty arises because the Hungarian and Swiss administrations view the individual's circumstances at different points in time and on the basis of different documents. It is therefore advisable to ensure that the moving date, the start of employment in Switzerland, the start of Swiss accommodation and the family's actual place of residence are aligned.
Hungarian health insurance status, the Hungarian address register, any potential filing obligation towards NAV and Swiss taxation are not matters handled by a single authority. No administrative step should automatically be taken to determine the legal consequences in all other areas.
Sources
carefinance.ch — Tax liability in Switzerland: the centre of life is decisive
NAV — Information booklet on income from abroad for private individuals
taxlawblog.ch — Switzerland and Hungary sign an amending protocol to the double taxation agreement
Kanton Bern TaxInfo — Withholding tax / subsequent ordinary assessment
EDA — Taxes and double taxation in relations between Switzerland and the EU/EFTA
Related Articles
In Brief
For a person with ties to Hungary who lives in Switzerland, tax residency is not determined solely by their registered address, employment or residence permit, but by the overall picture of their personal and economic connections. In cases of dual residency, the Hungary–Switzerland double taxation agreement governs taxing rights; with a B or L permit, withholding tax is generally deducted, while a gross annual income of CHF 120,000 or more may trigger mandatory NOV.
Key Takeaways
- Assess residency separately under Hungarian and Swiss domestic law, then determine how the double taxation agreement applies.
- Consistently document Swiss accommodation, employment, family life and actual presence in Switzerland.
- Assess the retention of a Hungarian address card together with family and asset-related ties, rather than treating it as standalone evidence.
- With a B or L permit, expect Swiss withholding tax to be deducted by the employer.
- For gross annual income of CHF 120,000 or more, check whether mandatory NOV applies; in a Genève situation, also examine any possible exceptions.
- Before applying for voluntary NOV, consider the financial consequences, as the application may be irrevocable and may result in an additional payment.
Frequently Asked Questions
Should someone living in Switzerland but with ties to Hungary pay tax in Switzerland or Hungary?
The answer is not determined solely by the place of residence or work. First, residency under Hungarian and Swiss domestic law must be assessed; in cases of dual residency, taxation must then be resolved under the Hungary–Switzerland double taxation agreement and the rules applicable to the specific income.
Does registering in Switzerland automatically end Hungarian tax residency?
Not necessarily. According to the interpretation set out in the article, Hungarian citizenship alone may give rise to residency under Hungarian domestic law. Therefore, Swiss registration does not automatically mean that all Hungarian tax connections have ceased.
Does keeping a Hungarian address card automatically mean that tax must be paid in Hungary?
No. An address card alone does not prove that Hungary is the centre of vital interests, but it may be a relevant factor in an NAV review. The risk may increase if family, housing and asset-related ties in Hungary are also retained.
When can unlimited tax liability arise in Switzerland?
Unlimited tax liability may arise in Switzerland on the basis of a Swiss tax residence, i.e. Wohnsitz, or a tax residence through stay, Aufenthalt. According to the interpretation described in the article, a stay in Switzerland of at least 30 days while carrying out gainful employment, or at least 90 days without gainful employment, may also be relevant.
Whose salary is generally subject to Swiss withholding tax?
For foreign employees without a C permit, such as those holding a B or L permit, the employer generally deducts withholding tax, Quellensteuer, from the salary. However, the deduction of withholding tax does not exclude the possibility that an ordinary tax assessment obligation may subsequently arise.
When is Swiss NOV mandatory?
If gross annual income reaches or exceeds CHF 120,000, subsequent ordinary tax assessment, known as NOV, is generally mandatory. A specific exception may apply in the case of employment in Genève or residency in Genève, so the general threshold alone is not sufficient in every case.
Can a voluntarily submitted NOV application be withdrawn?
According to the dossier referenced in the article, a voluntary NOV application is irrevocable. The ordinary tax assessment may exceed the withholding tax previously deducted, so the application does not necessarily result in a refund and may instead lead to an additional payment.
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