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The real cost of guest workers in Hungary: hidden tax traps many companies miss
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As multinational companies expand their Hungarian operations, intra-corporate transfers (ICTs) — bringing in Chinese, Vietnamese, Korean, or Mexican colleagues to work at local subsidiaries — have become increasingly common. But what looks like a routine HR move often masks a complex web of tax, social security, and administrative obligations that many organisations are unprepared for.
According to KPMG Hungary, the stakes are high: mistakes can trigger audits by Hungary’s National Tax and Customs Administration (NAV), retroactive payment obligations, and significant fines.
The ICT arrangement — and where it gets complicated
Under an ICT (Intra-Corporate Transfer) permit, the employee officially remains on the payroll of the foreign parent company. The Hungarian subsidiary cannot pay them a base salary directly — only specific allowances, such as housing support. However, once the employee spends more than 183 days per year in Hungary, or the Hungarian entity is deemed their economic employer (both conditions typically apply in long-term postings), the foreign-sourced salary becomes subject to Hungarian personal income tax.
On top of that, Hungarian social security contributions may also be due. If no valid bilateral social security agreement exists with the sending country, or if the posting exceeds two years, the employee enters the Hungarian social insurance system and contributions must be paid — typically by the foreign employer. If the foreign employer fails to comply, however, the liability falls on the individual employee.
Where a bilateral agreement does exist, the employee can be exempted from Hungarian social security by presenting a certificate of coverage issued by the sending country. This certificate must be submitted to the Hungarian authorities and formally registered — without it, Hungarian social insurance status is established automatically.
Four costly mistakes companies repeatedly make
Even when the rules are clear, many companies end up facing the same recurring problems — ones that frequently surface during NAV audits and result in retroactive tax, social security, and administrative disputes.
Wrong tax residency assessment
Companies fail to keep travel logs, neglect to obtain tax residency certificates, or end up in situations where income is taxed in two countries simultaneously — leading to double taxation that could have been avoided.
Social security registration overlooked
Contributions are only paid in the employee’s home country, while Hungarian law required them from the very first day of the posting.
Missing or late filings
Mandatory monthly and annual declarations are submitted late or not at all, resulting in penalties and late interest charges.
Incorrect employment status classification
ICT-permit holders cannot have a Hungarian employment contract, and the Hungarian host entity cannot pay them a Hungarian salary. Misclassifying their status creates legal and financial exposure for both parties.
A recurring pattern, KPMG notes, is that payroll and HR departments simply pass the issue along because “the salary comes from abroad” — leaving obligations unmet until an audit surfaces them.
A critical distinction: Hungary has no “shadow payroll”
One detail that catches many multinationals off guard: Hungary does not recognise the concept of shadow payroll. This means that for benefits and salary paid by the foreign parent, neither income tax nor social security contributions can be withheld through the standard Hungarian payroll process. Special procedural rules must be applied separately — and relying on routine bérszámfejtés (payroll processing) to cover these obligations is not sufficient.
What companies should do before and during a posting
KPMG outlines a set of steps that, if followed consistently, can prevent the most common compliance failures.
Identify and review all ICT-permit employees
Establish which country each employee is insured in and how long their posting will last.
Check for bilateral social security agreements
If an agreement exists between Hungary and the sending country, obtain and formally register the certificate of coverage issued by the sending country’s authorities.
Complete all mandatory Hungarian filings on time
This includes registration, monthly social security declarations, and annual tax returns. Failures here primarily affect the individual employee and the receiving Hungarian entity.
Monitor the posting on an ongoing basis
Keep track of how long the assignment has been running, and ensure that all contracts and certificates remain current as circumstances evolve.
When in doubt, consult a specialist
Hungarian regulations in this area are continuously evolving and expectations are tightening. Employing staff under ICT permits — currently most commonly from China, South Korea, and Vietnam — offers real business advantages, but it also carries significant administrative and financial risk if managed incorrectly.
KPMG recommends that companies consult advisors with expertise across tax, social security, and immigration law before initiating any transfer or posting. Successful, risk-free cooperation requires deliberate planning, current knowledge, and thorough preparation — not just standard HR or payroll routine.
This article is based on analysis by KPMG Hungary. KPMG provides audit, tax, and advisory services to Hungarian and multinational companies, and operates in 138 countries with over 276,000 employees globally.
Frequently asked questions – The taxes and guest workers in Hungary
Does a foreign employee working in Hungary have to pay Hungarian income tax?
Yes, in most long-term posting situations. Once the employee spends more than 183 days per year in Hungary, or the Hungarian subsidiary is considered their economic employer, their salary — even if paid from abroad — becomes subject to Hungarian personal income tax. A double taxation treaty between Hungary and the sending country may provide some relief, but it does not eliminate the obligation to file and pay in Hungary.
Who is responsible for paying social security contributions in Hungary?
If no valid bilateral social security agreement exists between Hungary and the sending country, or if the posting exceeds two years, the employee enters the Hungarian social insurance system. In that case, contributions must be declared and paid by the foreign employer. If the foreign employer fails to do so, the liability shifts to the individual employee.
What is the certificate of coverage, and why does it matter?
If a bilateral social security agreement exists between Hungary and the sending country, the employee can be exempted from Hungarian social insurance — but only if a certificate of coverage issued by the sending country’s authorities is submitted to Hungarian authorities and formally registered. Without this document, Hungarian social insurance status is established automatically, even if contributions are already being paid abroad.
Can the Hungarian subsidiary pay a salary to an ICT-permit holder?
No. Under an ICT (Intra-Corporate Transfer) permit, the employee officially remains on the payroll of the foreign parent company. The Hungarian host entity cannot pay them a base salary or conclude a Hungarian employment contract with them. It may, however, provide certain specific allowances, such as housing support.
What happens if a company does not comply with Hungarian tax and social security rules for posted workers?
Non-compliance can lead to audits by Hungary’s National Tax and Customs Administration (NAV), retroactive tax and social security payment obligations, penalties, and late interest charges. The consequences primarily affect the individual employee and the Hungarian receiving entity. KPMG recommends consulting advisors with expertise in tax, social security, and immigration law before initiating any international posting.