Every month, I dive into topics that connect U.S. and Hungarian taxation, sharing the latest updates, practical insights. My goal is to make cross-border tax rules a lot more understandable.
In recent years, an increasing number of U.S. citizens and dual nationals have started exploring the possibility of spending extended periods in Europe while maintaining their existing professional and financial structures in the United States. Hungary has become an increasingly attractive destination in this context due to family ties, lifestyle considerations and geographic flexibility.
At first glance, many of these relocations appear informal or temporary in nature:
- spending a few months in Hungary,
- testing a potential move,
- working remotely for a U.S. employer,
- or maintaining U.S. administrative and financial ties while abroad.
From a tax perspective, however, these “transition periods” are often far more complex than expected. This article highlights some of the key practical tax and compliance issues that frequently arise in U.S.–Hungary relocation scenarios, particularly following the termination of the U.S.–Hungary double tax treaty. The analysis is based partly on the IRS webinar “Americans Abroad: Tax Obligations, Tax Relief, and Reporting Requirements” presented by the IRS Large Business & International Division on April 21, 2026.
Worldwide Taxation Does Not End With Relocation
One of the most important starting points is that U.S. taxation generally follows citizenship rather than residence.
The IRS webinar emphasized that U.S. citizens living abroad — including dual nationals — generally remain subject to U.S. federal taxation on worldwide income unless a specific exemption or relief mechanism applies. In practical terms, this means that:
- relocating abroad does not eliminate U.S. filing obligations,
- Form 1040 filing generally continues,
- and international reporting requirements may still apply even during a temporary stay abroad.
This often surprises individuals who assume that relocating outside the United States automatically shifts their tax exposure exclusively to the foreign country.
“Temporary” Does Not Always Mean Non-Resident
One of the most common misconceptions in international relocation planning is the idea that tax residency depends exclusively on formal administrative steps or the 183-day rule. In practice, tax residency analyses are usually more nuanced.
Many jurisdictions — including Hungary — consider broader factual circumstances such as:
- the location of family life,
- habitual presence,
- schooling of children,
- or the center of personal and economic interests.
As a result, a relocation initially intended as a “trial period” may gradually evolve into a situation where the individual is treated as tax resident based on the overall factual picture. This issue has become significantly more sensitive since the termination of the U.S.–Hungary double tax treaty because traditional treaty-based residency tie-breaker protections are no longer available in the same way.
Double Taxation: Relief Exists, but Not Always Perfectly
The IRS webinar identified several mechanisms that may help mitigate double taxation:
- the Foreign Earned Income Exclusion (FEIE),
- the Foreign Tax Credit (FTC),
- and applicable bilateral tax treaties.
In the U.S.–Hungary context, however, treaty-based relief opportunities have become more limited. As a result, many cross-border taxpayers rely primarily on:
- domestic foreign tax credit mechanisms,
- and careful coordination of income sourcing and timing.
The webinar further emphasized that the FTC is designed to mitigate double taxation on foreign income, but its application is subject to limitations and category-based calculations.
In practice, this means that:
- foreign taxes are not always fully creditable,
- timing mismatches can occur,
- and certain structures may produce unexpected results.
Remote Work and Cross-Border Employment
Another increasingly common scenario involves individuals continuing U.S.-based employment while physically working from abroad.
From a practical perspective, this can raise questions around:
- local taxation,
- payroll obligations,
- social security coverage,
- and employer compliance exposure.
The IRS webinar specifically noted that U.S. citizens and residents working abroad may continue to be subject to employment taxes depending on the circumstances. Where business ownership structures or closely held companies are involved, additional complexities may arise regarding:
- management location,
- business presence,
- and the interaction between domestic tax systems.
Foreign Accounts and Reporting Obligations
Even relatively simple relocation steps — such as opening a local bank account — can trigger additional U.S. reporting obligations. According to the IRS presentation, U.S. persons with foreign financial accounts exceeding certain thresholds may be required to file FBAR reports and additional FATCA-related disclosures.
Importantly, these obligations are often informational rather than directly tax-related, yet penalties for non-compliance can be significant.
For internationally mobile families, compliance management therefore becomes just as important as the underlying tax calculation itself.
Foreign Earned Income Exclusion: Frequently Misunderstood
The webinar also discussed the requirements for claiming the Foreign Earned Income Exclusion.
To qualify, taxpayers generally must:
- maintain a foreign tax home,
- have foreign earned income,
- and satisfy either the Bona Fide Residence Test or the Physical Presence Test.
The IRS highlighted that the Physical Presence Test requires 330 full days abroad during a qualifying period.
In practice, individuals in an early-stage relocation or “transition year” may not yet satisfy these requirements, meaning that FEIE planning is not always immediately available.
Timing Often Matters More Than Tax Rates
In many cross-border relocation scenarios, the most important planning factor is not necessarily the nominal tax rate itself, but rather:
- timing,
- residency status,
- and the characterization of income.
Questions such as:
- when income is realized,
- where business activities are managed,
- how long an individual remains physically present in a country,
- and whether family life has effectively shifted abroad can materially change the tax outcome.
For this reason, relocation planning is often less about “avoiding tax” and more about ensuring that evolving factual circumstances do not unintentionally create broader tax exposure or reporting obligations than originally anticipated.
Conclusion
International relocation between the United States and Hungary has become significantly more complex in the post-treaty environment. For U.S. citizens and dual nationals, worldwide taxation, international reporting obligations and cross-border compliance continue to apply even during periods that may initially appear temporary or informal. As the IRS webinar emphasized, modern international tax compliance increasingly requires coordination between multiple reporting systems, residency analyses and foreign tax relief mechanisms. In practice, the most effective planning usually occurs before relocation patterns and tax residency positions become fully established.
The information provided in this article is for informational purposes only and does not constitute tax or legal advice.