New GFR methodology on determining tax residency: Key changes

The full text of the guidance is available on the Financial Administration website. It provides a detailed interpretation of the individual criteria for determining tax residency, includes practical examples, and harmonizes the tax authority's approach to assessing cross-border situations.

Strict two-step algorithm

Determining tax residency cannot be simplified, and tax authorities must strictly adhere to the following sequence:

Step 1 (Domestic Law): First, Czech criteria under the Income Tax Act (ITA) must be evaluated—namely, a permanent home (residence) and habitual abode in the Czech Republic (both criteria are equal and applied simultaneously).
Step 2 (Double Taxation Treaties): Double taxation treaties (DTTs) and their tie-breaker rules are accessed exclusively if both countries consider the taxpayer to be their resident under their domestic laws. Without a domestic conflict, the tax treaty cannot be used to determine residency at all.

Hotel or Airbnb as a permanent home

The ITA defines a residence as a permanent home available under circumstances that indicate an intention to reside there permanently. The GFR now clarifies that under certain conditions, a hotel, hostel, or short-term accommodation via platforms such as Airbnb or Booking.com can also qualify as a permanent home:

Upon Arrival in the CZ: If a cross-border employee bridges the period before finding suitable long-term housing by staying in a hotel or Airbnb, this accommodation meets the criteria of a permanent home, and the individual becomes a Czech tax resident from day one.
Upon Departure from the CZ: If a taxpayer has already terminated their standard lease but their departure is delayed for any reason and they spend this interim period in a hotel, their residence (and thus tax residency) still continues for tax purposes.

Timing of relocation and pitfalls of split residency

The methodology describes in detail the emergence of so-called split tax residency, where a taxpayer is subject to worldwide income taxation in the CZ for only a part of the year. When planning an international relocation, however, close attention must be paid to how domestic tests operate:

The permanent home criterion begins and ends on a specific day, which allows residency to be split during the calendar year.
The habitual abode criterion (the 183-day test), however, operates retrospectively for the entire tax period. If you spend more than 183 days in the CZ within a calendar year, you become a Czech tax resident retroactively from January 1. This significantly complicates situations involving relocations from countries with a non-calendar tax year (e.g., India with a fiscal year from April 1 to March 31).

Students and patients beware

The statutory tax non-residency of students and individuals undergoing medical treatment in the CZ automatically drops the moment these individuals begin engaging in gainful activity (employment or business) in the country. In such cases, the standard criteria for establishing Czech tax residency under the ITA begin to apply.

Foreign domicile is not an absolute shield

The burden of proof lies fully on the taxpayer (proven by lease agreements, flight tickets, bank statements, or personal logs). The GFR explicitly warns that the Czech tax authority does not have to automatically accept a foreign tax domicile certificate. If the authority has doubts about its authenticity or discovers facts that the foreign tax administration did not take into account (such as the actual center of vital interests of the family), it can challenge the validity of the foreign certificate.

Determining tax residency requires a detailed analysis of timelines, family ties, and economic activities in both affected states. If you are dealing with cross-border employee mobility or business relocation, we would be happy to consult on your specific tax setup.