Polish Citizenship by Descent: A Practical Guide for 2026

Interest in citizenship by descent is growing across the world. Increasing numbers of people are exploring whether they may be entitled to a second passport through their parents, grandparents or even more distant ancestors born in another part of the world.

This trend is hardly surprising. In an increasingly globalized world, many people place greater value on understanding their origins and preserving a connection with their heritage. At the same time, online genealogical databases and digitized historical records have made it easier than ever to uncover ancestral ties.

There is also a practical dimension. Brexit, the COVID-19 pandemic and growing geopolitical uncertainty have encouraged many individuals and families to think carefully about their future options and value the greater mobility and reassurance that comes with dual citizenship.

Among the various citizenship-by-descent programs attracting attention today, Poland occupies a particularly interesting position. Polish citizenship combines the benefits of European Union citizenship and a globally recognized passport with a legal framework that remains comparatively favorable to descendants of former Polish citizens. While citizenship laws in many countries have become more restrictive in recent years, the current Polish framework still creates opportunities for many individuals whose connection to Poland dates back several generations.

At the same time, prospective applicants increasingly want to understand not only the benefits of Polish citizenship, but also its practical consequences, including matters such as military service and taxation. Once these questions have been considered, a more fundamental issue remains: does a person qualify for Polish citizenship?

Many are surprised to learn that the answer to this seemingly simple question is often far from straightforward.

Who Is Eligible for Polish Citizenship by Descent?

The fundamental rules have remained largely unchanged for many years. The procedure does not grant a new citizenship but confirms that the applicant has held Polish citizenship since birth by operation of law.

Importantly, applicants are not required to demonstrate:

• • • Knowledge of the Polish language or culture
    • Residence in Poland
    • Investment, employment or business ties with Poland

Instead, they must establish that an ancestor was a Polish citizen and that citizenship was transmitted through an uninterrupted family line. Unlike some citizenship-by-descent frameworks, Polish law does not impose a fixed generational limit.

A claim may therefore be based on a parent, grandparent, great-grandparent or a more distant ancestor, and many successful cases involve family histories extending back more than a century.

Benefits of Polish Citizenship and a Polish Passport

For many people of Polish heritage, obtaining confirmation of Polish citizenship and a Polish passport is both a meaningful personal milestone and a practical tool that provides access to the rights associated with European citizenship.

Formal recognition of citizenship allows descendants of Polish emigrants to preserve a legal connection with Poland while contributing their own family story to a modern and diverse Polish community.

In addition to its emotional significance, Polish citizenship offers substantial practical advantages, particularly because Poland is a member of the European Union. These include:

• • • The right to live, work and conduct business in Poland and across the European Union, subject to the rules applicable to EU citizens.
    • Freedom of movement within the Schengen Area, without the restrictions that apply to many non-EU nationals.
    • The ability to acquire property in Poland without permit requirements applicable to certain foreign nationals.
    • Access to public education in Poland and educational opportunities in other EU Member States, subject to local rules.
    • The right to vote and stand in Polish parliamentary and presidential elections.

These rights have become more valuable as careers, education and family life increasingly extend across borders. A Polish passport can provide a durable legal basis for future choices, even where the holder has no immediate plan to relocate.

At the same time, Polish citizenship also involves certain practical considerations.

One common concern is military service. Against the backdrop of current geopolitical tensions, this issue understandably receives greater attention than it did only a few years ago. However, confirmation of Polish citizenship does not automatically mean that a person will be required to perform military service. Polish legislation specifically excludes dual nationals who live permanently outside Poland from the defense obligation.

Tax questions are also more prominent than in the past, leading some people to assume that obtaining Polish citizenship automatically triggers Polish taxation. That assumption is generally incorrect. Polish tax liability generally follows tax residence, not citizenship. Confirmation of Polish citizenship does not, by itself, make a person a Polish tax resident or subject all of their income to Polish tax.

The overall balance is therefore compelling: Polish citizenship offers substantial rights, while the potential consequences are usually limited.

Why Proving Polish Citizenship by Descent Can Be Complicated

The apparent simplicity of the core principle can be misleading. Whether an ancestor acquired, retained and transmitted Polish citizenship depends on a sequence of historical rules contained in several legal acts and, in some cases, international agreements.

Many citizenship-by-descent cases are governed by the Act on the Citizenship of the Polish State, which entered into force on 31 January 1920. Under that Act, Polish citizenship was generally acquired by persons who had been born in territories incorporated into the re-established Polish State or who had permanent residence in Poland when the Act entered into force. The citizenship status of some individuals was also affected by international agreements, such as the Treaty of Riga of 1921, which regulated citizenship issues following territorial changes between Poland and Soviet Russia.

Historical citizenship rules contain many complexities that are not immediately obvious from a modern perspective. For example, under the 1920 Act, a child born in marriage generally acquired the father's citizenship, while a child born outside marriage generally acquired the mother's citizenship. Also, citizenship could historically be lost in circumstances such as acquiring a foreign citizenship, entering foreign military service or accepting a public office abroad.

As a result, events that may appear legally irrelevant today can determine the outcome of a citizenship claim many decades later.

Example: How Historical Events Can Affect Polish Citizenship by Descent

The following example illustrates the legal complexities governing the acquisition and loss of Polish citizenship.

Józef was born in Lviv in 1912 (which was then part of Poland) and emigrated to the United States in 1937. During World War II, he served in the U.S. Army. A few years later, in 1947, he became a naturalized American citizen and married Emma, a U.S. citizen. Their daughter Barbara was born in the United States in 1950 and acquired U.S. citizenship by birth.

At first glance, it appears that Barbara could not have acquired Polish citizenship. Before her birth, Józef had left Poland, served in a foreign military and naturalized as a U.S. citizen. Barbara also acquired U.S. citizenship when she was born.

Yet a careful legal analysis can lead to the opposite conclusion.

Józef's emigration alone did not result in the loss of his Polish citizenship. Leaving Poland permanently was not enough to sever the legal bond with the Polish State. Likewise, although service in a foreign military could in principle result in the loss of citizenship, Polish case law recognizes an important exemption for service in the armed forces of the Allied powers during the Second World War. Consequently, Józef's wartime service in the U.S. Army did not result in the loss of his Polish citizenship.

His naturalization as a U.S. citizen in 1947 does not necessarily change the picture either. Under the Polish legislation then in force, important exceptions applied to men who remained subject to Polish military-service obligations. If Józef was not officially exempt from military service in Poland at the time of his U.S. naturalization in 1947, then the U.S. naturalization was deemed ineffective under Polish law - accordingly, it did not prevent him from retaining and transmitting Polish citizenship.

Finally, Barbara's acquisition of U.S. citizenship at birth does not automatically mean that she lost Polish citizenship. Under established interpretations of the pre-1951 legislation, a person had to hold Polish citizenship before acquiring a foreign citizenship for the latter event to trigger a loss. Since Barbara acquired Polish and U.S. citizenship simultaneously at birth, the acquisition of U.S. citizenship did not cause her to lose Polish citizenship.

Family stories and assumptions rarely provide the complete answer. Emigration, military service, naturalization and even the circumstances of a person's birth may all be relevant, but only in the context of the specific legislation that applied at the relevant moment in history. Determining whether Polish citizenship was transmitted through a family line therefore often requires a detailed analysis of both the historical facts and the legal rules that were in force at each stage of the family's history.

How to Apply for Polish Citizenship by Descent in 2026

Determining whether a person acquired and retained Polish citizenship is only part of the picture. Even where the legal analysis leads to the conclusion that Polish citizenship has been transmitted through a family line, that status must still be formally confirmed through an administrative procedure before the individual can obtain a Polish passport or other Polish identity documents.

In principle, the procedure in 2026 follows the same structure as in previous years, although administrative practice continues to evolve.

To obtain official confirmation of Polish citizenship, an application must be submitted to the competent authority. Applicants living outside Poland may apply through the relevant Polish consulate or through a representative in Poland. For applicants residing abroad, citizenship confirmation cases are examined by the Mazovian Voivode in Warsaw.

The application must describe the applicant's family history and be supported by documentary evidence. In many cases, gathering the required documents is the most demanding part of the process. Historical records may be incomplete, difficult to access or scattered across multiple jurisdictions, often requiring extensive archival research in Poland and abroad. Authorities have also become more rigorous in their approach to evidence, requiring applicants to substantiate facts that in the past might have received less scrutiny.

Once the application has been submitted, applicants should also be prepared for lengthy processing times. Citizenship confirmation cases may take up to two years to reach a decision, considerably longer than was common only a few years ago.

If citizenship is confirmed, one further minor formality remains: foreign civil-status documents must be registered with the Polish Civil Registry.

For many descendants of Polish emigrants, determining eligibility by descent begins with a simple family story. Turning that story into a successful citizenship application, however, often requires a detailed analysis of historical records, citizenship legislation and events that occurred across multiple generations. Understanding those issues at an early stage can help individuals assess both their prospects of success and the evidence they may need to gather. 

How Fragomen can help

Whether your family story begins in Warsaw, Lviv, Vilnius, or a small village that no longer appears on modern maps, Fragomen’s team can help trace the legal path to Polish citizenship. We support clients at every stage of the process, from assessing eligibility and locating historical records to preparing the application, securing a citizenship decision and obtaining Polish passports and identity documents. Drawing on extensive experience with complex cross-border matters, we help turn family history into a documented legal claim.

Need To Know More?

For more information about immigration and citizenship services in Poland, visit Fragomen’s services page and contact Poland Immigration Strategy Director Tomasz Rogala at [email protected] or Senior Associate Tomasz Rdzanek at [email protected].

This blog was published on 15 September 2026, and due to the circumstances, there are frequent changes. To keep up to date with all the latest updates on global immigration, please subscribe to our alerts and follow us on LinkedIn, Facebook and Instagram.