Czech citizenship by declaration is not a naturalization with a language test or a residence requirement. It is a statutory route for people who lost Czechoslovak or Czech citizenship, and for their children and grandchildren, and it rests almost entirely on documents. This guide follows the Czech Embassy in Ottawa’s page, updated on 6 January 2025, and compares it with the Czech Consulate General in New York. This guide reflects official pages we checked in October 2026. Rules, fees, forms and waiting times change and differ between embassies, so confirm every detail with the embassy or consulate that will receive your application.
Who can declare
| Section | Who | Notes from the embassy |
|---|---|---|
| 31(1) | A former Czech or Czechoslovak citizen who lost citizenship before 1 January 2014 | Subject to the exclusions below |
| 31(3) | An adult whose at least one parent or grandparent is or was such a former citizen | The applicant must not be a citizen of the Slovak Republic on the date of the declaration |
| 31(5) | A minor child of such a person, by declaration of the parents | Both parents must be present, or their signatures verified, for a child under 15, and the child as well for ages 15 to 18 |
The exclusions
The Ottawa embassy lists these conditions that exclude a declaration under Section 31(1), and asks you to check that none applies to you:
- On the basis of the Constitutional Decree of the President of the Republic on the regulation of Czechoslovak citizenship of persons of German or Hungarian nationality.
- On the basis of the agreement between Czechoslovakia and the Soviet Union on Transcarpathian Ukraine.
- If he or she was a Czechoslovak citizen who became or would have become a citizen of the Slovak Socialist Republic on 1 January 1969.
- If after 1 January 1969 he or she acquired citizenship of the Slovak Socialist Republic or the Slovak Republic and still holds it.
The embassy asks you to verify that you meet these conditions. It adds some general rules: a person born in the territory of the Slovak Republic before 1953 and his or her direct descendants might be or should be considered Slovak citizens, and as a rule only people from Carpathian Ruthenia who resided in the Czech Republic after 1945 might be eligible. See our guide to choosing a route.
Where and how to apply
- At an embassy or consulate. The declaration is accepted at a Czech mission, which forwards it, with the documents, to the competent regional authority or ministry within 30 days, according to an older Los Angeles page.
- In person or by mail, depending on the mission. Ottawa accepts applications in person by appointment or by mail, with the signature verified by a Czech honorary consulate, while the New York Consulate General says the declaration must be made in person and cannot be mailed.
- The deciding authority. It is the regional authority for the applicant’s last place of residence in the Czech Republic, or the Municipal Office in Prague 1 if the applicant never lived there.
- Language. Ottawa says forms must be filled out correctly and legibly in Czech.
What happens after you submit
- The mission checks the file for completeness. The Ottawa embassy says that if forms and supporting documents are incomplete, processing will not begin.
- The mission forwards it to the Czech authority that decides.
- The authority verifies the conditions. If they are not met, it decides that the declarant did not acquire citizenship, according to the Los Angeles page.
- If they are met, you receive a certificate of acquisition of Czech citizenship (Listina o nabytí státního občanství České republiky), and you become a citizen on the day you receive it.
- Afterward you can register your birth and marriage in the Czech Republic and apply for a Czech passport.
Timing
The New York Consulate General says processing takes approximately 3 to 6 months from the time the complete application is sent to the Czech Republic, and that it may be longer if archival research is required. The Ottawa embassy says that for persons who left Czechoslovakia before 1953, the application requires comprehensive research in Czech archives, with a minimum of six months of fieldwork in addition to the routine procedure, and that for such people it is not possible to reliably predict the result. It adds that there is no time limit to submit the declaration, so you can take time to assemble a complete file.
Fees
The application is subject to a consular fee, which the New York Consulate General identifies as item 159b of the fee schedule and says varies each month with the exchange rate. We did not verify the current amount, so check your embassy’s fee page. Budget separately for certificates, apostilles and translations.
What the embassy will not do
- Decide your eligibility. The Ottawa embassy says it is not authorized to draw final conclusions and each case must be examined by competent authorities in the Czech Republic.
- Fill in your forms. A consular officer may answer questions but cannot fill out the forms for you.
- Translate for you. Documents must be translated into Czech by a translator, and the embassy lists translators.
- Accept plain photocopies. Documents must be originals or officially verified copies.
Consider professional help
The Ottawa embassy suggests consulting a lawyer in the Czech Republic or a person experienced in administrative proceedings, because the agenda is very complex and multidimensional. A lawyer or a licensed researcher can be especially useful if your ancestor left before 1953. See our document guide.
Illustrative composite (not a real family): A reader whose grandmother was born in Moravia and naturalized in the United States in the 1950s has her grandmother’s naturalization certificate, which documents the date and basis of loss. She assembles her own birth certificate, her parent’s records and a family tree, makes an appointment at the consulate and submits the declaration, and then waits for the Czech authority’s decision.
Common mistakes
- Not checking the exclusions. The decree and treaty cases are excluded.
- Overlooking Slovak citizenship. The route is closed to Slovak citizens.
- Sending photocopies. Originals or verified copies are required.
- Assuming mail is allowed. It depends on the mission.
- Skipping the family tree form. Section 31(3) applicants must provide one.
Continue with the complete guide and the document guide, and browse Czech & Slovak Citizenship by Descent. Sources: the Czech Embassy in Ottawa (updated 6 January 2025), the Czech Consulate General in New York, an older page of the Czech Consulate in Los Angeles and the Czech embassy’s guide to Czech citizenship in 1918 to 1949.
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