CZ · Citizenship by descent

Czech citizenship by descent

Reaches a grandparent. Every answer on this page is what Postern’s rulebook returns, word for word, with the law it cites. The free check runs the same rules.

Last verified 25 September 202610 sourcesNot legal advice

CZ · PARENTLIKELYThrough a parentCitizen by descent or declarationCZ · GRANDPARENTPOSSIBLEThrough a grandparentDeclaration (§31)CZ · GREAT-GRANDPARENTUNLIKELYThrough a great-grandparentDeclaration (§31)
Routes
Citizen by descent (§4) · Declaration by former citizens and their descendants (§31)
Dual citizenship
Kept on every open route
Comes with
EU citizenship: the right to live and work in 27 countries

The stamps assume no one in the line became a citizen of another country before the next person in the line was born. What changes each answer is below.

On this page
  1. 01Who qualifies
  2. 02Dates that matter
  3. 03Mothers’ lines
  4. 04Keeping your citizenship
  5. 05The routes and the law
  6. 06The documents
  7. 07What it takes
  8. 08Where the records live
  9. 09Former places
  10. 10Law changes
  11. 11Other doors
  12. 12Sources

01Who qualifies

Who qualifies, generation by generation

LIKELY

Can you claim Czech citizenship through a parent?

Citizen by descent or declaration

A child of a Czech citizen is Czech by birth; a child of someone who lost Czechoslovak citizenship before 2014 can acquire it by declaration. Either way, you keep your other citizenship.

What changes the answer

  • UNLIKELY
    If your ancestor left Czechia before 1918Declaration (§31)

    An ancestor who left before 1918 was an Austrian subject, not a Czechoslovak citizen, and the declaration route runs through people who held and lost Czechoslovak citizenship.

POSSIBLE

Can you claim Czech citizenship through a grandparent?

Declaration (§31)

Grandchildren of former Czechoslovak citizens who lost citizenship before 2014 can acquire it by declaration; the ministry's practice on how the loss occurred decides the case.

What would settle itHow your grandparent lost Czechoslovak citizenship, and when.

What changes the answer

  • UNLIKELY
    If your ancestor left Czechia before 1918

    An ancestor who left before 1918 was an Austrian subject, not a Czechoslovak citizen, and the declaration route runs through people who held and lost Czechoslovak citizenship.

UNLIKELY

Can you claim Czech citizenship through a great-grandparent?

Declaration (§31)

The declaration reaches children and grandchildren of former citizens, not great-grandchildren. A bill to extend it to a fourth generation lapsed with the parliament's term in October 2025 and had not been refiled by September 2026. If your grandparent qualifies and declares first, the line reopens for you.

What would settle itWhether a living grandparent or parent can make the declaration first.

What changes the answer

  • UNLIKELY
    If your ancestor left Czechia before 1918

    An ancestor who left before 1918 was an Austrian subject, not a Czechoslovak citizen, and the declaration route runs through people who held and lost Czechoslovak citizenship.

02Dates that matter

The dates that matter

  1. 2014
    1 January 2014

    Children of former Czech or Czechoslovak citizens who lost citizenship before 1 January 2014 may acquire it by declaration. Act No. 186/2013 on Citizenship of the Czech Republic, §31 (declaration by former citizens and their descendants) and §4, §31(1) and (3)

  2. 2014
    1 January 2014

    The declaration is open to former Czechoslovak or Czech citizens who lost citizenship before 1 January 2014, and to their children and grandchildren. Act No. 186/2013 on Citizenship of the Czech Republic, §31 (declaration by former citizens and their descendants) and §4, §31

  3. 2014
    1 January 2014

    Any loss before 1 January 2014 qualifies (release, naturalization abroad, emigration), except loss under the 1945 decree on persons of German and Hungarian nationality or the Subcarpathian Ukraine treaty; a declarant who is currently a Slovak citizen is excluded. Act No. 186/2013 on Citizenship of the Czech Republic, §31 (declaration by former citizens and their descendants) and §4, §31(1) and (3)

  4. 2014
  5. 2015

    A grandparent who never lost citizenship is not a former citizen, so the declaration is not open through them; the Prague Municipal Court dismissed such a claim where the grandfather kept Czechoslovak citizenship and the father became Czech only in 2015. Municipal Court in Prague, judgment 18 A 53/2021

03Mothers’ lines

How mothers’ lines were treated

Czechia’s rule gives the same answer whether the line runs through a mother or a father. Where its reasons speak of mothers or fathers, they say:

  • A grandparent who never lost citizenship is not a former citizen, so the declaration is not open through them; the Prague Municipal Court dismissed such a claim where the grandfather kept Czechoslovak citizenship and the father became Czech only in 2015. Municipal Court in Prague, judgment 18 A 53/2021

04Keeping your citizenship

Dual citizenship with your home country

You keep your citizenship.

On every open route, the rule lets a citizen of the United States, Canada, the United Kingdom, Australia, New Zealand, Brazil, Argentina or South Africa keep that citizenship.

05The routes

Every route, and the law behind it

Citizen by descent or declaration

Open through a parent

  • LIKELY
    Through a parent

The law

Declaration (§31)

Open through a grandparent

  • POSSIBLE
    Through a grandparent

The law

What would settle an unsure case

  • Whether a closer relative held Czechoslovak citizenship after 1918 and lost it by emigrating; that person may be your qualifying ancestor.
  • How your grandparent lost Czechoslovak citizenship, and when.
  • Whether a living grandparent or parent can make the declaration first.

06The documents

The documents, as the rule lists them

Citizen by descent or declaration

Through a parent

  • Your parent's Czech or Czechoslovak citizenship record
  • Your birth certificate
  • Your parents' marriage certificate

Declaration (§31)

Through a grandparent

  • Your grandparent's Czechoslovak citizenship record
  • Evidence of how and when they lost it (naturalization record, emigration file)
  • Birth and marriage records for each generation to you

Most countries also want proof that no one in the line became a citizen elsewhere before the next birth: the naturalization record with its date, or a letter that none exists.

07What it takes

What it takes: time, cost, the hard part, who decides

Citizen by descent or declaration

Time
3–8 months for straightforward cases, up to 12 for complex ones.
Cost
About $300–600: the declaration fee itself is CZK 2,000 (~$85) for adults; the rest is apostilles and translations into Czech.
The hard part
Showing your parent was a Czech (or Czechoslovak) citizen at your birth.
Who decides
The Czech consulate for your address.
The first record
Your parent’s Czech birth record, from The matriční úřad (registry office) of their birthplace. Write with the name and date; expect a few weeks. mzv.gov.cz

How it’s filed

Where
In person at the Czech mission for your U.S. state: Embassy Washington (AL, AR, DC, FL, GA, KY, LA, MD, MS, NC, OH, OK, SC, TN, TX, VA, WV, PR); Consulate General New York (CT, DE, ME, MA, NH, NJ, NY, PA, RI, VT); Chicago (IL, IN, IA, KS, MI, MN, MO, NE, ND, SD, WI); Los Angeles (AK, AZ, CA, CO, HI, ID, MT, NV, NM, OR, UT, WA, WY and Pacific territories) office list
How
In person; you appear in person
Appointments
Email to the consulate for an appointment (e.g. losangeles.consulate@mzv.gov.cz). Los Angeles takes citizenship appointments by email only.
Fee
About $47
Decision
2–12 months
What goes in the file (8)
  1. Completed form in Czech (the English guide is for reference only)
  2. Valid passport or ID
  3. Your birth certificate, apostilled, with Czech court-interpreter translation
  4. Your marriage, partnership or divorce documents, apostilled and translated
  5. Your parents' birth and marriage certificates
  6. The parent's Czech/Czechoslovak birth record or proof of citizenship
  7. For a declaration: proof of the date and legal basis of the parent's loss of citizenship (original U.S. naturalisation certificate, or a Czechoslovak release document)
  8. Completed personal data form (Osobní údaje)
What goes wrong (6)
  • Fees at the consulate (August 2026 table): §31 declaration 1,000 CZK ($47); citizenship certificate 600 CZK ($28). USD amounts are reset monthly from the koruna rate.
  • Citizenship by declaration is acquired on the day you receive the certificate of acquisition; outside Czechia you sign a confirmation of receipt at the consulate, without which the procedure is not complete.
  • The declaration is forwarded within 30 days to the regional authority for your last Czech residence, or to the Municipal Authority of Prague 1 if you never lived in Czechia.
  • Not open to current Slovak citizens, or where the parent lost citizenship under the 1945 decrees on German/Hungarian nationality, the 1946 Transcarpathia treaty, or became Slovak in 1969.
  • The Los Angeles page words the rule as a parent or grandparent who lost Czech or Czechoslovak citizenship 'by 31 December 2013'.
  • The certificate of acquisition is valid for a passport application for one year from receipt.

Checked 25 September 2026 · source ↗

Declaration (§31)

Time
9–18 months.
Cost
About $400–800 in fees, apostilles and translations.
The hard part
Proving your parent or grandparent was a Czechoslovak citizen who lost it, typically on emigrating. Archive-heavy cases can need six months of fieldwork on top of standard processing.
Who decides
The Czech consulate for your address.
The first record
Your ancestor’s Czech birth record, from The registry office of their birthplace, or the regional archive. Write with the name and approximate date. mzv.gov.cz

How it’s filed

Where
In person at the Czech mission for your U.S. state: Embassy Washington (AL, AR, DC, FL, GA, KY, LA, MD, MS, NC, OH, OK, SC, TN, TX, VA, WV, PR); Consulate General New York (CT, DE, ME, MA, NH, NJ, NY, PA, RI, VT); Chicago (IL, IN, IA, KS, MI, MN, MO, NE, ND, SD, WI); Los Angeles (AK, AZ, CA, CO, HI, ID, MT, NV, NM, OR, UT, WA, WY and Pacific territories) office list
How
In person; you appear in person
Fee
About $47
Decision
3–18 months
What goes in the file (9)
  1. Completed §31(3) declaration in Czech
  2. Completed personal data form (Osobní údaje)
  3. Valid passport or ID
  4. Your birth certificate, apostilled and translated into Czech
  5. Your marriage, partnership, divorce or spouse's death documents, apostilled and translated
  6. Your parents' birth and marriage (or divorce/death) certificates
  7. Your grandparents' birth and marriage (or divorce/death) certificates
  8. Proof of the date and legal basis on which the parent or grandparent lost Czechoslovak citizenship (original U.S. naturalisation certificate or Czechoslovak release document)
  9. For a child: the child's birth certificate and the other parent's notarised consent; a child over 15 also consents
What goes wrong (4)
  • The consulate does no archival research; missing Czech records must be ordered first (duplicates via the consulate, or the regional archive).
  • Citizenship is acquired when the certificate of acquisition is received; then register your U.S. birth (and marriage) in the Special Registry in Brno (200 CZK / $9 at the consulate) before applying for a passport, within a year.
  • Reaches children and grandchildren only; a great-grandchild qualifies only after the grandparent or parent declares first. A fourth-generation extension had not been re-filed by September 2026.
  • From CA/GB/AU/NZ/BR/AR/ZA: declare at the Czech mission for your residence; that mission's fee table applies; non-English documents still need a Czech court-interpreter translation.

Checked 25 September 2026 · source ↗

Estimates are honest ranges from official fee tables and what families report; where a fee or time could not be confirmed, it says so.

08Where the records live

Where each record lives, and how to ask for it

  • birth1926–2026

    The matriční úřad (registry office) of the municipality: birth registers protected and kept 100 years, marriages 75, deaths 30

    The registry office for the town of birth; the consulate can request a duplicate Czech certificate (birth, marriage, death) from Czechia for you.

    Ask
    By post, in Czech
    Fee
    600 CZK (about $28)
    Takes
    4–17 weeks
    Good to know (3)
    • Corrected 2026-09-25: this was recorded as an 'in-person' request, which a U.S.-resident family cannot do directly at a Czech matriční úřad. The realistic channel is a letter by post to the registry office, or a proxy request routed through the consulate.
    • Through a U.S. consulate: issuance of a copy of a Czech birth, marriage or death certificate is item 153a, 600 CZK ($28 at the August 2026 rate).
    • Writing directly to the registry office in Czech also works; the domestic fee is set by the registry and was not verified.

    Checked 25 September 2026 · source ↗

  • birth1784–1925

    The State Regional Archives (Státní oblastní archiv, SOA) for the region: parish registers (which served as the civil register in the Czech lands until 1950) and civil registers older than the protection periods

    Identify the parish for the village, then the SOA for today's region (Prague, Třeboň, Plzeň, Litoměřice, Zámrsk/Hradec Králové, Opava, Brno). Most SOAs publish scanned registers free in their own online viewers.

    Ask
    By post, in Czech
    Takes
    4–17 weeks
    Good to know (3)
    • Archives do not research family trees or read old registers for you; they issue copies and extracts under their price lists once you give the exact register.
    • Copies are sent after an invoice is paid; SOA Hradec Králové warns this is slower than an online shop.
    • Registers are in Latin, German or Czech depending on era and parish.

    Checked 25 September 2026 · source ↗

  • marriage1951–2026

    The registry office of the place of marriage (marriage registers kept 75 years)

    Ask
    In person, in Czech
    Fee
    600 CZK (about $28)
    Takes
    4–17 weeks

    Checked 25 September 2026 · source ↗

  • citizenship

    Evidence of how and when the parent or grandparent lost Czechoslovak citizenship: usually the U.S. naturalisation certificate, or a Czechoslovak release document (listina / osvědčení o propuštění ze státního svazku)

    Ask
    By post, in English · request page ↗
    Takes
    2–12 months
    Good to know (1)
    • The consulate asks for the original U.S. naturalisation certificate; no apostille or translation is needed for it. If lost, apply to USCIS for a replacement or use the Genealogy Program.

    Checked 25 September 2026 · source ↗

Translations

Into
Czech
Who may translate
A sworn translator in the country
About
$30–$80 a page

Documents not issued by Czech or Czechoslovak authorities must be apostilled and translated into Czech by a court interpreter registered with the Czech Ministry of Justice; Slovak documents need no translation. The consulate verifies translations for the Special Registry in Brno at 300 CZK ($14) a page. Per-page translator prices are an estimate.

Checked 25 September 2026 · source ↗

The passport

Where
In person at the Czech mission for your U.S. state, after your birth is registered in the Special Registry in Brno
Fee
About $114
Time
4–17 weeks

Checked 25 September 2026 · source ↗

09Former places

Places on old papers that lead to Czechia

If your family’s records name one of these, Czechia’s law may be the one that applies. The town decides.

  • Austria-Hungary · also Austro-Hungarian Empire, Habsburg

    Austria-Hungary became a dozen countries in 1918. Pick the one the town is in today.

    Today: Austria, Hungary, Czechia, Slovakia, Croatia, Slovenia, Bosnia and Herzegovina, Romania, Ukraine, Poland, Italy, Serbia

  • Czechoslovakia

    Czechoslovakia became Czechia and Slovakia in 1993; both count the old citizenship.

    Today: Czechia, Slovakia

  • Bohemia · also Moravia

    Bohemia and Moravia are Czechia.

  • Silesia · also Schlesien

    Mostly Poland today; the town decides.

    Today: Poland, Czechia, Germany

  • Sudetenland

    Czechia today; Germany has a route for some families.

    Today: Czechia, Germany

  • Czech Republic

10Law changes

Recent and pending changes

The watch re-reads the official pages behind this guide every day. When one changes, a person re-checks the rule before anything here moves.

11Other doors

If descent doesn’t reach you

2 residence programs lead to Czechia without an ancestor, each with its own law and road to citizenship.

12Sources

Every source on this page

3 laws and official pages behind the answers, then the offices and pages behind the records and filing, then the legislative watch. Records and filing checked between 23 September 2026 and 25 September 2026.

  1. LawAct No. 186/2013 on Citizenship of the Czech Republic, §31 (declaration by former citizens and their descendants) and §4 · §4; §31(1) and (3); §31
  2. LawAct No. 207/2019, extending the §31 declaration to descendants
  3. LawMunicipal Court in Prague, judgment 18 A 53/2021
  4. RecordsThe matriční úřad (registry office) of their birthplace: Your parent’s Czech birth record
  5. RecordsHow to file: Citizen by descent or declaration · checked 25 September 2026
  6. RecordsParent still Czech at your birth: application for a Czech citizenship certificate (osvědčení o státním občanství). Parent lost Czechoslovak/Czech citizenship: declaration under §31(3) (Prohlášení), plus the personal data form (Osobní údaje) · checked 25 September 2026
  7. RecordsBirth records, 1926–2026: The matriční úřad · checked 25 September 2026
  8. RecordsBirth records, 1784–1925: The State Regional Archives · checked 25 September 2026
  9. WatchChamber of Deputies, print 585 (9th term), legislative history · checked 23 September 2026
  10. Watchzakonyprolidi.cz bill monitor: proceedings concluded with the end of the term · checked 23 September 2026

Not legal advice. Postern’s rulebook is written from the statutes and tested against documented cases; where the law is unsettled, the answer says “possible” or “unsure” rather than guess.

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