If you descend from a citizen of the Republic of Estonia, you are probably already an Estonian citizen and have been since the day you were born. That sentence is doing a lot of work, and everything that follows depends on it. What happens here is recognition rather than a grant, which is why nobody asks you to give up your other passport.
Citizenship Act § 5: a child acquires Estonian citizenship by birth if at least one parent held it at the moment of the birth. There is no generational cap. It is a chain, not a count: if every link held citizenship when the next was born, it runs as far back as you can document.
Because you are not acquiring anything, the renunciation requirement — which is real for people who naturalise — does not reach you. And the Constitution forbids stripping citizenship acquired by birth, so it cannot be taken away later either.
Table of Contents
The chain, not the count
Citizenship Act § 5, in Estonian: "Sünniga omandab Eesti kodakondsuse: 1) laps, kelle sündimise ajal vähemalt üks tema vanematest on Eesti kodakondsuses; 2) pärast isa surma sündinud laps, kelle isa oli surma hetkel Eesti kodakondsuses." — a child at least one of whose parents holds Estonian citizenship at the time of the birth, plus the posthumous child of a father who held it at his death.
There is no “third generation” cut-off, because there is no generation count at all
Many countries cap descent at one or two generations born abroad. Estonia's statute contains no such cap. The test is applied once per link: did this person hold Estonian citizenship at the moment their child was born? If yes, the child has it, and the same question is then asked of the child. The Integration Foundation's portal for Estonians abroad puts it in one line: "Estonian citizenship is acquired by birth if at least one of the parents is a citizen of Estonia at the time of child's birth. This rule also applies retrospectively."
What breaks the chain
One link failing ends it.
- An ancestor who was released from Estonian citizenship before the next child was born
- An ancestor who never held it — a spouse who married in does not transmit it
- A birth you cannot document, which is a practical break rather than a legal one
- The moment that matters is the birth, not the marriage and not the emigration
What does not break it
These are the ones that surprise people.
- Emigrating. Leaving Estonia does not end citizenship
- Generations abroad. No cap, no residence requirement, no language requirement
- Holding another passport, if you are a birth citizen — see below
- Never having set foot in Estonia. Nothing in § 5 requires it
Why 16 June 1940 is the anchor
Estonia's 1992 restoration rested on state continuity: the doctrine that the Republic of Estonia never lawfully ceased to exist, and that the Soviet annexation was therefore not a lawful transfer of sovereignty. The practical consequence is that the body of citizens as it stood on 16 June 1940 — the eve of annexation — and their descendants were recognised as citizens without naturalising.
Ethnicity was irrelevant in both directions, and that is the part people find counter-intuitive
Roughly 80,000 non-Estonians qualified as descendants of pre-1940 citizens and were recognised as citizens — the other half of the same settlement produced the undetermined-citizenship population that still exists today. Meanwhile ethnic Estonians who arrived after 1940 had to naturalise like anyone else. The 1992 rule was about the pre-war citizenry, not about ethnicity — which is why "my grandmother was Estonian" is not the question. The question is whether she was a citizen of the Republic of Estonia, and whether she still was when your parent was born.
Proving it
The Rahvusarhiiv (National Archives) holds the pre-war citizenship records and runs a dedicated enquiry type for exactly this, through its VAU service. Its own form describes the scope as queries "Eesti Vabariigi (1918–1940) kodakondsuse omamise ja kodakondsusest lahkumise kohta" — the holding of, and release from, Republic of Estonia citizenship between 1918 and 1940. That second half matters: the archive can tell you the chain was broken, and that is worth knowing before you spend money on apostilles.
Gather what the archive needs
The form asks for "võimalikult täpsed andmed isiku(te) kohta" — as precise data as possible: full names, parents' names, life dates, occupation or education, place of residence, and church affiliation. Church affiliation is not a formality; pre-war Estonian vital records are largely parish records.Pay the €25 state fee
The archive states plainly that the enquiry is only taken into work once the fee is paid, and is then answered within 30 days.Assemble your own side of the chain
Original, apostilled birth certificates for every person in the direct line linking you to the Estonian ancestor, translated as required. This is usually the slow and expensive part, and it is worth doing after the archive confirms the ancestor rather than before.Apply to an embassy, a consulate, or PPA in Estonia
The Integration Foundation's Global Estonian portal directs descent claimants to the nearest Estonian embassy or consulate, or to the Police and Border Guard Board in Estonia.
The Documentary Reality
A descent claim is a documentation exercise, and the documents come from two places that behave completely differently. One is an Estonian archive with a published fee and a published deadline. The other is a foreign registry office with neither.
Ask the National Archives first
The Rahvusarhiiv enquiry covers both the holding of and release from Republic of Estonia citizenship in 1918–1940. It is taken into work only once the €25 state fee is paid and is answered within 30 days. It can tell you the chain was broken, which is the cheapest bad news available.
Give the archive what its form actually asks for
“Võimalikult täpsed andmed isiku(te) kohta” — as precise data as possible: full names, the parents’ names, life dates, occupation or education, place of residence, and church affiliation. The last is not a formality. Pre-war Estonian vital records are largely parish records, so the denomination is often what tells an archivist which register to open.
Assemble an unbroken run of birth certificates in the direct line
One per person linking you to the Estonian ancestor. This is the slow and expensive half, it is executed in whichever countries those births were registered in, and it is worth starting after the archive answers rather than before.
Have those documents apostilled, in a language Estonia reads
For entering a foreign birth in the Population Register, Estonia asks for documents apostilled or legalised — with a treaty exception for documents from Russia, Latvia, Lithuania, Poland and Ukraine — in Estonian, Russian or English. An apostille is issued by the country that issued the document, never by Estonia, and never from here.
If you cannot answer the first step yet, pay the €25 before anything else. The archive can end the claim, and it is the only step on this page that can do so cheaply. Everything after it is money spent in another country on documents that may turn out to prove nothing.
The two costs that dominate the budget are not set by Estonia. The €25 archive enquiry is published; the other two costs are not. Apostilles and translations are charged by the issuing country and by translators, not by Estonia, and they scale with the number of generations in your chain rather than with anything Estonia decides. A claim reaching back to a great-grandparent through two countries is a different budget from one reaching back to a parent through one, and no state prices either. Ask the mission taking your file what it charges before you assemble the file, and price the apostilles at home.
Estonia publishes no validity window for the civil-status documents in a descent claim, so ask the mission before you pay for a second set.
Where You Apply, and Why It Is Not the Visa Answer
The Integration Foundation's Global Estonian portal directs descent claimants to the nearest Estonian embassy or consulate, or to the Police and Border Guard Board in Estonia. That sentence is short, and the thing it does not say is the one that matters.
| A Schengen visa | A descent claim | |
|---|---|---|
| Estonia’s own missions | Nineteen places on earth, two of them long-stay only | The same thin network |
| If Estonia has no mission where you live | Another Schengen state takes it — roughly ninety-nine countries are covered this way | A representation agreement covers visa applications. Estonia has no representation arrangement reaching a citizenship matter |
| The fallback | — | PPA, in Estonia |
So the practical answer for most claimants is a journey, or a courier, or both. A Filipino applicant lodges a Schengen visa application with Denmark, a Thai with Finland, a Pakistani with Hungary — but the instruction for a descent claim names an Estonian embassy or consulate, or PPA, and nothing published extends it to the state that handles the visa. Two named cases narrow the network further: Estonia's Moscow mission has had issuance restricted to narrow categories since 2022, and Minsk stopped taking applications on 20 May 2024.
The one genuine advantage of this route over every other on the site is that nothing here is time-limited. A visa has to be applied for before travel and no later than 15 days ahead; a residence permit has to be extended 2 months before it expires; naturalisation needs 8 years of residence to have already happened. A descent claim has no deadline of any kind, because § 5 establishes a fact rather than granting a status. If the archive answer takes a year and the apostilles take another, nothing lapses in the meantime.
Write to the mission before travelling to it: the network is small, and two of its points are restricted.
How Long It Takes, and What Causes Delay
One stage of this has a published deadline. The rest is governed by other countries' registry offices, which is why the ranges here are wide.
The fast case
One generation, and the documents already exist in Estonian hands: a parent who is a documented Estonian citizen, a birth registered here or in a treaty country needing no apostille, and an archive enquiry answered inside its 30 days. Weeks of work, most of it waiting for post.
The typical case
Two or three generations, a grandparent or great-grandparent in the 1918–1940 records, and a chain of birth certificates issued by one foreign state. The archive answers in 30 days from the day the €25 clears; the apostilles and translations that follow are executed abroad and are the part nobody can date for you.
The slow case
A chain crossing several states, a common surname with no church affiliation to narrow the parish register, or an ancestor whose file the archive does not hold. And the worst version is not slow at all — it is the enquiry that comes back saying the ancestor was released from citizenship before the next birth, which ends the claim outright.
Estonia publishes no processing time for having citizenship acquired by birth established, and the neighbouring permit deadlines are not a guide to it, so do not build a start date around one.
The one delay you control is the order. Pay the €25 first. Every other cost on this route is spent in another country on documents that a single archive answer can render worthless, and the archive is both the cheapest step and the only one that can end the exercise.
When the chain breaks, and what is actually left
The €25 enquiry can come back with the answer nobody wants: the ancestor was released from Estonian citizenship before your parent or grandparent was born, or the archive holds nothing on them at all. That is the end of the descent claim, and it is worth knowing precisely what it is the end of — because the route people are pushed towards next is a completely different animal, not a slower version of the same one.
| Recognition by descent | Naturalisation | |
|---|---|---|
| What is happening | A fact about your birth is being established | A status is being granted to you |
| Residence in Estonia | None. § 5 asks nothing about where you have lived | 8 years, 5 of them on a permanent basis — and long-term resident status already in hand on the day you apply |
| Estonian language | None | B1. In 2025, 59.57% of the 3,824 people who sat that exam passed it |
| Constitution exam | None | 24 multiple-choice questions in Estonian, 18 correct to pass |
| Your other passport | Keep it | § 12(2): prove you have been, or will be, released from it |
| Who decides | An Estonian embassy or consulate, or PPA inside Estonia | The Government of the Republic. A Cabinet decision, and its own timeline is not published anywhere |
| State fee | None published — ask the mission | €150 |
Ancestry is not a shortcut into the naturalisation route either. The Police and Border Guard Board's published grounds for a temporary residence permit are employment, top specialist, EU Blue Card, study, business, start-up and family reunification. A great-grandparent is not on that list. What is on it is a living Estonian-citizen relative: settling with an Estonian spouse or close relative carries its own permit at €115 in Estonia, or €145 at a mission abroad. That is residence, not citizenship — it starts the 8-year clock rather than skipping it.
There is one discretionary door, and a reason not to plan around it. Citizenship Act § 10 lets the Government waive the residence and examination requirements for exceptional achievement — and caps that at no more than 10 people a year, for the whole country. It exists, it is real, and it is not a contingency plan. For scale: 781 people were granted Estonian citizenship in the whole of 2025, by every route combined.
PPA's fee table gives €150 for the grant of citizenship, for resumption and for release in Estonia, and €180 for release at a foreign representation. It carries no line for having citizenship acquired by birth established, so ask the mission what it charges before you assemble the file. What is certain is the €25 archive enquiry, plus apostilles and translations, which are priced by your own country rather than by Estonia.
Dual citizenship: real for naturalisers, unenforceable against birth citizens
This is the most misreported thing about Estonian citizenship, and it needs three statements held at once.
| What the law says | What actually happens | |
|---|---|---|
| The prohibition | Citizenship Act § 1(2): an Estonian citizen may not simultaneously hold the citizenship of another state | Real, and enforced — against naturalised citizens |
| Naturalising | § 12(2): prove you have been or will be released from your previous citizenship | Enforced at the application stage. No release, no citizenship |
| Taking a second passport later | § 29(1): the authority deems a person to have ceased to be an Estonian citizen when they accept another state's citizenship | Bites on naturalised citizens |
| Birth citizens | Constitution § 8: "Kelleltki ei tohi võtta sünniga omandatud Eesti kodakondsust" | Cannot be deprived. The only available sanction is constitutionally barred |
| Dual-national minors | § 3: must renounce one or the other within three years of turning 18 | A duty with no enforceable sanction against a birth citizen |
The Chancellor of Justice has told the Police and Border Guard Board this in public. Constitution § 8, third sentence: "Kelleltki ei tohi võtta sünniga omandatud Eesti kodakondsust." — no one may be deprived of Estonian citizenship acquired by birth. The Citizenship Act repeats it at § 5. The annotated Constitution's commentary reads the prohibition as absolute and as applying even where the loss would be triggered by acquiring another state's citizenship — so a naturalised citizen can lose Estonian citizenship that way and a birth citizen cannot, which produces unavoidable dual citizenship notwithstanding § 1(2).
The Chancellor of Justice put it in her annual overview — "Sünnijärgselt kodanikult kodakondsust ära võtta ei või" — and criticised PPA for having attempted to declare birth citizens holding a second passport to be no longer Estonian citizens, calling it a breach of legal certainty. That is the state's own constitutional watchdog telling the administering agency it was wrong.
The honest formulation, which is what we would want told to us: Estonia's ban on dual citizenship is real for people who naturalise and effectively unenforceable against people who are Estonian by birth. A descent claim is not a naturalisation, so nobody will ask you to give up your American, Canadian, Australian or British passport. The Citizenship Act still says an Estonian citizen may not hold another citizenship, and § 3 still tells dual-national minors to choose within three years of turning 18 — but the Constitution forbids the only sanction that would enforce either, and the Chancellor of Justice has said so.
Reform has been tried and failed. Bill 634 SE, from the Reform Party faction, taken into proceedings on 10 May 2018, would have legalised multiple citizenship for birth citizens. It did not pass. The gap between § 1(2) and Constitution § 8 is therefore still open, and is managed by non-enforcement rather than by law.
Deprivation does work in one direction, and only one. A 2020 amendment lets the Government revoke citizenship from naturalised citizens convicted of treason or terrorist offences. Of eight relevant convictions between 2010 and 2019, four were naturalised citizens and two had citizenship revoked. Guides that describe this as applying to all Estonian citizens are wrong, and wrong constitutionally rather than as a matter of practice.
Children born abroad to an Estonian parent
The citizenship is automatic under § 5. There is no application for it and no deadline after which the child loses it. What there is, is a civil-registration formality and then a document application — and conflating the two is where the anxiety comes from.
| What is required | |
|---|---|
| Registering the birth | If the birth was registered abroad, it does not have to be re-registered. Submit the foreign birth document to the local government of the county centre — in Tallinn, the Vital Statistics Office — to enter it in the Population Register |
| Legalisation | Apostilled or legalised, unless a treaty says otherwise. Not required for documents from Russia, Latvia, Lithuania, Poland or Ukraine |
| Language | Estonian, Russian or English |
| Deadline | One month from birth, extendable to two for good reason — "mõjuval põhjusel" |
| What gets recorded | "Kui vähemalt ühel vanemal on Eesti kodakondsus, kantakse lapse kodakondsuseks Eesti kodakondsus" — where at least one parent is an Estonian citizen, the child's citizenship is recorded as Estonian |
If you missed the one-month deadline, you have a paperwork problem, not a citizenship problem. The one month is a civil-registration deadline. Neither the Interior Ministry's page nor the Foreign Ministry's consular leaflet states any consequence for missing it, and nothing in the law forfeits citizenship for a late registration — which would in any case run into Constitution § 8. No sanction is stated anywhere. Register late and expect friction, not loss.
The only real deadline in this area is § 3 — a person who held Estonian citizenship and another state's citizenship from minority must renounce one within three years of turning 18. Read that alongside the section above: against a birth citizen it is a duty whose only sanction is barred by the Constitution.
What recognition actually gives you — and what it leaves alone
Everything above is about establishing the fact. This is about what the fact is worth, because a page that stops at the archive enquiry leaves the reader holding a document and no idea what it changes.
| Estonian citizen | Resident who is not a citizen | |
|---|---|---|
| Living in Estonia | No permit, no language level, nothing to renew | A residence permit or a right of residence, extended on a schedule you have to keep |
| Local elections | Yes | From 1 March 2026 the local franchise is Estonian citizens only. EU citizens keep it; nobody else does |
| Riigikogu and European Parliament | Yes | Never. Holders of an alien's passport have never voted in either |
| Public service | Open | Closed: the defence forces, police, security services, prosecution, courts and ministries |
| Working elsewhere in the EU | As an EU citizen — no permit needed | A permit in the other member state, like any third-country national |
| Losing it | Constitution § 8: no one may be deprived of citizenship acquired by birth | Permits lapse, and an EU right of residence is revoked automatically if no address is registered |
The consequence families actually ask about is university fees. EU citizenship, not Estonian residence, is what most Estonian universities price on. English-taught degrees are free to EU citizens at TalTech outside its business school and across much of the University of Tartu; everyone else pays roughly €3,800–€9,800 a year depending on the field. Tartu ended tuition waivers for newly admitted non-EU students from the 2026/27 intake. For a family with a documentable Estonian grandparent and a teenager, that is the largest single number on this page — see universities.
That is the half of the heading about what recognition gives you. The other half is what it leaves exactly as it was, and the first thing on that list is money in the other direction.
It does not make you an Estonian taxpayer, and it is not a change of address. Estonian tax residency turns on 183 days over any twelve consecutive months — a rolling period, not a calendar year — or on your place of residence being here. Citizenship is not one of the tests, and being entered in the Population Register is not one either. A recognised birth citizen living in Toronto is an Estonian citizen and a Canadian taxpayer, and nothing on this page changes the second half of that sentence. See the tax return page for how residency is actually determined.
What it also leaves alone is the § 1(2) prohibition and the § 3 duty on dual-national minors, both covered above. They remain on the statute book, and against a birth citizen the only sanction that would enforce either is barred by the Constitution.
The Documents That Follow, and the Chain That Continues
Recognition establishes a fact. Turning the fact into something you can show at a border is a separate set of errands, and the chain does not stop with you.
What you then apply for
The documents, not the status.
- An ID card, the document that carries the personal identification code — €45 at a service office, €35 through self-service, €75 at a foreign representation, and €250 expedited
- A passport, which is what makes the EU free movement in the section above usable
- See the isikukood page for what the code unlocks, and for what a registered address unlocks separately
What it does not switch on
Three things people assume follow, and do not.
- Tax residency. 183 days in any twelve consecutive months, or a permanent home here — citizenship is not one of the tests
- A registered address. A separate act at a municipality, with its own consequences for health insurance and municipal services
- Any obligation to move. § 5 asks nothing about where you have lived and nothing about where you will live
Your own children are already covered, and the only deadline is a registration one. The moment your citizenship is established, § 5 reaches any child of yours born while you hold it — automatically, with nothing to apply for and no generational cap to run out of. The chain you have just proved is now a chain you are in the middle of rather than at the end of. What carries a deadline is the civil registration of a birth abroad, and that is the section above: one month, extendable to two for good reason, and a paperwork problem rather than a citizenship one if you miss it.
The one duty that survives into the next generation is § 3: a person holding Estonian and another citizenship from minority must renounce one within three years of turning 18. Read alongside the dual-citizenship section above, that is a duty whose only sanction — deprivation — is barred by Constitution § 8 for anyone who is Estonian by birth, which every person in this chain is.
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FAQ
How many generations back can an Estonian citizenship claim go?
There is no generational cap in the statute. Citizenship Act § 5 asks a single question at each link — did at least one parent hold Estonian citizenship at the moment of the child's birth — and if the answer is yes all the way down, the claim runs as far back as you can document. The Integration Foundation states that the rule applies retrospectively. The practical limit is evidence, not law.
Do I have to give up my other citizenship to claim Estonian citizenship by descent?
No. The renunciation requirement is Citizenship Act § 12(2), which sits in the naturalisation machinery and turns on the words "in relation to his or her acquisition of Estonian citizenship". A person who is Estonian by birth is not acquiring anything — the state is recognising a status they have held since birth — and Constitution § 8 forbids depriving anyone of citizenship acquired by birth. The Chancellor of Justice has publicly criticised the Police and Border Guard Board for treating a birth citizen's second passport as terminating Estonian citizenship.
My grandmother was Estonian. Do I qualify?
Being ethnically Estonian is not the test, in either direction. The question is whether she was a citizen of the Republic of Estonia and whether she still held that citizenship at the moment your parent was born. About 80,000 non-Estonians qualified through the 1992 restoration as descendants of pre-1940 citizens, while ethnic Estonians who arrived after 1940 had to naturalise. Start with a National Archives enquiry, which covers both the holding of and release from citizenship in 1918–1940.
What does it cost to check the archives?
€25, per the National Archives' own VAU enquiry form, which states the enquiry is taken into work once the fee is paid and answered within 30 days. Note that Global Estonian, run by the Integration Foundation, quotes €15 for the same thing — the archives are the body doing the charging, so budget their figure. Do the archive enquiry before paying for apostilles — it can also tell you the chain was broken.
My child was born abroad and we missed the one-month registration deadline. Have they lost citizenship?
Almost certainly not. Citizenship under § 5 is automatic at birth; the one-month deadline is for entering the birth in the Population Register, and it is extendable to two months for good reason. Neither the Interior Ministry nor the Foreign Ministry states any consequence for missing it, and forfeiting citizenship would run into the constitutional bar on depriving anyone of citizenship acquired by birth. Register the birth as soon as you can regardless, and ask the mission for the extension in writing if the month has already run.
Does claiming by descent require me to live in Estonia or speak Estonian?
No. Neither a residence period nor a language exam appears anywhere in § 5, because those belong to naturalisation. A descent claim establishes a fact about your birth. That asymmetry is the whole reason the two routes are worth keeping apart in your head: naturalisation is eight years, B1 Estonian, two exams and a renunciation, and descent is a documentation exercise.
The archive says my ancestor was released from Estonian citizenship. Is anything left?
Not by descent. A release before the next birth in the line ends the chain, and there is no appeal against a fact. What is left is a different route rather than a slower version of the same one, and it is worth being clear about that before anyone sells you otherwise. Ancestry is not a ground for a residence permit: the Police and Border Guard Board's published grounds are employment, top specialist, EU Blue Card, study, business, start-up and family reunification, and a great-grandparent appears on none of them. A living Estonian-citizen relative does — settling with an Estonian spouse or close relative carries its own permit at €115 in Estonia or €145 at a mission abroad — but that is residence, and it starts the 8-year naturalisation clock rather than skipping it. The § 10 special-merit waiver is real and is capped at 10 people a year for the whole country, which is not a contingency plan.
Does having Estonian citizenship recognised make me an Estonian taxpayer?
No, and the two questions are not connected. Estonian tax residency turns on 183 days over any twelve consecutive months — a rolling period, not a calendar year — or on your place of residence being in Estonia. Citizenship is not one of those tests, and being entered in the Population Register is not one either. A recognised birth citizen living in Toronto is an Estonian citizen and a Canadian taxpayer, and nothing in the recognition changes the second half of that sentence. The tax return page on this site sets out how residency is actually determined.
What is recognition worth if we never intend to move to Estonia?
Mostly that it makes you a citizen of the European Union, which is a larger thing than an Estonian passport on its own. It lets you work anywhere in the EU without a permit. And EU citizenship, not Estonian residence, is what most Estonian universities price on: English-taught degrees are free to EU citizens at TalTech outside its business school and across much of the University of Tartu, while everyone else pays roughly €3,800–€9,800 a year depending on the field, and Tartu ended tuition waivers for newly admitted non-EU students from the 2026/27 intake. For a family with a documentable Estonian grandparent and a teenager, that is the largest number in the whole exercise. None of it requires you to live here — § 5 asks nothing about where you have lived.
What does the National Archives actually need in order to trace an ancestor?
Its enquiry form asks for as precise data about the person as you can give: full names, the parents' names, life dates, occupation or education, place of residence, and church affiliation. The last of those is not a formality — pre-war Estonian vital records are largely parish records, so the denomination is often what tells an archivist which register to open. The enquiry covers both the holding of Republic of Estonia citizenship between 1918 and 1940 and release from it, it is taken into work only once the €25 fee is paid, and it is answered within 30 days. Assemble the apostilled birth certificates for your own side of the chain after that answer arrives, not before: they are the slow and expensive part, and the archive can end the claim first.
Most failed claims fail on the same three misreadings of the statute. Thinking ethnicity is the test is the commonest, and it is wrong in either direction: pre-1940 citizenship is the test, and about 80,000 non-Estonians qualified on exactly that basis. Assuming a generational cap is the second — the statute has none, and each link is tested once, on the moment of the next birth. Expecting to renounce another passport is the third: that requirement is § 12(2), it sits in the naturalisation machinery, and recognition is not acquisition.
The other three mistakes cost money or nerves rather than the claim. Buying apostilles before checking the archive is the expensive one: the €25 enquiry can tell you an ancestor was released from citizenship, which ends the claim before any of that spending was needed. Panicking about a late birth registration is the unnecessary one — it is a Population Register deadline, not a citizenship deadline, and it extends to two months for good reason. And reading § 3 as a real trap misreads it: it tells dual-national minors to choose by 21, but against a birth citizen the only sanction is barred by Constitution § 8.
Related guides
Check the archive before you buy apostilles
The chain is proved on paper, and that paper has to be legalised and translated by a sworn translator before any office here will read it. Find out what your own documents actually need first.