Citizenship in India: Constitutional Provisions & Acquisition
Part II of the Constitution, the Citizenship Act, 1955 and the recent judgments every UPSC aspirant should connect.
Take a child born in Bengaluru to an Indian father and a mother who entered India illegally. If that child was born in 1985, the child is an Indian citizen. Born in 1995, still a citizen. Born in 2010, the child does not qualify as a citizen by birth, because one parent is an illegal migrant.
The family and the city stay the same, yet the answer changes with the date. That is why citizenship in India trips up so many aspirants. You read the topic once, it feels easy, and then a Prelims statement with one changed date catches you out.
This guide gives you a cleaner way to think about it. At Legacy IAS Academy, we teach it as two questions: who became a citizen when the Constitution began, and who has become one since? The Constitution answers the first. Parliament answers the second.
Why Citizenship in India Matters for UPSC
Citizenship falls under Indian Polity in the UPSC Prelims syllabus and connects to GS Paper II in the Mains syllabus. It also connects to internal security through illegal migration and to international relations through the diaspora.
It matters for you personally too. Citizenship is a key condition in the UPSC exam eligibility rules, and you must be an Indian citizen to join the IAS or IPS.
The status also carries real constitutional weight:
- Fundamental Rights for citizens only: Articles 15, 16, 19, 29 and 30
- Offices reserved for citizens: President, Vice-President, Supreme Court and High Court judges, Governor and Attorney General, among others
- Political rights: voting under Article 326 and membership of Parliament and State Legislatures
Foreigners still enjoy rights such as Articles 14 and 21, so never write that all Fundamental Rights depend on citizenship.
Constitutional Provisions: Articles 5 to 11
Part II contains just seven Articles, and it never defines the word "citizen". The Statement of Objects behind the 1955 Act explains that Articles 5 to 9 settle who was a citizen at the commencement of the Constitution, while Article 11 leaves everything later to Parliament.
| Article | What it covers | Key test |
|---|---|---|
| 5 | Citizens at commencement | Domicile in India, plus birth in India, a parent born in India, or five years of ordinary residence |
| 6 | Migrants from Pakistan | Person, parent or grandparent born in undivided India; 19 July 1948 is the dividing date |
| 7 | Migrants to Pakistan | Those who left after 1 March 1947 lose citizenship, unless they returned on a resettlement permit |
| 8 | Persons of Indian origin abroad | Registration with an Indian diplomatic or consular representative |
| 9 | Foreign citizenship | Voluntarily acquiring it ends the claim under Articles 5, 6 and 8 |
| 10 | Continuity | Existing citizens remain citizens, subject to Parliament's law |
| 11 | Parliament's power | Parliament can regulate citizenship by law |
Article 11 works alongside Entry 17 of the Union List, which covers citizenship, naturalisation and aliens. States have no legislative role here.
"Students memorise Articles 5 to 8 and skip Articles 10 and 11. Yet those last two explain the whole design. Part II froze one moment in 1950 and handed the future to Parliament." — Legacy IAS Faculty
Articles 5 to 9 came into force on 26 November 1949 under Article 394, before the rest of the Constitution. People needed a settled status before the first elections and the Republic's institutions could function.
Single Citizenship in a Federal System
India has a dual polity but only one citizenship. A person from Karnataka and a person from Assam both hold Indian citizenship, and neither holds a separate state citizenship.
For Mains, add a layer. Single citizenship does not make every entitlement identical everywhere. Article 16(3) permits residence-based conditions for certain public jobs, and special provisions such as those in Article 371 protect regional interests.
How to Acquire Citizenship in India: The Citizenship Act, 1955
The Act sets out five routes: birth (Section 3), descent (Section 4), registration (Section 5), naturalisation (Section 6) and incorporation of territory (Section 7). Let's take them one at a time.
1. By Birth (Section 3)
India has steadily moved away from pure jus soli, where the place of birth decides everything, and towards jus sanguinis, where parentage counts. Three date bands tell the story.
| Born in India | Requirement |
|---|---|
| 26 January 1950 to 30 June 1987 | Birth in India is enough |
| 1 July 1987 to 2 December 2004 | At least one parent is an Indian citizen |
| On or after 3 December 2004 | Both parents are citizens, or one is a citizen and the other is not an illegal migrant |
Children of foreign diplomats with immunity and children of enemy aliens born in enemy-occupied territory do not qualify, unless the relevant parent is an Indian citizen in the diplomat's case.
2. By Descent (Section 4)
This route covers people born outside India, and it carries a useful gender-justice point for Mains. Before 10 December 1992, only the father's citizenship counted; from that date, either parent's citizenship is enough.
Since 3 December 2004, the birth must also be registered at an Indian consulate within one year, or later with Central Government permission, and the parents must declare that the child holds no other country's passport. A minor who also holds another citizenship must give it up within six months of reaching full age, or the Indian citizenship ends.
3. By Registration (Section 5)
Here, the person applies and the Central Government decides. Illegal migrants cannot use this route, and it covers seven categories:
- Persons of Indian origin ordinarily resident in India for seven years
- Persons of Indian origin ordinarily resident outside undivided India
- Spouses of Indian citizens, ordinarily resident in India for seven years
- Minor children of Indian citizens
- Adults whose parents registered as citizens under the first category or Section 6(1)
- Adults who, or whose parent, once held citizenship of independent India, with twelve months' ordinary residence
- Adults registered as OCI Cardholders for five years, with twelve months' ordinary residence
Watch the phrase "ordinarily resident for seven years". The Act treats it as a full twelve months in India before applying, plus at least six years within the eight years before that. Options built on this detail make good elimination material.
4. By Naturalisation (Section 6)
Naturalisation is the general route for foreigners. The Third Schedule requires twelve continuous months of residence or government service before applying, plus an aggregate of at least eleven years during the preceding fourteen. That is where the commonly quoted figure of 12 years comes from.
The applicant must also have good character, adequate knowledge of an Eighth Schedule language, and an intention to live in India or take specified service, and must undertake to renounce any existing citizenship. The Centre can waive any of these conditions for distinguished service to science, philosophy, art, literature, world peace or human progress.
5. By Incorporation of Territory (Section 7)
When a territory becomes part of India, the Central Government can notify which people connected with it become citizens, and from what date. Orders of this kind covered Goa, Daman and Diu, Dadra and Nagar Haveli and Pondicherry in 1962, and Sikkim in 1975.
All Five Modes at a Glance
Very few notes compare the modes this way, and it answers several exam traps at once.
| Mode | Application needed? | Oath of allegiance? | Open to deprivation under Section 10? |
|---|---|---|---|
| Birth | No | No | Not listed |
| Descent | Consular registration of the birth | No | Not listed |
| Registration | Yes | Yes, for adults | Yes, with limited exceptions such as Section 5(1)(a) |
| Naturalisation | Yes | Yes | Yes |
| Incorporation | No, by government order | Not required by Section 7 | Not listed |
Special Provisions: Section 6A and Section 6B
Section 6A and the Assam Accord
The Citizenship (Amendment) Act, 1985 inserted this provision to give effect to the Assam Accord. It applies to people of Indian origin who came to Assam from the territory that is now Bangladesh.
- Arrived before 1 January 1966: deemed citizens from that date
- Arrived from 1 January 1966 up to 24 March 1971 and detected as foreigners: must register, and become citizens for all purposes ten years after detection, with no place on electoral rolls during that period
In October 2024, the Supreme Court upheld Section 6A by a 4:1 majority, with Justice Pardiwala dissenting. The majority also held that Article 355 does not work as a standalone ground for striking down a law.
Section 6B and the CAA, 2019
The Citizenship (Amendment) Act, 2019 changed the law for a defined group. Hindu, Sikh, Buddhist, Jain, Parsi and Christian migrants from Afghanistan, Bangladesh and Pakistan who entered on or before 31 December 2014, and who hold the relevant government exemption, are no longer treated as illegal migrants under the Act.
Three details matter for your answers:
- The aggregate residence requirement for this group falls from eleven years to five
- Citizenship granted under Section 6B counts from the date of entry into India
- The section does not apply to Sixth Schedule tribal areas of Assam, Meghalaya, Mizoram and Tripura, or to Inner Line areas
The Rules followed on 11 March 2024, with an online application process. The constitutional debate remains open, so present both sides in your answer:
- The petitioners' case: the law discriminates on the basis of religion and fails the Article 14 reasonable classification test; they point out, for example, that persecuted migrants from Sri Lanka stay outside its scope.
- The Union's case: the law aims to accommodate people facing religious persecution, and it leaves the existing routes for foreigners and the rights of citizens untouched.
The Supreme Court refused to stay the Act in 2020 and the Rules in 2024. In February 2026, it listed the petitions for final hearing from 5 May 2026, and the Supreme Court Observer's case tracker, last updated in September 2026, still marks the matter as pending. Follow updates through our Polity and Constitution current affairs section.
Overseas Citizen of India: A Status, Not Citizenship
Many aspirants call OCI "dual citizenship". India does not allow dual citizenship, and an OCI Cardholder remains a foreign citizen.
Section 7B denies OCI Cardholders equal opportunity in public employment under Article 16, election as President or Vice-President, appointment as a Supreme Court or High Court judge, voter registration and membership of legislatures. Anyone who has a parent, grandparent or great-grandparent who was a citizen of Pakistan or Bangladesh, or who was one themselves, cannot register as an OCI Cardholder.
How Citizenship Ends
The topic of this guide is acquisition, but questions often pair it with loss of citizenship. Keep these three separate:
- Renunciation (Section 8): an adult citizen makes a declaration, and it takes effect once registered; a minor child also loses citizenship but can resume it within one year of reaching full age.
- Termination (Section 9): citizenship ends automatically when a citizen voluntarily acquires another country's citizenship.
- Deprivation (Section 10): the government orders it on grounds such as fraud, disloyalty to the Constitution, or helping an enemy during war.
The New Exam Angle: Who Decides Citizenship?
The debate has moved beyond who can become a citizen. It now also asks who can check citizenship, and what counts as proof.
On 27 May 2026, the Supreme Court upheld the Special Intensive Revision of electoral rolls. It allowed the Election Commission a limited inquiry into citizenship for voter-roll purposes, but held that the Commission cannot finally decide a person's citizenship. The Court also said that leaving a person off the voter list does not end that person's citizenship.
Critics, including petitioners and some experts, argue that the ruling endorses large-scale exclusion from voter rolls, while Bihar's electorate shrank by about 47 lakh after the revision. The Court, for its part, saw a legitimate constitutional purpose in keeping the rolls accurate. Add one related fact: Section 9 of the Aadhaar Act says an Aadhaar number does not prove citizenship.
Common Prelims Traps
Let's be honest: most marks in this topic disappear through small slips rather than big conceptual gaps. Test yourself against these before your next Prelims test series:
- "The Constitution defines citizenship." It doesn't.
- "Citizenship by birth depends only on birthplace." That stopped being true for births from 1 July 1987.
- "Naturalisation needs 14 years of residence." The fourteen is a window. The requirement is eleven years within it, plus the final twelve months.
- "OCI Cardholders are Indian citizens." They aren't.
- "Companies can claim citizenship." The Act's definition of "person" leaves out companies and associations.
How to Study This Topic
We know how it feels when a topic this date-heavy sits between a dozen other polity chapters. You don't need to memorise everything in one sitting. Spend one focused session on this sequence:
- Start with the Citizenship chapter in NCERT's Class 11 Political Theory, using our NCERT notes.
- Read the matching chapter from our recommended UPSC booklist, then browse the Indian Polity notes.
- Draw the birth and descent timelines from memory until you get every date right.
- Solve questions from our subject-wise PYQ collection and the daily static quiz.
- Write one answer a week from the questions below, then build on them with Mains practice questions.
If you have taken PSIR as your optional, link this statutory framework with political theory debates on citizenship and rights.
"The law of citizenship in India has moved steadily from birthplace towards parentage." Discuss with reference to amendments to the Citizenship Act, 1955. (150 words)
Examine how the Supreme Court has distinguished between the power to verify voter eligibility and the power to determine citizenship. (150 words)
Key Takeaways
- Sort every question first: does it concern 1950 (Part II) or the period after it (the 1955 Act)?
- Memorise four dates cold: 1 July 1987, 10 December 1992, 3 December 2004 and 31 December 2014.
- Use "eleven within fourteen, plus twelve months" for naturalisation, and don't confuse it with the seven-year registration test.
- Treat OCI as a separate status in every answer, and list what it denies.
- Present both sides on the CAA, and check the case status before you write about it.
- Add the May 2026 voter-roll ruling to your Mains notes on the Election Commission.
FAQ
Does the Indian Constitution give a permanent law on citizenship?
No. Part II mainly settles citizenship at the commencement of the Constitution. Article 11 lets Parliament legislate on the rest, which it did through the Citizenship Act, 1955.
Is every child born in India today an Indian citizen?
No. For births on or after 3 December 2004, both parents must be citizens, or one must be a citizen and the other must not be an illegal migrant.
Can a naturalised citizen become President of India?
Article 58 requires the President to be a citizen of India, and it doesn't require citizenship by birth. A naturalised citizen who meets the other conditions can therefore contest, unlike in the United States.
Does an OCI card allow a person to vote or take UPSC's IAS posts?
No. The Act bars OCI Cardholders from voter registration and from public services and posts, except those the Centre specifically notifies. Candidates for the IAS must be Indian citizens.
What should I cite from the Section 6A judgment in Mains?
Cite the case as In Re: Section 6A of the Citizenship Act, 1955 (2024), along with the 4:1 verdict and Justice Pardiwala's dissent. Then link it to the Assam Accord and the 25 March 1971 cut-off.
Ready to begin? Legacy IAS offers both Classroom and Online batches across Bengaluru and pan-India.
