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Commencement of the Constitution (26 January 1950)

By Abishek A 13 August 2026 Updated 9 September 2026 6 min read 10 views
Overview

Commencement of constitution: on 26 January 1950, India became a Sovereign Democratic Republic and fixed citizenship rules under Articles 5 to 11.

At a glance

What it is

26 January 1950 — the day the Constitution of India came into force, ending Dominion status and making India a Sovereign Democratic Republic.

Key provision

Article 5 fixed citizenship at commencement for persons domiciled in India, based on birth, parentage, or five years' residence.

Why it matters

It is the founding date for the Republic, the Union's territorial scheme under Article 1, citizenship under Articles 5–11, and the Supreme Court of India.

Timeline

26 Jan 1950
Constitution commences
India becomes a Sovereign Democratic Republic; Supreme Court of India established in New Delhi
1955
Citizenship Act enacted
Parliament, using power under Article 11, prescribes five modes of acquiring and three of losing citizenship

Commencement of constitution refers to 26 January 1950, the day the Constitution of India came into force and India transformed from a British Dominion into a Sovereign Democratic Republic. The date was deliberately chosen to mark the anniversary of the 1930 "Purna Swaraj" resolution, and it fixed the legal starting point for the Union's territory, its citizenship rules, and the institutions — including the Supreme Court — that the new Constitution created.

From Dominion to Republic

Before 26 January 1950, India functioned as a Dominion under the Government of India Act framework, with the British monarch as titular head. With the Constitution's commencement, that status ended. India declared itself a Republic — a form of government where sovereignty rests with the people, and the highest offices, including that of an elected President as head of State, are open to any citizen rather than reserved by heredity or foreign appointment. At the moment of commencement, the constitutional description of India was "Sovereign Democratic Republic"; the additional words describing India as secular and socialist were not part of the original text and were inserted only through a later constitutional amendment.

Territorial Structure Under Article 1

Article 1 of the Constitution describes India, "that is Bharat," as a Union of States and defines its territory as comprising the territories of the states, the union territories, and any other territory that the Government of India may acquire in future. States function as members of the federal system with their own governments, while union territories are administered directly by the Central government. This structural distinction — states as federal units, union territories as centrally administered areas — is the basic template on which India's internal map has been organised since commencement.

Citizenship at Commencement — Article 5

Because India did not exist as a constitutional entity before 26 January 1950, the framers had to specify, as a one-time exercise, exactly who would count as a citizen on that day. Article 5 answers this for persons domiciled in India: a person qualified as a citizen at commencement if they were domiciled in India and additionally satisfied at least one of three conditions —

  • born in India; or
  • either parent was born in India; or
  • ordinarily resident in India for not less than five years immediately before commencement.

The Other Citizenship Categories — Articles 6 to 8

Articles 5 to 11 together set out four distinct categories of persons who acquired Indian citizenship at commencement, reflecting the unusual circumstances of Partition and the diaspora existing at the time.

Category Covered by Broad basis
Persons domiciled in India Article 5 Birth in India, parent born in India, or five years' prior residence
Migrants from Pakistan to India Article 6 Birth (self or ancestor) in undivided India, plus residence/registration conditions
Persons who migrated to Pakistan but returned Article 7 Resettlement in India with a registration requirement
Persons of Indian origin residing outside India Article 8 Registration as a citizen through an Indian diplomatic or consular post

Article 9 further clarified that a person who voluntarily acquired the citizenship of a foreign state would not be treated as an Indian citizen. Articles 10 and 11 then carried this one-time citizenship arrangement forward: citizenship recognised at commencement continues subject to any law Parliament may make, and Parliament was given the power to legislate on the acquisition, termination, and all other aspects of citizenship going forward.

The Citizenship Act, 1955

Using the power under Article 11, Parliament enacted the Citizenship Act, 1955, to govern citizenship matters after the constitutional cut-off of 26 January 1950. The Act prescribes distinct routes for gaining and losing citizenship.

Acquisition of citizenship Loss of citizenship
Birth Renunciation
Descent Termination
Registration Deprivation
Naturalisation
Incorporation of territory

This framework replaced the commencement-specific rules of Articles 5 to 8 with an ongoing statutory mechanism, meaning citizenship questions arising after 1950 are settled under the 1955 Act rather than under the constitutional articles themselves.

The Supreme Court and 26 January

The same date also marks the establishment of the Supreme Court of India, seated in New Delhi. As the apex court under the new constitutional order, its decisions bind every other court in the country, making 26 January 1950 the founding date for both India's political republic and its judicial hierarchy.

UPSC Relevance

Prelims

  • Exact date and significance of the Constitution's commencement (26 January 1950).
  • Distinguishing Article 5 (domiciled persons) from Articles 6–8 (migrants and overseas Indians).
  • The five modes of acquiring and three modes of losing citizenship under the Citizenship Act, 1955.
  • Article 1's definition of the Union's territory (states, union territories, acquired territory).

Mains

  • Discuss why the framers treated citizenship at commencement as a one-time constitutional exercise (Articles 5–11) separate from the ongoing statutory law (Citizenship Act, 1955).
  • Examine how Partition-era migration shaped the citizenship categories under Articles 6 and 7.

FAQ

Q1. What is the commencement of the Constitution? It is 26 January 1950, the date the Constitution of India came into legal force, converting India from a Dominion into a Sovereign Democratic Republic.

Q2. Which article deals with citizenship at the commencement of the Constitution? Article 5, read together with Articles 6 to 11, which together determined who became a citizen of India on 26 January 1950.

Q3. What are the five ways of acquiring citizenship under the Citizenship Act, 1955? Birth, descent, registration, naturalisation, and incorporation of territory.

Q4. What are the three ways of losing Indian citizenship? Renunciation, termination, and deprivation, as provided in the Citizenship Act, 1955.

Q5. Was India described as "Secular" and "Socialist" in the Constitution from 26 January 1950? No. At commencement, India was described as a Sovereign Democratic Republic; the words "Secular" and "Socialist" were added to the Preamble later, through a subsequent constitutional amendment.

Quick Revision

  • Constitution commenced: 26 January 1950.
  • India became: Sovereign Democratic Republic (at commencement).
  • Article 1: Union of States — states + union territories + acquired territory.
  • Article 5: citizenship of domiciled persons at commencement.
  • Articles 6–8: migrants from Pakistan, returnees from Pakistan, overseas persons of Indian origin.
  • Article 9: foreign citizenship acquired voluntarily bars Indian citizenship.
  • Articles 10–11: continuance of citizenship; Parliament's power to legislate on citizenship.
  • Citizenship Act, 1955: 5 modes of acquisition, 3 modes of loss.
  • Supreme Court of India also established on 26 January 1950, seated in New Delhi.

Sources

Further Reference

For deeper reading on this topic and the wider polity syllabus, these standard works are recommended:

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Constitutional provisions

Article 1

Defines India as a Union of States; territory comprises states, union territories, and any acquired territory

Article 5

Citizenship at commencement for persons domiciled in India

Article 6

Citizenship rights of persons who migrated to India from Pakistan

Article 7

Citizenship rights of persons who migrated to Pakistan but returned to India

Article 8

Citizenship rights of persons of Indian origin residing outside India

Article 9

Voluntary acquisition of foreign citizenship bars Indian citizenship

Article 11

Parliament's power to regulate citizenship by law

Relevant Acts & Judgments

Acts
Citizenship Act, 1955
Enacted under Article 11; prescribes birth, descent, registration, naturalisation and incorporation of territory as modes of acquiring citizenship, and renunciation, termination and deprivation as modes of losing it
Key distinction: Citizenship under Articles 5–11 was a one-time constitutional arrangement effective only at commencement (26 January 1950); all citizenship questions arising afterward are governed by the Citizenship Act, 1955, enacted under Article 11.
commencement-of-constitutionrepublic-daycitizenship-act-1955article-5-citizenshipconstitution-of-india26-january-1950
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Commencement of the Constitution (26 Jan 1950) — UPSC | UPSC.wiki