Constitutional amendment timeline
Preview of 21 selected amendments, not a complete register. These educational drafts are not official legal translations. Source, current legal status and language reviews remain pending. Read the qualifications and official sources before relying on a note.
1951 · Draft study notes
1st Amendment: rights and land reform
Changed rights provisions and protected specified land-reform laws.
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Early litigation over fundamental rights complicated social reform and land redistribution.
It addressed affirmative measures, speech restrictions and agrarian reform through different constitutional provisions.
Key changes
- Added Article 15(4) and revised Article 19 restrictions.
- Inserted Articles 31A and 31B and the Ninth Schedule.
Qualifications and commencement
Assent and ordinary commencement: 18 June 1951. Some provisions have retrospective wording; consult the Act.
- Historical protection must not be described as unconditional immunity from all judicial review; further case-law review is pending.
Official sources
1956 · Draft study notes
7th Amendment: reorganising States
Adapted the constitutional framework to State reorganisation.
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State reorganisation required changes to territories, representation and administration.
It replaced the earlier classification of States and adjusted the constitutional machinery for States and Union territories.
Key changes
- Recast Article 1 and the First Schedule.
- Provided for common High Courts and linguistic-minority safeguards.
Qualifications and commencement
Section 1(2) fixes commencement on 1 November 1956, after assent on 19 October.
- The 1956 territorial arrangement is historical; later reorganisation laws changed it further.
Official sources
1971 · Draft study notes
24th Amendment: Parliament’s amending power
Expressly affirmed Parliament’s constituent power.
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It responded to the restriction on amending fundamental rights in Golak Nath.
Constitutional amendment was distinguished from ordinary lawmaking through changes to Articles 13 and 368.
Key changes
- Inserted Article 13(4) and affirmed constituent power in Article 368.
- Required presidential assent to a duly passed constitutional amendment Bill.
Qualifications and commencement
Assent and commencement: 5 November 1971.
- Amending power is subject to the basic structure doctrine; it is not unlimited. Original judgment review remains pending.
The basic structure doctrine limits amending power. The official Article 31C footnote records invalidation of its declaration clause; full original judgment review is pending.
Official sources
1971 · Draft study notes
25th Amendment: property and Directive Principles
Changed property-acquisition provisions and inserted Article 31C.
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It followed disputes over compensation in property-acquisition legislation.
The amendment sought to protect redistribution measures while changing the constitutional rules for acquisition payments.
Key changes
- Replaced compensation with amount in the former Article 31(2).
- Inserted Article 31C concerning laws implementing Article 39(b) and (c).
Qualifications and commencement
Assent and commencement: 20 April 1972, despite the 1971 Act title.
- The declaration clause restricting review was struck down in Kesavananda Bharati. Article 31 was later omitted; the 42nd Amendment’s expansion of Article 31C was invalidated.
The basic structure doctrine limits amending power. The official Article 31C footnote records invalidation of its declaration clause; full original judgment review is pending.
Official constitutional footnotes record invalidation of sections 4 and 55 of the 42nd Amendment. Original judgment retrieval remains pending.
The reported 2024 holding confirms that Article 31C, to the extent upheld in Kesavananda Bharati, remains in force.
Official sources
1976 · Draft study notes
42nd Amendment: duties and institutional changes
Made wide changes to constitutional institutions, duties and Directive Principles.
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Enacted during the Emergency, it sought extensive institutional and socio-economic changes.
Its surviving changes must be distinguished from provisions later reversed or invalidated.
Key changes
- Added words to the Preamble, fundamental duties and new Directive Principles.
- Inserted tribunal provisions and expanded central and parliamentary powers.
Qualifications and commencement
Assent: 18 December 1976. Recorded stages: 3 January, 1 February and 1 April 1977. Listed unresolved sections need notification-level review; do not assign one date to the entire Act.
- Sections 4 and 55 were invalidated in Minerva Mills; later amendments also reversed provisions. The entire original Act is not currently operative unchanged.
Official constitutional footnotes record invalidation of sections 4 and 55 of the 42nd Amendment. Original judgment retrieval remains pending.
The reported 2024 holding confirms that Article 31C, to the extent upheld in Kesavananda Bharati, remains in force.
Official sources
1978 · Draft study notes
44th Amendment: rights and Emergency safeguards
Reworked Emergency safeguards and the constitutional status of property.
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It followed the Emergency and sought safeguards against misuse of power.
It strengthened constitutional protections while moving property protection outside the fundamental-rights chapter.
Key changes
- Inserted Article 300A and removed the former fundamental right to property.
- Changed Emergency grounds and protected enforcement of Articles 20 and 21 under Article 359.
Qualifications and commencement
Assent: 30 April 1979; Act title: 1978. Stages recorded for 20 June, 1 August and 6 September 1979. Section 3 and reprint discrepancies need notification review.
- Do not teach the proposed two-month preventive-detention change as operative: section 3 commencement is not established in this review.
Official sources
1985 · Draft study notes
52nd Amendment: anti-defection provisions
Added the Tenth Schedule on disqualification for defection.
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Political defections prompted constitutional rules on legislative membership.
It connected disqualification for defection with membership of Parliament and State legislatures.
Key changes
- Inserted the Tenth Schedule and amended Articles 101, 102, 190 and 191.
- Set rules on party membership, voting directions, splits and mergers.
Qualifications and commencement
Assent: 15 February 1985; commencement: 1 March 1985.
- Paragraph 7’s jurisdiction bar was invalidated in Kihoto Hollohan. Read the original rules with the later 91st Amendment.
The Tenth Schedule’s paragraph 7 was invalidated for want of State ratification; the entire anti-defection scheme was not thereby invalidated.
Official sources
1988 · Draft study notes
61st Amendment: voting age
Lowered the constitutional voting age from 21 to 18.
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It sought wider participation of young citizens in the political process.
The change concerns adult suffrage for Lok Sabha and State Assembly elections under Article 326.
Key changes
- Substituted eighteen years for twenty-one years in Article 326.
- Changed voter eligibility, not the minimum age to contest elections.
Qualifications and commencement
Official Act title uses 1988; assent and commencement are 28 March 1989.
- This amendment alone does not establish every electoral eligibility requirement.
Official sources
1991 · Draft study notes
69th Amendment: National Capital Territory of Delhi
Created special constitutional arrangements for Delhi.
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It provided a constitutional basis for representative government in the national capital.
Delhi received an Assembly and Council of Ministers within a special Union-territory framework.
Key changes
- Inserted Articles 239AA and 239AB.
- Provided an Assembly, Council of Ministers and Lieutenant Governor framework.
Qualifications and commencement
Assent: 21 December 1991; commencement: 1 February 1992, recorded in the official Act reprint.
- Later legislation and constitutional judgments affect the working allocation of powers; that current case-law review remains pending.
Official sources
1992 · Draft study notes
73rd Amendment: Panchayats
Established a constitutional framework for rural local government.
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Irregular elections and weak Panchayats prompted constitutional safeguards.
Part IX sets a framework; State legislation gives practical effect to many powers and functions.
Key changes
- Inserted Part IX and the Eleventh Schedule; amended Article 280.
- Provided elections, reservations, State Election Commissions and Finance Commissions.
Qualifications and commencement
Act title: 1992; assent: 20 April 1993; commencement: 24 April 1993.
- Article 243M contains territorial exceptions. The Schedule does not automatically transfer all listed powers to every Panchayat.
Official sources
1992 · Draft study notes
74th Amendment: Municipalities
Established a constitutional framework for urban local government.
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Weak urban local bodies and delayed elections motivated institutional safeguards.
The amendment distinguishes types of municipalities and provides planning, electoral and financial arrangements.
Key changes
- Inserted Part IXA and the Twelfth Schedule; amended Article 280.
- Provided Nagar Panchayats, Municipal Councils and Municipal Corporations.
Qualifications and commencement
Assent: 20 April 1993; commencement: 1 June 1993. Do not confuse this with the 73rd Amendment’s commencement.
- Devolution depends on State law; territorial and industrial-township qualifications must be read with Part IXA.
Official sources
2002 · Draft study notes
86th Amendment: education
Made education for ages six to fourteen a fundamental right.
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The earlier Directive Principle had not achieved universal elementary education.
It separated the State’s enforceable education obligation, early-childhood efforts and parental duty.
Key changes
- Inserted Article 21A and substituted Article 45.
- Added the parental education duty in Article 51A(k).
Qualifications and commencement
Assent: 12 December 2002; commencement: 1 April 2010, corroborated by official Article footnotes.
- The implementing education law and its judicial qualifications require separate review; the amendment is not the entire education-law framework.
Official sources
2003 · Draft study notes
91st Amendment: ministerial limits and defection
Limited ministries and strengthened consequences of defection.
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It addressed oversized ministries and weaknesses in the anti-defection framework.
It linked ministerial size to the elected lower House and removed the split exception.
Key changes
- Set a 15% ministerial ceiling; State ministries have a minimum of twelve.
- Omitted Tenth Schedule paragraph 3 and inserted Article 361B.
Qualifications and commencement
Act title: 2003; assent and commencement: 1 January 2004; Gazette publication: 2 January.
- Apply the ceiling with its State minimum and transitional provisions, not an unqualified percentage alone.
Official sources
2011 · Draft study notes
97th Amendment: cooperative societies
Added constitutional provisions on cooperative societies, later limited judicially.
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The reform sought voluntary formation, autonomy, democratic control and professional management.
The rights amendment, Directive Principle and institutional Part must be considered separately.
Key changes
- Added cooperative societies to Article 19(1)(c) and inserted Article 43B.
- Inserted Part IXB, Articles 243ZH–243ZT.
Qualifications and commencement
Assent: 12 January 2012; Act title: 2011. Article 43B and Part IXB footnotes give 15 February 2012. Article 19 footnotes give 8 February while the catalogue gives 15 February generally; section 2 remains unresolved pending notification review.
- The majority held Part IXB operative only for multi-State cooperatives in States and Union territories. It does not cover societies confined to one State or one Union territory; the State-ratification defect was decisive.
Paragraphs 77–80 preserve Part IXB only for multi-State cooperatives, including in Union territories. The Article 19 and Article 43B changes survive.
Official sources
2014 · Draft study notes
99th Amendment: judicial appointments and NJAC
Proposed an NJAC-based appointments system; the amendment was invalidated.
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It sought a different institutional process for higher-judiciary appointments and transfers.
Understand the enacted design as constitutional history, with the court’s invalidation displayed prominently.
Key changes
- Inserted Articles 124A, 124B and 124C on the NJAC.
- Changed Supreme Court and High Court appointment and transfer provisions.
Qualifications and commencement
Assent: 31 December 2014; commencement: 13 April 2015. Commencement does not undo the later judicial invalidation.
- The Supreme Court invalidated the 99th Amendment on 16 October 2015. Official constitutional footnotes confirm this; full original-judgment review remains pending.
Official constitutional footnotes record that the 99th Amendment was struck down on 16 October 2015. This dataset does not present NJAC provisions as currently operative.
Official sources
2016 · Draft study notes
101st Amendment: constitutional framework for GST
Reallocated taxing powers to enable goods and services tax.
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It sought a coordinated framework replacing several indirect-tax arrangements.
Constitutional taxing competence is different from the later legislation that levies and administers GST.
Key changes
- Inserted Articles 246A and 269A on GST powers and inter-State supplies.
- Inserted Article 279A establishing the GST Council and adjusted tax provisions and Schedules.
Qualifications and commencement
Assent: 8 September 2016. Section 12: 12 September; other sections: 16 September 2016, supported by constitutional footnotes; original notifications still need archival review.
- GST has subject-specific and implementation qualifications, including excluded alcoholic liquor for human consumption and the special treatment of listed petroleum products; detailed case-law review is pending.
Official sources
2018 · Draft study notes
102nd Amendment: constitutional status for NCBC
Established constitutional provisions for the backward-classes commission and SEBC identification.
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It sought constitutional status for the National Commission for Backward Classes.
Commission functions and the identification of backward classes are separate questions; later interpretation and amendment must be included.
Key changes
- Inserted Article 338B on the NCBC.
- Inserted Article 342A and a definition in Article 366; amended Article 338.
Qualifications and commencement
Assent: 11 August 2018. Government reprints and catalogue differ on 14 versus 15 August for commencement; no blanket commencement date is asserted pending notification review.
- The Jaishri Patil majority interpreted the original identification scheme; the 105th Amendment later expressly provided for separate State/UT lists. Do not teach the original wording as unchanged current law.
The Article 342A majority interpretation is discussed in paragraphs 42–47 of Rajendra N. Shah. Read it with the later 105th Amendment; the original Jaishri Patil judgment still requires review.
Official sources
2019 · Draft study notes
103rd Amendment: economically weaker sections
Enabled additional reservation for eligible economically weaker sections.
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It introduced economic disadvantage as a basis for the specified reservation provisions.
The constitutional clauses enable measures; eligibility rules and implementation require the relevant law or order.
Key changes
- Inserted Articles 15(6) and 16(6).
- Enabled up to 10% additional reservation, with specified exclusions.
Qualifications and commencement
Assent: 12 January 2019; commencement: 14 January 2019, corroborated by official constitutional footnotes.
- Janhit Abhiyan upheld the amendment by a 3:2 majority. This does not certify every implementing rule or individual eligibility decision.
The 3:2 majority rejected the challenge to the 103rd Amendment. The majority and dissent must not be presented as the same holding.
Official sources
2019 · Draft study notes
104th Amendment: legislative representation
Extended SC/ST seat reservations without extending Anglo-Indian nomination.
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The earlier Article 334 period was approaching expiry.
It treated reserved seats and nominated representation differently instead of extending both for the same period.
Key changes
- Amended Article 334 to specify eighty years for SC/ST reserved seats.
- Retained seventy years for Anglo-Indian nomination provisions.
Qualifications and commencement
Official Act title: 2019; assent: 21 January 2020; publication: 22 January; commencement: 25 January 2020.
- The amendment did not extend Anglo-Indian nomination alongside the SC/ST reservation extension.
Official sources
2021 · Draft study notes
105th Amendment: State and Union-territory SEBC lists
Expressly enabled separate State and Union-territory backward-class lists.
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It followed the Article 342A interpretation in the Jaishri Patil decision.
It distinguishes the Central List from lists prepared by States and Union territories for their own purposes.
Key changes
- Amended Articles 338B, 342A and 366(26C).
- Inserted Article 342A(3) permitting State/UT lists that may differ from the Central List.
Qualifications and commencement
Assent: 18 August 2021; commencement: 15 September 2021, corroborated by official Article footnotes. Original scan review remains pending.
- It does not automatically add any community to a list or validate a particular reservation percentage.
The Article 342A majority interpretation is discussed in paragraphs 42–47 of Rajendra N. Shah. Read it with the later 105th Amendment; the original Jaishri Patil judgment still requires review.
Official sources
2023 · Draft study notes
106th Amendment: women’s legislative representation
Provides for women’s reserved seats, subject to constitutional implementation conditions.
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It sought greater representation of women in directly elected legislatures.
Act commencement and actual operation of reserved seats are different events under Article 334A.
Key changes
- Amended Article 239AA and inserted Articles 330A and 332A for approximately one-third reserved seats.
- Inserted Article 334A on census-linked delimitation, duration and rotation.
Qualifications and commencement
Assent: 28 September 2023; commencement: 16 April 2026, corroborated by the official Constitution as on 1 May 2026. The Gazette notification could not be retrieved in this review; commencement alone does not activate reserved seats.
- Operation requires publication of relevant figures from the first census after commencement and delimitation for this purpose. Article 334A and section 6 also protect existing representation; no implementation-completed claim is made here.
Official sources