Important Constitutional Amendments Every UPSC Aspirant Must Know 2026

The Indian Constitution has been amended more than a hundred and five times, and somewhere in your preparation you have probably tried to memorise the lot, given up around the fortieth, and quietly hoped the Commission would not ask. The good news is that you do not need all of them. A small cluster of amendments carries almost all the exam weight, and each of them tells a story large enough to anchor both a Prelims statement and a Mains argument. With the 2026 Prelims already written on 24 May 2026 and the next cycle pointing toward 23 May 2027, the sensible move now is to stop treating amendments as a list to be crammed and start treating them as a sequence of constitutional turning points, each with a number, a year, a purpose and a consequence you can recall in seconds. This article walks through the amendments that recur in the question papers and shows you how to hold each one with the kind of precision that survives the four-second decision you make under exam pressure.

Why amendments are a high-yield topic

Article 368 gives Parliament the power to amend the Constitution, and the way that power has been used is itself a map of independent India's political history. Every major amendment is a response to a problem the country faced — land reform, the Emergency, decentralisation, the demands of a market economy, the question of who gets reserved seats. Because each amendment is tied to a real moment, examiners can test it from several angles at once: the article it inserted, the schedule it created, the right it added or curtailed, the case law it triggered. A single well-understood amendment therefore answers a whole family of possible questions, which is why this is among the highest-return areas in the entire Polity syllabus.

The 42nd Amendment, 1976: the mini-Constitution

No amendment is tested more often than the 42nd, passed during the Emergency and so sweeping in scope that it earned the nickname the mini-Constitution. It added the words socialist, secular and integrity to the Preamble, changing the self-description of the Republic in ways that still surface in debate today. It introduced the Fundamental Duties in a new Part IVA through Article 51A, acting on the recommendation of the Swaran Singh Committee. It extended the term of the Lok Sabha and the state assemblies from five years to six. It tried to give the Directive Principles primacy over the Fundamental Rights in Articles 14, 19 and 31 by expanding Article 31C, and it sought to curtail the power of judicial review. It also transferred several subjects, including education, forests, and the protection of wild animals and birds, from the State List to the Concurrent List, a shift whose consequences for centre-state relations are still examined.

The reason the 42nd is so heavily tested is that much of it was undone, and the contrast between what it attempted and what survived is rich exam material. Remember it as the amendment that tried to tilt the constitutional balance toward Parliament and the executive, and that the courts and a later Parliament pushed much of that tilt back.

The 44th Amendment, 1978: the correction

Enacted after the Emergency by the government that had campaigned against its excesses, the 44th Amendment is best understood as the deliberate reversal of the 42nd. It restored the terms of the Lok Sabha and the state assemblies to five years. It removed the right to property from the list of Fundamental Rights, relocating it to Article 300A as an ordinary constitutional right, which means that the deprivation of property now requires the authority of law but is no longer a ground for moving the Supreme Court under Article 32. It strengthened safeguards against the misuse of Emergency provisions, replacing internal disturbance with armed rebellion as a ground for a national Emergency under Article 352 and requiring the proclamation to be supported in writing by the Cabinet. It also restored some of the judicial review powers the 42nd had tried to weaken.

For the exam, the pairing to lock in is that the 44th removed property as a Fundamental Right and tightened the Emergency provisions. Both points are perennial favourites, and candidates routinely confuse which amendment did what, so anchor the 42nd as the Emergency-era expansion and the 44th as the post-Emergency correction.

The 73rd and 74th Amendments, 1992: democracy at the grassroots

These twin amendments gave constitutional status to local self-government and are usually tested together. The 73rd Amendment dealt with rural local bodies, inserting Part IX, creating the Eleventh Schedule with twenty-nine subjects that may be devolved to panchayats, and establishing a three-tier structure of panchayats at the village, intermediate and district levels, with regular elections, reservations for Scheduled Castes, Scheduled Tribes and women, and a State Finance Commission and State Election Commission to support them. The 74th Amendment did the parallel work for urban local bodies, inserting Part IXA, creating the Twelfth Schedule with eighteen subjects, and giving constitutional recognition to municipalities in their various forms.

The numbers are the trap here, and the Commission knows it. Keep them straight by remembering that the 73rd is rural, with the Eleventh Schedule and twenty-nine subjects, while the 74th is urban, with the Twelfth Schedule and eighteen subjects. Both made local-body elections a constitutional requirement rather than a matter of state discretion, which is the conceptual point that a Mains answer on decentralisation should foreground.

The 86th Amendment, 2002: education becomes a right

The 86th Amendment is the constitutional hinge in the long story of the right to education. It inserted Article 21A, making free and compulsory education for children between the ages of six and fourteen a Fundamental Right. It recast the Directive Principle in Article 45 to focus on early childhood care and education for children below the age of six, and it added a corresponding Fundamental Duty under Article 51A obliging parents and guardians to provide opportunities for education. The amendment was given operational effect by the Right of Children to Free and Compulsory Education Act of 2009.

This amendment is worth knowing in depth because it connects three parts of the Constitution at once and shows how a non-justiciable principle can mature into an enforceable right, a theme examiners love. When you revise it, mentally tie it to the Unni Krishnan judgment that preceded it and the Right to Education Act that followed, so that the amendment sits inside a sequence rather than floating alone.

The 101st Amendment, 2016: the goods and services tax

The 101st Amendment created the constitutional architecture for the Goods and Services Tax, the most significant indirect-tax reform since independence. It inserted Article 246A, giving both Parliament and the state legislatures concurrent power to make laws on GST. It introduced Article 269A to govern the levy and apportionment of GST on inter-state trade, and it created the GST Council under Article 279A as a joint forum of the Union and the states to make recommendations on rates, exemptions and administration. It subsumed a tangle of central and state levies into a single tax and embodied a new model of cooperative federalism in fiscal matters.

For the exam, the three articles to remember are 246A, 269A and 279A, and the conceptual label is fiscal federalism. The GST Council in particular is a recurring Prelims subject because its composition, its weighted voting and its recommendatory nature are all examinable details.

The 103rd Amendment, 2019: economically weaker sections

The 103rd Amendment introduced a ten per cent reservation in education and public employment for the economically weaker sections among citizens who are not already covered by existing reservations for Scheduled Castes, Scheduled Tribes and Other Backward Classes. It did so by amending Articles 15 and 16 to add enabling clauses. The amendment is significant because it introduced economic criteria as a basis for reservation for the first time, a departure from the social and educational backwardness that had previously grounded affirmative action, and because its constitutional validity was upheld by the Supreme Court, which examined whether economic criteria alone could justify reservation and whether the move breached the basic structure.

When you revise this amendment, pair it with the broader debate about the ceiling on reservations and the question of whether economic disadvantage is a legitimate standalone basis, because Mains questions on social justice frequently route through exactly this terrain.

The 105th Amendment, 2021: states and backward classes

The 105th Amendment restored the power of state governments to identify and maintain their own lists of socially and educationally backward classes. It was a response to a judicial reading of the earlier 102nd Amendment, which had been interpreted to mean that only the Union could specify such lists. The 105th clarified that states retain this authority. The detail to carry is the relationship between the 102nd Amendment, which created the National Commission for Backward Classes as a constitutional body, and the 105th, which corrected the unintended consequence of that earlier change by confirming the states' role.

The 106th Amendment, 2023: women's reservation

The most recent of the amendments you must know is the 106th, which enacted the Nari Shakti Vandan Adhiniyam to reserve one-third of the seats in the Lok Sabha, the state legislative assemblies and the Legislative Assembly of the National Capital Territory of Delhi for women. The reservation is to take effect after a delimitation exercise carried out on the basis of the first census conducted after the amendment comes into force, which means its implementation is tied to future steps rather than being immediate. For the exam, hold both the substance, a one-third reservation for women in the lower house and the assemblies, and the conditionality, that it operates after a fresh census and delimitation.

The procedure that makes amendments possible

Before the individual amendments make full sense, you should be secure on the machinery of Article 368 itself, because the procedure is tested as often as the content. The Constitution provides for three kinds of change. Some provisions can be altered by a simple majority of Parliament, in the same way as ordinary legislation, and these are technically not even counted as amendments under Article 368 — the creation of new states and the alteration of their boundaries is the standard example. The bulk of the Constitution is amended by a special majority, meaning a majority of the total membership of each house together with a two-thirds majority of the members present and voting. A third and most demanding category requires that special majority plus ratification by the legislatures of at least half the states, and it applies to provisions that touch the federal structure, such as the election of the President, the distribution of legislative powers between the Union and the states, and the representation of states in Parliament.

Layered on top of this procedure is the limit the judiciary has read into it. The basic structure doctrine, born in Kesavananda Bharati and reaffirmed in Minerva Mills and later cases, means that Parliament's amending power, however wide, cannot be used to destroy the essential features of the Constitution — its supremacy, the republican and democratic form of government, secularism, the separation of powers, federalism, judicial review and the rule of law. The 99th Amendment, which created the National Judicial Appointments Commission to change the way judges are appointed, was struck down on precisely this ground, the Court holding that it compromised the independence of the judiciary. Knowing both the procedure and its outer limit lets you answer the procedural questions the Commission likes to slip in among the content-based ones.

A few foundational amendments worth a mention

Beyond the headline cluster, a handful of early amendments recur often enough to deserve a place in your notes. The First Amendment of 1951 added the Ninth Schedule and the reasonable-restrictions clauses to the freedom of speech, setting the template for the long contest between rights and redistributive laws. The 24th Amendment of 1971 affirmed Parliament's power to amend any part of the Constitution and made the President's assent to a constitution amendment bill obligatory, a provision examined in Kesavananda Bharati. The 25th Amendment of the same year introduced Article 31C in its original form. The 52nd Amendment of 1985 added the Tenth Schedule, the anti-defection law, which is among the most frequently tested provisions in the entire document because of its bearing on the stability of governments. You do not need to memorise these as deeply as the headline amendments, but recognising them when they appear in an option will keep you from eliminating a correct answer by mistake.

How to hold the whole set in memory

The mistake aspirants make is to try to memorise amendments in numerical order, which produces a flat list with no structure. A far better approach is to group them by theme. The 42nd and 44th form a pair about the Emergency and its reversal. The 73rd and 74th form a pair about local self-government. The 86th sits with the right-to-education story. The 101st belongs to the economic-reform cluster alongside fiscal federalism. The 103rd, 105th and the earlier 102nd belong to the reservation-and-social-justice cluster. Once you see the amendments as members of these families, each one carries the context of its neighbours, and recall becomes a matter of reconstructing a small story rather than retrieving an isolated number.

How this is tested

In Prelims, expect single-line matching of amendment numbers to their content, with the most common trap being the swapping of paired amendments — attributing the urban municipalities to the 73rd or the property-right deletion to the 42nd. Statement-based questions also test the schedules, asking you to connect the Eleventh Schedule to panchayats and the Twelfth to municipalities, or to identify which articles GST inserted. In Mains, amendments rarely appear as a standalone question; instead they are the evidence you marshal inside larger answers on federalism, social justice, decentralisation or the evolution of rights. The candidate who can cite the precise amendment, its year and its effect inside a wider argument signals a command of the subject that a vague reference cannot.

The trap to avoid

Do not let recent amendments crowd out the older landmarks. It is tempting, in a current-affairs-driven preparation, to over-focus on the 103rd, 105th and 106th because they feel fresh, but the 42nd, 44th, 73rd and 74th remain the most frequently tested precisely because they are foundational. Give the older amendments at least as much revision time as the newer ones, and make sure you can state not just what each did but why it was needed and what followed from it.

What to do tomorrow morning

Take a single sheet and write the amendments in five thematic clusters rather than in numerical order, putting beside each one its year, the article or schedule it touched, and a three-word summary of its effect. Recite the sheet aloud once, then cover it and try to rebuild it from the cluster headings alone. If you can regenerate the whole map from five headings, you will never again freeze on an amendment question, because you will be reconstructing a structure instead of fishing for a fact.

This article is part of Ease My Prep's Polity essentials series, where we turn the parts of the syllabus everyone tries to memorise into frameworks you can actually reason from in the exam hall.