Constitution (One Hundred and First Amendment) Act 2016

The Constitution (One Hundred and First Amendment) Act 2016, commonly referred to as the GST Amendment, inserted Article 246A and a new entry in Schedule VII of the Indian Constitution, thereby creating a unified, destination‑based indirect tax regime—Goods and Services Tax (GST). By subsuming a disparate set of central and state levies into a single tax structure, the amendment eliminated the historic “tax on tax” cascade, marking the most extensive fiscal reform in independent India’s history.

Historical Background

The push for a comprehensive indirect tax reform began in the early 1990s, when the Narasimha Rao government set up the Tax Reforms Committee (1995) that first recommended a unified tax. Subsequent expert panels—including the 2006 Empowered Committee on GST chaired by Dr V S Raman—refined the design, proposing a dual GST model to respect India’s federal structure. Political consensus coalesced after the 2014 general election, when the Union Finance Ministry, led by Arun Jaitley, introduced the GST Bill in Parliament on 12 December 2016. Both houses passed the amendment on 29 September 2016, and President Pranab Mukherjee gave his assent on 8 September 2016. The law became operative on 1 July 2017, after a six‑month transition period for states to align their own tax codes.

Key Provisions

Article 246A authorises the Parliament and the legislatures of the states to make laws with respect to GST, while preserving the dual nature of the tax: Central GST (CGST) and State GST (SGST) on intra‑state supplies, and Integrated GST (IGST) on inter‑state supplies. Schedule VII was amended to include “tax on supply of goods and services” as a new entry, thereby removing the previous limitation that only “taxes on income” could be levied by the Union. The amendment also introduced Article 279A, establishing the GST Council—a constitutional body chaired by the Union Finance Minister and comprising the Minister of State for Finance and the Finance Ministers of all states and union territories. The Council is empowered to recommend tax rates, thresholds, and special provisions; its decisions require a three‑fourths majority of the members present.

Mechanism of the GST Regime

Under the GST framework, every taxable transaction is subject to a single rate, but the tax is split between the centre and the consuming state. For intra‑state sales, the seller collects CGST and SGST in the proportion prescribed by the Council; for inter‑state sales, IGST is collected, which is later apportioned between the centre and the destination state. The Act introduced a comprehensive filing system: taxpayers must obtain a Goods and Services Tax Identification Number (GSTIN), file monthly returns (GSTR‑1, GSTR‑3B), and reconcile input tax credits across the three tax components. The GST Council, as of 2024, has fixed five primary slabs—0 %, 5 %, 12 %, 18 % and 28 %—with additional cess on luxury and petroleum products.

Implementation and Current Status

At launch, the GST subsumed 17 central taxes (including Central Excise, Service Tax, and Countervailing Duty) and 9 state taxes (such as Value‑Added Tax, Luxury Tax, and Entertainment Tax). By the end of FY 2023‑24, GST collections reached ₹1.13 lakh crore, accounting for roughly 7 % of India’s total tax revenue. Compliance has risen steadily; the number of registered taxpayers grew from 1.2 million in 2017 to over 1.9 million by 2024, reflecting expanding formalisation of the economy. The GST Network (GSTN), a private‑sector consortium, now processes more than 2 billion invoices per month, enabling near‑real‑time monitoring of tax flows. Periodic revisions—such as the 2020 reduction of the 28 % slab to 18 % for certain goods—demonstrate the Council’s active role in fine‑tuning the regime.

Significance

The 101st amendment reshaped India’s fiscal architecture by aligning tax incidence with consumption, thereby removing the cascading effect that previously inflated product prices. It also fostered a more level playing field for businesses, as the uniform tax base reduced compliance costs and facilitated interstate trade. Moreover, the constitutionalisation of the GST Council institutionalised a cooperative federalism model, granting states a decisive voice in tax policy while preserving national revenue stability. The reform’s impact is evident in the rise of e‑commerce, the growth of the formal sector, and the increased transparency of tax administration—outcomes that continue to influence India’s economic trajectory.