Goods and Services Tax (GST)

The Goods and Services Tax (GST) is a comprehensive, destination-based indirect tax on the supply of goods and services that replaced a fragmented architecture of central and state levies when it took effect on 1 July 2017. Its legal foundation is the Constitution (One Hundred and First Amendment) Act, 2016, which inserted Article 246A granting Parliament and state legislatures concurrent power to tax supplies, Article 269A governing the levy and apportionment of tax on inter-state trade, and Article 279A mandating the creation of the GST Council. The amendment subsumed central levies such as central excise duty, service tax, and additional customs duties, and state levies including value-added tax (VAT), entry tax, luxury tax, and octroi. The operative statutes are the Central Goods and Services Tax Act, 2017, the Integrated Goods and Services Tax Act, 2017, the Union Territory GST Act, 2017, and the GST (Compensation to States) Act, 2017, supplemented by parallel State GST Acts enacted by each legislature. The conceptual lineage traces to the 2003 Kelkar Task Force and the empowered committee of state finance ministers that drafted the first discussion paper in 2009.

Procedurally, GST operates on a dual model in which a single taxable event—the supply of goods or services—attracts two simultaneous components on intra-state transactions: Central GST (CGST), collected by the Union, and State GST (SGST), collected by the state where consumption occurs. For inter-state supplies and imports, a single Integrated GST (IGST) applies, levied and collected by the Centre under Article 269A and subsequently apportioned to the destination state. A registered supplier issues a tax invoice, charges the applicable rate, and remits the net liability after offsetting input tax credit. The destination principle ensures revenue accrues to the consuming jurisdiction rather than the producing one, reversing the origin-based logic of the older central sales tax.

The defining mechanic is the seamless input tax credit chain, which permits a taxpayer to set off tax paid on inputs against tax due on outputs, thereby eliminating the cascading "tax on tax" that characterised the pre-2017 regime. Compliance is administered through the Goods and Services Tax Network (GSTN), a digital backbone on which returns such as GSTR-1 (outward supplies), GSTR-3B (summary return), and the auto-populated GSTR-2B are filed. Tax slabs are tiered at 0, 5, 12, 18, and 28 percent, with a compensation cess on demerit and luxury goods such as tobacco and automobiles. A composition scheme offers small taxpayers below a turnover threshold a flat, simplified rate without input credit. The e-way bill system governs the movement of consignments above a value threshold, and e-invoicing has been progressively mandated for larger firms.

The institutional fulcrum is the GST Council, chaired by the Union Finance Minister with state finance ministers as members, which under Article 279A recommends rates, exemptions, thresholds, and model laws. Decisions require a three-fourths majority of weighted votes, with the Centre holding one-third and the states collectively two-thirds, a design intended to prevent unilateral central action. By its fifty-third meeting in June 2024, convened in New Delhi under Finance Minister Nirmala Sitharaman, the Council had rationalised numerous rates and addressed sectors from online gaming—on which a 28 percent levy on full face value took effect in October 2023—to extra-neutral alcohol. Monthly gross collections crossed ₹2 lakh crore for the first time in April 2024, a benchmark cited by the Ministry of Finance as evidence of buoyancy and improved compliance.

GST must be distinguished from its predecessor, the state-level value-added tax (VAT), which applied only to goods within a single state and left services to the separate central service tax; GST unifies both bases nationally. It also differs from customs duty, which survives as a border levy on imports alongside IGST, and from direct taxes such as income tax that fall on earnings rather than consumption. Unlike the cess and surcharge instruments retained by the Centre, GST revenue is constitutionally shared, and unlike the pre-2017 central sales tax, it is destination-based rather than origin-based. The compensation mechanism—guaranteeing states 14 percent annual revenue growth for five years from 2017—was a transitional bargain distinct from the permanent vertical devolution recommended by the Finance Commission.

Controversies have centred on fiscal federalism and design complexity. The five-year compensation guarantee lapsed in June 2022, leaving several states demanding extension amid pandemic-era shortfalls; the Centre borrowed and devolved funds in 2020–21 to bridge the gap. Petroleum products, electricity, and alcohol for human consumption remain outside GST, preserving a parallel tax system and denying input credit across the divide. The classification disputes—famously over whether a product is a "khari" biscuit or a "papad," or the GST treatment of pre-packaged foods—illustrate persistent rate ambiguity, and the GST Appellate Tribunal's delayed operationalisation left taxpayers without a dedicated forum for years. Reform proposals to collapse the 12 and 18 percent slabs into a single rate recur in Council deliberations.

For the working practitioner—whether a UPSC aspirant addressing GS Paper III, a fiscal-policy researcher, or a journalist covering Union–state relations—GST is the central case study in cooperative and contested federalism in contemporary India. It demonstrates how a constitutional amendment can pool sovereignty into a shared institution while generating new fault lines over revenue autonomy. Mastery requires holding together the legal architecture, the credit-chain economics, and the political economy of the Council's bargaining, since examination questions and policy debates alike turn on the interplay of these dimensions rather than on the rate schedule alone.