Nine Years of GST in India: Revenue Milestones, Structural Reforms & the Road to GST 2.0

Introduction: A Landmark Shift in India's Indirect Taxation

When the Goods and Services Tax came into force on 1st July 2017, it fundamentally restructured how India levied indirect taxes. The long-standing fragmentation across Central and State-level levies gave way to a single, unified framework built on the principle of "One Nation, One Tax." What followed over the next nine years was not merely administrative consolidation — it was a living reform process that evolved with the economy, responded to business needs, and progressively embraced digital governance.

Today, as India marks nine years of GST, the story is one of expanding assessee bases, rising revenue collections, technology-led compliance, and the emergence of GST 2.0 — a next-generation reform package designed to deepen the gains of the original rollout.

The Problem GST Was Built to Solve

Before GST, India's indirect tax landscape was layered and complex. At the Central level, there were levies such as Central Excise Duty, Service Tax, and Customs Duties. States imposed their own Value Added Tax, Entry Tax, Octroi, and Entertainment Tax, among others. In total, 17 distinct taxes and 13 Cesses operated simultaneously, each with its own compliance mechanism, rate structure, and administrative apparatus.

The consequences were significant:

  • Cascading taxation, commonly referred to as "tax on tax," inflated costs across supply chains
  • Divergent rate structures across States created barriers to seamless interstate commerce
  • Compliance burdens were disproportionately high for smaller businesses
  • Hidden embedded taxes reduced the competitiveness of Indian goods in both domestic and export markets

GST addressed these issues structurally. By consolidating the indirect tax base into a single framework applicable on the supply of goods and services, it eliminated the layered cost build-up that had characterised the earlier regime.

Core Architecture of the GST Framework

Supply-Based Taxation

Unlike the earlier regime where tax points varied — manufacture for excise, sale for VAT, provision for service tax — GST standardised the taxable event as the "supply" of goods or services. This brought consistency and reduced definitional disputes.

Destination-Based Consumption Tax

GST operates as a destination-based tax, meaning revenue accrues to the State where goods or services are finally consumed, rather than where they are produced or sold. This was a significant departure from the origin-based logic of earlier State-level taxes.

Dual GST Structure

The framework follows a dual levy model:

  • Central Goods and Services Tax (CGST) — levied by the Centre on intra-State supplies
  • State Goods and Services Tax (SGST) — levied by the respective State on intra-State supplies
  • Integrated Goods and Services Tax (IGST) — applicable on all inter-State transactions, with IGST rates generally set at 2x the CGST/SGST rate

Coverage and Exclusions

GST applies broadly across goods and services. However, alcoholic liquor for human consumption remains outside its scope. Additionally, five specific goods may be brought under GST upon approval by the GST Council.

The GST Council: Cooperative Federalism in Practice

A structurally distinctive feature of the GST architecture is the GST Council — a statutory body that brings together the Union and all State Governments in a shared decision-making forum. The Council has been central to the success of GST as a cooperative federal initiative.