GST and India’s Federal Structure: A Deep-Dive into Its Federalism Impact
Introduction
The introduction of the Goods and Services Tax (GST) through the Constitution (One Hundred and First Amendment) Act, 2016 marked one of the most significant overhauls of India’s indirect tax system. With effect from 1 July 2017, GST consolidated a wide array of central and state-level indirect levies into a unified tax framework, fundamentally altering the fiscal relationship between the Union and the States.
While the stated policy objective was to create a seamless national market and eliminate cascading taxes, the reform has also recalibrated the contours of Indian federalism, especially in the realm of fiscal autonomy and revenue-raising powers of the States.
This article examines how GST has affected India’s quasi-federal structure, the role and functioning of the GST Council, the gains and sacrifices for States in terms of fiscal powers, and the evolving balance between cooperative and competitive federalism under the GST regime.
Federalism in India: Context and Constitutional Design
Quasi-federal character and division of powers
India’s Constitution establishes a system often described as “quasi-federal,” with a clear division of legislative and fiscal competence between the Union and the States. The Seventh Schedule allocates subjects to the Union List, State List, and Concurrent List, thereby demarcating fields of legislation.
An essential component of this framework is fiscal federalism, which determines how taxing and spending responsibilities are shared across levels of government. Before the advent of GST, both the Union and the States enjoyed distinct and separate taxation domains, particularly in the area of indirect taxes.
Pre-GST indirect tax regime for States
Prior to GST, States had relatively broad latitude to design and implement various indirect taxes within their jurisdiction. These included:
- Value Added Tax (VAT) on sale of goods
- Entry tax or octroi on the entry of goods into local areas
- Luxury tax
- Entertainment and amusement tax (except those covered by local bodies in some cases)
States could independently modify tax rates, exemptions, and structures, subject only to constitutional limitations and central legislation in certain areas. This provided them with a significant degree of fiscal autonomy as well as a tool for regional economic policy.
Structural Transformation under GST
Dual GST model: CGST, SGST and IGST
The introduction of GST replaced multiple central and state indirect taxes with a dual GST model, premised on concurrent taxation powers over the same transaction by both the Union and the States. The structure includes:
- Central Goods and Services Tax (CGST) – levied by the Union 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) – levied by the Union on inter-State supplies, later apportioned between the Centre and the destination State
This changed the previous regime where Union and States operated in largely separate spheres (e.g., Union taxing services and manufacture, States taxing sale of goods). Under GST, both levels tax the same base, and crucially, must align on rates and structures through a common decision-making mechanism.
Redefining the fiscal compact
By moving from segmented tax domains to a shared tax base, GST has:
- Curtailed independent rate-setting powers of States on many major indirect taxes
- Increased the need for intergovernmental coordination
- Made States structurally more dependent on central mechanisms such as
IGSTsettlements and compensation arrangements
This shift lies at the heart of debates on whether GST has diluted or strengthened India’s federal character.