Introduction
Introduced through the 101st Constitutional Amendment Act, 2016, the Goods and Services Tax (GST) subsumed 17 central and state indirect taxes to forge a unified national market under Article 246A. While it restructured India's fragmented fiscal landscape by establishing the principle of 'One Nation, One Tax', structural complexities and compliance frictions continue to challenge its optimal implementation.
Key Achievements of GST
GST has delivered foundational structural shifts in India's fiscal administration, formalising business transactions and breaking down interstate trade barriers.
- Revenue Buoyancy and Tax Base Expansion: Monthly collections crossed a record landmark of ₹2.10 lakh crore in April 2024. The formalisation of business activities widened the registered taxpayer base from approximately 66 lakh at inception to more than 1.4 crore entities.
- Logistics and Supply Chain Efficiency: The introduction of digital e-way bills eradicated state border check-posts, drastically cutting down commercial freight transit times and reducing domestic supply-chain logistics costs.
- Institutionalisation of Cooperative Federalism: Operationalised under Article 279A, the GST Council established a joint decision-making forum between the Union and the States, with nearly all decisions reached via consensus.
- Mitigation of Tax Cascading: A seamless input tax credit mechanism across goods and services substantially alleviated the historical 'tax-on-tax' cascading effect.
Structural and Compliance Challenges
Despite significant strides, structural distortions and compliance burdens prevent GST from functioning as an efficient single indirect tax.
- Multiple Rate Slabs and Classification Disputes: A multi-tiered structure (5%, 12%, 18%, and 28%, along with special rates and cesses) creates classification ambiguities, prolonged litigation, and inverted duty structures across sectors such as textiles and electronics.
- Heavy Compliance Burden on MSMEs: Complex Input Tax Credit (ITC) matching rules, stringent anti-evasion mandates, and frequent return filing impose disproportionate administrative costs on Micro, Small, and Medium Enterprises.
- Exclusion of Key Sectors: Major revenue-generating commodities—petroleum crude, motor spirits, high-speed diesel, natural gas, aviation turbine fuel, electricity, and potable alcohol—remain outside GST, breaking the credit continuum and sustaining cost distortions.
- Emerging Federal Strains: The cessation of the guaranteed revenue compensation cess mechanism in June 2022 reduced fiscal cushions for states. Furthermore, the Supreme Court's ruling in the Union of India v. Mohit Minerals (2022) affirmed that GST Council recommendations are persuasive rather than binding, testing fiscal cohesion.
Way Forward Towards 'GST 2.0'
To realise the intended potential of GST, the regime requires structural consolidation and administrative simplification.
- Slab Rationalisation: Consolidating the rate architecture into a simplified three-tier structure will mitigate classification disputes and correct inverted duty structures.
- Broadening the Tax Net: Phased inclusion of natural gas, aviation turbine fuel, and electricity will restore the full input tax credit chain across manufacturing and logistics.
- Institutional Dispute Resolution: Expeditious operationalisation of the GST Appellate Tribunal (GSTAT) benches will decongest High Courts and resolve long-pending disputes efficiently.
Conclusion
GST represents a watershed moment in India's fiscal federalism and formal economic integration. Moving forward to 'GST 2.0' requires rationalising rates, lowering compliance costs for small enterprises, and strengthening trust within the GST Council to achieve a truly seamless, efficient tax environment.