Critically examine the rationale and likely economic impact of the two-slab GST rate structure introduced in 2025.

The 56th GST Council meeting (3 September 2025) collapsed the four-rate structure of 5/12/18/28% into a two-slab regime of 5% and 18%, with a 40% special rate on sin and luxury goods, effective 22 September 2025 [1][3]. The reform corrects a long-criticised design flaw, but its fiscal and federal costs merit scrutiny.

Rationale behind the shift

• Simplification: multiple slabs bred classification disputes and litigation; a two-rate structure makes taxation more transparent and predictable [1].
• Consumption relief: staples were made tax-free and processed foods, medicines, diagnostic kits and stationery moved to nil/5% [2].
• Equity and revenue balance: a 40% de-merit rate on pan masala, tobacco, aerated drinks, high-end cars and yachts preserves progressivity [3].
• Compliance easing: streamlined registration and returns, provisional refunds for inverted duty claims, and operationalisation of the GSTAT to reduce appeal backlogs [1].

Likely positive impact

• Lower effective rates raise disposable incomes, supporting demand in mass-consumption sectors such as textiles, footwear and food processing [2].
• Correction of inverted duty structures through faster refunds releases working capital for MSMEs [1].
• Fewer rate boundaries mean fewer classification disputes, improving voluntary compliance and tax buoyancy over the medium term.

Critical concerns

• Revenue risk: rate cuts imply a significant short-term revenue sacrifice, borne largely by States after the compensation window lapsed — a live federal friction point.
• Incomplete simplification: the 40% rate is effectively a third slab, and tobacco products remain on old rates until compensation cess loan liabilities are discharged [4].
• Uncertain pass-through: benefits reach consumers only if producers do not retain margins.
• Institutional limits: Council recommendations carry only persuasive value (Union of India v. Mohit Minerals, 2022) [5], so uniform implementation depends on sustained political consensus.

On balance, the reform is a welcome move from a fragmented to a rational indirect tax design. Its success now hinges on revenue monitoring, effective dispute resolution through GSTAT, and a credible State-compensation mechanism — so that Article 279A functions as a genuine engine of cooperative federalism.