The rollout of the Goods and Services Tax (GST) in July 2017 marked the most extensive structural overhaul of India's fiscal federalism, subsuming 17 distinct central and state levies along with 13 cesses into a single indirect taxation architecture. Designed to eliminate the cascading tax-on-tax effect, establish a unified national market, and accelerate economic formalization, the original GST regime was constructed around a four-tier rate structure comprising 5%, 12%, 18%, and 28% tax slabs, supplemented by special reduced rates for precious metals and an additional Compensation Cess on select luxury and sin goods. While this multi-tiered framework was politically essential at inception to achieve revenue neutrality and protect low-income consumption, over time it introduced operational frictions, tax classification disputes, and severe structural distortions.