Macroeconomic Impact of the Goods and Services Tax on the Indian Economy: Fiscal Formalization, Logistics Optimization, and Sectoral Rebalancing

Abstract

The implementation of the Goods and Services Tax (GST) on July 1, 2017, marked the most comprehensive indirect tax transformation in modern Indian economic history, establishing a unified national market. Evaluating GST's multi-dimensional macroeconomic impact over its octennial lifecycle, this report utilizes fiscal statistics, econometric literature, and firm-level data to analyze revenue buoyancy, supply chain efficiencies, and price dynamics. Findings demonstrate that digital compliance architectures such as e-invoicing and e-way bills helped double gross annual collections to a record ₹22.08 lakh crore in FY25 (averaging ₹1.84–₹2.0 lakh crore monthly) while expanding active taxpayers from 60 lakh to over 1.52 crore. Net GST collections grew from 5.6% of GDP in FY19 to 6.1% in FY24. Econometrically, eliminating state border check posts reduced logistics costs by ~20%, optimizing hub-and-spoke warehousing. Despite brief initial inflationary shocks, the medium-to-long-term trajectory reflects price convergence and improved manufacturing competitiveness. Looking ahead, the structural transition toward "GST 2.0" featuring a streamlined two-tier rate structure (5% and 18%) alongside a 40% de-merit rate is projected to lower household GST liabilities by 10%–16%, cementing macroeconomic stability.