GST vs VAT: What's the Difference?
A single national tax vs a patchwork of state taxes
Before July 2017, India taxed goods and services through a fragmented system: state-level VAT (Value Added Tax) on goods, central excise duty on manufacturing, service tax on services, plus entry tax, octroi, and various local levies — each with different rates and rules across states. GST replaced this entire patchwork with a single, unified tax structure applied uniformly nationwide, while VAT itself was one of the taxes GST subsumed.
How VAT worked
VAT was a state-level tax on the sale of goods, with each state setting its own rates, forms, and compliance procedures. A business selling the same product in Delhi and Karnataka could face different VAT rates and entirely separate registration and filing obligations in each state — creating friction for any business operating across state lines, and effectively taxing inter-state movement of goods multiple times through Central Sales Tax (CST) plus entry taxes at state borders.
How GST is structured differently
GST applies a single, nationwide rate structure (0%, 5%, 18%, 40% under GST 2.0) to both goods and services, split via CGST/SGST for intra-state transactions or IGST for inter-state ones — see our detailed CGST, SGST and IGST guide. This uniformity means a business selling nationally follows one rate table and one online filing system (the GST Portal) instead of negotiating dozens of state-specific VAT regimes.
What GST doesn't cover
A few categories remain outside GST and are still taxed under the older excise/VAT-style regime at the state level: petrol, diesel, natural gas, aviation turbine fuel, and alcohol for human consumption. These sit outside GST for now, pending future Council decisions to potentially bring them under the unified structure.
Practical impact for businesses
For a business, the shift from VAT to GST meant: one registration (GSTIN) instead of multiple state VAT registrations, one online return-filing system instead of state-specific portals, seamless ITC across the supply chain including inter-state purchases, and simpler logistics since goods no longer face state-border checkpoints for tax purposes. Try the Standard GST Calculator to see how a modern GST-inclusive price is computed compared to the old cascading VAT-plus-CST approach.