Updated for GST 2.0 (effective 22 September 2025) • Last updated: February 2026
Add GST to a net price or extract GST from a gross price — with CGST/SGST split. Works as VAT calculator too
Adding GST is straightforward: Gross = Net × (1 + rate ÷ 100). An 18% GST on ₹10,000 gives ₹1,800 tax and ₹11,800 total. Removing GST (reverse calculation) trips people up: you divide, not subtract — Net = Gross ÷ (1 + rate ÷ 100). From an ₹11,800 invoice at 18%, the net is ₹10,000 and the tax ₹1,800. Subtracting 18% of 11,800 would give the wrong answer. This calculator handles both directions with one click.
The Indian GST slabs — 0%, 5%, 18% and 40% — are available as preset buttons, and the result shows the CGST + SGST split (half each) needed on intra-state invoices. Any custom rate works too, which makes this equally useful as a VAT calculator (UK 20%, UAE 5%, EU rates) or a sales tax calculator for any country.
India's biggest tax overhaul since 2017 replaced the old four-slab system (5%, 12%, 18%, 28%) with a simpler structure. The 12% and 28% slabs were abolished: most 12% items moved down to 5%, most 28% items moved to 18%, and a new 40% slab was introduced for luxury and sin goods (aerated drinks, luxury cars, motorcycles above 350cc, tobacco). The 0% nil band expanded to cover items like individual health and life insurance premiums, many lifesaving medicines, UHT milk and Indian breads. So today most essentials and FMCG sit at 5%, most goods and services (electronics, appliances, small cars, telecom, banking) at 18%, and only luxury/demerit goods at 40%.
Shopkeepers pricing MRP-inclusive goods, freelancers whose clients pay a fixed gross amount, accountants reconciling invoices, and anyone claiming input tax credit from a total bill. As with all our tools, calculations run entirely in your browser — no figures are uploaded or stored.