GST Calculator
Two GST questions cover almost every real situation: "what will this cost with GST added?" and "how much of this GST-inclusive price was tax?" This calculator handles both — add mode applies the slab to a net price, extract mode backs the tax out of a MRP-style inclusive price — using India's four standard slabs (5, 12, 18, 28%) with one tap each.
The CGST/SGST line is the invoice detail most calculators skip: intra-state sales split the tax equally between Central and State GST, while inter-state bills carry the full amount as IGST. Whether you are checking a restaurant bill, pricing a product or filing a reimbursement, the split is shown in rupees, and the share button packages the whole breakdown for the accounts chat.
How to use
- Enter the price and tap the slab — 5, 12, 18 or 28%.
- Choose "add GST" for net prices or "extract GST" when the price already includes tax.
- Read the GST amount, net/gross figures and the CGST/SGST split, then share the breakdown in one tap.
Frequently asked questions
How do I calculate GST on a price?
GST = net price × rate ÷ 100 — a ₹2,499 item at 18% carries ₹449.82 GST for a gross of ₹2,948.82. For GST-inclusive prices, reverse it: tax = price × rate ÷ (100 + rate), because the sticker price already contains the tax.
How do I remove GST from a total price?
Divide by (1 + rate/100): a ₹1,180 bill at 18% inclusive has a net of 1,180 ÷ 1.18 = ₹1,000 and ₹180 GST. The extract mode applies exactly this, which is the calculation most people get wrong by simply subtracting 18% of the total.
What is the difference between CGST, SGST and IGST?
Intra-state sales split the GST equally between Central and State GST (CGST + SGST); inter-state sales levy it once as IGST. The amounts are identical — only the split changes, and the calculator shows both views.
Which GST slab applies to my item?
India's main slabs are 5% (essentials), 12% and 18% (most goods and services), and 28% (luxury and sin goods). The rate is set per HSN/SAC code rather than by product type alone — when in doubt, the invoice of a comparable product is the fastest reference.