India · GST Calculator

Free GST Calculator

Free GST calculator works out CGST, SGST and the total in seconds.

3%
5%
12%
18%
28%

Taxable value ₹1,000.00
CGST ₹90.00
SGST ₹90.00
Total GST ₹180.00
Total amount ₹1,180.00

CGST and SGST are shown split evenly for intra-state supply.

Why use this calculator

Built for shopkeepers, freelancers and accountants who need a quick, accurate number without opening a spreadsheet.

Add or remove GST

Switch direction with one tap — work forward from a base price or back out the tax from a final price.

All GST slabs

Covers the five standard Indian GST rates — 3%, 5%, 12%, 18% and 28% — as tappable chips.

CGST and SGST split

See the tax broken into its two intra-state components, not just a single lump total.

Instant results

Every figure updates live as you type or change the rate — no calculate button to press.

About GST

Goods and Services Tax (GST) is India's unified indirect tax, charged on the supply of most goods and services. It replaced a patchwork of state and central taxes with a single rate structure, currently set at 3%, 5%, 12%, 18% or 28% depending on the item.

For sales within the same state, GST is split evenly into CGST (collected by the central government) and SGST (collected by the state government). For sales across state lines, the same total is instead charged as IGST. This tool assumes an intra-state sale and shows the CGST/SGST split accordingly.

Figures from this calculator are for quick reference only and don't constitute tax advice — confirm exact liabilities with a tax professional or the official GST portal before filing.

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