GST Calculator

A GST calculator adds Goods and Services Tax to a price or extracts it from a price that already includes it. Shopkeepers, freelancers and small businesses use it to quote prices, check invoices and fill in returns, and buyers use it to see how much of a bill is tax.

Choose whether to add or remove GST, enter the amount and the rate, and say whether the sale is within the state or to another state. The calculator shows the price before tax, the GST, the CGST and SGST halves or the IGST, and the total, to the paisa. Quick buttons cover the current slabs.

Adding GST: GST = price × rate ÷ 100, and the total is the price plus GST. Removing GST from an inclusive price: price before tax = total × 100 ÷ (100 + rate). Within a state the GST is split equally between CGST and SGST; on a sale to another state the whole amount is IGST.

Since GST 2.0 took effect on 22 September 2025, most goods and services fall in the 5% or 18% slabs, with 40% for luxury and sin goods and nil for essentials. The old 12% and 28% slabs were folded into these. Gold and silver carry 3% and rough diamonds 0.25%.