Add or remove GST at any rate in seconds. See the base amount, GST, CGST, SGST, and the final total instantly.
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GST (Goods and Services Tax) is India's unified indirect tax on the supply of goods and services. Use this calculator to add GST to a base price (exclusive) or extract GST already included in a price (inclusive), with an automatic CGST and SGST split.
Exclusive: GST is added on top of the base amount — GST = amount × rate / 100, total = amount + GST. Inclusive: the price already contains GST — base = amount ÷ (1 + rate/100), and GST is the difference.
For supplies within a state, GST is split equally into CGST (Central) and SGST (State) — each is half the total GST. For inter-state supplies, the full amount is charged as IGST instead.
India uses five main slabs: 0%, 5%, 12%, 18%, and 28%. Most services fall under 18%; essentials are at 0–5%, while luxury and sin goods are taxed at 28% plus cess.
Exclusive means the listed price is before tax, so GST is added on top. Inclusive means the price already includes GST, so you work backwards to find the base and tax components.
For intra-state transactions, the total GST is divided equally — CGST is half and SGST is half. For example, on 18% GST, CGST is 9% and SGST is 9% of the base amount.
IGST applies to inter-state supplies and imports. It equals the full GST rate and is collected by the Centre, which later shares the state's portion with the destination state.
It depends on the product or service category. Verify the correct HSN/SAC code and its applicable slab. This calculator works with any rate you enter.