GST Calculator
Calculate GST amounts with the current GST 2.0 slabs and a full CGST, SGST, IGST breakdown.
GST (Goods and Services Tax) is India's unified indirect tax. Since the GST 2.0 reform effective 22 September 2025, the main slabs are 0%, 5%, 18%, and 40% — the old 12% and 28% slabs were abolished. Intra-state sales split the tax into CGST and SGST; inter-state sales use IGST instead.
Enter the price before GST — the tool will calculate the GST amount and total.
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About GST Calculator
India's Goods and Services Tax (GST) system was restructured under GST 2.0, effective 22 September 2025: the 12% and 28% slabs were abolished, most goods shifted to 5% or 18%, and a new 40% slab was introduced for luxury and sin goods. This calculator uses the current slabs — 0%, 5%, 18%, and 40%, plus the special 0.25% and 3% rates that still apply to rough diamonds and gold/silver/precious stones. You can calculate GST both ways — adding GST to a base price (exclusive) or extracting GST from a price that already includes it (inclusive). The tool shows complete breakdowns including CGST and SGST for intra-state transactions and IGST for inter-state transactions. This is essential for business invoicing, filing returns, and financial planning. The math: GST amount = Price × (Rate ÷ 100) — so a ₹1,000 item at 18% adds ₹180 GST (₹90 CGST + ₹90 SGST for an intra-state sale, or ₹180 IGST for inter-state), for a total of ₹1,180. Every calculation runs entirely in your browser — nothing you enter is uploaded or stored anywhere.
Frequently Asked Questions
CGST (Central GST) and SGST (State GST) are charged on intra-state transactions, each at half the GST rate. IGST (Integrated GST) is charged on inter-state transactions at the full GST rate.
GST exclusive means the price you enter does not include GST. The tool adds the applicable GST to calculate the final price.
GST inclusive means the price you enter already includes GST. The tool extracts the GST component to show the original price.
Effective 22 September 2025, the GST Council abolished the 12% and 28% slabs. Most items previously at 12% moved to 5% or 18%, most items previously at 28% moved to 18%, and a new 40% slab was introduced specifically for luxury and sin goods (like high-end vehicles and aerated beverages).
The main GST rates are now 0%, 5%, 18%, and 40%. Special rates of 0.25% and 3% still apply to specific goods like rough diamonds and gold/silver/precious stones.
Yes, the breakdown this calculator provides matches the standard format required for GST invoicing in India.