GST Calculator
Add or remove GST at any slab rate — inclusive and exclusive, instantly.
On a ₹10,000 bill at 18% GST, the tax is ₹1,800 and the total ₹11,800. If a price already includes GST, the tax hidden inside isn’t simply 18% of the total — it’s total × 18/118, or ₹1,525 on ₹10,000. This calculator handles both directions.
How to use the gst calculator
- Enter the amount.
- Pick the GST slab and mode.
- See the GST amount and total.
GST Calculator — FAQs
What are the GST slabs in India?
0%, 5%, 12%, 18% and 28%. Most goods and services fall under 5–18%; luxury and sin goods attract 28% plus cess.
What is the difference between inclusive and exclusive GST?
Exclusive adds GST on top of the base price. Inclusive extracts the tax already hidden inside a quoted price — the extracted tax is always less than rate × total.
What is CGST vs SGST vs IGST?
Intra-state sales split GST equally into CGST + SGST; inter-state sales charge IGST instead. The total rate is the same.
Can I claim input tax credit?
Registered businesses can offset GST paid on purchases against GST collected on sales — that’s the core design of GST. Keep proper invoices.
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