GST Calculator
Free GST calculator for India: add GST to a price or remove it from a GST-inclusive amount, with CGST and SGST within a state or IGST across states.
Also: VAT Calculator Β· India In-Hand Salary Calculator Β· SIP Calculator
What it does
GST (Goods and Services Tax) is India’s tax on the supply of goods and services. Within a state it is split in two equal halves, CGST for the centre and SGST for the state; between states the whole amount is IGST. To add GST, multiply the price by the rate; to remove it from a price that already includes it, divide by one plus the rate.
How to use it
- Enter the amount and choose the GST rate.
- Choose whether the amount is before tax (add GST) or already includes it (remove GST).
- Choose a sale within the state or between states to see CGST and SGST or IGST.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
What are the GST rates?
Since 22 September 2025 most goods and services are taxed at 5% or 18%, with 40% for a short list of luxury and sin goods; some items are exempt, gold is taxed at 3% and rough diamonds at 0.25%. Check the rate for your product or service.
How do I remove GST from a price?
Divide the price by one plus the rate. For 18%, ₹1,180 ÷ 1.18 = ₹1,000 before tax, so the GST is ₹180. Subtracting 18% of ₹1,180 would give the wrong answer.
Wikipedia — Goods and Services Tax (India)
GST Portal — Government of India