Finance Calculator
GST Calculator India
Add or remove GST from any amount instantly. Supports all GST slabs - 5%, 12%, 18%, 28%. Get CGST, SGST and IGST breakdown.
GST Slabs in India 2026
Goods and Services Tax replaced VAT, service tax, and excise duty in India from July 2017. India has 4 main GST slabs.
- 0% GST: Fresh vegetables, milk, eggs, education, healthcare
- 5% GST: Packaged foods, small restaurants, domestic LPG, medicines
- 12% GST: Computers, processed foods, mobile phones, business travel
- 18% GST: Most services, AC restaurants, electronics, software
- 28% GST: Luxury cars, tobacco, aerated drinks, casinos
CGST vs SGST vs IGST Explained
For intra-state (within same state) transactions, GST splits equally as CGST and SGST. For inter-state transactions, full IGST applies.
GST Calculation Formula
Adding GST: Total = Original Price x (1 + GST% / 100)
Removing GST: Base Price = Total Price / (1 + GST% / 100)
Frequently Asked Questions
How to calculate 18% GST on Rs. 1000?
GST Amount = 1000 x 18/100 = Rs. 180. Total with GST = Rs. 1180. CGST = Rs. 90, SGST = Rs. 90.
How to remove GST from a price?
If a product costs Rs. 1180 inclusive of 18% GST, base price = 1180 / 1.18 = Rs. 1000. GST amount = Rs. 180.
Is GST charged on GST?
No, GST is calculated only on the base price (ex-GST price). You cannot charge GST on top of GST.