Calculate GST (Goods and Services Tax) amounts instantly with our free GST calculator for India. Whether you need to add GST to a price (exclusive) or extract GST from a price (inclusive), our calculator handles both scenarios. Select from standard GST rates of 5%, 12%, 18%, and 28%, or enter a custom rate. Perfect for business owners, accountants, shopkeepers, and anyone needing quick GST calculations for invoicing, billing, or tax planning. Get accurate breakdowns of base amount, GST amount, and total amount. Essential tool for GST compliance and pricing decisions. The calculator also helps you understand CGST, SGST, and IGST components for complete tax clarity.
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GST Amount = Base Amount × (GST% / 100)
Total Amount = Base Amount + GST Amount
Example: Product price ₹5,000.00 with 18% GST
GST = 5,000 × 18/100 = ₹900.00
Total = 5,000 + 900 = ₹5,900.00
Base Amount = Total Amount / (1 + GST%/100)
GST Amount = Total Amount - Base Amount
Example: Invoice total ₹5,900.00 (GST inclusive at 18%)
Base = 5,900 / 1.18 = ₹5,000.00
GST = 5,900 - 5,000 = ₹900.00
| Type | Applicability | Split (for 18% GST) |
|---|---|---|
| CGST + SGST | Intra-state transactions (within same state) | 9% CGST + 9% SGST |
| IGST | Inter-state transactions (between different states) | 18% IGST |
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