GST Calculator India
Instantly add, remove, or split GST. Use our advanced tools to calculate multi-item invoices or determine exact profit margins after taxes.
Standard GST Calculator
Calculation Result
₹0.00
Base Amount ₹0.00
GST Amount ₹0.00
Profit Margin Calculator
Net Profit Margin
0.00%
Net Profit (₹) ₹0.00
GST Paid (₹) ₹0.00
Multi‑Item Invoice Calculator
| Unit Price (₹) | Quantity | GST Rate (%) |
|---|---|---|
Grand Total (Incl. Taxes)
₹0.00
Professional Retail & Commercial Scales
Perfect for businesses generating GST invoices. Discover our highly accurate, W&M Department Approved retail scales.
Indian GST Calculation Guide
Whether you are a retailer, wholesaler, or service provider, calculating exact Goods and Services Tax (GST) is essential for accurate invoicing and profit tracking. This tool follows standard Indian taxation mathematics to help you seamlessly extract base prices, split state and central taxes, and forecast your margins.
Frequently Asked Questions
How do I calculate 18% GST on an amount?
To add 18% GST to a base amount, multiply the amount by 0.18 to find the total tax, and then add it to your original price. Alternatively, just multiply the base price by 1.18 to get the final GST-inclusive total instantly.
How do I reverse or remove GST from a total price?
To extract the base price from a GST-inclusive amount, divide the total price by (1 + (GST Rate / 100)). For example, to remove 18% GST from a total, divide the amount by 1.18. Our tool handles this automatically using the "Remove GST" feature.
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are split equally and applied on intra-state sales (transactions conducted within the same state). IGST (Integrated GST) is applied in full on inter-state sales (billing a client in a different state).
What are the standard GST slabs in India?
The primary GST tax slabs in India are currently 5%, 12%, 18%, and 28%. There are also special rates, such as 3% on gold and 0.25% on rough precious and semi-precious stones.