GST Calculator
About the GST Calculator
Our GST calculator is a fast, accurate tool designed to help businesses, freelancers, sellers, and shoppers calculate Goods and Services Tax (GST) instantly. Whether you need to add GST to a product price, find the tax amount included in a total, or compare different GST rates, this GST Calculator gives clear results so you can price items, create invoices, and file taxes correctly.
Key features of the GST Calculator
Calculate GST amount for any price using selectable GST rates (e.g., 0%, 5%, 12%, 18%, 28%) or a custom rate.
Compute price inclusive of GST (gross price) or price exclusive of GST (net price).
Reverse-calculate to find the base price when you have a GST-inclusive total.
Show total payable (base + GST) and split tax into CGST/SGST or IGST where applicable.
Support for multiple-line items (sum multiple products/services to get invoice totals).
Option to include discounts before or after tax to reflect real-world pricing.
How to use the GST Calculator
Enter the base price (or the tax-inclusive price if reversing).
Select the applicable GST rate or enter a custom percentage.
Choose whether you want the result inclusive or exclusive of GST.
(Optional) Add discount percentage or flat discount amount.
Click Calculate to view the GST amount, net price, tax breakdown (CGST/SGST or IGST), and total payable.
Practical examples
Add 18% GST to a product priced at ₹1,000 → GST = ₹180; Total = ₹1,180.
Find base price when total is ₹1,180 and GST is 18% → Base = ₹1,000; GST = ₹180.
For intra-state sale at 18%: CGST = 9% (₹90), SGST = 9% (₹90).
GST Calculator - India
Calculate GST and generate invoices
Why use a GST Calculator?
Avoid manual calculation errors when pricing or invoicing.
Quickly determine tax liabilities and invoice totals for customers.
Helpful for small businesses, e-commerce sellers, accountants, and freelancers.
Useful when preparing tax filings or reconciling receipts and invoices.
Tips for accurate results
Confirm whether the transaction is intra-state (CGST + SGST) or inter-state (IGST) to split taxes correctly.
Apply discounts in the correct order: some businesses apply discounts before tax, others after; this affects the final GST.
If you’re unsure about taxability (exempt, zero-rated, or non-GST), consult your tax advisor or the official GST rules.
Keep invoice-level detail (taxable value, GST rate, tax amount) for proper bookkeeping and compliance.
Start using our GST Calculator to make invoicing and pricing effortless — accurate GST calculations in seconds so you can focus on running your business.
| Base Price | GST Rate | CGST | SGST | IGST | Total Price |
|---|---|---|---|---|---|
| ₹1,000 | 18% | ₹90 (9%) | ₹90 (9%) | — | ₹1,180 |
| ₹2,000 | 12% | ₹120 (6%) | ₹120 (6%) | — | ₹2,240 |
| ₹5,000 | 18% (IGST) | — | — | ₹900 | ₹5,900 |
Note: For intra-state sales, GST splits into CGST + SGST. For inter-state sales, IGST applies.