GST Calculator
Quickly calculate GST amount and the final price — either add GST to a base price or remove GST from a GST-inclusive price.
Results
| Original Amount | |
|---|---|
| GST Amount | |
| Final Amount |
What is GST?
Goods and Services Tax (GST) is an indirect tax applied to the supply of goods and services in India, levied at standard slab rates of 5%, 12%, 18%, and 28% depending on the category.
How to use the GST calculator
- Enter the base or final amount.
- Select the applicable GST rate for your product or service.
- Choose "Add GST" to calculate the inclusive price from an exclusive amount, or "Remove GST" to extract the base price from a GST-inclusive amount.
GST formula used
To add GST: Final Amount = Original Amount × (1 + GST Rate/100). To remove GST: Original Amount = Final Amount ÷ (1 + GST Rate/100).
Frequently Asked Questions
What are the standard GST slab rates in India?
The common GST slabs in India are 5%, 12%, 18%, and 28%, with the applicable rate depending on the specific goods or services category as per government notification.
What is the difference between CGST and SGST?
For intra-state transactions, GST is split equally into CGST (Central GST) and SGST (State GST). This calculator shows the combined GST amount; you can simply divide the GST amount by two to get each component.
Can I use this for inter-state IGST calculations?
Yes, the total GST amount calculation works the same way for IGST since the overall rate is identical — only the classification (CGST+SGST vs IGST) differs based on transaction type.
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