GST Calculator - Calculate GST Online Instantly
Calculate exclusive and inclusive GST with CGST, SGST, and IGST split for Indian invoices.
GST Rate
GST Result
- Base Amount
- ₹10,000
- CGST
- ₹900
- SGST
- ₹900
- Total
- ₹11,800
Free GST calculator for Indian businesses
This GST calculator helps Indian businesses quickly estimate tax on invoices, quotations, and purchase values. It supports both GST exclusive pricing, where GST is added on top of the base amount, and GST inclusive pricing, where the entered amount already contains tax.
For intra-state transactions, GST is split equally into CGST and SGST. For inter-state transactions, the same tax amount is shown as IGST. The calculator uses Indian currency formatting so values are easier to read in lakhs and crores.
How to Use
- 1
Enter the taxable amount or GST-inclusive amount.
- 2
Choose the GST slab rate such as 5%, 12%, 18%, or 28%.
- 3
Select intra-state for CGST plus SGST or inter-state for IGST.
- 4
Copy the result for your invoice, estimate, or rough accounting note.
Frequently Asked Questions
What is GST and how is it calculated?+
GST is calculated as taxable value multiplied by the GST rate. For inclusive prices, the tax portion is separated using amount x rate / (100 + rate).
What is the difference between CGST, SGST, and IGST?+
CGST and SGST apply to intra-state sales and split the GST equally. IGST applies to inter-state sales.
What are the current GST slab rates in India?+
Common GST slabs are 5%, 12%, 18%, and 28%, although some goods or services may have special rates.
How do I calculate GST inclusive price?+
For inclusive GST, base amount equals total amount x 100 / (100 + GST rate).
Is this calculator accurate for filing GST returns?+
It is accurate for basic arithmetic, but verify classification, exemptions, and filing treatment with your accountant.
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