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Add or remove GST from any amount instantly.
Enter an amount and GST rate to see the tax breakdown — works both ways, whether your price already includes GST or not.
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Calculate GST
Choose whether to add GST to a price or extract it from a GST-inclusive price.
GST Calculator
Calculation type
Amount
GST rate
Tax type
How it works
1
Enter your amount
Type the base price, or the GST-inclusive price if removing GST.
2
Pick a GST rate
Choose a standard slab or enter a custom rate.
3
Read the breakdown
See CGST/SGST or IGST split out instantly, with the final total.
Frequently asked questions
Yes — toggle between 'Add GST' to a base price or 'Remove GST' from a price that already includes tax.
Yes, choose intra-state to see the CGST+SGST split, or inter-state for IGST.
Yes — select 'Custom' from the rate dropdown and enter any percentage.
No — this is a quick calculator for pricing and invoicing, not a filing tool.