Independent GST information guide
GST Calculator: Add or Remove GST
Calculate GST locally in your browser. No amount is submitted or stored.
Base amount₹0
GST amount₹0
Total amount₹0
GST calculator formulas
Add GST: GST amount = base amount × rate ÷ 100. Total = base amount + GST amount.
Remove GST: Base amount = tax-inclusive total ÷ (1 + rate ÷ 100). GST amount = total − base amount.
This is a convenience calculator, not tax advice. Verify the applicable GST rate using official sources.
Frequently asked questions
Does this calculator send my amount anywhere?
No. The calculation runs locally in your browser and does not submit your amount.
How do I remove GST from a tax-inclusive total?
Choose Remove GST. The calculator divides the total by one plus the GST rate to estimate the base amount.