How to Calculate GST?
Enter your amount, select the applicable GST rate and choose whether the amount includes GST. The calculator displays the taxable value, tax amount and invoice total.
GST Calculation Formula
Amount Before GST
GST = Taxable Value × GST Rate ÷ 100.
Total Amount = Taxable Value + GST.
GST Inclusive Amount
Taxable Value = Inclusive Amount ÷ (1 + GST Rate ÷ 100).
GST = Inclusive Amount − Taxable Value.
Difference Between CGST, SGST and IGST
CGST and SGST generally apply together to intra-state supplies. IGST generally applies to inter-state supplies. The correct tax treatment depends on the transaction and applicable place-of-supply rules.
Frequently Asked Questions
Is this GST calculator free?
Yes. You can use this calculator free of charge without signing in.
Can I calculate GST inclusive amounts?
Yes. Select Amount Including GST to calculate the taxable value and GST component.
Does this calculator file GST returns?
No. It only calculates an indicative GST breakdown. It does not file returns or make tax payments.
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