Goods and Services Tax — indirect tax with CGST/SGST for intra-state and IGST for inter-state supplies.

🧮 Free Calculator

GST Calculator

Add GST to a base price or back out tax from a GST-inclusive total. View CGST/SGST (half each) or full IGST for inter-state.

✓ No signup✓ Instant results✓ Works offline

Inputs

Mode

Add GST to amount Remove GST from amount

Amount (₹)

GST rate

Tax type

Intra-state (CGST + SGST) Inter-state (IGST)

Results

₹0

GST amount

₹0

Taxable value

₹0

Total with GST

How GST math works

Add GST: GST = Amount × (rate/100), Total = Amount + GST. Remove GST: If amount includes GST, Taxable = Amount ÷ (1 + rate/100), GST = Amount − Taxable.

For intra-state supplies, CGST and SGST are typically half of the total GST each. For inter-state, IGST equals the full GST rate amount in one component. Actual invoicing must follow your GST registration and HSN/SAC rules — this page is a quick arithmetic aid only.

FAQ

Is this official GST filing?

No — it is a calculator only, not connected to the GST portal.