How GST Is Computed

This GST calculator supports both modes: exclusive adds the tax to the base price (amount × rate ÷ 100), while inclusive extracts it from the quoted total (amount − amount ÷ (1 + rate ÷ 100)). Intra-state sales split the tax equally into CGST and SGST; inter-state sales charge a single IGST.

Why the Split Matters

CGST funds the central government and SGST the state, so every intra-state invoice must show both components. For inter-state supplies, IGST replaces the pair and is later apportioned to the destination state under the GST compensation mechanism.

Filing and Input Credit

Businesses claim input tax credit for GST paid on purchases, offsetting it against GST collected on sales. Keeping the taxable value and tax split accurate on every invoice is what makes the credit chain work end to end.