GST Calculator CGST / SGST / IGST

GST rates depend on the classification and applicable rate notifications. The calculator includes configured slabs from 0% through 28%; verify the rate for the specific supply in the Central Goods and Services Tax (Rate) Notification, 2017 and Integrated Goods and Services Tax (Rate) Notification, 2017 before invoicing.

For a GST-inclusive price, GST equals price × rate ÷ (100 + rate). For example, ₹1,180 inclusive of 18% GST contains ₹180 GST and a ₹1,000 taxable base. This is a calculation aid; the taxable value rules are in Section 15, Central Goods and Services Tax Act, 2017.

Select Remove GST, enter the total bill, and choose the applicable rate. The tool extracts the GST component using total × rate ÷ (100 + rate), then displays the base and tax. Check the rate and taxable-value treatment under Section 15, Central Goods and Services Tax Act, 2017.

For a pre-tax amount, multiply the base by the rate and divide by 100. For a tax-inclusive amount, multiply the total by rate and divide by 100 plus the rate. The tool applies both formulas and rounds the displayed result to two decimal places; confirm the applicable rate under the Central Goods and Services Tax (Rate) Notification, 2017.

Enter the taxable value and select the rate applicable to that specific supply. The calculator does not classify goods or decide the legal rate. For intra-State transactions it splits the result into CGST and SGST; for inter-State transactions it shows IGST, under Section 9, Central Goods and Services Tax Act, 2017 and Section 5, Integrated Goods and Services Tax Act, 2017.

This tool calculates tax charged on one transaction, not your final return liability after input-tax credit, reverse charge or other adjustments. Use the output-tax result with your records and apply the credit conditions in Section 16, Central Goods and Services Tax Act, 2017 before determining net GST payable.

Choose Add GST when your entered amount is before tax and you want the invoice total. Choose Remove GST when the entered amount already includes tax and you want the base and GST components. The tool presents the calculation; taxable value is governed by Section 15, Central Goods and Services Tax Act, 2017.

For an intra-State supply, the calculator splits the selected GST amount into CGST and SGST or UTGST. For an inter-State supply, it shows the full amount as IGST. The place-of-supply determination is separate from this calculation and follows the Central Goods and Services Tax Act, 2017 and Integrated Goods and Services Tax Act, 2017.

The registration threshold depends on the nature of supplies, the State or Union Territory and statutory exceptions; it is not a universal calculator output. Check aggregate turnover and compulsory-registration triggers under Section 22, Central Goods and Services Tax Act, 2017 before deciding whether registration is required.

The tool can calculate a selected rate but cannot decide whether a transaction qualifies as an export or zero-rated supply. Confirm the conditions, LUT or bond route and refund process under Section 16, Integrated Goods and Services Tax Act, 2017 rather than treating a 0% selection as a legal conclusion.