Quickly calculate Goods and Services Tax (GST). Add GST to a base amount or remove GST from a tax-inclusive total.
Use this free IGST calculator to find the tax on any inter-state business transaction in India.
IGST stands for Integrated Goods and Services Tax. It is the tax applied to the sale of goods or services between two different states in India. Unlike intra-state sales which split GST into CGST and SGST, inter-state sales attract a single IGST charge at the full GST rate.
For example, a product with an 18% GST rate sold from a business in Delhi to a customer in Mumbai attracts 18% IGST, not 9% CGST plus 9% SGST.
IGST applies when the buyer and seller are located in different states. It also applies to imports, exports (as zero-rated supply), and certain other cross-border transactions.
On your GST invoice for inter-state sales, you must show the IGST amount separately. Do not split it into CGST and SGST for inter-state transactions.
Multiply the base price by the applicable IGST rate (which equals the full GST rate). For example, for a base price of 10,000 rupees at 18%, the IGST is 1,800 rupees and the total invoice amount is 11,800 rupees.
This calculator handles the math instantly. Enter the base price and select the GST rate to get the IGST amount.
CGST and SGST are used for intra-state sales. IGST is used for inter-state sales. The total tax burden on the buyer is the same in both cases. The difference is in how the tax revenue is distributed between central and state governments.
Always use the correct tax type on your invoice. Using CGST and SGST on an inter-state invoice, or IGST on an intra-state invoice, is a compliance error.
E-commerce sellers shipping goods across state lines must charge IGST on those sales. Imports into India also attract IGST at the applicable rate in addition to customs duty.
The Tez Invoice free invoice generator lets you choose between CGST and SGST or IGST for any invoice, ensuring compliance.
Tez Invoice is our free online invoice generator. No sign up. No watermark. Download clean PDF or JPEG invoices in seconds, right from your browser.
Common questions about IGST Calculator: Compute Integrated GST for Inter-State Sales on Tez Invoice.
Integrated GST (IGST) is the tax applied to inter-state sales of goods and services in India. It is a component of the Goods and Services Tax (GST) system in India.
Multiply the base price by the full GST rate. The entire amount goes as IGST. For example, 10,000 at 18% GST means 1,800 rupees IGST.
Yes. The Tez Invoice IGST calculator is 100 percent free with no sign up needed.
Check the specific conditions for IGST in the description above or consult the GST guidelines for your transaction type.
Yes. The tool is fully responsive and works on smartphones, tablets, and computers.
Yes. You can select 5%, 12%, 18%, or 28% GST rates in the calculator.
Use the free Invoice Generator on Tez Invoice to create a professional invoice with correct GST breakdowns.
No. All calculations happen in your browser. Nothing is sent to any server.
Intra-state sales attract CGST and SGST. Inter-state sales attract only IGST at the same combined rate.
You can create a complete GST invoice on Tez Invoice and download it as a PDF or JPEG with all GST amounts shown.