GST Calculator

Add GST to an amount or remove it from a GST inclusive amount, and see the split into CGST and SGST or IGST. Free, instant, and no signup.

How GST is calculated

To add GST, the GST amount is the base amount multiplied by the rate. For example, 18 percent GST on 10,000 rupees is 1,800 rupees, so the total is 11,800 rupees. To remove GST from an inclusive amount, the base is the amount divided by one plus the rate, and the GST is the difference.

For supply within the same state, GST splits equally into CGST and SGST. For supply across states, the whole amount is IGST. The total is the same either way. The standard GST rates in India are 5, 12, 18, and 28 percent.

This tool is for quick estimation. For filing, always confirm the correct rate for your goods or services.